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Journal articles on the topic 'Liquid paraffin'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Gurbanov, А. Q., and L. Q. Hajikerimova. "New inhibitor against asphaltene-resin-paraffin deposits and salts." Scientific Petroleum, no. 2 (December 30, 2023): 41–47. http://dx.doi.org/10.53404/sci.petro.20230200047.

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The deposition of asphaltenes, resins, paraffins (ARP) and salts in tubing, surface equipment and transport lines is one of the important problems in the production and transportation of well products. At high temperatures at the bottom of the well, the components of crude oil are in a liquid state; when the temperature decreases, as they rise to the surface and exit the well, asphaltene, resinous, and paraffin compounds begin to separate from the oil and settle in production pipes and equipment. Laboratory studies were carried out using highly paraffinic oil from the Sangachal-Duvanni-Khara-Z

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2

Simal-Gándara, Jesús, Miguel Sarria-Vidal, and Rinus Rijk. "Determination of Paraffins in Food Simulants and Packaging Materials by Liquid Chromatography with Evaporative Mass Detection and Identification of Paraffin Type by Liquid Chromatography/Gas Chromatography and Fourier Transform Infrared Spectroscopy." Journal of AOAC INTERNATIONAL 83, no. 2 (2000): 311–19. http://dx.doi.org/10.1093/jaoac/83.2.311.

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Abstract A liquid chromatographic method with evaporative mass detection (EMD) is described for the determination of paraffins in food contact materials that do not contain polyolefin oligomers, or paraffins migrating from these materials into fatty food simulants or certain simple foods. A normal-phase column operating at maximum column efficiency separates nonparaffinic and paraffinic materials without resolving the latter into individual components, and EMD is used to quantitate the paraffins. An on-line qualitative method that uses liquid chromatography/gas chromatography with flame ioniza

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3

Dreyer, J., and C. Hecht. "Ermittlung eines optimierten Paraffins zur Sanierung feuchtegeschädigter Bausubstanz / Identification of an Appropriate Paraffin for the Retrofitting of Moisture Damaged Buildings." Restoration of Buildings and Monuments 4, no. 5 (1998): 451–66. http://dx.doi.org/10.1515/rbm-1998-5306.

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Abstract The filling of the pores with paraffin is a known and effective method to establish a subsequent moisture barrier in walls. Paraffin is compatible with the building material and the environment. Is the material warm enough before, or while, the treatment takes place, the liquid paraffin fills the pores completely. The distribution of the paraffin in the building material will be controlled with the temperature around the penetration area. Experiments with different building materials take place in order to find the connection between the receptivity of different paraffins at different

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4

T., S. S. Rao, Dhurve Susheela, and Awasthi Shubhra. "Oxidation of liquid paraffins." Journal of Indian Chemical Society Vol. 90, Apr 2013 (2013): 409–22. https://doi.org/10.5281/zenodo.5769832.

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Department of Chemistry, Dr. Hari Singh Gour University, Sagar-470 003, Madhya Pradesh, India <em>E-mail</em> : drtssrao@yahoo.co. in <em>Manuscript received 28 December 2011, revised 02 May 2012, accepted 07 June 2012</em> Alkylhydroperoxides formed initially as the products of paraffin oxidation undergo decomposition to give alcohols, ketones etc. The further oxidation of these products yields carboxylic acids. The transition metal salts like stearates of Mn, Co and Cr and acetylacetonates of Mn, Co, Cr, Mo and complexes of metals like Ru, Pd, Ni etc. can accelerate the decomposition. Temper

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5

Sen, Subhash C., Soumen Maity, Kausik Ganguli, Kausik Goswami, and P. Ray. "Binary liquid-liquid equilibria of aniline-paraffin and furfural-paraffin systems." Canadian Journal of Chemical Engineering 69, no. 6 (1991): 1367–73. http://dx.doi.org/10.1002/cjce.5450690619.

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6

Syahidah and Tekat Dwi Cahyono. "STABILISASI DIMENSI KAYU DENGAN APLIKASI PARAFIN CAIR." PERENNIAL 4, no. 1 (2008): 18. http://dx.doi.org/10.24259/perennial.v4i1.178.

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Wood is a special material which can swell and shrink with the change of environmental humidity. The aim of this research was to enhance the dimensional stability of wood. Clear specimens of jackfruit wood (Artocarpus heterophyllus) ) measuring 15 cm (L) x 2 cm (R) x 2 cm (T) and mangium wood (Acacia mangium Wild.) measuring 5 cm (L) x 5 cm (R) x 5 cm (T) were prepared for treatment. The samples were firstly soaked in a liquid paraffin with 0% concentration (100% kerosene soluble), 33.3 %, 66,6% and 100%. All samples were then vacuumed for 1 hour and soaked in water for 24 hours. Results indic

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7

Wang, Qing, Cun Bao Zhang, Zhao Yang Ding, and Jun Liu. "Study on the Thermal Properties of Paraffin/Ceramsite Phase Change Concrete." Advanced Materials Research 838-841 (November 2013): 91–95. http://dx.doi.org/10.4028/www.scientific.net/amr.838-841.91.

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Mixed paraffins, which had low phase transition temperature and high enthalpy,were used as phase change material (PCM),light-weight clay ceramsite was used as carrier, paraffin/ceramsite PCM was prepared and which was encapsulated by epoxy resin and triethylenetetramine.The results show that the proportion of liquid paraffin to solid paraffin is 4:6 through both temperature-time curve test and DSC analysis.The quality of paraffin which is absorbed in vacuum condition for 2 hours is 95.5% and the minimum leakage quality of paraffin in the process of thermal cycling is 3.3% which is half of the

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8

Li, Yan, Guo You You, and Zhu Qunzhi. "Numerical Simulation of Paraffin Melting Process in an Inclined Channel." Key Engineering Materials 896 (August 10, 2021): 111–16. http://dx.doi.org/10.4028/www.scientific.net/kem.896.111.

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Numerical simulation of the melting of paraffin in the inclined straight channel shows that the melting speed of paraffin is faster in the early stage and gradually slows down in the later stage. It is found that heat conduction is the main heat transfer mode in the early stage of paraffin melting. With the increasing number of liquid paraffin, natural convection occurs in the liquid paraffin. The liquid paraffin with higher temperature flows upward due to the effect of buoyance and lift, and convection heat transfer gradually increases and takes the dominant position in the melting process.

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9

Xu, Shu Hui, and Guo Qiang Yang. "Numerical Simulation of Heat Transfer Characteristics of Melting Process of Paraffin Heat Storage Ball." Applied Mechanics and Materials 291-294 (February 2013): 1690–95. http://dx.doi.org/10.4028/www.scientific.net/amm.291-294.1690.

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In this paper, a paraffin heat storage ball whose diameter is 100mm is the research object. Two mathematical models of paraffin melting process are established respectively when the natural convection of liquid phase of paraffin is considered and ignored. The melting process of paraffin heat storage ball which initial temperature is 290K is simulated by using the solidification/melting model of FLUENT. Through analyzing the temperature distribution of the ball and proportion of solid-liquid phase in the ball in the melting process at a certain time, studying the time history of the proportion

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10

Borisova, Nikol, Plamen Petkov, and Hristo Iliev. "Study of binary liquid capillary bridges stretched between two solid flat surfaces." Mathematical Modeling 6 (October 9, 2022): 13–16. https://doi.org/10.5281/zenodo.7172634.

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Liquid capillary bridges (CBs), created between two flat solid surfaces, parallel to each other, are of significant importance for number of scientific and industrial applications. In this paper, we present our experimental investigation of the liquid CBs at stretching, created by two immiscible liquids: cedar oil–water and paraffin-water with common interface. The behaviour of these binary structures was studied and compared with that of the single liquid CBs. It was found that the binary liquid CBs exist in the same definition domain as the single liquid CBs. Moreover, the current pape

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11

Shafikova, E. A., N. G. Belenkova, and L. I. Vlasova. "THE INFLUENCE OF THE TEMPERATURE GRADIENT UNDER STABLE GAS CONDENSATE COOLING ON THE COMPOSITION PARAFFIN DEPOSITS." Petroleum Engineering 22, no. 6 (2024): 213–22. https://doi.org/10.17122/ngdelo-2024-6-213-222.

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The transportation of stable gas condensate, containing high-molecular paraffin hydrocarbons, through an onshore pipeline under low-temperature climatic conditions is complicated by the formation of paraffin deposits when the hydrocarbon feedstock contacts the cold inner wall of the pipeline. In the conditions of stable gas condensate transportation through the pipeline, the precipitated paraffins lead to a decrease of its throughput capacity, an increase of hydraulic resistance, as well as the change of the rheological properties of hydrocarbon raw materials up to the formation of a structure

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12

Murasiewicz, Halina, and Khrystyna Illienko. "Liquid-liquid two phase-system stabilized by tween 40 and 80 surfactants: multiparametric study." Polish Journal of Chemical Technology 26, no. 1 (2024): 51–63. http://dx.doi.org/10.2478/pjct-2024-0006.

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Abstract The purpose of this study was to investigate the impact of process parameters such as interfacial tension, type of surfactants, and their concentration on simple oil-in-water dispersion. Explored systems were prepared with 5% liquid paraffin oil and aqueous phase with emulsifiers Tween 40 of concentrations from 0.008325 mM to 0.025 mM and Tween 80 with concentrations ranging from 0.00375 mM to 0.011 mM. All systems were characterized in terms of their density and interfacial tension. In the next step analysis of droplet size distributions and mean droplet diameter was performed. The r

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13

Takigawa, Toshikazu, Koichi Uchida, Katsunori Takahashi, and Toshiro Masuda. "Swelling and flow properties of tubular poly(vinyl alcohol) gels." Biorheology: The Official Journal of the International Society of Biorheology 36, no. 5-6 (1999): 401–10. http://dx.doi.org/10.1177/0006355x1999036005006005.

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Swelling and flow properties of tubular poly(vinyl alcohol) (PVA) hydrogels prepared with the cooling method were investigated using an inflation testing method. When the tubular hydrogel in liquid paraffin was inflated by using liquid paraffin as a pressure transmitting medium, namely in the case that the liquids inside and outside the gel are both liquid paraffin (P/P combination), the gel showed a slight volume change determined by Poisson’s ratio of the gel. When the gel in water was inflated by liquid paraffin (P/W combination), the gel swelled to large extent compared with the case of P/

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14

Li, Xu, Ji Xian Yang, Fang Ma, et al. "Study on Inter-Relationship of the Nutrients in Substrate and the Production of Demulsifying Compound by a Bacillus sp." Advanced Materials Research 113-116 (June 2010): 974–79. http://dx.doi.org/10.4028/www.scientific.net/amr.113-116.974.

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This work investigated the effect of substrates on de-emulsification capability and the growth of a bacillus sp. (screened by our laboratory).The biomass and de-emulsification ratios(DR) of cultures grown in substrate with the different nutrients (glucose, liquid paraffin, NH4NO3 and yeast) were determined. In the orthogonal tests, the significant of de-emulsification capability in turn is glucose>liquid paraffin>yeast>NH4NO3. The glucose is the highest effect of nutrients on de-emulsification capability and growth. The de-emulsification ratios(DR) and the glucose utilization ratios i

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15

Aromdee, Chantana, Sumon Sakolchai, Unchalee Tattawasart, Thanee Tessiri та Yaowares Suwanphaiboon. "Quality Evaluation of Liquid Paraffin Emulsion Produced in Hospitals(การประเมินคุณภาพของยา Liquid Paraffin Emulsion ที่ผลิตใน โรงพยาบาล)". Thai Journal of Pharmaceutical Sciences 23, № 4 (2000): 173–79. http://dx.doi.org/10.56808/3027-7922.2351.

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16

Gao, Xiao-Yu, Wei-Hong Jiao, Zhi-Jun Zuo, Zhi-Hua Gao та Wei Huang. "DME synthesis from methanol over hydrated γ-Al2O3(110) surface in slurry bed using continuum and atomistic models". Journal of Theoretical and Computational Chemistry 16, № 04 (2017): 1750029. http://dx.doi.org/10.1142/s0219633617500298.

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The possible paths of dimethyl ether (DME) synthesis from methanol over hydrated [Formula: see text]-Al2O3(110) in vacuum and liquid paraffin have been investigated by using density functional theory (DFT). Over hydrated [Formula: see text]-Al2O3(110), the three possible paths of methanol dehydration to DME have been investigated by the DFT method in vacuum and liquid paraffin. DME synthesis from methanol is carried out along the same pathway 2CH3OH(g) [Formula: see text] 2* [Formula: see text] 2CH3OH* [Formula: see text] 2CH3O* [Formula: see text] 2H* [Formula: see text] CH3OCH3* [Formula: se

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17

Yan, Quan Ying, Li Hang Yue, Li Li Jin, Ran Huo, and Lin Zhang. "The Experimental Research on the Thermal Properties of Shape-Stabilized Phase Change Materials." Applied Mechanics and Materials 291-294 (February 2013): 1159–63. http://dx.doi.org/10.4028/www.scientific.net/amm.291-294.1159.

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This paper investigated the thermal performance of shape stabilized phase change paraffin and shape-stabilized phase change fatty acid. And the PCMs are mixtures of 60% 46# paraffin and 40% liquid paraffin, 65 % 48# paraffin and 35% liquid paraffin,30%capric acid and 70% lauric acid, 30%capric acid and 70% myristic acid. Support material is high-density polyethylene. The results in this paper show that: Thermal stability of both of the two types of phase change materials are good, thermal stability of shape stabilized phase change fatty acid is better than that of paraffin. Results in this pap

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18

Jiang, Feng, Yong Le Hou, Yong Lin Hu, Wei Dong Zhu, and Qing Hua Wang. "Setting for the Application of Phase Change Paraffin in Block Masonry." Applied Mechanics and Materials 448-453 (October 2013): 1308–11. http://dx.doi.org/10.4028/www.scientific.net/amm.448-453.1308.

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This paper studies the insulation properties of masonry filling paraffin composite phase change material. With high density polyethylene (HDPE) as wrapping materials and solid-liquid mixing paraffin as phase change materials, solid-liquid mixed paraffin phase change material with different amount of admixture is prepared, and the problem of flowing after paraffin phase change is then solved. The phase change temperature and the phase change latent heat of composite phase change material with different amount of admixture are tested. The results showed that the composite material with 30% of 52

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19

Li, Xiaoqing, Renqiang Liu, Tianyu Zhang, Peng Yu, and Xiaoyan Liu. "Division of paraffin melting zone based on multiscale experiments." Thermal Science, no. 00 (2021): 140. http://dx.doi.org/10.2298/tsci200818140l.

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Phase change energy storage materials are widely used in the field of renewable energy. Paraffin is one of the common phase change energy storage materials. As a multi-component hydrocarbon mixture, the melting of paraffin is different from that of pure substance. In addition to the solid and liquid zones, there is also a fuzzy zone in which solid and liquid coexist. In this paper, the melting characteristics of paraffin in phase transition zone are studied by multi-scale experiments. Through the visualization experiment of square cavity paraffin melting, the solid zone, fuzzy zone and liquid

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20

Lauque, Dominique, Georges Dongay, Thierry Levade, Claude Caratero, and Pierre Carles. "Bronchoalveolar Lavage in Liquid Paraffin Pneumonitis." Chest 98, no. 5 (1990): 1149–55. http://dx.doi.org/10.1378/chest.98.5.1149.

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21

Pickard, James M., and E. Grant Jones. "Liquid-Phase Oxidation Kinetics: Paraffin Blends." Energy & Fuels 12, no. 6 (1998): 1241–44. http://dx.doi.org/10.1021/ef980063r.

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22

Paraskevaides, E. C. "Fatal lipid pneumonia and liquid paraffin." International Journal of Clinical Practice 44, no. 11 (1990): 509–10. http://dx.doi.org/10.1111/j.1742-1241.1990.tb10077.x.

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23

Avithi Kanniappan, Suresh, та Udaya Bhaskar Reddy Ragula. "Effect of Reduction of Pt–Sn/α-Al2O3 on Catalytic Dehydrogenation of Mixed-Paraffin Feed". Catalysts 10, № 1 (2020): 113. http://dx.doi.org/10.3390/catal10010113.

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The effect of the Pt–Sn/α-Al2O3 catalyst reduction method on dehydrogenation of mixed-light paraffins to olefins has been studied in this work. Pt–Sn/α-Al2O3 catalysts were prepared by two different methods: (a) liquid phase reduction with NaBH4 and (b) gas phase reduction with hydrogen. The catalytic performance of these two catalysts for dehydrogenation of paraffins was compared. Also, the synergy between the catalyst reduction method and mixed-paraffin feed (against individual paraffin feed) was studied. The catalysts were examined using X-ray diffraction (XRD), scanning electron microscopy

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Kopteva, Alexandra V., Alexander Dementyev, and Vladimir Koptev. "Analysis of the Structure of Viscous Oil Flow for the Development of a System to Prevent the Formation of Paraffin Deposits in Pipelines." Materials Science Forum 1022 (February 2021): 42–51. http://dx.doi.org/10.4028/www.scientific.net/msf.1022.42.

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The detection of paraffin deposits in the systems of main oil pipelines today is a very important problem, since they lead to emergency oil spills, environmental disasters and economic losses both for the enterprise and for the country as a whole. This work is aimed at studying the physicochemical properties of asphaltic resin paraffins, as well as the mechanism of phase transition from liquid to crystalline. Such studies make it possible to estimate the absorption coefficient of the paraffin phase, which was previously not possible due to the complex nature of oil, consisting of hydrocarbons

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25

Fredi, Giulia, Matteo Favaro, Damiano Da Ros, Alessandro Pegoretti, and Andrea Dorigato. "Thermotropic Optical Response of Silicone–Paraffin Flexible Blends." Polymers 14, no. 23 (2022): 5117. http://dx.doi.org/10.3390/polym14235117.

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Organic phase change materials, e.g., paraffins, are attracting increasing attention in thermal energy storage (TES) and thermal management applications. However, they also manifest interesting optical properties such as thermotropism, as they can switch from optically opaque to transparent reversibly and promptly at the melting temperature. This work aims at exploiting this feature to produce flexible silicone-based blends with thermotropic properties for applications in glazed windows or thermal sensors. Blends are produced by adding paraffin (Tm = 44 °C, up to 10 phr) to a silicone bicompon

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26

Zhang, Lixi, Zhengyang Zhang, and Hui Yin. "Comprehensive Study on Melting Process of Phase Change Material by Using Paraffin Coupled Finned Heating Plate for Heat Transfer Enhancement." Sustainability 14, no. 5 (2022): 3097. http://dx.doi.org/10.3390/su14053097.

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Paraffin is a low-temperature phase change material, which is often used to recover and store heat in a solar thermal utilization system. This study aims to reveal the development and migration law of paraffin melting interface with time under the influence of a finned heating plate, as well as the heat transfer mechanism, and obtain the ways and methods to enhance the heat transfer in phase change material through visual experiments and numerical simulation. The research shows that once the paraffin with a high liquid fraction connects the mushy zone between the fin and the top wall, the vort

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Nailwal, Disha, Himansu Chopra, Alankar Shrivastav, and Yusra Ahmad. "FORMULATION AND EVALUATION OF VEGETABLE OIL BASED EMULGEL OF FLUCONAZOLE." Journal of Drug Delivery and Therapeutics 9, no. 4 (2019): 415–18. http://dx.doi.org/10.22270/jddt.v9i4.3185.

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Aim: The aim of the study was to prepare an emulgel formulation of fluconazole using vegetable oil (sesame oil) and compare with liquid paraffin Fluconazole emulgel. Emulgel has emerged as a promising drug delivery system for delivery of hydrophobic drug. Fluconazole is an anti- fungal medication use for a number of fungal infections it belong to a group of medicine called azole antibiotics. The edible oil is used as it has no side effects. Method: The oil phase of emulsion was prepared by dissolving span 20 in light liquid paraffin and vegetable oil & drug. The aqeous phase is prepared by

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28

Tertyshna, Olena, Konstantin Zamikula, Oleg Tertyshny, Olena Zinchenko, and Petro Topilnytskyi. "Phase Equilibrium of Petroleum Dispersion Systems in Terms of Thermodynamics and Kinetics." Chemistry & Chemical Technology 15, no. 1 (2021): 132–41. http://dx.doi.org/10.23939/chcht15.01.132.

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The process of paraffin formation has been considered, including the peculiarities of the paraffin structure as a result of phase transitions with a decreasing temperature. Mathematical models for thermodynamic and kinetic calculations of the "solid-liquid" system phase equilibrium have been developed. To shift the "fuel oil-paraffin" balance towards the liquid, it is necessary to reduce the activity ratio of solid and liquid phases by introducing into the system a substance with a lower solubility parameter. To increase the stability, as well as structural and mechanical characteristics of fu

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Chen, Dandan. "A New Method for the Analysis of Bacterial Endotoxins in Ultrapure Paraffin Oil." Journal of Analytical Methods in Chemistry 2014 (2014): 1–4. http://dx.doi.org/10.1155/2014/575246.

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The paper demonstrates the feasibility of the gel-clot method for the analysis of bacterial endotoxins in water extracts of ultrapure paraffin oil which is a water insoluble oily medical device. Because ultrapure paraffin oil is water insoluble oily liquid, the ultrapure paraffin oil (10 mL) was shaken with 10 mL water for 15 minutes at 2000 rpm, the endotoxin present was extracted to the aqueous phase without interference inhibition/enhancement of the product, the recovery of the endotoxin added to the ultrapure paraffin oil was determined. A validation study confirmed that endotoxins present

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Ifthacharo, M., A. P. A. Mustari, S. Permana, and A. Nuril. "Simulation of Erosion Behavior of a Paraffin Plate with Particle Method." Journal of Physics: Conference Series 2328, no. 1 (2022): 012006. http://dx.doi.org/10.1088/1742-6596/2328/1/012006.

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Abstract There are many mechanisms in a reactor shutdown function of MSR and inherent self-stabilization. One of those mechanisms is the fuel-salt drain system. The present study focused on the melting and solidification phenomenon that occurs in the freeze valve. An experiment was performed to investigate the erosion behavior of a solid plate by an impinging liquid to time and the effects of fluid viscosity. In addition, numerical modeling based on the MPS method to visualize the heat distribution in the plate will also be carried out. The experiment will be conducted by varying the parameter

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Peng, De-Xing, and Yuan Kang. "Preparation of SiO2 nanoparticles and investigation of its tribological behavior as additive in liquid paraffin." Industrial Lubrication and Tribology 66, no. 6 (2014): 662–70. http://dx.doi.org/10.1108/ilt-08-2012-0075.

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Purpose – The purpose of this work is to study tribological properties of liquid paraffin with SiO2 nanoparticles as an additive, which are made by surface-modification method. Taguchi robust designs for optimization in synthesizing SiO2 nanoparticles by sol-gel method. Design/methodology/approach – The tribological properties of the SiO2 nanoparticles as additive in liquid paraffin are studied by ball-on-ring wear tester to find out optimal concentration, and the mechanism of the reduction of wear and friction will be investigated by scanning electron microscopy (SEM), energy dispersive spect

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Kasmayuda, Muhammad, Mia Audina, Dede Mahdiyah, and Noval Noval. "Pengaruh Konsentrasi Carbopol 940 dan Paraffin Liquid terhadap Evaluasi Sediaan Serum Emulgel Ekstrak Pegagan (Centella asiatica (L.) Urban) Sebagai Anti Jerawat." Journal Pharmaceutical Care and Sciences 5, no. 1 (2024): 101–12. https://doi.org/10.33859/jpcs.v5i1.663.

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Latar Belakang: Jerawat merupakan salah satu masalah kesehatan pada kulit yang sering dialami setiap orang. Jerawat atau acne merupakan salah satu penyakit kulit yang umum terjadi diberbagai usia mulai dari remaja hingga dewasa. Pegagan (Centella asiatica (L.) Urban) merupakan tumbuhan yang memiliki khasiat sebagai antibakteri untuk mengatasi bakteri penyebab jerawat. Serum emulgel adalah sediaan liquid yang memiliki bahan aktif berkonsentrasi tinggi dengan basis kombinasi antara emulsi dan gel.Tujuan: Mengidentifikasi formulasi variasi konsentrasi carbopol 940 dan paraffin liquid berdasarkan

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Huseynova, B. A., B. M. Aliyev, and N. F. Gafarova. "High molecular compounds of Azeri oil field." Azerbaijan Oil Industry, no. 03 (March 2024): 45–48. http://dx.doi.org/10.37474/0365-8554/2024-03-45-48.

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The article is devoted to the results of the study of the composition of the vacuum residue of oil from the Azeri field, which is produced in Azerbaijan sector from Caspian sea a depth of 3000–4000 m. The oil is light, low-sulfur, paraffinic (5.1 % solid paraffins), contains a small amount of heteroatoms, without asphaltenes. The vacuum residue (>450 oC) was separated into naphthene-paraffin, aromatic and resin components with the method of column liquid eluent-adsorption chromatography. The structural group composition of individual groups was studied using IR and PMR spectroscopy. As a re

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Huseynova, B. A., B. M. Aliyev, and N. F. Gafarova. "High molecular compounds of deep-water Guneshli oil." Azerbaijan Oil Industry, no. 09 (September 15, 2023): 35–37. http://dx.doi.org/10.37474/0365-8554/2023-09-35-37.

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The article is devoted to the results of the study of the component composition of the vacuum residue of oil from the deep-water Guneshli field, which is produced in the Caspian sector from a depth of 3000–4000 m. The oil is light, low-sulfur, paraffinic (3.7 % solid paraffins), contains a small amount of heteroatoms, without asphaltenes. The vacuum residue (>450 oC) was separated into naphthene-paraffin, aromatic and resin components with the method of column liquid eluent-adsorption chromatography. The structural group composition of individual groups was studied using IR and PMR spectros

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Baskakov, Sergey A., Yulia V. Baskakova, Eugene N. Kabachkov, et al. "Fast Charging of a Thermal Accumulator Based on Paraffin with the Addition of 0.3 wt. % rGO." Journal of Composites Science 7, no. 5 (2023): 193. http://dx.doi.org/10.3390/jcs7050193.

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The composite of paraffin with reduced graphene oxide (paraffin/rGO) was obtained at 70 °C by the mechanical mixing of the components followed by ultrasonic dispersion. The introduction of only 0.3 wt.% rGO stained the paraffin black. It has been shown that thermal batteries made from 160 grams of pure paraffin and 160 grams of the composite are equally slow at charging when placed in boiling water. However, two minutes of microwave heating increases the temperature of the pure paraffin battery to only 32 °C, while the temperature of the paraffin/rGO composite battery rises to 74 °C, which is

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Xu, Zhe, Jian Qiang Li, and Guo Cai Zhang. "Synthesis and Properties of Microencapsulated Solid Paraffin Phase Change Materials." Key Engineering Materials 519 (July 2012): 1–5. http://dx.doi.org/10.4028/www.scientific.net/kem.519.1.

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To prepare the phase change materials for efficient low-temperature latent heat storage, microcapsules with commercial solid paraffin were synthesized by using in-situ polymerization process. Liquid paraffin was used first as core materials since it facilitates the direct observation of containment by the shell of melamine-formaldehyde resin (MF resin), and examines easily the optimal synthesizing condition. The effects of emulsion processes, pre-polymerization conditions, shell material content and reaction time on the quality of microcapsules were investigated. The experimental investigation

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Afandiyeva, L., G. Nasibova, Yu. Cherepnova, F. Chingiz, and T. Najafov. "APPLICATION OF DIBROMOBENZOATE Mn,Co,Cr IN LIQUID PHASE AEROBIC OXIDATION OF NAPHTHEN-PARAFFIN CONCENTRATE." POLISH JOURNAL OF SCIENCE, no. 83 (February 19, 2025): 8–10. https://doi.org/10.5281/zenodo.14895200.

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The results of a study of the oxidation reaction of naphthene-paraffin concentrate obtained from a mixture of Azerbaijani petroleum in the presence of dibromobenzoate metals in the liquid phase are presented. It has been shown that the synthesized transition metal salts can be used as effective catalysts in the reactions of liquid-phase oxidation of naphthene-paraffin concentrate to produce synthetic petroleum acids.

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Abdel-Rahman, Zaid A., and Omar S. Latif. "Paraffin Separation Vacuum Distillation Column Analysis in Linear Alkyl Benzene (Lab) Chemical Plant Using Chemcad Simulator." Tikrit Journal of Engineering Sciences 16, no. 1 (2009): 15–30. http://dx.doi.org/10.25130/tjes.16.1.02.

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Simulated column performance curves were constructed for existing paraffin separation vacuum distillation column in LAB plant (Arab Detergent Company/Baiji- Iraq). The variables considered in this study are the thermodynamic model option, top vacuum pressure, top and bottom temperatures, feed temperature, feed composition & reflux ratio. Also simulated columns profiles for the temperature, vapor & liquid flow rates composition were constructed. Four different thermodynamic model options (SRK, TSRK, PR, and ESSO) were used, affecting the results within 1-25% variation for the most cases

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Yu, Pei Zhi. "Preparation and Performance of Wax Emulsionusing in Drilling Fluid." Applied Mechanics and Materials 552 (June 2014): 286–90. http://dx.doi.org/10.4028/www.scientific.net/amm.552.286.

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An O/W type paraffin wax emulsions was prepared using Tweenand Span emulsifiers, and liquid paraffin. The influences of temperature, HLB and surfactants concentration in particle size of paraffin wax emulsions were studied, as were the stability of paraffin wax emulsions. The application performances in drilling fluid of paraffin wax emulsions were researched with respect to artificial core line swelling and shale recovery. Results showed that the best conditions of preparation of emulsified wax: surfactants concentration was 5%, temperature was 50°Cand HLB was 10.1-10.5. It was found that par

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Rao, Longshi, Bin Sun, Yang Liu, et al. "Highly Stable and Photoluminescent CsPbBr3/Cs4PbBr6 Composites for White-Light-Emitting Diodes and Visible Light Communication." Nanomaterials 13, no. 2 (2023): 355. http://dx.doi.org/10.3390/nano13020355.

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Inorganic lead halide perovskite is one of the most excellent fluorescent materials, and it plays an essential role in high-definition display and visible light communication (VLC). Its photochromic properties and stability determine the final performance of light-emitting devices. However, efficiently synthesizing perovskite with high quality and stability remains a significant challenge. Here, we develop a facile and environmentally friendly method for preparing high-stability and strong-emission CsPbBr3/Cs4PbBr6 composites using ultrasonication and liquid paraffin. Tuning the contents of li

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Olorunsola, Emmanuel O., and Stephen O. Majekodunmi. "EMULSIFYING PROPERTIES OF AFZELIA GUM IN LIQUID PARAFFIN EMULSION." International Journal of Pharmacy and Pharmaceutical Sciences 8, no. 11 (2016): 195. http://dx.doi.org/10.22159/ijpps.2016v8i11.14509.

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Objective: Afzelia africana gum has been shown to possess surface activity. It is a good alternative to sodium carboxy methylcellulose in terms of suspending properties. This work was aimed at evaluating the emulsifying properties of the gum in liquid paraffin emulsion.Methods: Liquid paraffin emulsions (200 ml each) were prepared with different concentrations (1, 2, 3, 5 and 10 % w/v) of afzelia gum as an emulsifying agent. Similar preparations containing standard acacia gum at corresponding concentrations were also made. Liquid paraffin emulsions (200 ml each) were equally prepared using 60

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Sandyga, Mikhail S., Ivan A. Struchkov, and Mikhail K. Rogachev. "Research of Temperature Conditions of Organic Sediments Formation in the Productive Formation at Paraffinic Oil Well Production." Недропользование 21, no. 2 (2021): 84–93. http://dx.doi.org/10.15593/2712-8008/2021.2.6.

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The paper presents the studies results of the temperature conditions for the formation of organic (asphalt-resin-paraffinic) deposits in the productive formation during the downhole production of paraffinic oil, including the results of experimental studies to assess the temperature of oil saturation with paraffin in the pore space of reservoir rocks. The studies were carried out in order to substantiate and develop a technology for preventing such deposits in the "reservoir - well" system. The results of filtration and rheological studies showed that for the same oil, the wax saturation tempe

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Fall, David J., Jaimie L. Fall, and Kraemer D. Luks. "Liquid-liquid-vapor immiscibility limits in carbon dioxide + n-paraffin mixtures." Journal of Chemical & Engineering Data 30, no. 1 (1985): 82–88. http://dx.doi.org/10.1021/je00039a028.

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Estrera, Susana S., and Kraemer D. Luks. "Liquid-liquid-vapor equilibria behavior of certain ethane + n-paraffin mixtures." Journal of Chemical & Engineering Data 32, no. 2 (1987): 201–4. http://dx.doi.org/10.1021/je00048a022.

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Sobkowiak, Sylwester, Hanna Zarzycka, and Jadwiga Śliwka. "The influence of long-term storage in liquid nitrogen on survival and pathogenicity of Phytophthora Infestans isolates." Journal of Plant Protection Research 52, no. 4 (2012): 479–85. http://dx.doi.org/10.2478/v10045-012-0077-5.

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Abstract A set of 14 aggressive Phythophthora infestans (Mont.) de Bary isolates with a wide range of virulence, was stored for eight years (2002-2010) in liquid nitrogen at -196°C (209 samples) and under paraffin oil at 7°C (70 test tubes). The survival rate of samples stored in liquid nitrogen was scored as 88%, 45 days after thawing. The revived isolates were passaged through potato tissues four times and tested for virulence on a set of 11 Black’s differentials. The mean number of virulence factors per isolate, of these P. infestans isolates evaluated before storage, was 7.4. The isolates

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N, Mamulaishvili, Batumi Partskhaladze G, Chavleshvili G, and Janelidze O. "Composition of a Mixture for Breaking and Washing off, Oil Deposits (arpd). Stimulation of Residual Oil Inflow Using Process Fluids." Petroleum and Chemical Industry International 5, no. 3 (2022): 162–63. https://doi.org/10.33140/pcii.05.03.05.

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In order to increase the efficiency of residual oil production, which is characterized by an increased content of asphaltenes, paraffins and resins, the role of using chemical methods to remove asphaltene-resin-paraffin deposits (ARPD) from oilfield equipment, wells and bottom hole formation zone. The article discusses the conditions for the formation of deposits of paraffin deposits in equipment, during oil production (tubing) and also during the storage of transit oil in stationary tanks. An extractive method is proposed, which ensures the removal of deposits of paraffin deposits with the pa

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Atiya, Ghalib A., Abdulqadier H. Al khazraji, and Sahar H. Mourad. "The Effect of the Polymer Type in the Three-Phases Fischer-Tropsch Synthesis Catalyzed by suspended Iron Nanocatalysts." Mediterranean Journal of Chemistry 9, no. 5 (2019): 363–70. http://dx.doi.org/10.13171/mjc01912021046gaa.

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Fischer-Tropsch synthesis (FTS) was conducted over paraffin-iron catalysts of three phases system with synthetic polymers that contains different compositions. The suspended iron nanocatalyst was introduced into the slurry reactors Fischer-Tropsch with range temperature (220-320)oC at 2.0 MPa, the atomic ratio contains: 100Fe/100 Paraffin/10 wt% polymer. The study of phase, structure and morphology of the nanocatalyst using x-ray diffraction (XRD) and atomic force microscope (AFM) techniques confirmed that there are two phases of iron oxides Fe3O4 and δ-FeOOH are existed. Maximum conversion of

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Hussien Al khazraji, Abdulqadier, Ziad T. I. Alkayar, Maher Alwan Hussen, and Athraa Mohamed Rashed. "Towards the comparison synthesis of Fe3O4 nanocatalysts using two different systems in Fischer–Tropsch process." Bulletin of the Chemical Society of Ethiopia 39, no. 3 (2024): 503–14. https://doi.org/10.4314/bcse.v39i3.9.

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Two types of nanocatalyst were synthesized using two different catalytic systems Fe3O4/ paraffin/polymethyl methacrylate (Fe3O4/pr/PMMA) and Fe3O4/paraffin/urotropine (Fe3O4/Pr/Uro) in Fischer–Tropsch synthesis (FTS) and downloaded in the slurry-bed reactor (SBR), their effect in the FTS performance and liquid hydrocarbons productivity were studied. The thermal decomposition method was used to prepare the nanoiron oxide nanocatalysts using the two systems. The results show that the two different systems affect the sizes of particle and gave nanoparticles with various sizes. The Fe3O4/paraffin/

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Zhao, Hai Chao, Yu Lin Qiao, Yan Zang, and Qing Zhang. "The Preparation and Tribological Properties of Multi-Layer Graphene as Paraffin Liquid Additives." Advanced Materials Research 1058 (November 2014): 56–60. http://dx.doi.org/10.4028/www.scientific.net/amr.1058.56.

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Different thickness multi-layer graphene were prepared by the method of liquid ultrasonic stripping and characterized by XRD, SEM and TEM. Friction and wear properties of graphene liquid dispersing system were investigated using an Multi-functional reciprocating friction and wear tester in ambient condition. Results indicate that the graphene were in thickness of 10nm-100nm. Multi-layer graphene showed good anti-friction and anti-wear properties as paraffin liquid additives. Multi-layer graphene liquid dispersing system had the best tribological properties with 20N and 0.01wt%, and the average

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Rothan, Yahya Ali. "Investigation of hybrid nanomaterial application in melting process of paraffin enhanced with nanoparticles." Physica Scripta 96, no. 12 (2021): 125253. http://dx.doi.org/10.1088/1402-4896/ac3877.

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Abstract Current study is about the charging process of paraffin within a tank with spiral duct. The paraffin has been enhanced with adding CuO nanoparticles. The hot fluid within the spiral pipes is hybrid nanomaterial. The fraction of nano-sized material is poorer than 0.04 and selecting single phase methodology is acceptable. Finite volume approach with including implicit method was applied to solve these transient equations. Grids with structural configurations were utilized for two suggested styles of containers. Verification with empirical data reveals that nice agreement exist for utili

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