Log in

Relevant bibliographies by topics / MIBK / Journal articles

To see the other types of publications on this topic, follow the link: MIBK.

Journal articles on the topic 'MIBK'

Author: Grafiati

Published: 11 September 2023

Last updated: 31 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'MIBK.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Saito, Isao, Harumi Oshima, Norihisa Kawamura, and Masuo Yamada. "Screening Method for Determination of High Levels of Cadmium, Lead, and Copper in Foods by Polarized Zeeman Atomic Absorption Spectrometry Using Discrete Nebulization Technique." Journal of AOAC INTERNATIONAL 71, no. 4 (1988): 829–32. http://dx.doi.org/10.1093/jaoac/71.4.829.

Full text

Abstract:

Abstract A screening method for determination of cadmium, lead, and copper in foods was developed. The sample (1-3 g) is digested with HN03- H2S04-HCI04 in a centrifuge tube attached to a straight glass tube that prevents loss of HN03 by volatilization. After digestion, potassium iodide, H2S04, and MIBK (4-methyl 2-pentanone) are added, and the metals are extracted with MIBK as metal iodides. The MIBK solution is injected and the metals are determined by flame polarized Zeeman atomic absorption spectrometry using a discrete nebulization technique. Recoveries of metals from fortified milk powde

APA, Harvard, Vancouver, ISO, and other styles

2

Hu, Yingjie, Yuxin Mei, Baining Lin, et al. "An active and stable multifunctional catalyst with defective UiO-66 as a support for Pd over the continuous catalytic conversion of acetone and hydrogen." RSC Advances 11, no. 1 (2021): 48–56. http://dx.doi.org/10.1039/d0ra09217g.

Full text

Abstract:

The one-pot synthesis of methyl isobutyl ketone (MIBK) and methyl isobutyl methanol (MIBC) from acetone and hydrogen is a typical cascade reaction comprised of aldol condensation-dehydration-hydrogenation.

APA, Harvard, Vancouver, ISO, and other styles

3

Yoon, Jung-Hwan, Yong-Geon Shin, Mary Beth Kirkham, et al. "A Simplified Method for Anionic Surfactant Analysis in Water Using a New Solvent." Toxics 10, no. 4 (2022): 162. http://dx.doi.org/10.3390/toxics10040162.

Full text

Abstract:

Anionic surfactants (AS) are becoming a major emerging contaminant of waters due to their widespread use in household and industrial products. The standard chloroform method for analysis of AS in water relies on chloroform extraction of a methylene blue active substance (MBAS), which contains ion pairs between methylene blue (MB) molecules (positively charged) and AS. Due to the poor extractability of chloroform, the procedure is complicated, time-consuming, and subject to anionic interferences. A mixture of methyl isobutyl ketone (MIBK)–1,2-dichloroethane (DCE) at a 3:1 ratio of MIBK:DCE prov

APA, Harvard, Vancouver, ISO, and other styles

4

Al-Rabiah, Abdulrahman A., Raed R. Alkathiri, and Abdulaziz A. Bagabas. "Process Development for Methyl Isobutyl Ketone Production Using the Low-Pressure One-Step Gas-Phase Selective Hydrogenation of Acetone." Processes 10, no. 10 (2022): 1992. http://dx.doi.org/10.3390/pr10101992.

Full text

Abstract:

Methyl isobutyl ketone (MIBK) is a highly valuable product in the chemical industry. It is widely used as an extracting agent for heavy metals, antibiotics, and lubricating oils. Generally, MIBK can be produced by three-step and one-step liquid-phase methods. These methods are expensive and energy-demanding due to the high pressure and low conversion of acetone. A novel nano-Pd/nano-ZnCr2O4 catalyst was developed to produce MIBK with high conversion and selectivity of 77.3% and 72.1%, respectively, at 350 °C and ambient pressure, eliminating the need for high pressure in conventional MIBK proc

APA, Harvard, Vancouver, ISO, and other styles

5

Du, Chang Hai, Zhuo Min Yang, Guo Bin Zhao, and Li Jie Zhu. "One-Step Synthesis of Methyl Isobutyl Ketone from Acetone Catalysed by Ni-Zirconia." Advanced Materials Research 391-392 (December 2011): 908–11. http://dx.doi.org/10.4028/www.scientific.net/amr.391-392.908.

Full text

Abstract:

The one-step synthesis of methyl isobutyl ketone from acetone (MIBK) and H2 in liquid phase was studied over Ni-zirconia catalyst prepared by precipitation. The performances of Ni/ZrO2 catalysts were evaluated by the conversion of acetone and the selectivity of MIBK. The effect of different preparation conditions such as aging temperature, calcination temperature, nickel content and reduction temperature was investigated. The results showed that high acetone conversions of up to 33% and MIBK selectivities of up to 85% were recorded at a nickel content of 13.0 wt % and the reduction temperature

APA, Harvard, Vancouver, ISO, and other styles

6

Ghebghoub, Fatima, Nadjoua Labed, and Djamel Barkat. "Improved copper(II) extraction from aqueous solutions using di-2-ethylhexyl phosphoric acid and MIBK." STUDIES IN ENGINEERING AND EXACT SCIENCES 5, no. 2 (2024): e12318. https://doi.org/10.54021/seesv5n2-820.

Full text

Abstract:

In the present work, the synergistic extraction of copper(II) from sulfate media with di(2-ethylhexyl) phosphoric acid (D2EHPA) and methylisobutylkétone (MIBK) in chloroform at 25 °C, has been carried out. , with a focus on how pH, extractant concentration and diluent selection affect the extraction process. The extracted species in the organic phase have been found to be CuL2.2HL and CuL2. In the presence of MIBK, the extraction of copper by D2EHPA in the system chloroform-water (Na2SO4) showed that synergy effect increase with the concentration of the synergistic reagent. The results indicat

APA, Harvard, Vancouver, ISO, and other styles

7

Xiong, Jing, Yang Li, Xiaomeng Zhang, Yong Wang, Yanlin Zhang, and Tao Qi. "The Extraction Mechanism of Zirconium and Hafnium in the MIBK-HSCN System." Separations 11, no. 4 (2024): 93. http://dx.doi.org/10.3390/separations11040093.

Full text

Abstract:

The extraction of zirconium (Zr) and hafnium (Hf) in methyl isobutyl ketone (MIBK)—thiocyanic acid (HSCN) system has been widely used in the production of nuclear-grade zirconium and hafnium in industry, while the extraction mechanism was not adequately studied. In this study, the extraction and stripping equilibrium of Zr and Hf in the MIBK-HSCN system was studied. The results showed that elevated HCl concentration can increase the distribution ratio of SCN− and decrease that of Zr/Hf in organic phase. In the stripping process, HCl concentration and the Organic/Aqueous (O/A) phase ratio playe

APA, Harvard, Vancouver, ISO, and other styles

8

Zelinková, Hana, Rostislav Červenka, and Josef Komárek. "Stabilizing Agents for Calibration in the Determination of Mercury Using Solid Sampling Electrothermal Atomic Absorption Spectrometry." Scientific World Journal 2012 (2012): 1–7. http://dx.doi.org/10.1100/2012/439875.

Full text

Abstract:

Tetramethylene dithiocarbamate (TMDTC), diethyldithiocarbamate (DEDTC), and thiourea were investigated as stabilizing agents for calibration purposes in the determination of mercury using solid sampling electrothermal atomic absorption spectrometry (SS-ETAAS). These agents were used for complexation of mercury in calibration solutions and its thermal stabilization in a solid sampling platform. The calibration solutions had the form of methyl isobutyl ketone (MIBK) extracts or MIBK-methanol solutions with the TMDTC and DEDTC chelates and aqueous solutions with thiourea complexes. The best resul

APA, Harvard, Vancouver, ISO, and other styles

9

Das, Nigamananda. "Progress in One-Pot Synthesis of Methyl Isobutyl Ketone Using Multifunctional Layered Based Catalysts." Key Engineering Materials 571 (July 2013): 169–96. http://dx.doi.org/10.4028/www.scientific.net/kem.571.169.

Full text

Abstract:

Methyl isobutyl ketone (MIBK) is one of the most widely produced and used aliphatic ketones worldwide. The one-step MIBK process with no intermediate separation steps using multifunctional catalysts is an important development towards greener organic synthesis and generates tremendous interest among the researcher across the globe. The single step process is facile and more economically viable and has provided opportunity to develop new and improved catalyst systems capable of operating under mild conditions. A widely variety of catalytic systems have been used in one-step process during last

APA, Harvard, Vancouver, ISO, and other styles

10

Vézina, Manon, Adriane B. Kobusch, Patrick du Souich, Erminio Greselin, and Gabriel L. Plaa. "Potentiation of chloroform-induced hepatotoxicity by methyl isobutyl ketone and two metabolites." Canadian Journal of Physiology and Pharmacology 68, no. 8 (1990): 1055–61. http://dx.doi.org/10.1139/y90-159.

Full text

Abstract:

The hepatonecrogenic properties of chloroform (CHCl3) can be modified by the administration of various chemicals. The ability of methyl isobutyl ketone (MIBK) and its two major metabolites, 4-methyl-2-pentanol (4MPOL) and 4-hydroxymethyl isobutyl ketone (4-OHMIBK) to potentiate the liver injury induced by CHCl3 was assessed in rats. The parent compound and both metabolites significantly increased the liver damage induced by CHCl3, as demonstrated by the elevation of the plasma activity of two transferases alanine aminotransferase and ornithine carbamoyl transferase and by the severity of the m

APA, Harvard, Vancouver, ISO, and other styles

11

Mihajlovic, Randjel, Natasa Ignjatovic, Marija Todorovic, Ivanka Holclajtner-Antunovic, and Vesna Kaljevic. "Spectrophotometric determination of phosphorus in coal and coal ash using bismuth-phosphomobybdate complex." Journal of the Serbian Chemical Society 68, no. 1 (2003): 65–73. http://dx.doi.org/10.2298/jsc0301065m.

Full text

Abstract:

A modified spectrophotometric method using the bismuth phosphomolybdate complex for the determination of phosphorus in coal and coal ash is suggested. Bismuth together with phosphate and molybdate forms a very stable complex in acid medium which turns blue ("molibdenum blue") by reduction with ascorbic acid. The apparent molar absorptivity of PBiMo is 1.66x104 dm3 mol-1cm-1 at 720 nm and 2.10x104 dm3 mol-1cm-1 at 670 nm isobutyl methyl ketone (MIBK). Interference caused by the ions present are within the tolerance limits (?2 %). Beer?s law is obeyed in the for concentration range to 0.6 ?g/mL

APA, Harvard, Vancouver, ISO, and other styles

12

Rivas, Sandra, Carlos Vila, Valentín Santos, and Juan Carlos Parajó. "Furfural production from birch hemicelluloses by two-step processing: a potential technology for biorefineries." Holzforschung 70, no. 10 (2016): 901–10. http://dx.doi.org/10.1515/hf-2015-0255.

Full text

Abstract:

Abstract Birch samples were subjected to non-isothermal autohydrolysis to obtain a solution of hemicellulosic saccharides and a solid phase mainly made up of cellulose and lignin. Based on kinetic modeling, operational conditions were identified which give rise to soluble saccharides and furfural derived from xylan in a yield of 80.5%. The soluble mixture was supplemented with 1% sulfuric acid and heated (directly or in the presence of methyl isobutyl ketone, MIBK) for furfural production. MIBK is used as an extraction agent to limit furfural consumption by side reactions. Operating in single

APA, Harvard, Vancouver, ISO, and other styles

13

Santoso, Imam, Tritiyatma H. N, and Ana Titian. "EKSTRAKSI EMAS DARI LIMBAH PAPAN SIRKUIT TELEPON GENGGAM MENGGUNAKAN TEKNIK MEMBRAN CAIR EMULSI." JRSKT - Jurnal Riset Sains dan Kimia Terapan 1, no. 2 (2011): 111. http://dx.doi.org/10.21009/jrskt.012.06.

Full text

Abstract:

Penelitian ini bertujuan untuk menentukan persen ekstraksi emas dari limbah papan sirkuit telepon genggam dengan teknik membran cair emulsi menggunakan MIBK sebagai carrier. Reaksinya terjadi secara simultan di permukaan membran, antara senyawa yang akan dipisahkan pada fasa umpan dengan senyawa pembawa pada fasa organik. Logam emas hasil reaksi akan terdifusi ke fasa membran yang pada akhirnya hasil ekstraksi terkumpul dan terkonsentrasi di fasa penerima. Sebelum diaplikasikan ke limbah telepon , terlebih dahulu dipelajari beberapa parameter yang berpengaruh terhadap perolehan persen ekstraks

APA, Harvard, Vancouver, ISO, and other styles

14

Inci, I., Y. S. Asçi, and A. F. Tuyun. "Reactive Extraction of L (+) Tartaric Acid by Amberlite LA-2 in Different Solvents." E-Journal of Chemistry 8, s1 (2011): S509—S515. http://dx.doi.org/10.1155/2011/167945.

Full text

Abstract:

The extraction of L(+) tartaric acid from aqueous solutions by amberlite LA-2 is a secondary amine mixture in different diluent solvents. Extraction equilibria of L(+) tartaric acid by amberlite LA-2 in 1-octanol, cyclohexane, isooctane, hexane, methyl isobutyl ketone (MIBK) solvents at temperature 298.15 K have been measured. The batch extraction experiments distribution coefficients (D), loading factors (Z) and extraction efficiency (E) were calculated. The maximum removal of L(+) tartaric acid is 91 % with MIBK and 0.92 mol.L-1initial concentration of Amberlite LA-2.

APA, Harvard, Vancouver, ISO, and other styles

15

Yoon, Jung-Hwan, Yong Geon Shin, Hyuck Soo Kim, M. B. Kirkham, and Jae E. Yang. "Screening of a Novel Solvent for Optimum Extraction of Anionic Surfactants in Water." Toxics 10, no. 2 (2022): 80. http://dx.doi.org/10.3390/toxics10020080.

Full text

Abstract:

Anionic surfactants (AS) are detrimental aquatic pollutants due to their well-characterized toxicity to aquatic organisms. The concentration of AS in aquatic environments is increasing because of their extensive use in many industries and households. The standard reference method for AS analysis is to determine a methylene blue active substance (MBAS) complex formed between AS and the methylene blue (MB) cation by using chloroform. However, chloroform has a low AS extraction efficiency and other limiting properties, such as a high density and volatility, which make the conventional AS analytic

APA, Harvard, Vancouver, ISO, and other styles

16

Di Marino, Davide, Vadim Aniko, Antonio Stocco, Stefanie Kriescher, and Matthias Wessling. "Emulsion electro-oxidation of kraft lignin." Green Chemistry 19, no. 20 (2017): 4778–84. http://dx.doi.org/10.1039/c7gc02115a.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Shu, Feifei, Shaoai Xie, and Jinping Jia. "Determination of lead(II) by online novel electrolyte dropping electrode using 1,10-phenanthroline in flow injection system." Collection of Czechoslovak Chemical Communications 76, no. 2 (2011): 115–29. http://dx.doi.org/10.1135/cccc2010088.

Full text

Abstract:

The transfer of Pb(II) facilitated by 1,10-phenanthroline (phen) presented in the methyl isobutyl ketone (MIBK) across the polarized water|MIBK interface was systematically investigated by novel electrolyte dropping electrode using cyclic voltammetry and square wave voltammetry. The protonation of 1,10-phenanthroline in polarized water|MIBK interface was explored. The dependence of the half-wave potential on PbCl2 and phen concentration was investigated and the stoichiometry of resulting metal ligand complex was formulated. Different concentrations of PbCl2 was determined online and the transf

APA, Harvard, Vancouver, ISO, and other styles

18

Li, Xiao, and Yun Ren Qiu. "Vapor-Liquid Equilibrium for Binary Systems of Methyl Ethyl Ketone and Methyl Isobutyl Ketone." Advanced Materials Research 550-553 (July 2012): 2616–20. http://dx.doi.org/10.4028/www.scientific.net/amr.550-553.2616.

Full text

Abstract:

Atmospheric vapor-liquid equilibrium data of methyl ethyl ketone (MEK) - methyl isobutyl ketone (MIBK) were measured using an improved Rose still and were used to recover the parameters of NRTL and UNIQUAC models. The results show that the simulated results agree well with the experimental data. The mean temperature variation is 0.14 °C and the mean mole fraction variation is 0.0023 using UNIQUAC model while the mean temperature variation is 0.17 °C and the mean mole fraction variation is 0.0025 using NRTL model. Both models can be used to calculate the atmospheric vapor-liquid equilibrium dat

APA, Harvard, Vancouver, ISO, and other styles

19

Shu, Feifei, Shaoai Xie, and Jinping Jia. "Electrochemical determination of cadmium(II) using dithizone assisted ion transfer and eletrolyte dropping electrode." Collection of Czechoslovak Chemical Communications 76, no. 10 (2011): 1177–86. http://dx.doi.org/10.1135/cccc2011066.

Full text

Abstract:

The transfer of Cd(II) assisted by dithizone (DzH2) present in methyl isobutyl ketone (MIBK) at water–MIBK interface was systematically investigated by novel electrolyte dropping electrode (EDE) using cyclic voltammetry (CV) and square wave voltammetry (SWV). The protonation of DzH2 at polarized liquid–liquid interface was studied. The stoichiometry of resulting metal ligand complex was formulated. Transfer peak current was proportional to the bulk concentration of the Cd(II) varied between 1 μM to 0.1 mM and the maximum value of relative standard deviation was about 3.17%. The presented proce

APA, Harvard, Vancouver, ISO, and other styles

20

Bhanot, Lalitha, Anuj Kumar, Diwakar Shende, and Kailas Wasewar. "Extraction of the Food Additive Tartaric Acid Using Octanol, Methyl Isobutyl Ketone, Kerosene, Mustard Oil, And Groundnut Oil." Hungarian Journal of Industry and Chemistry 51, no. 2 (2023): 15–20. http://dx.doi.org/10.33927/hjic-2023-13.

Full text

Abstract:

Tartaric acid (TA) is a dicarboxylic acid found in bananas, grapes, apples, papaya, cherries, pineapple, pears, mangoes, and tamarind. Due to its widespread use in the food, cosmetic and pharmaceutical industries, it is an essential carboxylic acid. Tartaric acid is produced commercially from wine-industry byproducts and is also present in the industry's effluent. Separating tartaric acid from wastewater is challenging. In this research, tartaric acid was separated from the aqueous phase using chemical and organic solvents such as groundnut oil, mustard oil, kerosene, octanol, and methyl isobu

APA, Harvard, Vancouver, ISO, and other styles

21

Jose, Jerin, and Ligy Philip. "Effect of various electrolytes and other wastewater constituents on the degradation of volatile organic compounds in aqueous solution by pulsed power plasma technology." Environmental Science: Water Research & Technology 6, no. 8 (2020): 2209–22. http://dx.doi.org/10.1039/d0ew00388c.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Klamrassamee, Thepparat, Tana Tana, Navadol Laosiripojana, et al. "Effects of an alkali-acid purification process on the characteristics of eucalyptus lignin fractionated from a MIBK-based organosolv process." RSC Advances 6, no. 95 (2016): 92638–47. http://dx.doi.org/10.1039/c6ra20081h.

Full text

Abstract:

In this study, the effects of an alkali-acid purification process on the properties of eucalyptus lignin isolated from a methyl isobutyl ketone (MIBK)/methanol/water-based organosolv fractionation process were evaluated.

APA, Harvard, Vancouver, ISO, and other styles

23

Li, Qing-gang, Kang-gen Zhou, and Qi-xiu Zhang. "MIBK removal from aqueous solution by aeration method." Journal of Central South University of Technology 7, no. 4 (2000): 182–85. http://dx.doi.org/10.1007/s11771-000-0049-1.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Ikatsu, H., T. Nakajima, N. Murayama, and T. Korenaga. "Flow-Injection Analysis for Malondialdehyde in Plasma with the Thiobarbituric Acid Reaction." Clinical Chemistry 38, no. 10 (1992): 2061–65. http://dx.doi.org/10.1093/clinchem/38.10.2061.

Full text

Abstract:

Abstract A simple, precise, and rapid method to measure plasma malondialdehyde (MDA) was developed by use of solvent extraction--flow-injection analysis. The reagent solution, containing thiobarbituric acid (TBA), 5 g/L in 100 mL/L phosphoric acid, and extraction solvent (methylisobutyl ketone, MIBK) were propelled with a double-plunger micropump at a flow rate of 0.3 mL/min, and 20 microL of sample was introduced into the reagent stream. After TBA-MDA reactant was extracted into MIBK, the organic phase was continuously separated by a successive phase-separation system equipped with two phase

APA, Harvard, Vancouver, ISO, and other styles

25

Zuo, Miao, Zheng Li, Yetao Jiang, et al. "Green catalytic conversion of bio-based sugars to 5-chloromethyl furfural in deep eutectic solvent, catalyzed by metal chlorides." RSC Advances 6, no. 32 (2016): 27004–7. http://dx.doi.org/10.1039/c6ra00267f.

Full text

Abstract:

5-Chloromethylfurfural (5-CMF) was effectively prepared from fructose and other carbohydrates in a biphasic reaction system, which was composed of methyl isobutyl ketone (MIBK) and deep eutectic solvent (DES) with catalyst of AlCl<sub>3</sub>·6H<sub>2</sub>O.

APA, Harvard, Vancouver, ISO, and other styles

26

Hwang, J. David, and Wen-Jwu Wang. "Determination of Hexavalent Chromium in Environmental Fly Ash Samples by an Inductively Coupled Plasma-Atomic Emission Spectrometer with Ammonium Ion Complexation." Applied Spectroscopy 48, no. 9 (1994): 1111–17. http://dx.doi.org/10.1366/0003702944029523.

Full text

Abstract:

A method to determine hexavalent chromium in environmental solid waste has been developed by using an ammonium complexation technique in ICP-AES. This method consists of a two-step extraction and the complexation of ammonium ion. An ammonium hydroxide solution was used to extract the chromium(VI) out of the fly ash sample into the solution. Interfering metal ions, such as Pb, Fe, and Zn in the fly ash sample, were effectively removed by extracting them as diethyldithiocarbamate (DDTC) complexes at pH 9.5 into an MIBK (methyl isobutyl ketone) solution. The pH of the aqueous phase of the sample

APA, Harvard, Vancouver, ISO, and other styles

27

Kolhatkar, Vaishnavi, Ashwini Thakre, Diwakar Shende, and Kailas Wasewar. "Experimental Investigation into the Extraction of Nicotinic Acid Using Natural Non-Toxic and Conventional Solvents." Hungarian Journal of Industry and Chemistry 53, no. 1 (2025): 9–15. https://doi.org/10.33927/hjic-2025-02.

Full text

Abstract:

Nicotinic acid and its derivatives are extensively used in the food, pharmaceutical and cosmetic industries. The technique for separating nicotinic acid from fermentation broth has a significant impact on overall production costs. The extraction of nicotinic acid was investigated using various kinds of natural non-toxic and conventional solvents such as sesame oil, rice bran oil, cyclohexane, 1-octanol and methyl isobutyl ketone (MIBK). The results were presented in terms of extraction efficiencies (E%) and distribution coefficients (KD). To determine these two parameters, experiments were con

APA, Harvard, Vancouver, ISO, and other styles

28

Turkowska, Magdalena, Krzysztof Karoń, Andrzej Milewski, and Agata Jakóbik-Kolon. "Solvent-Impregnated Sorbents for Tantalum from Niobium Separation Using a Fixed-Bed Column." Materials 15, no. 4 (2022): 1513. http://dx.doi.org/10.3390/ma15041513.

Full text

Abstract:

Reactor-grade niobium steel is used as a construction material for nuclear reactors. In this case, the presence of tantalum, which is characterized by a 20 times higher active cross section for capturing thermal neutrons than the cross section of niobium (181Ta: 21.3 barn), cannot exceed 100 ppm. Analytical methods for quality and new separation method development control need very pure niobium matrices—niobium compounds with a low tantalum content, which are crucial for preparing matrix reference solutions or certified reference materials (CRMs). Therefore, in this paper, a new, efficient met

APA, Harvard, Vancouver, ISO, and other styles

29

Mehdi Irannajad, Zahra Afzali, and Hossein Kamran Haghighi. "Solvent Extraction of Copper Using TBP, D2EHPA and MIBK." Russian Journal of Non-Ferrous Metals 59, no. 6 (2018): 605–11. http://dx.doi.org/10.3103/s1067821218060068.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Das, J. K., S. K. Dash, S. Acharya, and B. B. Swain. "Dipolar Association in Binary System: MIBK in Carboxylic Acids." Japanese Journal of Applied Physics 35, Part 1, No. 8 (1996): 4531–34. http://dx.doi.org/10.1143/jjap.35.4531.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Toure, Moussa, Guilhem Arrachart, Jean Duhamet, and Stephane Pellet-Rostaing. "Tantalum and Niobium Selective Extraction by Alkyl-Acetophenone." Metals 8, no. 9 (2018): 654. http://dx.doi.org/10.3390/met8090654.

Full text

Abstract:

A study has been carried out on Ta and Nb recovery by a liquid-liquid extraction process using 4-methylacetophenone (4-MAcPh) as the organic phase. The 4-MAcPh was compared to methyl isobutyl ketone (MIBK) with respect to extraction efficiencies (D values) at different concentrations of H2SO4 in the aqueous phase. The results showed a similar extraction of Nb for both solvents. However, for Ta, extraction efficiency is increased by a factor of 1.3 for 4-MAcPh. In addition, the MIBK solubilized completely after 6 mol∙L−1 of H2SO4 against only a loss of 0.14–4% for 4-MAcPh between 6 and 9 mol∙L−

APA, Harvard, Vancouver, ISO, and other styles

32

Di Cosimo, J. I., G. Torres, and C. R. Apesteguı́a. "One-Step MIBK Synthesis: A New Process from 2-Propanol." Journal of Catalysis 208, no. 1 (2002): 114–23. http://dx.doi.org/10.1006/jcat.2002.3551.

Full text

APA, Harvard, Vancouver, ISO, and other styles

33

Rodrigues, Alexandre Carlos Camacho, and José Luiz Fontes Monteiro. "Direct synthesis of MIBK from acetone over Pd/NaX catalysts." Applied Catalysis A: General 362, no. 1-2 (2009): 185–92. http://dx.doi.org/10.1016/j.apcata.2009.04.041.

Full text

APA, Harvard, Vancouver, ISO, and other styles

34

Seo, Sue-Ji, Sae-Mi Shin, Wonsuck Yoon, and Sang-Hoon Byeon. "A Health Risk Assessment of Workers Exposed to Organic Paint Solvents Used in the Korean Shipbuilding Industry." Toxics 12, no. 12 (2024): 903. https://doi.org/10.3390/toxics12120903.

Full text

Abstract:

In the shipbuilding industry, during the painting process, workers are exposed to various substances in paint, including organic solvents that can adversely affect their health. Most workplace exposures to organic solvents involve mixtures of organic compounds. Therefore, in this study, the hazard quotient (HQ) and hazard index (HI) were derived using data from the Workplace Environmental Monitoring Program in Korea for six organic solvents (xylene, n-butanol, ethylbenzene, isobutyl alcohol, toluene, and methylisobutyl ketone [MIBK]) commonly used in the steel shipbuilding industry. The non-ca

APA, Harvard, Vancouver, ISO, and other styles

35

Diguilio, Eliana, Sergio Mayer, and Horacio Falcón. "Deshidratación de fructosa hacia productos de interés industrial empleando el pirocloro ácido antimónico (H3O)2Sb2O6·nH2O." Revista Tecnología y Ciencia, no. 49 (March 15, 2024): 37–46. http://dx.doi.org/10.33414/rtyc.49.37-46.2024.

Full text

Abstract:

El pirocloro (H3O)2Sb2O6·nH2O (H2Sb) fue sintetizado mediante tratamiento de óxido de antimonio (III) (Sb2O3) con peróxido de hidrógeno (H2O2), para ser evaluado en la deshidratación de fructosa a 5-hydroxymethylfurfural (HMF) en un sistema bifásico FA/FO (H2O/ MIBK:2butanol). Las pruebas catalíticas se llevaron a cabo en un reactor de vidrio tubular (15 mL) con rosca de teflón. El reactor se cargó con 1.5 ml de solución concentrada de fructosa (30 % p/p), 3.5 ml de solvente extractor MIBK: 2 butanol (7:3) y 50 mg de catalizador. El objetivo fue estudiar el efecto de factores como tiempo y tem

APA, Harvard, Vancouver, ISO, and other styles

36

Shaswati, Roychowdhury, Thakur R., and K. Tarafder P. "An improved method for the determination of manganese in rocks, minerals, ores, soils, steel, alloys, sea-bed polymetallic nodules and environmental samples including water and effluents." Journal of Indian Chemical Society Vol. 90, Nov 2013 (2013): 1969–74. https://doi.org/10.5281/zenodo.5792395.

Full text

Abstract:

Geo-analytical Chemistry Laboratory, Regional Centre for Exploration and Research, Atomic Minerals Directorate, Department of Atomic Energy, Jamshedpur-831 002, Jharkhand, India E-mail : ptarafder@sify.com A highly useful and reliable extraction spectrophotometric method has been developed for the determination of manganese in a wide variety of samples having complex matrices based upon reaction system of Mn(II)-2,3- dihydroxynaphthalene, an O-O<em>' </em>type of ligand forming an anionic complex with manganese, irrespective of its valence states, which is readily extractable as a·

APA, Harvard, Vancouver, ISO, and other styles

37

RAZVALYAEVA, A. V., A. O. SERGEEV, D. S. KOSYANENKO, et al. "STUDYING OF THE HYDROGENATION OF CARBONYL COMPOUNDS PROCESS IN THE PRESENCE OF NANOSTRUCTURED NICKEL CATALYSTS." IZVESTIA VOLGOGRAD STATE TECHNICAL UNIVERSITY, no. 12(283) (December 2023): 46–50. http://dx.doi.org/10.35211/1990-5297-2023-12-283-46-50.

Full text

Abstract:

The influence of the catalyst preparation method on the process of hydrogenation of carbonyl compounds in the presence of nickel catalysts obtained by the deposition-precipitation method using urea as a precipitant was studied. It has been shown that an increase in the content of nickel and modifiers helps to increase the substrate conversion using the example of the methyl isobutyl ketone (MIBK) hydrogenation reaction.

APA, Harvard, Vancouver, ISO, and other styles

38

Kehoe, Daniel F., Darryl M. Sullivan, and Randall L. Smith. "Determination of Gold in Animal Tissue by Graphite Furnace Atomic Absorption Spectrophotometry." Journal of AOAC INTERNATIONAL 71, no. 6 (1988): 1153–55. http://dx.doi.org/10.1093/jaoac/71.6.1153.

Full text

Abstract:

Abstract Historically, compounds that contain gold have been used to treat conditions such as rheumatoid arthritis in humans. However, understanding of the metabolic fate of gold in biological tissues has been limited by lack of sensitive quantitative methods of analysis. We addressed this problem by developing a graphite furnace atomic absorption (GFAA) spectrophotometric method to measure trace amounts of gold. This method was validated on small samples of beef liver, kidney, and bone. The samples were digested in micro-Kjeldahl flasks with a mixture of sulfuric, perchloric, and nitric acids

APA, Harvard, Vancouver, ISO, and other styles

39

Srinivas, S. S. J., B. Tulasi Koteswari Bai, K. Babu Rao, K. Narendra, and M. Sarath Babu. "Studies of Densities, Viscosities and Ultrasonic Speeds of Binary Mixtures Containing Isopropyl Alcohol and Ketones at Different Temperatures." International Letters of Chemistry, Physics and Astronomy 15 (September 2013): 151–58. http://dx.doi.org/10.18052/www.scipress.com/ilcpa.15.151.

Full text

Abstract:

The densities, viscosities and ultrasonic velocities of binary liquid mixtures of Isopropyl alcohol with acetophenone and methyl isobutyl ketone (MIBK) have been measured at temperatures 298.15 and 308.15 K over the entire range of mole fraction. From these data, acoustical parameters such as adiabatic compressibility (β), free volume (Vf) and free length (Lf) have been estimated using the standard relations. The results are interpreted in terms of molecular interactions present in the mixtures.

APA, Harvard, Vancouver, ISO, and other styles

40

Srinivas, S. S. J., B. Tulasi Koteswari Bai, K. Babu Rao, K. Narendra, and M. Sarath Babu. "Studies of Densities, Viscosities and Ultrasonic Speeds of Binary Mixtures Containing Isopropyl Alcohol and Ketones at Different Temperatures." International Letters of Chemistry, Physics and Astronomy 15 (June 29, 2013): 151–58. http://dx.doi.org/10.56431/p-l9y27o.

Full text

Abstract:

The densities, viscosities and ultrasonic velocities of binary liquid mixtures of Isopropyl alcohol with acetophenone and methyl isobutyl ketone (MIBK) have been measured at temperatures 298.15 and 308.15 K over the entire range of mole fraction. From these data, acoustical parameters such as adiabatic compressibility (β), free volume (Vf) and free length (Lf) have been estimated using the standard relations. The results are interpreted in terms of molecular interactions present in the mixtures.

APA, Harvard, Vancouver, ISO, and other styles

41

Khongchamnan, Punjarat, Nopparat Suriyachai, Torpong Kreetachat, and Saksit Imman. "Characterization of Eucalyptus Lignin Fractionation from a MIBK-Based Solvothermal Process." Trends in Sciences 19, no. 5 (2022): 2894. http://dx.doi.org/10.48048/tis.2022.2894.

Full text

Abstract:

In this study, the effects of sulfuric acid on cellulose yield, lignin removal, and lignin recovery in solvothermal fractionation of eucalyptus (EC) were studied. An acid concentration of 0.04 M sulfuric acid (H2SO4), temperature of 180 °C and residence time of 30 min resulted in maximum lignin removal from the solid phase, at 87.7 %. Lignin recovery in the organic phase under optimum conditions was 84.6 %. It should be noted that H2SO4 was the best catalyst in the optimal solvothermal process, and it increased the cellulose yield to 95.2 % in the solid phase. Additionally, the physicochemical

APA, Harvard, Vancouver, ISO, and other styles

42

Yang, Xiuli, Xiaohui Wang, Chang Wei, Shili Zheng, Qing Sun, and Dong Wang. "Extraction kinetics of tantalum by MIBK from pulp using Lewis cell." Hydrometallurgy 131-132 (January 2013): 34–39. http://dx.doi.org/10.1016/j.hydromet.2012.10.008.

Full text

APA, Harvard, Vancouver, ISO, and other styles

43

Iregren, A., M. Tesarz, and E. Wigaeushjelm. "Human Experimental MIBK Exposure: Effects on Heart Rate, Performance, and Symptoms." Environmental Research 63, no. 1 (1993): 101–8. http://dx.doi.org/10.1006/enrs.1993.1132.

Full text

APA, Harvard, Vancouver, ISO, and other styles

44

Zhang, Qilin, Haichao Li, Zongwei Guo, and Feng Xu. "High Purity and Low Molecular Weight Lignin Nano-Particles Extracted from Acid-Assisted MIBK Pretreatment." Polymers 12, no. 2 (2020): 378. http://dx.doi.org/10.3390/polym12020378.

Full text

Abstract:

A simple and economical biorefinery method, organosolv methyl isobutyl ketone (MIBK) pretreatment assisted by Lewis acid ferric trichloride hydrolysis, was proposed for fractionating the lignin from extractive-free Eucalyptus powder at the nanoscale, accompanied by another product furfural, derived from hemicellulose. Under the conditions (180 °C, 1 h) optimized based on the best yield of furfural, 40.13% of the acid-insoluble lignin (AIL) could be obtained with a high purity of 100%, a low molecular weight of 767 (Mn) and improved thermostability. The extracted lignin was characterized by its

APA, Harvard, Vancouver, ISO, and other styles

45

Lee, Joo-Yeon, Trieu-Vuong Dinh, Dong-June Kim, et al. "Comparison of Water Pretreatment Devices for the Measurement of Polar Odorous Compounds." Applied Sciences 9, no. 19 (2019): 4045. http://dx.doi.org/10.3390/app9194045.

Full text

Abstract:

A major problem of measuring polar compounds in the air is water vapor. Therefore, it is important to use a water pretreatment device prior to sampling and analysis. However, many studies have reported the occurrence of many problems following the application of an existing water pretreatment device. Accordingly, the performance of a Desolvator-K that was developed by the authors and two commercial coolers were investigated and compared in this study. Water vapor removal efficiency, recovery rate, and reproducibility of polar odorous compounds (i.e., methyl ethyl ketone (MEK), isobutyl alcohol

APA, Harvard, Vancouver, ISO, and other styles

46

Arifin, Bustanul. "ANALISIS KANDUNGAN LOGAM Cd, Cu, Cr DAN Pb DALAM AIR LAUT DI SEKITAR PERAIRAN BUNGUS TELUK KABUNG KOTA PADANG." Jurnal Dampak 9, no. 2 (2012): 116. http://dx.doi.org/10.25077/dampak.9.2.116-122.2012.

Full text

Abstract:

ABSTRAKPenelitian mengenai analisis kandungan logam Cd, Cu, Cr dan Pb dalam air laut telah dilakukan di sekitar perairan Bungus, Teluk Kabung, Kota Padang dengan menggunakan metode ekstraksi pelarut. Hasil penelitian ini bertujuan untuk mengetahui kandungan logam, Cu, Cr dan Pb dan sebarannya di perairan Bungus. Sampel sebanyak 200 mL diekstraksi dengan larutan pengompleks ammonium pyrolidin ditiokarbamat (APDC) jenuh sebanyak 2 mL dalam 7 mL metil isobutyl keton (MIBK) dan diekstrak kembali dengan 5 mL larutan HNO3 4M, larutan diukur absorbannya dengan Spektrofotometer Serapan Atom (SSA). Pen

APA, Harvard, Vancouver, ISO, and other styles

47

Wasewar, Kailas L., and Diwakar Z. Shende. "Equilibrium Study for Reactive Extraction of Caproic Acid in Mibk and Xylene." Engineering 03, no. 08 (2011): 829–35. http://dx.doi.org/10.4236/eng.2011.38101.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

Mohammad, Sultan, Christoph Held, Emrah Altuntepe, Tülay Köse, and Gabriele Sadowski. "Influence of Salts on the Partitioning of 5-Hydroxymethylfurfural in Water/MIBK." Journal of Physical Chemistry B 120, no. 16 (2016): 3797–808. http://dx.doi.org/10.1021/acs.jpcb.5b11588.

Full text

APA, Harvard, Vancouver, ISO, and other styles

49

YANG, Xiuli, Xiaohui WANG, Chang WEI, Shili ZHENG, and Yi ZHANG. "Low-Acid Extraction of Tantalum from a Tantalum-Niobium Pulp by MIBK." Solvent Extraction Research and Development, Japan 20 (2013): 159–68. http://dx.doi.org/10.15261/serdj.20.159.

Full text

APA, Harvard, Vancouver, ISO, and other styles

50

Farré, Rosaura, M. Jesús Lagarda, and Rosa Montoro. "Atomic Absorption Spectrophotometnc Determination of Chromium in Foods." Journal of AOAC INTERNATIONAL 69, no. 5 (1986): 876–79. http://dx.doi.org/10.1093/jaoac/69.5.876.

Full text

Abstract:

Abstract A method is reported for determination of chromium in foodstuffs. Organic matter is digested with nitric acid, followed by oxidation to Cr(VI) and extraction with methyl isobutyl ketone (MIBK) after HC1 addition. Chromium determinations are performed by flame absorption spectroscopy. Absence of interferences is verified and recovery tests are performed on food samples. Quantitation limit (3.8 ng/mL), accuracy (NBS Standard Reference Material 1573 Tomato Leaves, 4500 ± 500 ng/g, found 3860 ± 409 ng/g), and precision (CV for vegetable matrix = 9.05%, CV for animal matrix = 14.95%) of th

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!