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Journal articles on the topic 'Dioxide hydroxide'

Author: Grafiati

Published: 30 May 2022

Last updated: 31 July 2025

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1

Khan, Muhammad Saad, Cornelius Borecho Bavoh, Khor Siak Foo, et al. "Kinetic Behavior of Quaternary Ammonium Hydroxides in Mixed Methane and Carbon Dioxide Hydrates." Molecules 26, no. 2 (2021): 275. http://dx.doi.org/10.3390/molecules26020275.

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This study evaluates the kinetic hydrate inhibition (KHI) performance of four quaternary ammonium hydroxides (QAH) on mixed CH4 + CO2 hydrate systems. The studied QAHs are; tetraethylammonium hydroxide (TEAOH), tetrabutylammonium hydroxide (TBAOH), tetramethylammonium hydroxide (TMAOH), and tetrapropylammonium hydroxide (TPrAOH). The test was performed in a high-pressure hydrate reactor at temperatures of 274.0 K and 277.0 K, and a concentration of 1 wt.% using the isochoric cooling method. The kinetics results suggest that all the QAHs potentially delayed mixed CH4 + CO2 hydrates formation du

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2

Khan, Muhammad Saad, Cornelius Borecho Bavoh, Khor Siak Foo, et al. "Kinetic Behavior of Quaternary Ammonium Hydroxides in Mixed Methane and Carbon Dioxide Hydrates." Molecules 26, no. 2 (2021): 275. http://dx.doi.org/10.3390/molecules26020275.

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This study evaluates the kinetic hydrate inhibition (KHI) performance of four quaternary ammonium hydroxides (QAH) on mixed CH4 + CO2 hydrate systems. The studied QAHs are; tetraethylammonium hydroxide (TEAOH), tetrabutylammonium hydroxide (TBAOH), tetramethylammonium hydroxide (TMAOH), and tetrapropylammonium hydroxide (TPrAOH). The test was performed in a high-pressure hydrate reactor at temperatures of 274.0 K and 277.0 K, and a concentration of 1 wt.% using the isochoric cooling method. The kinetics results suggest that all the QAHs potentially delayed mixed CH4 + CO2 hydrates formation du

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3

To, Trang Quynh, Ceire Kenny, Soshan Cheong, and Leigh Aldous. "Carbon dioxide as a pH-switch anti-solvent for biomass fractionation and pre-treatment with aqueous hydroxide solutions." Green Chemistry 19, no. 9 (2017): 2129–34. http://dx.doi.org/10.1039/c7gc00574a.

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4

King, James Frederick, John Henry Hillhouse, and Kishan Chand Khemani. "Organic sulfur mechanisms. 27. A reexamination of the reaction of thiirane 1,1-dioxide with aqueous hydroxide." Canadian Journal of Chemistry 63, no. 1 (1985): 1–5. http://dx.doi.org/10.1139/v85-001.

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Reaction of thiirane 1,1-dioxide (1) with aqueous barium hydroxide gives chiefly barium ethanesulfonate (3) together with some ethylene and barium sulfite, and only a small amount (<5%) of barium 2-hydroxyethanesulfinate (2), the material previously described by Hesse etal. as the major product of this reaction. Reaction of 1 with potassium hydroxide proceeds analogously except for the formation of barium 2-sulfinatoethanesulfonate (6) from reaction of potassium sulfite with unreacted 1. This revision, when taken with what is already known of the final step of the Ramberg–Bäcklund reaction,

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5

Bykovsky, Nikolay Alekseevich, Lyudmila N. Puchkova, Vadim S. Fanakov, and Nadezhda F. Fanakova. "Effluents in Manufacturing of the Titanium Products and their Processing in a Membrane Cell with Monopolar and Bipolar Membranes." Key Engineering Materials 769 (April 2018): 181–86. http://dx.doi.org/10.4028/www.scientific.net/kem.769.181.

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The article presents results of researches on treatment of spent acid etching solution (SAES) formed during etching of titanium products by hydrochloric acid. The process includes neutralization of SAES with alkali, filtering, drying and calcinations of titanium hydroxide precipitate and electrochemical processing of the filtrate containing sodium chloride in a cell with ion exchange membranes. During electrolysis, sodium hydroxide and hydrochloric acid are produced. The proposed process scheme of SAES treatment allows to obtain titanium dioxide, sodium hydroxide and acid. Titanium dioxide can

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6

Guzman, J. R., J. M. Jocson, S. C. Lee, J. A. Mirador, P. A. Saludo, and R. B. Manrique. "Analysis of carbon dioxide chemical looping absorption system from flue gas emissions of internal combustion engines." IOP Conference Series: Earth and Environmental Science 1500, no. 1 (2025): 012032. https://doi.org/10.1088/1755-1315/1500/1/012032.

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Abstract Transportation sector remains to be one of the major contributors to the consistent increase of global carbon dioxide emissions. The study demonstrates a novel amine based solvent Carbon capture Chemical Looping Absorption (CCLA) system tested to flue gas emissions of petrol and diesel internal combustion engines (ICE). Chemical absorption offers a promising solution for efficient carbon dioxide capture. Soda lime chemical compound was utilized in the study which is composed mainly of calcium hydroxide, water, sodium hydroxide and small amount of potassium hydroxide. The said compound

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7

Mei, Zhen Hua, and Shu Yu Mei. "Novel Economical Chemical Engineering Reactions for Mineralization of CO₂ to Combat Global Warming." Advanced Materials Research 524-527 (May 2012): 3302–7. http://dx.doi.org/10.4028/www.scientific.net/amr.524-527.3302.

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Utilizing albite as material source, a novel chemical engineering project was proposed to solidify CO2. With potassium hydroxide as the flux, albite was decomposed at temperature of ~320°C after a series of chemical engineering processes. Carbon dioxide was absorbed in sodium hydroxide. The mineralization of carbon dioxide shows the evident safety in a long geological timescales compared with storages of CO2 in deep oceans or deep underground. Moreover, it can provide an advantage in that it would take even no net cost at all.

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8

Kutovyi, Volodymyr, Dmitry Malykhin, Volodymyr Virych, and Ruslan Vasilenko. "Thermal-Vacuum Method for Obtaining Nanodispersed Zirconium Dioxide." 4, no. 4 (December 10, 2021): 86–90. http://dx.doi.org/10.26565/2312-4334-2021-4-09.

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An energy-efficient thermal-vacuum method for continuous production of nanodispersed powder of amorphous zirconium dioxide from zirconium hydroxide has been developed. This approach is based on a principle of creating an aerodynamic flow with an initial powder-like material in the cavity of the heating element of a thermal-vacuum installation. In this way, short-term contacts of particles of zirconium hydroxide with the inner surface of the heating element made in the form of the winding helical are created. As a result, the crushing of the particles is carried out due to the high thermal stre

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9

Erdös, Emerich, and Karel Mocek. "Equilibria of Reactions Between Nitrogen Oxides and Calcium Hydroxide." Collection of Czechoslovak Chemical Communications 60, no. 5 (1995): 751–62. http://dx.doi.org/10.1135/cccc19950751.

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A general analysis of chemical equilibria in a system consisting of the gaseous nitrogen monoxide, nitrogen dioxide, water vapor, carbon dioxide, oxygen, and the solid calcium hydroxide is carried out with respect to the equilibrium partial pressures of nitrogen oxides. The conditions are defined, under which the calcium hydroxide is transformed to the calcium carbonate. The corresponding equilibrium equations are derived for all nine regions of existence of described system. The results are illustrated graphically and discussed from the point of removing the nitrogen oxides from waste gases.

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10

Leaist, Derek G. "Moments analysis of restricted ternary diffusion: sodium sulfite + sodium hydroxide + water." Canadian Journal of Chemistry 63, no. 11 (1985): 2933–39. http://dx.doi.org/10.1139/v85-486.

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Ternary diffusion coefficients can be determined from restricted-diffusion experiments by evaluating zeroth and first time moments of the difference in a concentration-dependent property measured at two levels along the diffusion column. The method is used to determine ternary diffusion coefficients for aqueous sodium sulfite + sodium hydroxide solutions from conductance measurements. It is shown that these data can be analyzed to obtain the ternary diffusivity of sulfur dioxide in strongly alkaline solutions where sulfite is the major transporting species for the sulfur dioxide component. At

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11

Harris, Coleman R., Jennifer R. Soliz, Andrew D. Klevitch, et al. "Sensing of NO2 with zirconium hydroxide via frequency-dependent electrical impedance spectroscopy." Dalton Transactions 46, no. 33 (2017): 10791–97. http://dx.doi.org/10.1039/c7dt02034a.

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12

Zang, Jian, and Chong Hang Ye. "Application of Ultrasonic Treatment on the Stripping of Cellulose Sponge." Advanced Materials Research 926-930 (May 2014): 316–19. http://dx.doi.org/10.4028/www.scientific.net/amr.926-930.316.

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Cellulose sponge has the characteristic of porous and spongy. It’s difficult to strip in conventional processing. This paper describes a process using ultrasonic aided in solution of thiourea dioxide and sodium hydroxide. The cellulose sponge can be faster and better handled in this process. It will have a better stripping effect. And the optimization parameter of ultrasonic process is described for: thiourea dioxide 30 g/l, sodium hydroxide 40 g/l, the time of 10 min, the temperature of 70 °C. Under the condition of this operation, cellulose sponge stripping rate was 98.8%, the breaking stren

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13

Ismail, W. M. I. W., N. S. W. Zulkefeli, and M. N. Masri. "A Sight of Zinc Corrosion in Various Alkaline Media." Journal of Tropical Resources and Sustainable Science (JTRSS) 4, no. 2 (2021): 95–97. http://dx.doi.org/10.47253/jtrss.v4i2.614.

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This review concentrates on corrosion properties that expose to zinc by various alkaline media. The assumption has been advanced that zinc corrodes electrochemically in the first stage of exposition, but the chemical corrosion prevails after a longer time. Different types of electrolyte had been tested on zinc such as sodium chloride, sodium hydroxide and potassium hydroxide. Each of alkaline media can produced corrosion product such as zinc hydroxide chloride, zinc hydroxide carbonate, zinc oxide, and zinc hydroxide. The production of corrosion products is depending on the carbon dioxide cont

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14

Krishnan, V., B. V. Jay Dhwarak, N. Nithyanandan, and I. Paul Theophilus Rajakumar. "Activated Carbon, Lithium Hydroxide, Calcium Hydroxide Scrubber for Carbon-Di-Oxide Capture from Exhausts of Vehicles." Applied Mechanics and Materials 812 (November 2015): 64–69. http://dx.doi.org/10.4028/www.scientific.net/amm.812.64.

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Vehicular pollution is one of the main reasons for air pollution in many cities. According to Industrial Environment Carbon, every gallon of gasoline produces 14% total volume of carbon dioxide, this will ultimately lead to air pollution and global warming [10]. To minimize the emission level, physical adsorption [4] can be used for the removal of organic molecule from exhaust gas stream by impulse collision. So our proposed system consists of a filter matrix bed, made of activated carbon, calcium hydroxide, lithium hydroxide [8,9]. Activated carbon is the most widely used adsorbent. It can ad

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15

Versichelen, Linda F. M., Marie-Paule L. A. Bouche, Georges Rolly, et al. "Only Carbon Dioxide Absorbents Free of Both NaOH and KOH Do Not Generate Compound A during In Vitro Closed-system Sevoflurane." Anesthesiology 95, no. 3 (2001): 750–55. http://dx.doi.org/10.1097/00000542-200109000-00030.

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Background Insufficient data exist on the production of compound A during closed-system sevoflurane administration with newer carbon dioxide absorbents. Methods A modified PhysioFlex apparatus (Dräger, Lübeck, Germany) was connected to an artificial test lung (inflow at the top of the bellow approximately/= 160 ml/min CO2; outflow at the Y piece of the lung model approximately/= 200 ml/min, simulating oxygen consumption). Ventilation was set to obtain an end-tidal carbon dioxide partial pressure of approximately 40 mmHg. Various fresh carbon dioxide absorbents were used: Sodasorb (n = 6), Sofn

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16

Kirchgessner, David A., and Jeffrey M. Lorrain. "Lignosulfonate-modified calcium hydroxide for sulfur dioxide control." Industrial & Engineering Chemistry Research 26, no. 11 (1987): 2397–400. http://dx.doi.org/10.1021/ie00071a038.

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17

Rao, Minglu, Anbang Lai, Miaomiao Zan, Menglan Gao, and Yanfei Xiao. "Synthesis of Yttrium Oxide Nanoneedles with Carbon Dioxide Carbonization." Nanomaterials 12, no. 19 (2022): 3440. http://dx.doi.org/10.3390/nano12193440.

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In this study, a CO2 carbonization method is introduced for the preparation of 1D yttrium oxide powders. Using YCl3 as the raw material, sodium hydroxide was initially used to completely precipitate Y3+ into yttrium hydroxide, and then CO2 was introduced into the yttrium hydroxide slurry for homogenization-like carbonization to obtain yttrium carbonate precipitation. Then, by studying the effects of carbonization conditions, such as the temperature, CO2 flow rate, and stirring speed, on the morphology and phases of yttrium carbonate, the temperature was observed to exert a greater effect than

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18

Dent, BR, and GJ Gainsford. "The Reaction of Thiophene 1,1-Dioxide With Haloform-Sodium Hydroxide Under Phase-Transfer Catalysis." Australian Journal of Chemistry 42, no. 8 (1989): 1307. http://dx.doi.org/10.1071/ch9891307.

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3,4-Dibromotetrahydrothiophen 1,1-dioxide (2) reacts in the reagent system chloroformaqueous sodium hydroxide-benzyltriethylammonium chloride to give 3-dichloromethylene-2,3-dihydrothiophen 1,1-dioxide (6a), for which low-temperature X-ray structural data are presented. Bromoform may be substituted for chloroform to give the corresponding dibromomethylene compound (6b) in good yield.

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19

Zhu, Miaomiao, Ruoxin Zhai, Mingming Zhu, and Jiabei He. "Evaluating Alkali Activation in Magnesium Slag Carbonization and Its Mechanism." Crystals 14, no. 10 (2024): 847. http://dx.doi.org/10.3390/cryst14100847.

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In recent years, magnesium slag has been used as a raw material for solid waste treatment using the carbonization method and has proven to be promising in reducing carbon emissions. In this study, the alkali activation reaction was introduced to promote the carbonization of magnesium slag. The resulting mechanical properties, microstructural attributes, and carbonization mechanism were studied by varying the sodium hydroxide content, temperature, and carbon dioxide concentration during the reaction process. The results showed that the amounts of calcium hydroxide, C-S-H, and calcium carbonate

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20

Gao, Shi-Hui, and Chong-Wen Yu. "Effects of supercritical carbon dioxide on morphology of apocynum venetum fibers." Thermal Science 19, no. 4 (2015): 1279–82. http://dx.doi.org/10.2298/tsci1504279g.

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This paper investigated the structures and compositions of apocynum venetum fibers treated with pectinase and mixture of sodium hydroxide and hydrogen peroxide in supercritical carbon dioxide fluid. The apocynum venetum fibers were analyzed by Fourier transform infrared spectrometry, X-ray diffraction, and scanning electron microscopy. Fourier transform infrared analysis indicated that pectinase could remove the pectin and hemicellulose and the mixture of sodium hydroxide and hydrogen peroxide could extract the lignin in supercritical carbon dioxide. Meanwhile, the results of X-ray diffraction

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21

K., Dölle, and Van Bargen M. "Phosphor Removal from Waste Water Using Hydrodynamic Cavitation." Journal of Scientific Research & Reports 14, no. 2 (2017): 1–11. https://doi.org/10.9734/JSRR/2017/33285.

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Hydrodynamic cavitation principle was applied to phosphate containing water and waste water. A 20% Calcium hydroxide slurry was applied before hydrodynamic cavitation to precipitate calcium phosphate by reacting calcium hydroxide and phosphate in water. A 70% reduction of phosphate in waste water is observed compared to controls runs using orifice plate and jet nozzle designs to produce cavitation. The jet nozzle design showed best results of for phosphate reduction in waste water. After cavitation calcium hydroxide, rich treated waste water was settled and then naturalized with carbon dioxide

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22

Pookmanee, Pusit, Hathaithip Ninsonti, Supaporn Sangsrichan, Wiyong Kangwansupamonkon, and Sukon Phanichphant. "Photocatalytic Degradation of Geosmin by Titanium Dioxide Powder Synthesized by the Hydrothermal Route." Advanced Materials Research 93-94 (January 2010): 161–64. http://dx.doi.org/10.4028/www.scientific.net/amr.93-94.161.

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Titanium dioxide powder was synthesized by the hydrothermal route with the starting precursors as titanium isopropoxide, ammonium hydroxide and nitric acid. The final of pH value of mixed solution was 1 and treated in the hydrothermal PTFE vessel at 80-100 °C for 3h. The phase of titanium dioxide was characterized by X-ray diffractometer (XRD). The morphology of titanium dioxide was investigated by scanning electron microscope (SEM). The chemical composition of titanium dioxide was examined by energy dispersive X-ray spectrophotometer (EDXS). The photocatalytic degradation of geosmin by titani

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23

Zhu, Huimin, Qi Liu, Zhanshuang Li, et al. "Synthesis of exfoliated titanium dioxide nanosheets/nickel–aluminum layered double hydroxide as a novel electrode for supercapacitors." RSC Advances 5, no. 61 (2015): 49204–10. http://dx.doi.org/10.1039/c5ra07703f.

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24

Rashmi, Sharma, Acharya Shveta, and Kumar Sharma Arun. "Application of FGD process (flue gas desulphurization) to control S02 emission at Shree Cement Ltd., Beawar, Rajasthan, India." Journal of Indian Chemical Society Vol. 87, Aug 2010 (2010): 941–46. https://doi.org/10.5281/zenodo.5801021.

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Department of Chemistry, S.D. Govt. College, Beawar-305 901, Rajasthan, India <em>E-mail:</em> sbarmaarunkumar@shreecementltd.com <em>Manuscript received 29 October 2009, revised 1 February 2010, accepted 26 February 2010</em> Laboratory studies were conducted to compare the efficiency by varying the concentration or sodium hydroxide, calcium hydroxide and sludge (waste product or water treatment plant containing CaO) in absorption or SO<sub>2</sub> contained in flue gases which is emitted from thermal power plant or Shree Cement Ltd., Beawar, Rajasthan. All or three situations&

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25

Abazović, Nadica D., Amelia Montone, Luciana Mirenghi, Ivana A. Janković, and Mirjana I. Čomor. "TiO2 Doped with Nitrogen: Synthesis and Characterization." Journal of Nanoscience and Nanotechnology 8, no. 2 (2008): 613–18. http://dx.doi.org/10.1166/jnn.2008.a226.

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In this study, nitrogen-doped titanium dioxide (TiO2) powders were synthesized in two ways: by heating of titanium hydroxide with urea and by direct hydrolysis of titanium tetraisopropoxide (TTIP) with ammonium hydroxide. The samples were characterized by structural (XRD), analytical (XPS), optical (UV/Vis absorption/reflection and Raman spectroscopy) and morphological (SEM, TEM) techniques. The characterization suggested that the doped materials have anatase crystalline form without any detectable peaks that correspond to dopants. The absorption threshold of titanium dioxide was moved in the

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26

Ning, Zhi Qiang, Yu Chun Zhai, and Hua Mei Duan. "The Preparation of High Purity Silicon Dioxide from Boron Mud - The Solid Wastes of Boromagnesite for Producing Borax by Alkali or Soda." Advanced Materials Research 233-235 (May 2011): 1296–300. http://dx.doi.org/10.4028/www.scientific.net/amr.233-235.1296.

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The residual rich SiO2 slag was obtained for magnesium was leached from the boron mud by sulfuric acid. The SiO2 was leached from the residual slag by sodium hydroxide solution. The effect of the leaching temperature and the leaching time, the ratio of the sodium hydroxide solution to slag and the concentration of the sodium hydroxide solution on the leaching efficiency of SiO2 in the residual slag were also studied. The reasonable technical condition as follow : the leaching temperature is 130°C, the leaching time is 6 min, the concentration of the sodium hydroxide solution is 19mol·L-1, the

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27

., Sharabanna, S. M. Asif, Suman S, and M. Pawan. "Pollutant Detector and Absorber." International Journal for Research in Applied Science and Engineering Technology 11, no. 4 (2023): 561–70. http://dx.doi.org/10.22214/ijraset.2023.50137.

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Abstract: Air pollution occurs when harmful substances are released into the earth's atmosphere. It can also harm other living organisms, such as animals and food crops, and damage the natural or built environment. Both human activities and natural processes can cause air pollution. Both biological and chemical methods are used to remove pollutants from the air. Algae and sodium hydroxide (NaOH) are used to reduce carbon dioxide (CO2), nitrogen dioxide (NO2) and sulphur dioxide (SO2) in the polluted air and produce oxygen. The equipment consists of a culture fluid containing algae and NaOH sol

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28

Ho, Chun Sung, and Shin Min Shih. "Calcium hydroxide/fly ash sorbents for sulfur dioxide removal." Industrial & Engineering Chemistry Research 31, no. 4 (1992): 1130–35. http://dx.doi.org/10.1021/ie00004a023.

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29

Yoo, Miran, Sang-Jun Han, and Jung-Ho Wee. "Carbon dioxide capture capacity of sodium hydroxide aqueous solution." Journal of Environmental Management 114 (January 2013): 512–19. http://dx.doi.org/10.1016/j.jenvman.2012.10.061.

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30

Nugroho, Aldi, Yoga Bekti Susanto, Villia Lidzati Kamilah, and Regita Prameswari. "Carbon Dioxide (CO2) Absorption Process Using Sodium Hydroxide (NaOH)." IPTEK The Journal of Engineering 9, no. 1 (2023): 30. http://dx.doi.org/10.12962/j23378557.v9i1.a15192.

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31

Nakashima, Kouichi, Ichiro Fujii, and Satoshi Wada. "Preparation of BaZrO₃ Nanocrystals at Low Temperature." Key Engineering Materials 582 (September 2013): 165–68. http://dx.doi.org/10.4028/www.scientific.net/kem.582.165.

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Barium zirconate (BaZrO3) was prepared by the composite-hydroxide-mediated (CHM) approach at low temperature. The CHM method is based on chemical reactions of materials in the eutectic hydroxide melt. In this method, the eutectic point at an sodium hydroxide (NaOH) : potassium hydroxide (KOH) molar ratio of 51.5 : 48.5 is about 165°C. In the present work, the low-temperature preparation and morphology of BaZrO3 nanocrystals were investigated. Zirconium tetra-n-butoxide ((CH3CH2CH2CH2O)4Zr) and/or zirconium dioxide (ZrO2) were used as a zirconium source. X-ray diffraction measurements confirmed

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32

Briden, Frank E., and David F. Natschke. "The Characterization of a Solid Sorbent with Crystallite Size and Strain Data From X-Ray Diffraction Line Broadening." Advances in X-ray Analysis 32 (1988): 437–41. http://dx.doi.org/10.1154/s0376030800020759.

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EPA's Air and Energy Engineering Research Laboratory is currently investigating the injection of dry calcium hydroxide [Ca(OH)2] into coal fired electric power plant burners for Che control of sulfur dioxide (S02) emissions.

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Nelli, Christopher H., and Gary T. Rochelle. "Simultaneous Sulfur Dioxide and Nitrogen Dioxide Removal by Calcium Hydroxide and Calcium Silicate Solids." Journal of the Air & Waste Management Association 48, no. 9 (1998): 819–28. http://dx.doi.org/10.1080/10473289.1998.10463728.

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34

Mchaourab, Ali, Shahbaz R. Arain, and Thomas J. Ebert. "Lack of Degradation of Sevoflurane by a New Carbon Dioxide Absorbent in Humans." Anesthesiology 94, no. 6 (2001): 1007–9. http://dx.doi.org/10.1097/00000542-200106000-00014.

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Background Potent inhaled anesthetics degrade in the presence of the strong bases (sodium hydroxide or potassium hydroxide) in carbon dioxide (CO2) absorbents. A new absorbent, Amsorb (Armstrong Medical Ltd., Coleraine, Northern Ireland), does not employ these strong bases. This study compared the scavenging efficacy and compound A production of two commercially available absorbents (soda lime and barium hydroxide lime) with Amsorb in humans undergoing general anesthesia. Methods Four healthy volunteers were anesthetized on different days with desflurane, sevoflurane, enflurane, and isoflurane

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35

Shi, Liubin, Mingde Tang, Yaseen Muhammad, et al. "Controlled preparation of micro–nano hierarchical hollow calcium carbonate microspheres by pressurized-CO2 carbonization and their CaCO3:Eu3+ photoluminescence properties." CrystEngComm 23, no. 16 (2021): 3033–42. http://dx.doi.org/10.1039/d0ce01854f.

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Herein, calcium carbonate hollow microspheres with a micro–nano hierarchical structure were successfully synthesized using disodium salt of ethylenediaminetetraacetic acid (EDTA-2Na) as an additive, by bubbling pressurized carbon dioxide and calcium hydroxide at 120 °C.

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36

Meng, Hua. "Deep desulfurization of sintering flue gas in iron and steel works based on low-temperature oxidation." Open Chemistry 18, no. 1 (2020): 1370–80. http://dx.doi.org/10.1515/chem-2020-0169.

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AbstractThe deep desulfurization method of sintering flue gas based on the low-temperature oxidation method is studied. Based on the analysis of the main principle of deep desulfurization of sintering flue gas, a deep desulfurization system of sintering flue gas is constructed, which is composed of an absorption washing unit and a washing solution treatment unit. Sodium hydroxide solution is used as the desulfurizing absorbent to mix with the sintering flue gas entering the reaction tower. Sulfur dioxide in the sintering flue gas reacts with sodium hydroxide to generate sodium sulfite, and sod

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37

Starostin, Mihail, Nikita Dolbnev, and Konstantin Ovchinnikov. "Quantum chemical study of the acidity of 3,4-dihydro-2H-thiopyran-1,1-dioxides." From Chemistry Towards Technology Step-By-Step 4, no. 3 (2023): 90–94. http://dx.doi.org/10.52957/2782-1900-2024-4-3-90-94.

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We conducted quantum chemical modelling by REVPBE0 3,4-dihydro-2H-thiopyran-1,1-dioxide,3,4,6-triphenyl-3,4-dihydro-2H-thiopyran-1,1-dioxide and their anions. The authors calculated the Gibbs free energies for the reaction of their interaction with hydroxide anion as a base. We have found a difference in the acidic properties of the protons of the 2H-thiopyran rings and the positions of the reaction centres in the subsequent reactions involving the formed anions.

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38

Guo, Zunmin, Feng Li, Yurou Celine Xiao, et al. "Efficient Amino-Acid-Based Reactive Capture via Catalyst and System Designs." ECS Meeting Abstracts MA2025-01, no. 41 (2025): 2248. https://doi.org/10.1149/ma2025-01412248mtgabs.

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The electrochemical production of CO from carbon dioxide (CO2) has typically relied on gas-phase CO2 electrolysis, which involves energy- and capital- intensive upstream capture and downstream separation processes. Reactive capture – an integrated approach that combines CO2 capture and conversion – uses CO2 capture fluid directly as feedstock to produce CO, avoiding the need for CO2 purification processes. To date, reactive capture has relied on hydroxide–based capture solutions (e.g. potassium hydroxide), suitable for direct air capture processes. However, in the hydroxide–based systems, two

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Sarddar, Debabrata, Gourab Dutta, and Rajat Pandit. "Novel Approach for Green Cloud Data Center Using IoT Sensor Device." Asian Journal of Computer Science and Technology 8, no. 2 (2019): 9–12. http://dx.doi.org/10.51983/ajcst-2019.8.2.2148.

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Cloud computing provides all the basic level of computing facility to complete the daily needs of a general or public community. In this paper, we concerned about the topic of carbon dioxide and carbon monoxide emission from cloud computing and its environmental effects and how to control it. Due to global warming and greenhouse effect, increasing the temperature of the environment day by day. In this paper, we concerned about how to control the problem of carbon dioxide and carbon monoxide emission from the cloud data center and also try to reduce the reaction cost. We use carbon dioxide and

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Do Dinh, Trung, Tue Nguyen Ngoc, and Minh Ngoc Ho. "Manufacture and investigate a few properties of carbon-dioxide-absorbing material." Vietnam Journal of Catalysis and Adsorption 11, no. 2 (2022): 16–20. http://dx.doi.org/10.51316/jca.2022.023.

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Absorbing carbon dioxide by porous solid material is one of the most effective methods aiming to treat, cut down carbon dioxide emission, solving climate change that is occurring globally. The paper presents the result of manufacturing carbon dioxide-absorbing particles based on calcium hydroxide as main material and other components (silica, calcium oxide, lithium chloride, ethyl violet indicator, etc.). Manufactured material has specific surface area of 15.597 m2/g, pH of the extract is 11.98, CO2 absorbing capacity reaches 160 liters/kg, has ability of changing color from white to dark viol

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Kaszewski, Jarosław, Sergiy Yatsunenko, Iwona Pełech, Ewa Mijowska, Urszula Narkiewicz, and Marek Godlewski. "High Pressure Synthesis versus Calcination – Different Approaches to Crystallization of Zirconium Dioxide." Polish Journal of Chemical Technology 16, no. 2 (2014): 99–105. http://dx.doi.org/10.2478/pjct-2014-0038.

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Abstract Calcination and microwave-assisted hydrothermal processing of precipitated zirconium dioxide are compared. Characterization of synthesized products of these two technologies is presented. The infiuence of thermal treatment up to 1200oC on the structural and spectroscopic properties of the so-obtained zirconium dioxide is examined. It was found that initial crystallization of material inhibits the crystal growth up to the 800oC (by means of XRD and TEM techniques), while the material crystallized from amorphous hydroxide precursor at 400oC, exhibits 26 nm sized crystallites already. It

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Li, Menglin, Ling Pang, Meizhu Chen, Jun Xie, and Quantao Liu. "Effects of Aluminum Hydroxide and Layered Double Hydroxide on Asphalt Fire Resistance." Materials 11, no. 10 (2018): 1939. http://dx.doi.org/10.3390/ma11101939.

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When a fire occurs in a tunnel, the instantaneous high temperature and smoke cause great danger to people. Therefore, the asphalt pavement material in the tunnel must have sufficient fire resistance. In this study, the effects of aluminum hydroxide and layered double hydroxide on the fire resistance of styrene-butadiene-styrene (SBS) polymer-modified asphalt was investigated. The fire resistance of the asphalt was evaluated by using a limiting oxygen index (LOI). The impact of aluminum hydroxide (ATH), layered double hydroxide (LDHs), and mixed flame retardant (MFR) on LOI was studied. The syn

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Zheng, Xinyu, Yitian Wang, and Lankun Cai. "Study on CO₂ Immobilization in the Environmentally Sound Treatment of Fly Ash." E3S Web of Conferences 406 (2023): 04014. http://dx.doi.org/10.1051/e3sconf/202340604014.

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To improve the carbonation performance of fly ash, waste incineration fly ash was subjected to high-temperature alkali fusion-hydrothermal and other treatments. The results showed that the material prepared with 8 g of sodium hydroxide, 10 h of maturation, 100 °C and 10 h of hydrothermal temperature had the best ability to isolate carbon dioxide, 521 g/kg, while the fly ash could only adsorb 160 g/kg of carbon dioxide, which improved the isolation ability by 212.5%.

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Zelovich, Tamar, and Mark E. Tuckerman. "(Invited) First-Principles Molecular Dynamics Investigations of Proton and Hydroxide Transport in Model Anion-Exchange- and Proton-Exchange Membranes in Nanoconfined, Low-Hydration Environments." ECS Meeting Abstracts MA2023-01, no. 45 (2023): 2473. http://dx.doi.org/10.1149/ma2023-01452473mtgabs.

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Fuel cell-based anion-exchange membranes (AEMs) and proton exchange membranes (PEMs) have considerable potential as cost-effective, clean energy conversion devices. However, a fundamental atomistic understanding of the hydroxide and hydronium diffusion mechanisms in AEM and PEM environments is an ongoing challenge. In recent years, nano-confined structures have been exploited in the study of cost-effective and reliable polymer architectures for electrochemical devices. In this study, first-principles molecular dynamics simulations are employed to investigate the influence of the water distribu

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Lavrynenko, O. M., O. Yu Pavlenko, M. N. Zahornyi, and S. F. Korichev. "Morphology, phase and chemical composition of the nanostructures formed in the systems containing lanthanum, cerium, and silver." Himia, Fizika ta Tehnologia Poverhni 12, no. 4 (2021): 382–92. http://dx.doi.org/10.15407/hftp12.04.382.

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X-ray phase and thermogravimetric analysis, scanning electron microscopy and energy-dispersion spectroscopy were used to study the products of phase formation during the precipitation of lanthanum and cerium salts in the presence of silver nitrate and recipients of precipitators, nucleating agents and hydrolysis regulators. Thermogravimetric analysis shows the completion of the La(OH)3 lattice dehydroxylation process at a temperature of ~ 300 °С and probable destruction of sulfates at a temperature of ~ 340 °С. The phase interaction of lanthanum oxide(III) with silver ends at T ~ 400 °C. The D

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Amit, Tripathi, Gupta Mayank, and K. Rai P. "Effect of Different Molarity of Alkaline Activator on Fly Ash Based Concrete for Green Construction Materials (Without Cement)." Journal of Advanced Cement & Concrete Technology 2, no. 3 (2019): 1–6. https://doi.org/10.5281/zenodo.3466401.

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Geopolymer concrete is produced due to alkalination of substances rich in aluminium and silicon with an alkali solution, an aqueous solution of sodium hydroxide and sodium silicate. Alkali answer turned into various in special molar attention as eight M, 10 M, 12 M, and 14 M with hydroxide to silicate ratio of 2.5. Two one-of-a-kind set of concrete specimens have been casted which were viz. Fly ash primarily based handiest use in the geopolymer concrete. All the specimens had been cured at 60 °C in oven and elevated curing tank for twenty-four hours and atmospheric curing in lab till 7 day

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Fu, Nengshuo, Shuhua Zhang, Yingying Ma, Zhuo Yang, and Weijun Liu. "Diatomite/Cu/Al layered double hydroxide hybrid composites for polyethylene degradation." RSC Advances 10, no. 17 (2020): 9808–13. http://dx.doi.org/10.1039/c9ra10940d.

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Huang, Zhi-Zhen, та Ruo-Jun Sun. "Novel Stereoselective Synthesis of (E)-α,β-Unsaturated Nitriles and Ketones by the Tandem reaction of Deprotonation–oxidation–Wittig Reaction from Phosphonium Salts". Journal of Chemical Research 2003, № 1 (2003): 40–41. http://dx.doi.org/10.3184/030823403103172878.

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Phosphonium salt 1 and the alcohol 2 can undergo a tandem deprotonation–oxidation–Wittig reaction in the presence of sodium hydroxide and manganese dioxide, afford to an efficient method for the stereoselective synthesis of ( E)-α,β-unsaturated nitriles and ketones 3.

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Dheilly, Rose-Marie, Yahya Sebaibi, Joseph Tudo, and Michèle Queneudec. "Importance de la présence de magnésie dans le stockage de la chaux: carbonatation de l'oxyde et de l'hydroxyde de magnésium." Canadian Journal of Chemistry 76, no. 8 (1998): 1188–96. http://dx.doi.org/10.1139/v98-126.

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The influence of relative air moisture, temperature, and concentration of carbon dioxide on the carbonation of magnesium oxide and hydroxide have been studied in normal climatic conditions. The MgO and Mg(OH)2 used for this original work are pure granular materials. The different species that appear during the process of carbonation and the most stable form in usual conditions of storage were identified. Moreover, the study of the different climatic factors showed that the carbonation is never complete even after a prolonged exposure.Key words: carbonation, magnesium oxide, magnesium hydroxide

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Mustafayeva, F. A., N. T. Kakhramanov, and O. M. Guliyeva. "CRYSTALLIZATION OF MODIFIED COMPOSITES BASED ON ALUMINUM HYDROXIDE AND POLYETHYLENE MIXTURE." Azerbaijan Chemical Journal, no. 2 (June 19, 2023): 69–77. http://dx.doi.org/10.32737/0005-2531-2023-2-69-77.

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The article presents the results of a dilatometric study of the crystallization of modified with structure-forming agent composites based on aluminum hydroxide and a mixture of high and low density polyethylenes. The influence of aluminum hydroxide concentration on the regularity of the change in the dependence of the specific volume, as well as the free specific volume on temperature, has been established. The crystallization onset temperature and the approximate values of the glass transition temperature of composite materials are determined. The studies were carried out in the process of st

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