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H₂S 1

P₂O₅-SiO₂ 1

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PH₃ 1

aqueous suspension 1

black shale 1

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catalytic oxidation 1

di-(2-ethylhexyl)phosphoric acid 1

diffraction 1

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Vanadium(IV) solvent extraction enhancement in high acidity using di-(2-ethylhexyl)phosphoric acid with

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 1, Pages 56-67 doi: 10.1007/s11705-022-2185-8

Abstract: Under the conditions of pH 0.8, di-(2-ethylhexyl)phosphoric acid concentration of 20%, phase ratio ofAt the same time, the hydrogen ions of di-(2-ethylhexyl)phosphoric acid also enter the water phase more

Keywords： vanadium black shale solvent extraction high acidity extraction

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Preparation and property of porous hydroxyapatite as an inorganic dispersant used in suspension polymerization

XU Kaqiu, XU Jiale, WANG Yuhong

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 1, Pages 49-54 doi: 10.1007/s11705-008-0004-5

Abstract: hydroxyapatite (HAP) for suspension polymerization dispersant was prepared using calcium carbonate and phosphoricoptimized as follows: solid content of calcium carbonate aqueous suspension 90 g/L, concentration of phosphoric

Keywords： diffraction stability nitrogen adsorption phosphoric aqueous suspension

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A microextraction approach for rapid extraction and separation of Mn(II) and Co(II) using saponified D2EHPA system

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 6, Pages 963-972 doi: 10.1007/s11705-021-2081-7

Abstract: simulating leachate of spent lithium-ion battery cathode materials using saponified di-(2-ethylhexyl)phosphoric

Keywords： equilibrium mass transfer coefficient microextraction multicomponent extraction di-(2-ethylhexyl)phosphoric

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Preparation of P

Wenjiang LI, Fei XIE, Dongxu HUA, Chunli ZHANG, Chen DAI, Zhenyun YU, Meizhou QI, Shaojun YU

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 3, Pages 314-317 doi: 10.1007/s11705-010-0573-y

Abstract: by a sol-gel/emulsion method which uses tetraethoxysilane (TEOS) as the precursor for the SiO and phosphoric

Keywords： P₂O₅-SiO₂ hollow microspheres sol-gel/emulsion phosphoric acid

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Removal of P₄, PH₃ and H₂S from Yellow Phosphoric Tail Gas by a Catalytic

Ning Ping,Hans-Jörg Bart,Wang Xueqian,Ma Liping,Chen Liang

Strategic Study of CAE 2005, Volume 7, Issue 6, Pages 27-35

Abstract:

Yellow phosphorus tail gas is a resource to produce bulk chemicals, such as formate, oxalate, methanol and so on, after pretreatment and purification. In this study, catalytic oxidation of phosphorus and hydrogen sulfide in yellow phosphorus tail gas was investigated with activated carbon and a home-made catalyst KU2. Phosphorus and hydrogen sulfide adsorption characteristics on the catalysts were studied in a fixed-bed system at different temperatures between 20 and 140 ℃ under atmospheric pressure. Both KU2 and activated carbon proved to be effective catalysts in the catalytic oxidation process (COP) for H₂S and PH₃ removal. Purification efficiency increases with the increase of temperature and oxygen concentration in yellow phosphorus tail gases. Under optimized operation conditions the product gas with a content of hydrogen sulfide ＜5 mg/m³, total phosphorus＜ 5 mg/m³ was obtained by using the COP process. Spent catalysts could be restored to the original activity after several regenerations. A mathematical model was developed to simulate the experimental results and the mass transfer coefficient for the experiment was evaluated. Good agreement of the experimental breakthrough curves with the model predictions was observed.

Keywords： catalyst catalytic oxidation H₂S P₄ PH₃ fixed bed