Results 251 to 260 of about 1,318,053 (287)

Reduction of sulfates by hydrogen

Canadian Journal of Chemistry, 1976
The initial stage of reduction of anhydrous sulfates by H2 may lead to the formation of any of the following: (1) sulfates at lower valency, e.g., reduction of CuSO4, HgSO4, Fe2(SO4)3; (2) metals, e.g., Cu2SO4, Ag2SO4; (3) sulfides, e.g., NiSO4, CoSO4, CdSO4, CaSO4, SrSO4, BaSO4, and alkaline metal sulfates; (4) oxides, e.g., Al2(SO4)3, MgSO4, BeSO4; (
Fathi Habashi, Shaheer A. Mikhail, Kim Vo Van   +2 more
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Boosted chlorate hydrogenation reduction via continuous atomic hydrogen

Journal of Hazardous Materials
Chlorate (ClO3-) is a common toxic oxyanion pollutant from various industrial processes, and hydrogenation reduction of ClO3- by atomic hydrogen (H*) is a promising and effective method. Therefore, more efforts are needed to rationalize the design of catalytic active sites for H2 activation to boost ClO3- hydrogenation reduction. In this work, superior
Yilin, Lu, Xiangdong, Zhu, Aodi, Li, Cheng, Cheng, Beibei, Xiao, Peixin, Cui, Yujun, Wang, Dongmei, Zhou   +7 more
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Reduction of stibnite by hydrogen

Journal of the Less Common Metals, 1979
Abstract The reduction of stibnite by hydrogen in the absence and in the presence of sulfur acceptors has been investigated at atmospheric pressure and at temperatures of 200 – 600 °C. The activation energy of these processes has been found to be 17.4 kcal mol −1 (−7.2 × 10 4 J), 20.4 kcal mol −1 (−8.5 × 10 4 J), and 27.7 kcal mol −1 (−11.6 × 10
Arpad E Torma, Osman T Inal
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Reduction of Fe2O3 with hydrogen

Applied Catalysis A: General, 2010
Abstract The reduction of Fe 2 O 3 with hydrogen was studied. The thermodynamic analysis of the process implied that temperature-programmed reduction of the oxide should proceed in three steps, i.e. Fe 2 O 3  → Fe 3 O 4  → “FeO” → Fe, at X H 2 O / X H 2 ratio over 0.35, but in two steps, i.e.
Jerzy Zieliński, Ilona Zglinicka, Leszek Znak, Zbigniew Kaszkur   +3 more
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Hydrogen Reduction of Tungsten Trioxide

Nature, 1952
THE existence of two tungsten oxides (β- and γ-oxides) intermediate in composition between WO2 and WO3 has been well established by Glemser and Sauer1 and Hagg and Magneli2,3 using X-ray diffraction methods.
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Hydrogen Reduction of Tungsten Oxides

Nature, 1954
PREVIOUS work1 has shown that hydrogen reduction of tungsten trioxide gave the β-oxide (W20O58)2, which was then apparently reduced both to β-tungsten (a = 5.04 A.) and to tungsten dioxide or the γ-oxide.
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Hydrogen reduction of cassiterite concentrates

1991
Hydrogen as a reducing agent shows, compared to carbon monoxide, some advantages both metallurgically and environmentally. A very precise adjustment of the reduction potential with hydrogen-steam mixtures allows reduction conditions under which it is possible to produce a low iron-containing tin with high tin yield, though the tin is not completely ...
G. Leuprecht, P. Paschen
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High-Pressure Hydrogen Reduction

2023
Chen Yongming, He Jing, Xu Kuangdi
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REDUCTION OF OXYLUCIFERIN BY ATOMIC HYDROGEN

Science, 1931
E N, Harvey, G I, Lavin
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Hydrogen Plasma Reduction

2022
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