Journal ArticleDOI
Alumina-supported tungsten catalysts for the hydrogenation of carbon monoxide
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TLDR
Alumina-supported tungsten catalysts have been studied over a range of conditions (1-30 atm 2:1 H 2 /CO ratio) to investigate their usefulness as specific catalysts for C 2 -C 4 hydrocarbon formation from CO and hydrogen.About:
This article is published in Catalysis Today.The article was published on 1991-09-30. It has received 8 citations till now. The article focuses on the topics: Catalyst support & Industrial catalysts.read more
Citations
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Tungsten and Tungsten Carbide Supported on Activated Carbon: Surface Structures and Performance for Ethylene Hydrogenation
TL;DR: In this article, Tungsten catalysts supported on an activated carbon were prepared, with different metal loading, by using either ammonium tungstate or tungsten hexacarbonyl as metal precursor compounds.
Journal ArticleDOI
Molecular structure and sour gas surface chemistry of supported K2O/WO3/Al2O3 catalysts
Minghui Zhu,Bin Li,Jih-Mirn Jehng,Lohit Sharma,Julian Taborda,Lihua Zhang,Eric A. Stach,Eric A. Stach,Israel E. Wachs,Zili Wu,Jonas Baltrusaitis +10 more
TL;DR: In this paper, molecular structures of the unpromoted and K2O-promoted supported WO3/Al2O3 catalysts were studied with in situ Raman and UV-vis spectroscopy.
Journal ArticleDOI
Effects of free iron oxyhydrates and soil organic matter on copper sorption-desorption behavior by size fractions of aggregates from two paddy soils.
TL;DR: The findings supported again the dominance of the coarse sand fraction in sorption of metals and the preference of absorbed metals bound to SOM in differently stabilized status among the size fractions.
Journal ArticleDOI
Red mud based passivator reduced Cd accumulation in edible amaranth by influencing root organic matter metabolism and soil aggregate distribution.
Zhi-Min Xu,Ziyan Lu,Liangshi Zhang,Hanyun Fan,Yi-Fan Wang,Junwei Li,Yanlin Lin,Hui Liu,Shi-Hong Guo,Mingyu Xu,Junfeng Wang +10 more
TL;DR: In this article, the effect of red mud on the transformation of Cd fraction in acidic Cd-polluted soil, photosynthetic property, and Cd accumulation in edible amaranth were investigated.
Patent
Fischer-Tropsch synthesis catalyst, its preparation method and application thereof
TL;DR: In this article, a Fischer-Tropsch synthesis catalyst is described, and the specific surface area of the catalyst provided by the invention is usually 50-240 m /g.
References
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Journal ArticleDOI
On a Theory of the van der Waals Adsorption of Gases
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The preparation of WO3/TiO2 and Wo3/Al2O3 and characterization by temperature-programmed reduction
D. C. Vermaire,P. C. Van Berge +1 more
TL;DR: An equilibrium adsorption technique was used to prepare WO3TiOO2 and WO 3Al2O3 samples for tungsten loading by varying the pH and concentration of the aqueous solutions as discussed by the authors.
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X-ray photoelectron spectroscopy study of supported tungsten oxide
P. Biloen,G.T. Pott +1 more
TL;DR: In this article, it was shown that WO 3 γ-Al 2 O 3 cannot be appreciably reduced in hydrogen at 550 °C, whereas WO3 SiO 2 is reduced to lower valence states and unsupported wO 3 is completely reduced to tungsten metal under these conditions.
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Laser Raman characterization of tungsten oxide supported on alumina: influence of calcination temperatures
TL;DR: In this article, the influence of calcination temperature on the solid state chemistry of WO3 on Al2O3 was examined with laser Raman spectroscopy, which revealed the amorphous and crystalline structural transformations occurring in the WO 3 on Al 2O3 oxide system.
Journal ArticleDOI
Kinetic studies with a sulfur-tolerant methanation catalyst
TL;DR: In this article, the authors examined the kinetics of methane formation by the molybdenum disulfide-catalyzed reaction of hydrogen and carbon monoxide and gave the stoichiometry of the reaction by 2CO + 2H2 → CH4 + CO2.