Results 231 to 240 of about 63,695 (265)

Basic properties of molybdenum and tungsten nitride catalysts

Applied Catalysis A: General, 2005
Abstract The basic and related properties of high surface area Mo2N and W2N catalysts were characterized using CO2-temperature programmed desorption (TPD), the decomposition and dehydration of 2-methyl-3-butyn-2-ol (MBOH), and changes in the reaction rates on the addition of CO2, a base site poison.
Randolph C.V. McGee, Shyamal K. Bej, Levi T. Thompson   +2 more
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Xylitol Hydrogenolysis over Ruthenium‐Based Catalysts: Effect of Alkaline Promoters and Basic Oxide‐Modified Catalysts

ChemCatChem, 2017
AbstractThe aqueous‐phase hydrogenolysis of xylitol into glycols over Ru/C was performed in the presence and absence of a wide range of concentrations of Ca(OH)2 to investigate the reaction pathway. Without base, epimerization and cascade decarbonylation were the predominant reactions with high selectivities to C5 and C4 alditols and light alkanes at ...
Maxime, Riviere, Perret, Noémie, Cabiac, Amandine, Delcroix, Damien, Pinel, Catherine, Besson, M.   +5 more
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Relationships between basicity and reactivity of zeolite catalysts

Research on Chemical Intermediates, 2000
A wide variety of characterization methods, including UV-vis spectroscopy of adsorbed I2, microcalorimetry of CO2 adsorption, and x-ray absorption spectroscopy at the Cs LIII edge of zeolite cations, was applied to a series of alkali containing zeolites in order to elucidate the nature of the basic sites on these materials. In addition, three catalytic
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New chiral basic organic catalysts

2008
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Role of oxide catalysts basicity in selective oxidation

1992
Abstract Rates of oxidative coupling and ammoxidation of some hydrocarbons are found to increase linearly with increasing the amounts of weak and moderate basic sites on a surface of oxide catalyst. Such a correlation indicates that hydrocarbon activation occurs via the C-H bond heterolytic dissociation under the attack of catalyst basic site ...
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Studies on solid catalysts with a basic character III. Nature of acidic and basic centers on the surface of sodium-silica catalysts

Journal of Catalysis, 1969
CO2 adsorption has been measured on seven silica catalysts containing different amounts of sodium. The results are compared with those of a previous study of ammonia adsorption. As with NH3, the adsorption of CO2 increases with sodium content, but evidence is presented to show that the centers for adsorption of CO2 and NH3 are different. The adsorption
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Recognizing the best catalyst for a reaction

Nature Reviews Chemistry, 2023
Joost Smit, Peter Johnston, Graham Hutchings   +2 more
exaly  

Engineering catalyst supports to stabilize PdOx two-dimensional rafts for water-tolerant methane oxidation

Nature Catalysis, 2021
HaifengXiong xiong, Deepak Kunwar, Dong Jiang   +2 more
exaly  

Microkinetic Modeling: A Tool for Rational Catalyst Design

Chemical Reviews, 2021
Ali Hussain Motagamwala, James A Dumesic
exaly  

MOF-enabled confinement and related effects for chemical catalyst presentation and utilization

Chemical Society Reviews, 2022
Jian Liu, Timothy A Goetjen, Julia G Knapp   +2 more
exaly