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Mechanism of oxygen exchange in single- and multiphase La–Sr–Mn–O samples was studied by steady-state isotopic transient kinetic analysis (900 °C). Strong correlation between oxygen mobility and the rate of N 2 O decomposition was found.
Industrial Cu/ZnO/Al 2 O 3 catalysts are prepared via two hierarchical microstructure-directing steps: (i) meso-structuring of the precursor material upon ageing and (ii) nano-structuring of the oxide material upon calcination.
Comparison of activity and spectroscopic data of the sulfide catalysts prepared with nitrilo triacetic acid (NTA) implies that the increase of Co-promoted sites accounts for catalytic activity enhancement, and evidences the creation of different kinds of active sites.
Temperature-programed reduction profiles of presulfided MoS 2 /γ-Al 2 O 3 hydrotreating catalysts reveal Mo content dependant shapes and peak temperatures: a theoretical interpretation based on first principles is provided.
Selective hydrogenolysis of tetrahydrofurfuryl alcohol to 1,5-pentanediol was catalyzed by Rh–MoO x /SiO 2 catalysts. Biomass-derived tetrahydrofurfuryl alcohol is selectively converted to 1,5-pentanediol by Rh–MoO x /SiO 2 -catalyzed hydrogenolysis. The catalysts can be reused without loss...
Iron and copper metal organic frameworks of 1,3,5-benzenetricarboxylate serve to oxidize benzylic compounds with t -butylhydroperoxide in acetonitrile under mild reaction conditions. MOFs act as heterogeneous catalysts and can be reused for consecutive runs.
The mechanisms governing the oxidation of CO on Au/TiO 2 catalysts, both in the absence of H 2 and in H 2 -rich gas mixtures, the deactivation behavior and the apparent activation barrier for CO oxidation over these catalysts at elevated temperatures, in the range 80–180 °C, were investigated....
This paper describes the properties and kinetic performance of Au/HMS–M (M = (–), Ce, Ti and Fe) catalyst during the aromatic liquid hydrogenation. The trend of catalytic activity is linked with: (i) the higher ratio of positively charged metallic gold Au δ + /Si (XPS), and (ii) the higher...
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