Search

Abstract: Studies on dehydrogenation of propane (DHP) over monometallic Pt-SBA-15 catalysts, which contain markedly different Pt particle sizes, reveal that the reaction is dependent on the size of the particle. Catalyst with smaller particles (∼3nm) is much more active and less selective than that with larger particles (∼21nm). Rate of coking, selectivity to coke formation and the amount of coke formed are significantly higher over the former than that on the latter. [Copyright &y& Elsevier]

Abstract: A highly efficient sp3–sp3 carbon–carbon bond formation system was developed for the aerobic ruthenium-catalyzed oxidative cross-dehydrogenative coupling reaction between tertiary amines and sp3 C–H compounds in the presence of RuCl3/O2, thus giving the corresponding α-functionalized amines. Compared with the reported method, H2O2 or t BuOOH was replaced successfully by economical and facile oxygen as the oxidant. Three types of activated C–H bonds for pronucleophiles were evaluated in this system. All these features combined are in accordance with important prospective green chemistry aspects. [Copyright &y& Elsevier]

Abstract: Carbon nanofibers (CNFs) with different microstructures were synthesized as the support of Pt catalyst for decalin dehydrogenation to evolve pure hydrogen. The results show that in a liquid-film state at the temperature of 240°C for reactor external heating, 5wt% Pt catalyst supported on platelet CNFs gives a TOF of 732.4mol H2/mol metal in 2h. The microstructure of CNFs and the metal particle size have great impact on the performance of the catalyst for the reaction. [Copyright &y& Elsevier]