Feifei Hu, Chengbing Fu, Chenchen Zhao, Peng Liu, Wei Tian, Bo Chen, Hongyan Pan, Qian Lin
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Effect of Shell Thickness on the Properties of Multi-Pd Cores-Hollow Carbon Shell Catalyst mPd@HCS
Traditional catalysts with one core and one shell structure have few active sites and shell structure parameters are difficult to be regulated. In order to solve these two problems, it is presented herein a multi-Pd-core and porous carbon shell catalyst mPd@HCS, where multiple Pd nuclei provide more active sites for the reaction, the shell structure parameters are tuned by the adjustment of shell thickness, and the influence of shell thickness on the performance of H2O2 direct synthesis was mainly investigated. The results showed that the selectivity and yield of H2O2 changed volcanically with the increase of carbon crust thickness because of the compromise between reactants diffusion and product degradation, and the selectivity (87%) and productivity (1938 mmol gPd−1 h−1) of the sample with middle shell thickness (10.18 nm) were the highest.
期刊介绍:
Early dissemination of important findings from Asia which may lead to new concepts in catalyst design is the main aim of this journal. Rapid, invited, short reviews and perspectives from academia and industry will constitute the major part of Catalysis Surveys from Asia . Surveys of recent progress and activities in catalytic science and technology and related areas in Asia will be covered regularly as well. We would appreciate critical comments from colleagues throughout the world about articles in Catalysis Surveys from Asia . If requested and thought appropriate, the comments will be included in the journal. We will be very happy if this journal stimulates global communication between scientists and engineers in the world of catalysis.