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Researchers from China University of Petroleum Report on Findings in Chemical Engineering

May 28, 2014



By a News Reporter-Staff News Editor at Journal of Engineering -- Current study results on Chemical Engineering have been published. According to news reporting originating in Beijing, People's Republic of China, by VerticalNews journalists, research stated, "A series of mesoporous sieves with different pore diameters and structures have been controllably synthesized by adding variable amounts of swelling agent 1,3,5-trimethylbenzene in the preparation process for SBA-15. NiMo catalysts supported by mesoporous sieves are prepared by using the newly proposed Mo-based organic-inorganic hybrid nanocrystals as precursors to load Mo and subsequently using wetness impregnation to load Ni."

The news reporters obtained a quote from the research from the China University of Petroleum, "The hydrodesulfurization (HDS) activity of these obtained catalysts is evaluated in a continuously flowing tubular fixed-bed microreactor using 1 wt% dibenzothiophene (DM.) in heptane as a model compound. The results show that HDS ratio has gradually increased as the pore diameter of supports is enlarged from 7 to 11 nm with the mesostructure keeping an ordered two-dimensional hexagonal symmetcy. When the structure is in the intermediate stage of structural transition from ordered hexagonal mesostructure to mesocecullar structure, HDS ratio is decreased dramatically due to the disordered and collapsed structure to block the pore channels."

According to the news reporters, the research concluded: "After the mesocecullar structure with three-dimensional open pore channels is formed which is more convenient for the molecular diffusion, HDS ratio has increased again as a result It is concluded that both the pore size and window size connecting the adjacent pores play an important role in the HDS activity but the window size is of more significant importance, which is the key point for the enhanced catalytic performance."

For more information on this research see: Effect of pore diameter and structure of mesoporous sieve supported catalysts on hydrodesulfurization performance. Chemical Engineering Science, 2014;111():381-389. Chemical Engineering Science can be contacted at: Pergamon-Elsevier Science Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, England. (Elsevier - www.elsevier.com; Chemical Engineering Science - www.elsevier.com/wps/product/cws_home/215)

Our news correspondents report that additional information may be obtained by contacting P. Yuan, China Univ Petr, Key Lab Catalysis, Beijing 102249, People's Republic of China. Additional authors for this research include J.X. Liu, Y.T. Li, Y. Fan, G. Shi, H.Y. Liu and X.J. Bao.

Keywords for this news article include: Asia, Beijing, Chemical Engineering, People's Republic of China

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Journal of Engineering


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