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Effect of Ni particle size on the production of renewable methane from CO_(2) over Ni/CeO_(2) catalyst

Journal of Energy Chemistry 2021年第10期30卷 602-611,I0015页

作者： Lili Lin clifford A.Gerlak Chang Liu Jordi Llorca Siyu Yao Ning Rui Feng Zhang Zongyuan Liu Sen Zhang Kaixi Deng Christopher B.Murray José A.Rodriguez Sanjaya D.Senanayake Chemistry Division Brookhaven National LaboratoryUptonNY 11973USA Institute of Industrial Catalysis State Key Laboratory of Green Chemistry Synthesis TechnologyCollege of Chemical EngineeringZhejiang University of TechnologyHangzhou 310014ZhejiangChina Department of Chemistry University of VirginiaCharlottesvilleVA 22904USA Institute of Energy Technologies Department of Chemical Engineering and Barcelona Research Center in Multiscale Science and EngineeringUniversitat Politècnica de CatalunyaEEBEEduard Maristany 10-1408019 BarcelonaSpain Zhejiang University Key Laboratory of Biomass Chemical Engineering of Ministry of Education College of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027ZhejiangChina Chemistry Department State University of New YorkStony BrookNYUSA Departments of Chemistry and Materials Science&Engineering University of Pennsylvania231 South 34th Street394PhiladelphiaPA 19104USA

Production of’renewable Methane’has attracted renewed research interest as a fundamental probe reaction and process for CO_(2)utilization through potential use in Cl fuel production and even for future space exploration ***_(2)methanation is a structure sensitive reaction on Ni/CeO_(2)*** precisely elucidate the size effect of the Ni metal center on the CO_(2)methanation performance,we prepared2%Ni/CeO_(2)catalysts with pre-synthesized uniform Ni particles(2,4 and 8 nm)on a high surface area CeO_(2)*** electron microscopy(TEM)and ambient pressure X-ray photo spectroscopy(AP-XPS)characterization have confirmed that the catalyst structure and chemical state was uniform and stable under reaction *** 8 nm sized catalyst showed superior methanation selectivity over the 4 and 2 nm counterparts,and the methanation activity in term of TOF is 10 times and 70 times higher than for the 4 and 2 nm counterparts,*** DRIFTS studies revealed that the larger Ni(8 nm particles)over CeO_(2)efficiently facilitated the hydrogenation of the surface formate intermediates,which is proposed as the rate determining step accounting for the excellent CO_(2)methanation performance.

关键词： CO_(2)methanation particle size effect Ni/CeO_(2) In situ DRIFTS Mechanism investigation

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A Web-based Model to disseminate“Best Lectures”in Rehabilitation Worldwide

A Web-based Model to disseminate“Best Lectures”in Rehabili...

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中国康复医学会第四届会员代表大会暨第三届中国康复医学学术大会

作者： Cohn Ellen R Brienza David Brubaker clifford E School of Health and Rehabilitation Sciences University of PittsburghPA 15260

This paper describes a model to share"best lectures"in rehabilitation to a worldwide au-dience via a web-based Supercourse. The Supercourse model promotes: global dissemination;quality con-trol via user feedback;multilingual materials,and rapid presentation ***:The Internet pro-motes the sharing of much information and free *** contrast,higher education lectres are *** proposed that global faculty share their slide-based lectures by placing them in a”library

关键词： rehabilitation Internet education

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