文献类型：会议论文

英文题名：Synthesis of Ce-MCM-41 mesoporous solids and catalytic evaluation of Ni/Ce-MCM-41 catalysts for hydrogen production

作者：Wang, J.A.[1]; Guevara, J.C.[1]; Chen, L.F.[1]; Salmones, J.[1]; Valenzuela, M.A.[1]; Salas, P.[2]; Cao, F.H.[3]; Yu, G.X.[4]

机构：[1] ESIQIE, Instituto Politécnico Nacional, Col. Zacatenco, 07738 México D. F., Mexico; [2] Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Apartado Postal 1-1010, 76000 Querétaro, Mexico; [3] Chemical Engineering School, East China University of Science and Technology, 200237 Shanghai, China; [4] School of Chemistry and Environmental Engineering, Jianghan University, 430056 Wuhan, China

会议论文集：New Catalytic Materials

语种：英文

外文关键词：Cerium compounds - Catalyst activity - Methane - Temperature distribution - Hydrogen production - Yarn - Catalyst selectivity - Silicon compounds

摘要：Ce-containing MCM-41 mesoporous materials with large surface area and ordered pore structure system have been possible to be synthesized through a surfactant-assisted approach. The textural properties and structural regularity of the materials varied with the Si/Ce molar ratio. It is found that the band at 970 cm-1 in the FTIR spectrum of the Ce-MCM-41 mesoporous materials might be used as an indicator of the formation of the Ce-O-Si bond and its intensity as a measure of a degree of cerium ion substitution in the framework of Si-MCM-41. When Ni was loaded on the Ce-MCM-41 support, the Ni/Ce-MCM-41 catalysts show high catalytic activity which has strong temperature dependence. The methane conversion over these catalysts reached 60-75 % with a 100 % selectivity towards hydrogen. ? 2010 Materials Research Society.