文献类型：期刊文献

英文题名：NiCo@NiCo phyllosilicate@CeO2 hollow core shell catalysts for steam reforming of toluene as biomass tar model compound

作者：Li, Ziwei Li, Min Ashok, Jangam Kawi, Sibudjing

第一作者：李自卫;Li, Ziwei

通信作者：Kawi, Sibudjing

机构：[1] School of Chemical Engineering, Guizhou Institute of Technology, Guiyang, 550003, China; [2] School of Civil Engineering, Guizhou Institute of Technology, Guiyang, 550003, China; [3] Department of Chemical and Biomolecular Engineering, National University of Singapore, 117585, Singapore

第一机构：贵州理工学院化学工程学院

通信机构：Department of Chemical and Biomolecular Engineering, National University of Singapore, 117585, Singapore

年份：2019

卷号：180

起止页码：822-830

外文期刊名：Energy Conversion and Management

收录：EI(收录号：20184706120942);Scopus(收录号：2-s2.0-85056752842)

语种：英文

外文关键词：Specific surface area - Cobalt compounds - Sintering - Cobalt alloys - Steam - Binary alloys - Catalyst activity - Cerium oxide - Shells (structures) - X ray photoelectron spectroscopy - Carbon - Steam reforming - Toluene

摘要：Developing sintering and carbon resistant tar removal catalysts is crucial for biomass gasification technology. Herein, for the first time, NiCo@NiCo phyllosilicate@CeO2 hollow core shell catalysts have been designed for steam reforming of toluene (SRT) as the biomass tar model compound. They show both good catalytic activity and stability within 45 h of time on stream due to their high sintering resistance of NiCo because of the strong interactions between NiCo and CeO2, high metal exposure as a result of the high specific surface area, high surface metal concentration as well as the high oxygen vacancies as evidenced from the H2-Temperature-programmed reduction (H2-TPR), H2 chemisorption and X-ray photoelectron spectroscopy (XPS) characterizations respectively. Additionally, the synergistic effect between Ni and Co further improves their carbon resistant property. By comparison, Co@Co phyllosilicate@CeO2 catalysts perform the lowest toluene conversion and stability mainly due to their structural instability during reaction resulting from their high Si/Co ratio, leading to their low specific surface area and Co exposure. The outstanding SRT performance of NiCo@NiCo phyllosilicate@CeO2 catalysts indicates their promising application for steam reforming of biomass tar reaction. ? 2018