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Attrition-resistant Ni-Mg/SiO2-Al2O3 catalysts with different silica sources for fluidized bed syngas methanation
Cui, Dianmiao1,2; Liu, Jiao1; Yu, Jian1; Su, Fabing1; Xu, Guangwen1
2017-02-23
发表期刊INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
ISSN0360-3199
卷号42期号:8页码:4987-4997
摘要

Attrition-resistant Ni-Mg/SiO2-Al2O3 catalysts for fluidized bed syngas methanation were prepared by combining co-precipitation and spray granulation using different silica sources including acidic silica sol (SS), sodium silicate (NS) and tetraethyl orthosilicate (TEOS). Air-jet attrition tests showed that the attrition strength of the resulting catalysts followed an order of C-10TEOS > C-33SS > C-1ONS > C-10SS, where C-10TEOS, as an example, refers to the catalyst with 10 wt.% silica using TEOS as its silica source. Characterizations show that the porosity and skeletal structure have strong correlation with catalyst attrition strength. Simultaneous hydrolysis of TEOS and co-precipitation caused C-10TEOS to have dense and continuous skeletal structure to have the high strength of its Ni-Mg/SiO2-Al2O3 precursor particles and thus the improved attrition resistance of sprayed catalyst. Silica sol filled in the voids among precursor particles resulted in a compact framework in C-33SS but its Ni-Mg/Al2O3 precursor had weak attrition resistance. Atmospheric syngas methanation over these catalysts at an SV of 600 NL g(-1) h(-1) in a fixed bed reactor clarified an activity order of C-10TEOS > C-1ONS approximate to C-33SS. The TEOS also enabled highly dispersed metallic Ni and many surface active sites to facilitate the methanation activity and stability of this catalyst. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

关键词Methanation Fluidized Bed Silica Support Tetraethyl Orthosilicate Spray Granulation Attrition Resistance
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
DOI10.1016/j.ijhydene.2017.01.139
收录类别SCI
语种英语
关键词[WOS]Fischer-tropsch Synthesis ; Synthetic Natural-gas ; Ni-mg/al2o3 Catalyst ; Particle Attrition ; Precipitated Sio2 ; Iron Catalysts ; Performance ; Reactors ; Alumina ; Binder
WOS研究方向Chemistry ; Electrochemistry ; Energy & Fuels
WOS类目Chemistry, Physical ; Electrochemistry ; Energy & Fuels
项目资助者National High Technology Research and Development Program of China(2015AA050502)
WOS记录号WOS:000403852600026
引用统计
被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/22727
专题多相复杂系统国家重点实验室
作者单位1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714
Cui, Dianmiao,Liu, Jiao,Yu, Jian,et al. Attrition-resistant Ni-Mg/SiO2-Al2O3 catalysts with different silica sources for fluidized bed syngas methanation[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2017,42(8):4987-4997.
APA Cui, Dianmiao,Liu, Jiao,Yu, Jian,Su, Fabing,&Xu, Guangwen.(2017).Attrition-resistant Ni-Mg/SiO2-Al2O3 catalysts with different silica sources for fluidized bed syngas methanation.INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,42(8),4987-4997.
MLA Cui, Dianmiao,et al."Attrition-resistant Ni-Mg/SiO2-Al2O3 catalysts with different silica sources for fluidized bed syngas methanation".INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 42.8(2017):4987-4997.
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