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Synthesis,characterization and catalytic methanation performance of modified kaolin-supported Ni-based catalysts

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文摘 Kaolin as a raw material for mesoporous support was firstly modified by calcination,acid treatment,and then was used to prepare nickel catalysts.The amount of alumina whichwas activated in kaolin during thermal treatment and then leached out in the acid was different.XRD pattern of the kaolin calcined at 600 °C or 900 °C exhibited only the diffraction peaks for amorphous silica and quartz while that calcined at 1100 °C showed obvious peaks for γ-Al_2O_3.Therefore,the nickel-based catalysts exhibited different physic-chemical properties.Atmospheric syngas methanation over the catalysts clarified an activity order of CA-1100 > CA-900 > CA-1400 > CA-600 > KA ≈ 0 at temperatures of 350–650 °C and a space velocity of 120 L·g~(–1)·h~(–1).Metallic nickel with small diameter which has medium interaction with the modified kaolin and is well dispersed on the support would have reasonably good activity and carbon-resistance for syngas methanation.
来源 Chinese Journal of Chemical Engineering ,2019,27(12):2953-2959 【核心库】
DOI 10.1016/j.cjche.2019.04.009
关键词 Methanation ; Kaolin ; Catalyst ; Catalyst support ; Leaching
地址

1. Institute of Process Engineering,Chinese Academy of Sciences, State Key Laboratory of Multi-phase Complex System, Beijing, 100190  

2. China University of Mining and Technology(Xuzhou), Xuzhou, 221116  

3. Institute of Industrial Chemistry and Energy Technology,Shenyang University of Chemical Technology, Shenyang, 110142

语种 英文
文献类型 研究性论文
ISSN 1004-9541
学科 化学
基金 国家自然科学基金 ;  国家863计划
文献收藏号 CSCD:6669073

参考文献 共 46 共3页

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引证文献 1

1 Chang Zhouxin Ni-Al mixed metal oxide with rich oxygen vacancies: CO methanation performance and density functional theory study Chinese Journal of Chemical Engineering,2022,46:73-83
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