介质阻挡放电等离子体处理载体对CO甲烷化Ni/SiO2催化剂性能的改进

doi:10.3969/j.issn.0438-1157.2013.01.031

化工学报 ›› 2013, Vol. 64 ›› Issue (1): 283-288.DOI: 10.3969/j.issn.0438-1157.2013.01.031

• 催化、动力学与反应器 • 上一篇下一篇

介质阻挡放电等离子体处理载体对CO甲烷化Ni/SiO₂催化剂性能的改进

赵化龙¹, 赵彬然¹, 闫晓亮¹, 刘媛², 王勇², 刘昌俊¹

1. 天津大学化工学院先进纳米技术中心,天津 300072;
2. 北京低碳清洁能源研究所,北京 102209

收稿日期:2012-09-02 修回日期:2012-11-29 出版日期:2013-01-05 发布日期:2013-01-05
通讯作者: 刘昌俊
作者简介:赵化龙(1986—),男,硕士研究生。
基金资助:
北京低碳清洁能源研究所课题。

Ni/SiO₂ catalyst for CO methanation with support treated by dielectric barrier discharge plasma

ZHAO Hualong¹, ZHAO Binran¹, YAN Xiaoliang¹, LIU Yuan², WANG Yong², LIU Changjun¹

1. Advanced Nanotechnology Center, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;
2. National Institute of Clean-and-Low-Carbon Energy, Beijing 102209, China

Received:2012-09-02 Revised:2012-11-29 Online:2013-01-05 Published:2013-01-05

摘要/Abstract

摘要： 以经介质阻挡放电等离子体处理的SiO₂为载体,用浸渍法制备了Ni/SiO₂催化剂,并进行了CO甲烷化反应评价。与载体未经处理的常规Ni/SiO₂催化剂相比,载体经处理的催化剂在400℃下的CO与H₂转化率均提高了约6%,且在经700℃烧结6 h后,活性仍高于常规催化剂。XRD、TEM和H₂-TPR结果表明,载体经处理的催化剂,Ni颗粒粒径更小、粒径分布更集中,Ni与SiO₂之间的相互作用更强,证明等离子体处理使SiO₂更有利于促进Ni的分散。

关键词: 镍, 甲烷化, 等离子体, 催化剂

Abstract: Ni/SiO₂ catalyst was prepared for CO methanation using SiO₂ treated by dielectric barrier discharge plasma before impregnation.Compared with the conventional Ni/SiO₂ catalyst without the treatment, the CO and H₂ conversions at 400℃ were both approximately 6% higher for the support-treated catalyst.After the high temperature reaction at 700℃ for 6 h, the support-treated catalyst was still more active than conventional Ni/SiO₂ catalyst.XRD,TEM and H₂-TPR results showed that the support-treated catalyst had smaller Ni particle size and stronger interaction between Ni and SiO₂, which confirmed that plasma treatment made SiO₂ more favorable for Ni dispersion.

Key words: nickel, methanation, plasma, catalyst

中图分类号:

O643

赵化龙, 赵彬然, 闫晓亮, 刘媛, 王勇, 刘昌俊. 介质阻挡放电等离子体处理载体对CO甲烷化Ni/SiO₂催化剂性能的改进[J]. 化工学报, 2013, 64(1): 283-288.

ZHAO Hualong, ZHAO Binran, YAN Xiaoliang, LIU Yuan, WANG Yong, LIU Changjun. Ni/SiO₂ catalyst for CO methanation with support treated by dielectric barrier discharge plasma[J]. CIESC Journal, 2013, 64(1): 283-288.

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介质阻挡放电等离子体处理载体对CO甲烷化Ni/SiO₂催化剂性能的改进

Ni/SiO₂ catalyst for CO methanation with support treated by dielectric barrier discharge plasma

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