Ni-Mg-Al催化剂M2+/M3+比对CH4-CO2重整制合成气的影响

doi:10.16085/j.issn.1000-6613.2015.01.024

化工进展 ›› 2015, Vol. 34 ›› Issue (1): 138-142.DOI: 10.16085/j.issn.1000-6613.2015.01.024

Ni-Mg-Al催化剂M²⁺/M³⁺比对CH₄-CO₂重整制合成气的影响

沈朝峰¹, 黄伟², 秦岭¹, 胡贤辉¹, 陆超¹, 李小江¹

1 华电电力科学研究院, 浙江杭州 310030;
2 太原理工大学煤科学与技术教育部和山西省重点实验室, 山西太原 030024

收稿日期:2014-06-05 修回日期:2014-07-02 出版日期:2015-01-05 发布日期:2015-01-05
通讯作者: 沈朝峰(1987-),男,硕士,助理工程师,研究方向为煤炭深加工开发利用与燃料管理。E-mail chaofeng-shen@chder.com。
作者简介:沈朝峰(1987-),男,硕士,助理工程师,研究方向为煤炭深加工开发利用与燃料管理。E-mail chaofeng-shen@chder.com。

Effect of the ratio of M²⁺/M³⁺ on CH₄ reforming of CO₂ over Ni-Mg-Al catalyst

SHEN Chaofeng¹, HUANG Wei², QIN Ling¹, HU Xianhui¹, LU Chao¹, LI Xiaojiang¹

1 Huadian Electric Power Research Institute, Hangzhou 310030, Zhejiang, China;
2 Key Laboratory of Coal Science and Technology of Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China

Received:2014-06-05 Revised:2014-07-02 Online:2015-01-05 Published:2015-01-05

摘要/Abstract

摘要： 考察了Ni-Mg-Al催化剂中M²⁺/M³⁺比的不同对CH₄-CO₂重整制合成气反应性能的影响。在质量空速12000mL/(g_cat·h)、800℃条件下进行催化反应,并用X射线衍射、电子透射电镜等手段对催化剂进行了表征和分析。分析结果表明催化剂中单质与载体有很强的相互作用力并且在载体上均匀分布,同时反应过程中催化剂从单一的固溶体结构转变为固溶体-尖晶石共存结构,这有利于催化性能的提升。催化剂孔结构在反应前后也稳定存在,未发生坍塌。实验发现随着M²⁺/M³⁺比的不同,催化剂碱性强弱对其催化稳定性起着决定性作用,M²⁺/M³⁺比为3时,催化剂碱性最强,同时具有优良的抗积炭和抗烧结能力,是最佳M²⁺/M³⁺比。

关键词: 催化剂, 甲烷, 二氧化碳, 重整

Abstract: Effect of the ratio of M²⁺/M³⁺ on CH₄ reforming of CO₂ was studied in this paper. The catalytic performance of these catalysts was investigated at 800℃ and GHSV of 12000mL/(g_cat·h). The catalysts were characterized by means of XRD, TEM, H₂-TPR, CO₂-TPD and N₂-adsorption. The result suggests that the metal particles are uniformly distributed on the support and have strong metal-support interaction. The solid solution structure of catalyst is transformed into the coexistence structure of solid solution and spinel, which is beneficial to the improvement of the catalytic performance. In addition, the porous structure is always subsistent during the reaction. The experiment indicates that the basicity of catalysts plays key roles on the catalytic performance. It is concluded that the catalyst with the ion ratio is 3 has the strongest basicity as well as carbon deposition and metal sintering.

Key words: catalyst, methane, carbon dioxide, reforming

中图分类号:

O643

沈朝峰, 黄伟, 秦岭, 胡贤辉, 陆超, 李小江. Ni-Mg-Al催化剂M²⁺/M³⁺比对CH₄-CO₂重整制合成气的影响[J]. 化工进展, 2015, 34(1): 138-142.

SHEN Chaofeng, HUANG Wei, QIN Ling, HU Xianhui, LU Chao, LI Xiaojiang. Effect of the ratio of M²⁺/M³⁺ on CH₄ reforming of CO₂ over Ni-Mg-Al catalyst[J]. Chemical Industry and Engineering Progree, 2015, 34(1): 138-142.

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Ni-Mg-Al催化剂M²⁺/M³⁺比对CH₄-CO₂重整制合成气的影响

Effect of the ratio of M²⁺/M³⁺ on CH₄ reforming of CO₂ over Ni-Mg-Al catalyst

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