Effect of Mo loading and additive Co on activity of sulfur-resistant methanation catalyst

被引：0

作者：

Li, Zhenhua ^{[1
]}

Wang, Erdong ^{[1
]}

Ding, Guozhong ^{[1
]}

Shang, Yuguang ^{[1
]}

Wang, Haiyang ^{[1
]}

Wang, Baowei ^{[1
]}

Lü, Jing ^{[1
]}

Ma, Xinbin ^{[1
]}

Qin, Shaodong ^{[2
]}

Sun, Qi ^{[2
]}

机构：

[1] Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University

[2] National Institute of Clean-and-Low-Carbon Energy

来源：

Tianjin Daxue Xuebao (Ziran Kexue yu Gongcheng Jishu Ban)/Journal of Tianjin University Science and Technology | 2013年 / 46卷 / 06期

关键词：

Ammonium molybdate tetrahydrate; Cobalt oxide; Methanation; Sulfur-resistant catalyst;

D O I：

10.11784/tdxb20130613

中图分类号：

学科分类号：

摘要：

The effect of Mo loading on the activity of Mo/Al2O3 and Mo/25%CeO2-Al2O3 catalysts for sulfur-resistant methanation reaction was studied, and the optimum Mo loading was proved to be the monolayer coverage of MoO3 over the support. At larger MoO3 loading, crystallized MoO3 is formed and its size increases with the increase of MoO3 loading, which is considered one of the factors in the decrease of methanation activity. Addition of Co to Mo/Al2O3 and Mo/25%CeO2-Al2O3 reduces methanation activity, and the characterization results by means of N2 adsorptiondesorption, X-ray diffraction (XRD) and laser Raman spectrum (LRS) show that the formation of crystalline CoMoO4 is the main factor. All of the above provide a guidance for designing high performance sulfur-resistant methanation catalysts.

引用

页码：546 / 552

页数：6

共 18 条

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