Effects of MgO and CaO on properties of Ni/γ-Al2O3 catalyst for the reforming of methane and steam

被引：0

作者：

Zhao, Yun-Li ^{[1
]}

Lü, Yong-Kang ^{[1
]}

Chang, Li-Ping ^{[1
]}

Bao, Wei-Ren ^{[1
]}

机构：

[1] State Key Laboratory of Coal Science and Technology Co-founded by Shanxi Province, Taiyuan University of Technology, Taiyuan 030024, China

来源：

Ranliao Huaxue Xuebao/Journal of Fuel Chemistry and Technology | 2010年 / 38卷 / 02期

关键词：

Carbon - Catalyst deactivation - Catalyst selectivity - Chemical reactors - Methane - Nickel oxide - Steam reforming;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Three Ni-based catalysts with or without MgO or CaO promoters were prepared by co-impregnation method and their properties for methane steam reforming to syngas were studied in a fixed-bed reactor. Results showed that CaO promoter on Ni-based catalyst had the best performance with 96.95% methane conversion, 68.93% CO selectivity and 73.58% H2 yield at the condition of n(H2O)/n(CH4)/n(N2)=2.86/1/3.28 with a GHSV 1800h-1 at 700°C. Results from XRD and H2-TPR experiments showed that the addition of CaO enhanced the active component NiO, and had the best reducibility and dispersibility. The type of carbonaceous species Cγ, which may cause catalyst deactivation, wasn't found on the Ni-CaO/Al2O3 catalyst after 10h reaction by using TGA techniques.

引用

页码：218 / 222

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