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Citation: HUANG Chuan-Jing, ZHENG Xiao-Ming, FEI Jin-Hua. Reforming of Methane with Carbon Dioxide to Syngas over Ni-Co Bimetallic Catalysts[J]. Chinese Journal of Applied Chemistry, ;2001, 18(9): 741-745. shu

Reforming of Methane with Carbon Dioxide to Syngas over Ni-Co Bimetallic Catalysts

1.
a Institute of Catalysis, Zhejiang University, Hangzhou 310028;
2.
b Department of Chemistry, Huaibei Coal Teachers College, Huaibei

Received Date: 30 December 2000
Available Online: 26 March 2001
Fund Project: 浙江省自然科学基金(ZD9903) (ZD9903)安徽省重点科研项目(00021088)资助课题 (00021088)

Reforming of CH₄ with CO₂ to give syngas over Ni/SiO₂, Co/SiO₂ and Ni Co/SiO₂ catalysts has been studied by activity evaluation using TPO, TPR and CO₂-TPD techniques.It is found that the catalysts without pre reduction decreased in their activities following the order of Ni Co/SiO₂~Ni/SiO₂>>Co/SiO₂, and Ni Co/SiO₂ was much less sensitive to coking and more stable than Ni/SiO₂ catalyst.The CH₄ conversion over Ni Co/SiO₂ catalyst increased with time in stream during the first 1 h period of reaction and then remained invariable with time in stream for 9 h, while over Ni/SiO₂ catalyst the CH₄ conversion decreased continuously with reaction time and the reaction had to be stopped because of the reactor becoming completely plugged by carbon deposits after 6 h.In the case of Ni Co/SiO₂ catalyst, Ni promoted the reduction of Co species, which was found beneficial to CO₂ adsorption and suppression of less active carbon deposition.This is considered to be related to the excellent activity, stability and anti coking property of the bimetallic catalyst.
- CH₄/CO₂ reforming to syngas,
- N-Co/SiO₂ catalyst,
- carbon deposition
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