Effect of Promoter MgO on CeO2/Al2O3 Oxygen Carrier Used in Partial Oxidation of Methane to Syngas

liu mingchun; Wang Hua; Wei Yonggang; Li Kongzhai

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Effect of Promoter MgO on CeO2/Al2O3 Oxygen Carrier Used in Partial Oxidation of Methane to Syngas

liu mingchun,Wang Hua *,Wei Yonggang #,Li Kongzhai

Kunming University of Science and Technology

*Correspondence author

#Submitted by

Subject:

Funding: Nature Science , Nature Science , Natural Science ,Natural Science ,High School （No.50574046,50164002,90610035,2004E0058Q,20040674005）

Opened online:21 December 2007

Accepted by: none

Citation: liu mingchun,Wang Hua,Wei Yonggang.Effect of Promoter MgO on CeO2/Al2O3 Oxygen Carrier Used in Partial Oxidation of Methane to Syngas[OL]. [21 December 2007] http://en.paper.edu.cn/en_releasepaper/content/17224

Promoter MgO on 10％CeO2/Al2O3 oxygen carrier was investigated for direct partial oxidation of methane to syngas in molten salt. The contents of 0.5%, 1%, 2%, 3% and 4%MgO on the 10％CeO2/ Al2O3 oxygen carriers in experiments were prepared at the temperature of 750℃, respectively. The methane conversion, H2 and CO selectivity were measured on these prepared oxygen carriers at different reaction temperatures. The results showed that the 3% MgO on 10％CeO2/Al2O3 had the best activity, and the CH4 conversion and CO selectivity reached 92.58% and 87.64% at 875℃, respectively. The effect of different preparation temperatures on 3% MgO as promoter on 10％CeO2/Al2O3 oxygen carrier was investigated. The results of BET indicated that 3％ MgO as promoter had the largest surface area at 750℃, and the results also indicated that （and）the higher calcined temperature had a negative effect on oxygen carrier activity.

Keywords:methane; partial oxidation; syngas; molten salt; rare earths

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