Selective oxidation of ethane to aldehydes over SBA- 15 supported molybdenum catalyst

SBA-15 supported Mo catalysts （Moy/SBA-15） were prepared by an ultrasonic assisted incipient-wetness impregnation method. The physical and chemical properties of the catalysts were characterized by means of N2-adsorption-desorption, XRD, TEM, UV-Vis, Raman, XANES and H2-TPR. The results showed that...

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Bibliographic Details
Published in:Journal of energy chemistry 2014-09, Vol.23 (5), p.609-616
Main Authors: Li, Jianmei, Liu, Jian, Ren, Liwei, Liu, Qinglong, Zhao, Zhen, Chen, Yongsheng, Zhu, Pengyu, Wei, Yuechang, Duan, Aijun, Jiang, Guiyuan
Format: Article
Language:English
Subjects:
aldehydes
Applied sciences
catalysts
Energy
Exact sciences and technology
Fuel processing. Carbochemistry and petrochemistry
Fuels
Gas processing
SBA-15
selective oxidation of ethane
supported oxides
XANES
乙烷
乙醛
催化活性
化学性质
选择性氧化
钼催化剂
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Summary:SBA-15 supported Mo catalysts （Moy/SBA-15） were prepared by an ultrasonic assisted incipient-wetness impregnation method. The physical and chemical properties of the catalysts were characterized by means of N2-adsorption-desorption, XRD, TEM, UV-Vis, Raman, XANES and H2-TPR. The results showed that a trace amount of MoO3 was produced on high Mo content samples. Tum-over frequency （TOF） and product selectivity are dependent on the molybdenum content. Both Mo0.75/SBA-15 and Mo1.75/SBA-15 catalysts give the higher catalytic activity and the selectivity to the total aldehydes for the selective oxidation of C2H6. At the reaction temperature of 625℃, the maximum yield of aldehydes reached 4.2% over Mo0.75/SBA-15 catalyst. The improvement of the activity and selectivity was related with the state of MoOx species.
ISSN:2095-4956
DOI:10.1016/S2095-4956(14)60191-1