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

作　　者：Jianmei Li Jian Liu Liwei Ren Qinglong Liu Zhen Zhao Yongsheng Chen Pengyu Zhu Yuechang Wei Aijun Duan Guiyuan Jiang 

机构地区：[1]State Key Laboratory of Heavy Oil, College of Science, China University of Petroleum [2]EMS Energy Institute and John and Willie Leone Family Department of Energy and Mineral Engineering,The Pennsylvania State University, University Park, PA 16802, USA

出　　处：《Journal of Energy Chemistry》2014年第5期609-616,共8页能源化学（英文版）

基　　金：supported by NSFC(21376261,21173270,21177160);Beijing Natural Science Foundation(2142027);863 Program of China(2013AA065302);the Doctor Select Foundation(20130007110007)

摘　　要：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.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.

关 键 词：selective oxidation of ethane supported oxides catalysts Mo ALDEHYDES SBA-15 

分 类 号：O643.36[理学—物理化学] TQ224.124[理学—化学]