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

被引：10
|
作者：
Li, Jianmei [1 ]
Liu, Jian [1 ]
Ren, Liwei [1 ]
Liu, Qinglong [1 ]
Zhao, Zhen [1 ]
Chen, Yongsheng [2 ,3 ]
Zhu, Pengyu [2 ,3 ]
Wei, Yuechang [1 ]
Duan, Aijun [1 ]
Jiang, Guiyuan [1 ]
机构：
[1] China Univ Petr, Coll Sci, State Key Lab Heavy Oil, Beijing 102249, Peoples R China
[2] Penn State Univ, EMS Energy Inst, University Pk, PA 16802 USA
[3] Penn State Univ, John & Willie Leone Family Dept Energy & Mineral, University Pk, PA 16802 USA
来源：
JOURNAL OF ENERGY CHEMISTRY | 2014年 / 23卷 / 05期
基金：
北京市自然科学基金; 美国国家科学基金会;
关键词：
selective oxidation of ethane; supported oxides; catalysts; Mo; aldehydes; SBA-15; MESOPOROUS SILICA; OXIDE CATALYSTS; ACETALDEHYDE; DEHYDROGENATION; RAMAN; ETHYLENE;
D O I：
10.1016/S2095-4956(14)60191-1
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
SBA-15 supported Mo catalysts (Mo-y/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 N-2-adsorption-desorption, XRD, TEM, UV-Vis, Raman, XANES and H-2-TPR. The results showed that a trace amount of MoO3 was produced on high Mo content samples. Turn-over frequency (TOF) and product selectivity are dependent on the molybdenum content. Both Mo-0.75/SBA-15 and Mo-1.75/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 degrees C, the maximum yield of aldehydes reached 4.2% over Mo-0.75/SBA-15 catalyst. The improvement of the activity and selectivity was related with the state of MoOx species.
引用
收藏
页码：609 / 616
页数：8
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