Selective oxidation of propane to acrolein over SiO2 supported Mo-Bi-Te catalysts

PETR 55

Yiming He, heyiming455@hotmail.com1, Ying Wu, ying-wu@zjnu.cn2, Xiaodong Yi1, Weizheng Weng1, and Huilin Wan1. (1) State Key Laboratory for Physical Chemistry of the Solid Surface, Department of Chemistry and Institute of Physical Chemistry, xiamen, 361005, China, (2) Institute of Physical Chemistry, Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces, Zhejiang Normal University, Jinghua, 321004, China
Currently there is worldwide interest in the development of catalytic processes for the production of acrolein from propane, replacing older technologies converting propylene. In this paper, we studied the catalytic performances of Mo-Bi-Te/SiO2 catalysts in the selective oxidation of propane to acrolein. The selectivity to acrolein greatly increased by the addition of tellurium species to the Mo-Bi/SiO2 catalyst. In a series of MoBi0.05Tex/SiO2 catalysts, the catalysts with x=0.05-0.1 exhibited the highest acrolein selectivity at 550 oC. The structure analysis by XRD, XPS and Raman showed the coexistence of Mo5O14-type Te(and Bi) polymolybdate species and molybdenum oxide. The highest acrolein selectivity could be explained by the synergy effect occurred on these two oxides. In addition, the effect of Te on the acid properties was also detected by NH3-TPD and Pyridine adsorption IR spectroscopy. With the Te-content increasing the Brönsted acidity increased.
 

Division of Petroleum Chemistry Poster Session
8:30 AM-10:30 AM, Monday, 11 September 2006 Moscone Center -- Hall D, Poster

Division of Petroleum Chemistry

The 232nd ACS National Meeting, San Francisco, CA, September 10-14, 2006