Selective hydrogenation of acetylene on non-thermal plasma derived Pd-based catalysts

PETR 54

Chunkai Shi, chunkai_shi@tamu-commerce.edu, Chemistry Department, Texas A&M University-Commerce, PO Box 3011, Commerce, TX 75429 and Ben W-L. Jang, ben_jang@tamu-commerce.edu, Department of Chemistry, Texas A&M U.-Commerce, PO Box 3011, Commerce, TX 75429-3011.
Pd-based catalysts with Al2O3, SiO2 and TiO2 as either supports or additives have been reported to show good activity and high selectivity for acetylene selective hydrogenation. On the other hand, it was reported that RF non-thermal plasma treatments can effectively enhance the activity and stability of alumina-supported Ni catalyst for hydrogenation reactions. In this study, plasma effects on acetylene selective hydrogenation in the presence of ethylene are studied over three supported Pd catalysts, such as Pd/Al2O3, Pd/SiO2 and Pd/TiO2. It is found that H2-plasma treated Pd/Al2O3 showed both the highest acetylene conversion activity and high ethylene selectivity at low temperature among all catalysts. This suggests that H2 plasma treatment can significantly modify the surface properties of Pd/Al2O3 catalyst for selective hydrogenation of acetylene. It demonstrates that RF non-thermal plasmas not only can modify Ni catalysts but also Pd catalysts for various hydrogenation reactions.
 

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