On the plasma-enhanced acidity of zeolites

CATL 26

Qing Xia, Department of Chemical Engineering, Tianjin University, 92 Wei Jin Road, Tianjin, 300072, China, Kai-lu Yu, State Key Laboratory of C1 Chemistry and Technology, Tianjin University, 92 Weijin Road, Tianjin, 300072, and Chang-jun Liu, Tianjin University-ABB Plasma Greenhouse Gas Chemistry Laboratory, State Key Laboratory of C1 Chemical Technology, P.O. Box 796666, Tianjin University, Tianjin, 300072, China.
In this work, we report a simple and novel way to increase the acidity of zeolites without using chemicals. The Infrared (IR) Analysis shows such preparation leads to a significant enhancement in Bronsted acidity that plays an important role in the methane aromatization. The enhanced Bronsted acidity induces a significant increase in the conversion of methane for methane aromatization without leading to more carbon deposition. Because of the importance of acidity of zeolites in catalyzing a great number of hydrocarbon transformation reactions, the discharge plasma enhanced acidic properties of zeolites will lead to many other applications either in petrochemical or in fine chemical industries.