The catalytic conversion of alkali metal carbonate (K2CO3) catalyst supported on perovskite oxide was carefully examined as an effective catalyst for low-temperature catalytic gasification of lignite. It showed much higher activity than K2CO3 alone as well as K2CO3 supported on γ-alumina under gasification conditions below 800°C. Furthermore, catalyzed syngas had higher H2 and lower CO2 ratios than non-catalyzed syngas. Promisingly, there was also much less tar formation, less than 50wt.% compared to non-catalyzed gasification. Also, less loss of K2CO3 and no coke formation on the catalyst surface were confirmed, comparing to the catalytic gasification with K2CO3 supported on γ-alumina.
All Science Journal Classification (ASJC) codes
- Chemical Engineering(all)