Study on RE-Modified Mordenite Catalysts for Amination Reaction

摘要

The effects of RE-modified mordenite catalysts on the activity and selectivity of ami- nation reaction at atmospheric pressure in a fixed bed reactor were studied. The experimental re- sult shows that the Y-modified mordenite catalyst exhibits very good activity and selectivity to dimethylamine(DMA). The results of the catalyst characterization demonstrate that the rare earth modification of mordenite mainly causes the changes of B acidic sites in mordenite. The crystal structure and the Si/Al ration on the surface of mordenite basically remain unchanged after morden- ite is modified by rare earth elements. Rare earth modification improves the thermal stability and prolongs the life of the catalyst.