Petroleum Processing and Petrochemicals ›› 2015, Vol. 46 ›› Issue (4): 46-50.
• muci • Previous Articles Next Articles
Received:
Revised:
Online:
Published:
Contact:
Abstract: Fine grain NaZSM-5 zeolites with wide range of Si/Al ratio were prepared by using proper amount of template, tetraethyl orthosilicate(TEOS)and water. The effect of preparation parameters on the performance of the catalysts containing ZSM-5 was studied by XRD,SEM,NH3-TPD,BET techniques and MTP test. The optimal conditions for synthesis of ZSM-5 zeolite are: n(TPA+)/n(SiO2) of 0.16-0.18,H2O/SiO2 mass ration of 14-16, Si/Al ratio of 500 and crystallization temperature of 130~150 ℃. The catalysts containing ZSM-5 were obtained by extrusion, acid exchange and calcination, and evaluated for MTP. The results indicate that the catalyst containing ZSM-5 with Si/Al ratio of 500 has a good performance of MTP. The methanol conversion is higher than 99%, and the propylene selectivity can be maintained at about 45%.
0 / / Recommend
Add to citation manager EndNote|Ris|BibTeX
URL: http://www.sylzyhg.com/EN/
http://www.sylzyhg.com/EN/Y2015/V46/I4/46