Effect of crystal size on the catalytic performance of HZSM-5 Zeolite in the methanol to aromatics reaction. (18th June 2018)

• Record Type: Journal Article
• Authors: Zhang, Yongkun; Qu, Yixin; Wang, Jidong
• Is Part Of: Petroleum science and technology. Volume 36:Number 12(2018)
• Page Start: 898
• Page End: 903
• Publication Date: 2018-06-18
• Subjects: crystal size -- HZSM-5 zeolites -- lifetime -- methanol to aromatics -- product distribution; Liquid fuels -- Periodicals; Petroleum -- Periodicals; 665.505
• DOI: 10.1080/10916466.2018.1451889
• Languages: English
• ISSNs: 1091-6466

Abstract

ABSTRACT: The effect of crystal size on the lifetime and product distribution of HZSM-5 catalysts in methanol to aromatics reaction has been investigated. Increasing crystal size results in a reduction of the lifetime. Though the initial selectivity of total aromatics is approximately the same, larger crystal size favors the dealkylation reactions of polymethylbenzenes, cracking of C5 –C9 non-aromatics and hydrogen transfer reaction, leading to different product distribution. The longer lifetime of HZSM-5 with smaller crystal size can be attributed to its larger specific surface area, pore volume and diameter and short residence time of the reaction products in the zeolite pores.