Release Time:2019-03-10  Hits:

Indexed by: Journal Article

Date of Publication: 2008-12-15

Journal: CATALYSIS COMMUNICATIONS

Included Journals: SCIE

Volume: 10

Issue: 3

Page Number: 336-340

ISSN: 1566-7367

Key Words: Mesoporous ZSM-5; Desilication; 2-Methylnaphthalene; 2,6-Dimethylnaphthalene; Zr

Abstract: Mesoporous ZSM-5 was prepared by NaOH-treatment of ZSM-5 and examined for selective synthesis of 2,6-dimethylnaphthalene (2,6-DMN). The results showed that mesopores were formed owing to desilication. The catalytic activities and lifetime were significantly enhanced with increasing treatment time. About 37% 2-methylnaphthalene(MN) conversion, compared to 5.3% oil parent ZSM-5, was obtained at 10.25 h on mesoporous ZSM-5 by 8 h NaOH-treatment. It is thought that mesopores in alkaline-treated ZSM-5 result in higher catalytic activities and longer lifetime. Higher 2,6-/2,7-DMN ratio, selectivity and yield of 2,6-DMN were obtained on modified mesoporous ZSM-5 with Zr. (C) 2008 Elsevier B.V. All rights reserved.