TITLE:
Improved Stability and Shape Selectivity of 2,6-Dimethylnaphthalene by Methylation of Naphthalene with Methanol on Modified Zeolites
AUTHORS:
Ye Zhang, Junpeng Feng, Zhanjun Lyu, Xuekuan Li
KEYWORDS:
Naphthalene Methylation; 2, 6-Dimethylnaphthalene; Shape-Selective; Stability; PdO Modified Zeolites
JOURNAL NAME:
Modern Research in Catalysis,
Vol.3 No.2,
March
18,
2014
ABSTRACT: 2,6-Dimethylnaphthalene (2,6-DMN) is a key intermediate for polyethylene naphthalate synthesis. The selective synthesis of 2,6-DMN from naphthalene and methanol was carried out over different zeolites (HZSM-5, Hβ, HUSY and SAPO-11) modified by 0.1wt% PdO under atmospheric pressure. Among the adopted zeolites, SAPO-11 exhibits exceptional shape-selectivity and stability to synthesize 2,6-dimethylnaphthalene from methylation of naphthalene, due to the special pore structure of SAPO-11 which inosculated better with 2,6-dimethylnaphthalene than with 2,7-dimethylnaphthalene.