SYNTHESIS OF 2,6-DIMETHYLNAPHTHALENE OVER SAPO-11, SAPO-5 AND MORDENITE MOLECULAR SIEVES
Abstract Shape-selective methylation of naphthalene over SAPO-11, SAPO-5 and mordenite molecular sieves were carried out in a fixed-bed flow reactor under atmospheric pressure. Methanol and mesitylene were used as methylation and solvent agents. The experiment results showed that SAPO-11 exhibited higher stability, higher selectivity of 2,6-dimethylnaphthalene (2,6-DMN) and higher 2,6-/2,7-DMN ratio than SAPO-5 and mordenite molecular sieves. The catalytic performances for the methylation of naphthalene were mainly related to the pore structure of the catalysts. The comparison of the spent SAPO- 11 with fresh SAPO-11 suggested that structure collapse of the SAPO-11 by dealumination was occurred during the methylation of naphthalene with methanol, which may have been caused by high temperature steam from water produced in the reaction or by high temperature methanol vapor.
Main Authors: | Wang,Xiaoxiao, Liu,Zhenmin, Wei,Xianxian, Guo,Fang, Li,Peng, Guo,Shaoqing |
---|---|
Format: | Digital revista |
Language: | Portuguese |
Published: |
Brazilian Society of Chemical Engineering
2017
|
Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322017000100295 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Similar Items
-
Optimization of the synthesis of SAPO-11 for the methylation of naphthalene with methanol by varying templates and template content
by: Wang,Xiaoxiao, et al.
Published: (2013) -
Boron Incorporation by Hydrothermal Synthesis Into SAPO-5 and SAPO-11 Molecular Sieves
by: Carvalho,Rosângela Pedrosa, et al.
Published: (2023) -
Industrial Kaolin Waste as Raw Material in the Synthesis of the SAPO-34 Molecular Sieve
by: Pinheiro,Darllan do Rosario, et al.
Published: (2020) -
[sapo].
by: 73870 Grigera, J.R. Universidad Nacional de La Plata (Argentina), et al.
Published: (1975) -
[sapo].
by: 126005 Uchitel, O.D. Universidad de Buenos Aires (Argentina))
Published: (1975)