CATALYST DEVELOPMENT FOR THE SELECTIVE METHYLATION OF CATECHOL

Authors
PORCHET S KIWIMINSKER L DOEPPER R RENKEN A
Citation
S. Porchet et al., CATALYST DEVELOPMENT FOR THE SELECTIVE METHYLATION OF CATECHOL, Chemical Engineering Science, 51(11), 1996, pp. 2933-2938
Citations number
9
Categorie Soggetti
Engineering, Chemical
Journal title
Chemical Engineering Science → ACNP
ISSN journal
00092509
Volume
51
Issue
11
Year of publication
1996
Pages
2933 - 2938
Database
ISI
SICI code
0009-2509(1996)51:11<2933:CDFTSM>2.0.ZU;2-0
Abstract
Gas-phase alkylation of catechol with methanol on gamma-alumina and mo dified gamma-alumina catalysts is studied experimentally. By limiting the conversion to X < 0.3, the formation of polymethylated species can be avoided and only the three isomers guaiacol, 3-methylcatechol and 4-methylcatechol are observed. Optimising the catalyst composition and the reaction conditions, a selectivity of 0.75 for the industrially m ost valuable product 3-methylcatechol can be obtained.