Alkylation of o-toluidine with methanol over acidic zeolites

Autor:	Bollapragada S. Rao, Rajamanickam Maheswari, R. Anand, S.G. Hegde
Rok vydání:	2003
Předmět:	Process Chemistry and Technology Inorganic chemistry Heterogeneous catalysis Catalysis Product distribution chemistry.chemical_compound chemistry Methanol Toluidine Physical and Theoretical Chemistry Zeolite Selectivity Space velocity
Zdroj:	Journal of Molecular Catalysis A: Chemical. 192:253-262
ISSN:	1381-1169
DOI:	10.1016/s1381-1169(02)00420-x
Popis:	The catalytic property of H-beta zeolite in the methylation of o -toluidine was compared to that of other acidic zeolites, viz. HY, H-MOR, H-ZSM-5 and H-FER. The H-beta catalyst showed higher conversion of o -toluidine, the main product being 2,4-xylidine. The selectivity towards 2,4-dimethylaniline (2,4-xylidine) was about 69% (at 400 °C) over H-beta zeolite and was selective than the other zeolites under study. However, the other isomer (2,6-xylidine), over all zeolites, was formed in very less quantities (>4%). All the reaction parameters, viz. reaction temperature, weight hourly space velocity (WHSV), molar ratio of the reactants and time on stream was found to be profound effect on the conversion and selectivity of the product distribution. A detailed study of these reaction parameters was carried out over H-beta zeolite.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::754f92d8fa2dc92fc57ec90bb4d53f6a https://doi.org/10.1016/s1381-1169(02)00420-x Zobrazit plný text záznamu Full Text from ScienceDirect