US EPA

859378 

Journal Article 

Demethylation and isomerization of pseudocumene on aluminosilcates 

Mamedaliev, GM; Topchiev, AV; Vlasova, ND; Anikina, GN 

1961 

1 

Russian Chemical Bulletin
ISSN: 1066-5285
EISSN: 1573-9171 

10 

4 

588 

English 

10.1007/BF00909126 

https://www.scopus.com/inward/record.uri?eid=2-s2.0-34250578897&doi=10.1007%2fBF00909126&partnerID=40&md5=9e645e2bd79a3260cba6bc275632dd1a
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1.The dealkylation of pseudocumene accompanied by the conjugated alkylation of benzene and toluene was investigated at different temperatures and pressures in the presence of aluminosilicates.2.Application of pressures in the range of 510 atm at temperatures of 450480 expedited the reactions mentioned above. As a result of a single treatment of a mixture of pseudocumene with toluene, a yield of xylenes comprising approximately 30% of the catalyzate was obtained.3.In the absence of benzene and toluene, pseudocumene was subjected to dismutation with the formation of a mixture of isomeric xylenes and tetramethylbenzenes.4.Application of vacuum suppressed to a considerable extent the transfer of methyl groups and had the effect of channeling the reaction in the direction of the isomerization of pseudocumene.