Selective pseudocumene production by xylene methylation

Details Selective pseudocumene production by xylene methylation Selective pseudocumene production by xylene methylation

1998-12-28

2000-12-05

Griffin, Walter D.

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

By condensation of entire molecules or entire hydrocarbyl...

585447, 585467, C07C 266

Patent

active

061569496

ABSTRACT:
There is provided a process for shape selective xylene methylation that involves contacting a feedstream which includes xylene and methanol under alkylation conditions, with a low activity catalyst. Xylene conversions of at least 15% at methanol utilization levels of 25% or greater are achieved by sequential injection of methanol The xylene methylation process has a selectivity for pseudocumene of over 85% and up to 99%, with a pseudocumene:durene ratio of up to 20 or more.

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