Toluene methylation process

Details Toluene methylation process Toluene methylation process

2006-06-13

2006-06-13

Wood, Elizabeth D. (Department: 1755)

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

By condensation of entire molecules or entire hydrocarbyl...

Reexamination Certificate

active

07060864

ABSTRACT:
A method of preparing a xylene product is carried out by providing a reactor containing a non-steamed, phosphorus-treated ZSM-5-type zeolite catalyst. The catalyst is contacted with a toluene/methanol feed and a cofeed of hydrogen under reactor conditions suitable for the methylation of toluene. Water is introducing into the reactor during the methylation reaction under conditions that provide substantially no structural aluminum loss of the catalyst from such introduction of water.

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