Methylation of toluene to para-xylene catalyzed by crystalline s

Details Methylation of toluene to para-xylene catalyzed by crystalline s Methylation of toluene to para-xylene catalyzed by crystalline s

1979-04-20

1984-04-24

Davis, Curtis R.

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

By condensation of entire molecules or entire hydrocarbyl...

585466, C07C 268

Patent

active

044449895

ABSTRACT:
An improved catalytic process for making para-xylene from toluene and a methylating agent employing the described crystalline silica as catalyst, said catalyst optionally promoted by one or more compounds of arsenic, phosphorus, magnesium, boron, antimony and amorphous silica. Preferred promoters are boron compounds, antimony compounds, and amorphous silica.

REFERENCES:
patent: 4002698 (1977-01-01), Kaeding
patent: 4051191 (1977-09-01), Ward
patent: 4073865 (1978-02-01), Flanigen et al.

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