PROCESS FOR PREPARING AROMATIC HYDROCARBONS

摘要

Process for preparing aromatics from carbon monoxide and hydrogen. A mixture whose H2/CO molar ratio is less than 1.0, is contacted with a trifunctional catalyst containing at least one metal catalyzing the conversion of a H2/CO mixture into hydrocarbons and/or oxygen- containing hydrocarbons, at least one metal catalyzing the water gas shift reaction and a crystalline aluminosilicate zeolite having an SiO2/Al2O3 molar ratio of at least 12 and a constraint index between 1 and 12. The "constraint index" is an empirical value based on the relative sorption by the zeolite of n-hexane and 3-methylpentane in a defined experimental procedure.