A PROCESS FOR VAPOR-PHASE METHANOL CARBONYLATION TO METHYL FORMATE, A CATALYST USED IN THE PROCESS AND A METHOD FOR PREPARING THE CATALYST

摘要

A process for vapor-phase methanol carbonylation to methyl formate, a supported nano-scaled platinum group metal heterogeneous catalyst used in said process and a method for preparing said catalyst are disclosed. A feed gas containing methanol, carbon monoxide, hydrogen and oxygen is passed through a reactor loaded with supported nano-scaled platinum group metal heterogeneous catalyst to produce methyl formate by vapor-phase carbonylation reaction, in the reaction conditions with a space velocity of 500-5000h-1, a temperature of 50-150°C and a pressure of 0.01-2MPa. The active component of the supported nano-scaled platinum group metal heterogeneous catalyst is platinum group metal with a particle size of 0.5-10nm. The process and catalyst solve the problems in present industrial technology, such as high requirement for the purity of raw materials, severe corrosion of the equipment by catalyst, difficult separation of catalyst from product, high reaction pressure, difficult operation and the like, and provide a novel technical way to produce methyl formate.