Chinese Academy of Sciences

Yuangen Yao

Guocong Guo

Zhongning Xu

Mingsheng Wang

Qingsong Chen

Zhiqiao Wang

Siyan Peng

A process for vapor-phase carbonylation of methanol to methyl formate, whereby a feed gas containing methanol, carbon monoxide, hydrogen and oxygen is passed through a reactor loaded with a supported nano-scaled platinum group metal heterogeneous catalyst to produce methyl formate by a vapor-phase carbonylation reaction, under reaction conditions with a space velocity of 500-5000 h, a temperature of 50-150&#xb0; C. and a pressure of 0.01-2 MPa. Supported nano-scaled platinum group metal heterogeneous catalysts are prepared via ultrasonic dispersion and calcination. Methyl formate is produced and isolated under relatively mild conditions.

Process for vapor-phase methanol carbonylation to methyl formate, a catalyst used in the process and a method for preparing the catalyst

The invention belongs to the technical field of preparing oxalate in coal to ethylene glycol, aiming at providing a preparation process for nanocatalysts with (111) crystal facet exposed and a process for vapor-phase CO oxidative coupling to oxalate. The nanocatalysts with (111) crystal facet exposed comprise carrier, active component and promoter on the carrier, wherein, in term of the weight of the carrier, the active component accounts for 0.05-2% of the weight of the carrier, the weight percentage of metal elements in the promoter is 20% or less. The nanocatalysts with (111) crystal facet exposed are prepared by the nanometals in situ supporting process. The preparation process is simple in procedure, has low energy consumption and can precisely control the size and exposed crystal facet of the active component nanoparticles. The obtained nanocatalysts with (111) crystal facet exposed are highly active for vapor-phase CO oxidative coupling to oxalate at a lower loading of noble metal.

Preparation process of nanocatalysts with (111) crystal facet exposed and process for vapour-phase CO oxidative coupling to oxalate

Growing community of inventors

Fuzhou, China

Yuangen Yao