The invention relates to monolithic catalyst directly producing
dimethyl ether with synthetic gas, and the preparation method thereof. The monolithic catalyst takes monolithic
honeycomb cordierite as the matrix, and takes CuO-ZnO-MxOy / HZSM-5 as
active components, MxOy expresses auxiliary agent of the
active components, and M can be selected from Al, Zr, B, Ce or La; by quality, the CuO-ZnO-MxOy has 12 to 30 parts, the HZSM-5 has 5 to 16 parts, and the
cordierite has 60 to 80 parts. The preparation method of the monolithic catalyst includes that a
coating method and a uniform co-
precipitation method are utilized. The preparation method has the
coating method that dilute
nitric acid, surface
active agent, deionized water, etc are added into the CuO-ZnO-MxOy obtained in the co-
precipitation method or the CuO-ZnO-MxOy-HZSM-5 obtained in the co-
precipitation method for the ball milling; after being pulped, the mixture is coated on HZSM-5 /
cordierite or the cordierite; and after being dried and roasted, a
dimethyl ether monolithic catalyst finished product is obtained. Prepared in the method provided by the invention, the monolithic catalyst directly producing the
dimethyl ether with the synthetic gas has good catalytic activity and stability.