The invention relates to a preparation method of a ternary
copper powder catalyst for synthesis of methylchlorosilane. The method is as follows: preparing a porous CuO
metal micro-cluster body with a multilevel
dandelion structure by a hydrothermal method, reducing the CuO with H2 to completely obtain a Cu
metal micro-cluster body, and partially oxidizing to obtain a Cu2O and Cu mixture
metal micro-cluster body; and finally, mixing the CuO metal micro-cluster body, the Cu metal micro-cluster body and the Cu2O and Cu mixture metal micro-cluster body in ratio to obtain the ternary
copper powder catalyst. The ternary
copper powder catalyst prepared by the method has a specific surface area up to 10-60m<2> / g, and has a
hierarchical porous structure, in the reaction process of direct synthesis of the methylchlorosilane, contact interface between a reaction gas and
solid silica fume can be increased, the catalytic activity of the catalyst can be improved, especially the three component ratio can be accurately controlled, by
collocation of a little of a cocatalyst
promoter, the selectivity of dimethyldichlorosilance in the product can reach a high level.