In this work, we report a simple and inexpensive approach to synthesize effective multicomponent Cu–Cu₂O–CuO catalysts for the Rochow process from industrial waste contact masses (WCMs). WCMs from the organosilane industry were treated with acid followed by reduction with metallic iron powder. The obtained copper powder was then subjected to controlled oxidation in air at different temperatures, followed by ball milling. The orthogonal array approach was applied to optimize this process, and the stirring speed and pH were found to significantly affect the leaching ratio and copper yield, respectively. When used for the Rochow process, the optimized ternary Cu–Cu₂O–CuO catalyst greatly enhanced the dimethyldichlorosilane selectivity and Si conversion compared with Cu–Cu₂O–CuO catalysts prepared without ball milling, bare Cu catalysts, and Cu–Cu₂O–CuO catalysts with different compositions. This could be attributed to their small particle size and the strong synergistic effect among the multiple components in the catalyst with the optimized composition.

在这项工作中，我们报告了一种简单而廉价的方法，可以从工业废物接触物料（WCM）合成用于Rochow工艺的有效多组分Cu–Cu ₂ O–CuO催化剂。有机硅烷工业的WCM用酸处理，然后用金属铁粉还原。然后将获得的铜粉在空气中在不同温度下进行受控氧化，然后进行球磨。应用正交阵列法优化了该工艺，发现搅拌速度和pH值分别显着影响浸出率和铜收率。当用于Rochow工艺时，与Cu–Cu ₂相比，优化的三元Cu–Cu ₂ O–CuO三元催化剂大大提高了二甲基二氯硅烷的选择性和Si转化率无需球磨而制备的O–CuO催化剂，裸露的Cu催化剂和具有不同组成的Cu–Cu ₂ O–CuO催化剂。这可以归因于它们的小粒径和具有优化组成的催化剂中多种组分之间的强协同作用。