CuO-Bi_2O_3催化合成1,4-丁炔二醇

Synthesis of 1,4-butynediol with CuO-Bi_2O_3 catalyst

以自制孔雀石为前驱体进行焙烧得到CuO-Bi2O3催化剂。考察温度对前驱体制备的影响,通过TG分析得出较佳的焙烧温度。借助XRD、SEM、BET等分析手段对催化剂颗粒的形貌和比表面积进行表征。以甲醛乙炔化反应合成丁炔二醇为活性评价实验,考察Bi质量分数、催化剂用量、反应温度、反应时间等因素对反应的影响。实验结果表明,当Bi质量分数为20%,催化剂用量为8 g/(100 mL甲醛),反应温度为90℃,反应时间为12 h时,BD的收率可达89.5%。

CuO-Bi2O3 catalyst is prepared by self-made malachite roasting. The effect of preparation temperature on precursor is studied. TG analysis is performed to get the suitable calcination temperature. The morphology and specific surface area of the catalyst particles are characterized by XRD, SEM and BET techniques. The Bi contents, catalyst amounts, reaction temperature and time on the production of 1,4-butynediol are investigated. The results show that the optimum reaction conditions are as follows：20% mass fraction of Bi content,8 g/（ 100 mL HCHO） of eatalyst,90℃ of reaction temperature and 12 hours of reaction time. The yield of 1,4-butynediol can reach 89. 5% under the optimal conditions.