利用浸渍法及固相研磨法制备了以硅藻土为载体的铜铋基催化剂，并在常压进行炔醛化反应合成1，4-丁炔二醇。对制备的催化剂进行XRD、H₂-TPR、SEM、TEM及氮气低温吸附脱附等表征分析。结果表明，固相研磨法制备的铜铋基催化剂拥有最好的催化活性，常压反应7 h甲醛的转化率为70%，1，4-丁炔二醇的选择性为86%，与商业催化剂的活性相当。这主要归因于该催化剂比表面积较大、氧化铜颗粒较小（12 nm），氧化铜能够在硅藻土表面及孔洞内较均匀分散，具有较多的活性中心。

Cu-Bi based catalysts loaded on kieselguhr are prepared by impregnation and solid grinding methods,respectively,and applied in the ethynylation of formaldehyde for synthesis of 1,4-butynediol.These catalyst samples are characterized by XRD,H₂-TPR,SEM,TEM,N₂ adsorption/desorption.It is found that Cu-Bi based catalyst prepared by solid grinding method exhibits the higher catalytic activity,over which the conversion of formaldehyde can reach 70% and the selectivity of 1,4-butynediol achieves 86% after the reaction has performed for 7 h under atmospheric pressure.The performance is equivalent to that of commercial catalyst.It is attributed to the catalysts with the bigger surface area,smaller CuO particles size and CuO well dispersed in kieselguhr,forming more active centers.

陈可祥(1999-),男,本科,研究方向为催化剂的制备,chenkx2020@163.com