非贵金属催化剂用于2,2,4,4-四甲基-1,3-环丁二酮加氢性能的研究
樊志鹏 , 郭鲁玉 , 张世鹏 , 靳海波 , 马磊
现代化工 ›› 2026, Vol. 46 ›› Issue (6) : 201 -207.
非贵金属催化剂用于2,2,4,4-四甲基-1,3-环丁二酮加氢性能的研究
Non-noble metal catalysts for the hydrogenation of 2,2,4,4-tetramethyl-1,3-cyclobutanedione
加氢反应是化工生产中的关键过程,其中不饱和羰基化合物的选择性加氢已成为绿色化学与精细化工领域的重要研究方向。2,2,4,4-四甲基-1,3-环丁二醇(TMCD)作为一种重要中间体,广泛用于合成性能优异的聚酯材料。目前TMCD主要通过2,2,4,4-四甲基-1,3-环丁二酮(TMCB)的催化加氢制得,因此开发高效催化剂成为该领域的重点。针对贵金属催化剂成本较高的问题,采用分步沉淀法制备了Cu-Zn-Al非贵金属催化剂,系统探究了金属摩尔比对催化剂结构及其加氢性能的影响,并优化了反应温度、压力和时间等工艺参数。实验结果表明,在Cu∶Zn∶Al摩尔比为15∶7∶1、反应温度140℃、氢气压力5 MPa、反应时间0.5 h的条件下,TMCB转化率可达99.83%,TMCD选择性达93.49%。
Hydrogenation is a crucial process in chemical production,with selective hydrogenation of unsaturated carbonyl compounds being an important research direction in the fields of green chemistry and fine chemicals.2,2,4,4-Tetramethyl-1,3-cyclobutanediol (TMCD) is a significant intermediate widely used in the synthesis of polyester materials with excellent properties.Currently,TMCD is primarily produced through the catalytic hydrogenation of 2,2,4,4-tetramethyl-1,3-cyclobutanedione (TMCB),making the development of high-efficiency catalysts a key focus in this area.Addressing the high cost of noble metal catalysts,this study prepared a non-noble Cu-Zn-Al catalyst using the stepwise precipitation method.The effects of the metal molar ratios on the catalyst structure and its hydrogenation performance were systematically investigated,and process parameters such as reaction temperature,hydrogen pressure,and time were optimized.The experimental results show that under the conditions of a Cu∶Zn∶Al molar ratio of 15∶7∶1,a reaction temperature of 140℃,a hydrogen pressure of 5 MPa,and a reaction time of 0.5 h,the conversion of TMCB reached 99.83%,with a TMCD selectivity of 93.49%.
2,2,4,4-四甲基-1,3-环丁二醇 / Cu-Zn-Al非贵金属催化剂 / 选择性加氢 / 摩尔比
2,2,4,4-tetramethyl-1,3-cyclobutanediol / Cu-Zn-Al non-noble metal catalyst / selective hydrogenation / molar ratio
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