1,4-丁二醇制备γ-丁内酯脱氢工艺  

Dehydrogenation process of 1,4-butanediol to γ-butyrolactone

作　　者：吴慧玲 孟令臣 张思琦 李浩东 刘博帆 袁胜华 WU Huiling;MENG Lingchen;ZHANG Siqi;LI Haodong;LIU Bofan;YUAN Shenghua(Sinopec(Dalian)Petrochemical Research Institute Co.,Ltd.,Dalian 116041,China)

机构地区：[1]中石化(大连)石油化工研究院有限公司,辽宁大连116041

出　　处：《石油化工》2025年第3期297-303,共7页Petrochemical Technology

基　　金：中国石化青年博士支持计划课题(224084)。

摘　　要：采用自主知识产权的Cu基脱氢催化剂,对1,4-丁二醇(BDO)进行选择性脱氢反应生成γ-丁内酯(GBL),通过GC-MS、XRD、SEM、N_(2)O化学吸附等方法研究了可能的反应路径及催化剂物化性质,考察了反应条件对催化剂催化BDO脱氢反应性能的影响。实验结果表明,BDO脱氢反应产物较多,最佳的反应条件为:N_(2)气氛、220℃、LHSV为1.5 h^(-1),在该条件下可实现BDO转化率不小于99.9%,GBL收率为98.8%。反应448 h后,催化剂性能仍保持稳定,且反应前后催化剂晶型结构一致、微观形貌相近且Cu粒子无明显变化。该Cu基脱氢催化剂具有优异的脱氢反应性能及稳定性,具有较高的市场竞争力。γ-butyrolactone(GBL)was synthesized through the selective dehydrogenation process of 1,4-butanediol(BDO)using a Cu-based dehydrogenation catalyst with proprietary intellectual property rights.A possible reaction pathway and the physicochemical properties of the catalyst were investigated through GC-MS,XRD,SEM,N_(2)O chemisorption,et al.The effect of reaction conditions on the catalytic performance of BDO dehydrogenation was also examined.The results indicate that multiple products are generated in the BDO dehydrogenation process.Under an N_(2) atmosphere at 220℃ and a space velocity of 1.5 h^(-1),the reaction is optimal with a BDO conversion rate of over 99.9% and a GBL selectivity of 98.8%.After 448 h,the performance of the catalyst remains stable.Furthermore,the used catalyst exhibits nearly identical crystal structure as well as similar microstructure compared to the fresh catalyst.There is no obvious growth in Cu particle size observed.The Cu-based dehydrogenation catalyst has excellent and stable dehydrogenation performance with high market competitiveness.

关 键 词：1 4-丁二醇 Γ-丁内酯 脱氢 Cu基催化剂 

分 类 号：TQ42[化学工程]