采用自主知识产权并已工业化的铜基脱氢催化剂研究了2,3-丁二醇(BDO)选择性脱氢生产3-羟基丁酮(3H2B)反应工艺,分别考察了温度、空速、氢醇摩尔比等条件对反应的影响。结果表明,在临氢工况下,反应压力为常压~0.2 MPa、温度为250~270℃、氢醇摩尔比为3∶1、LHSV在2.0~9.0 h^-1时,2,3-丁二醇转化率≥56%,3H2B选择性≥97%;在非临氢工况下,反应压力为常压~0.2 MPa、温度为250~270℃、LHSV在2.0~5.0 h^-1时,BDO转化率≥60%,3H2B选择性≥96.0%。催化剂经1600h稳定性实验后,催化性能保持稳定,BDO转化率≥65%,3H2B选择性≥96%。

A commercial copper-based dehydrogenation catalyst with independent intellectual property rights is used to study the selective dehydrogenation of 2,3-butanediol (BDO) to produce 3-hydroxybutanone (3H2B).The effects of temperature,space velocity and the molar ratio of hydrogen to BDO respectively on the reaction are investigated.The results show that the conversion rate of BDO is not less than 56% and the selectivity of 3H2B is not less than 97% when the reaction is performed under the condition of hydrogen exposure,the pressure is 0.2 MPa,the temperature is 250-270℃,the molar ratio of H₂ to BDO is 3:1,and LHSV is 2.0-9.0 h^-1.The conversion rate of BDO is not less than 60% and the selectivity of 3H2B is not less than 96.0% when the reaction is performed under the condition of without hydrogen exposure,the pressure is 0.2 MPa,the temperature is 250-270℃,and LHSV is 2.0-5.0 h^-1.After experiencing 1 600 hours of stability test,the catalytic performance of the catalyst remains stable,the BDO conversion rate is not less than 65%,and the 3H2B selectivity is not less than 96%.

周峰(1982-),男,博士,高级工程师,研究方向为生物质资源化利用,zhoufeng.fshy@sinopec.com