1. Sinopec Dalian Research Institute of Petroleum and Petrochemicals, Dalian 116045, China; 2. China Petroleum & Chemical Corporation, Beijing 100728, China
Abstract: 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%.
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