The process for preparing 1,6-hexanediol from methyl 6-hydroxyhexanoate is studied in a reactor loaded with copper-based catalyst.The impacts of reaction temperature,reaction pressure,catalyst dosage,and reaction time on the catalytic hydrogenation process are evaluated.Gas chromatography analysis is employed to monitor the reaction process,and the optimal process conditions are obtained as follows:temperature is 200℃,pressure is 7 MPa,catalyst dosage is 8%,and reaction time is 6 h.Analysis methods such as nuclear magnetic resonance hydrogen spectroscopy and infrared spectroscopy are employed to confirm the structure of the product again.It is found that a new process is obtained with a conversion rate of 99%for methyl 6-hydroxyhexanoate and a selectivity of 86%for 1,6-hexanediol.
NETL
NSTL
万方数据
