己二酸二甲酯加氢制1,6-己二醇催化剂工业侧线研究

采用共沉淀法制备新型Cu基己二酸二甲酯加氢制1,6-己二醇催化剂,在工业侧线试验装置上,考察入口温度、反应压力、氢酯物质的量比和液相空速等工艺条件的影响,完成1 000 h稳定性试验。结果表明,在入口温度210℃、反应压力≥5.0 MPa、空速(0.1~0.2)h~(-1)和氢酯物质的量比≥170条件下,己二酸二甲酯转化率大于99%,1,6-己二醇选择性97%,催化剂性能稳定,显示了良好的工业应用前景。

Industrial side-line test of catalyst for dimethyl adipate hydrogenation to 1,6-Hexanediol

New Cu-based catalyst for hydrogenation of dimethyl adipate to 1,6-hexanediol was prepared by co-precipitation method.Effects of inlet temperature,reaction pressure,mole ratio of H₂ to ester and liquid phase space velocity on catalytic performance were examined on industrial side-line plant for dimethyl adipate hydrogenation.Meanwhile,stability test was carried for 1 000 h.The results showed that dimethyl adipate conversion was higher than 99% and 1,6-HDO selectivity was 97%,respectively,under the operation conditions of inlet temperature 210 ℃,reaction pressure≥5.0 MPa,liquid phase space velocity (0.1~0.2) h^-1 and mole ratio of H₂/ester≥170.The catalyst posed good stability and showed predictable industrial application prospect.