掺镧Ru基催化剂催化顺酐加氢制备γ-丁内酯反应条件研究

摘要

采用沉积沉淀法制备了掺镧Ru基催化剂,用于顺酐催化加氢制备y-丁内酯反应.考察了溶剂、反应时间、温度、氢气压力等条件对顺酐转化率和γ-丁内酯选择性的影响.结果表明,在180℃,氢气压力3.0 MPa的条件下,反应6h,顺酐的转化率达到100％,γ-丁内酯的选择性为81.2％.%The La doped Ru-based catalyst was prepared by deposition-precipitation method. The catalyst was used for the hydrogenation of maleic anhydride to y-butyrolactone. Effects of solvent, reaction time,reaction temperature and hydrogen pressure on the conversion of maleic anhydride and selectivity to 'y-butyrolactone have been investigated. The results indicated that under the conditions of 180 ℃ , PH = 3.0 MPa,reaction time 6 h,the conversion of maleic anhydride attained to 100% and the selectivity to y-butyrolactone was 81. 2% .