燃料化学学报2017，Vol.45Issue(1)：48-54,7.
碱催化促进Ni-W/β分子筛催化剂氢解纤维素产1,2-丙二醇的研究
Study on the synthesis of propylene glycol through cellulose hydrogenation using alkaline promoted Ni-W/β-zeolite catalysts
摘要
Abstract
A series of Ni-W/β zeolite catalysts were prepared via incipient impregnation method in order to improve the yield of 1,2-propylene glycol (1,2-PG) in the alcohol products of cellulose hydrogenation. Under the reaction conditions of 240℃ and 6. 0 MPa H2 for 30 min, the complete conversion of cellulose was obtained and the yields of 1,2 propylene glycol and ethylene glycol ( EG) were 19. 3% and 45. 3%, respectively. Different from other supports, the selectivity of 1,2-PG was highly improved when β zeolite was used. The selectivity of 1,2-PG was further improved after the addition of alkaline, and the yield of 1,2-PG was up to 32. 5% especially for Ba(OH)2. The function of alkaline catalysts in the reaction was also discussed based on a series of reactions using glucose as the substrate, indicating that alkaline was favorable for the isomerization of glucose to fructose and thus promoted the conversion of cellulose into 1,2-PG. After two cycles of reuse, the yield of 1,2-PG and EG slightly decreased (3. 9% and 4. 1%, respectively).关键词
Ni-W/β分子筛/纤维素/1,2-丙二醇/碱催化剂/氢解Key words
Ni-W/β zeolite/cellulose/1 ,2-propylene glycol/alkaline catalysts/hydrogenation分类
化学化工引用本文复制引用
杨龙,孔玲,石惠娴,秦舒浩,张唯,顾敏燕,沈峥,张亚雷..碱催化促进Ni-W/β分子筛催化剂氢解纤维素产1,2-丙二醇的研究[J].燃料化学学报,2017,45(1):48-54,7.基金项目
The project was supported by the National Natural Science Foundation of China (21376180,21676205,51625804), the Fundamental Research Funds for the Central Universities (2870219026,2870219028) and the International Collaborative Project from Shanghai Science and Technology Commission (14230710800).国家自然科学基金(21376180,21676205,51625804),中央高校基础研究基金(2870219026,2870219028)和上海科委国际合作项目(14230710800)资助 （21376180,21676205,51625804）
