Mg-La-HY-SBA-15分子筛催化甲醇烷基化反应

Alkylation of phenol with methanol over Mg-La-HY-SBA-15 zeolite

摘要: 用两步浸渍法制备了Mg-La-HY-SBA-15复合分子筛，在小型固定床反应器上考察了苯酚甲醇烷基化性能；通过SEM-EDS、Py-FTIR等表征手段分析了Mg-La-HY-SBA-15分子筛的孔结构和酸性。结果表明，Mg负载到HY-SBA-15分子筛上且未改变其微介孔结构；Mg改性后降低了载体的总酸量，增加了总Lewis酸，提高了邻甲酚的选择性和收率。

Abstract: Mg-La-HY-SBA-15 zeolite prepared by separate-step impregnation method was used to catalyze alkylation of phenol with methanol. The porous structure and acid property were characterized by SEM-EDS, Py-FTIR and others.The results found that Mg was successfully supported on La-HY-SBA-15 zeolite. Mg-La-HY-SBA-15 had micro-mesoporous structures. Compared with mono-mental modification, bimental modification reduced the amount of total acid and gained more total Lewis acid. At the same time, the selectivity and yield of o-cresol were increased.