摘要
采用水热法合成了不同Si/A l比的MCM-41介孔材料,研究这些材料在以邻苯二酚和甲醇为原料气相法一步合成愈创木酚反应中的催化性能,并与几种微孔分子筛的催化活性进行比较,考察了孔径、酸强度和酸量对反应性能的影响.结果表明,Si∶A l=100的MCM-41材料表现出较好的催化性能,样品较大的孔径和一定量弱酸中心的存在对反应有利.
Mesoporous MCM-41 materials with different Si/AI molar ratios are synthesized under hydrothermal condition, and .used as catalysts for vapor-phase selective o-methylation of catechol with methanol. The performances of the mesoporous MCM-41 materials were also compared with those of various aluminosilicates molecular sieves to investigate the influences of pore size, the amount and s activity. The results show that MCM-41 with Si ： Al = 100 exhibits a good guaiacol. This may mainly be attributed to the relative large pore size and weak acid on the surface of catalyst.
出处
《吉林大学学报（理学版）》
CAS
CSCD
北大核心
2007年第4期647-651,共5页
Journal of Jilin University:Science Edition
基金
教育部博士点基金(批准号:20040183003)
中国石油天然气集团公司资助项目基金(批准号:JTG20040010)
关键词
MCM-41
硅铝分子筛
愈创木酚
邻苯二酚
甲醇
MCM-41
aluminosilicates
guaiacol
catechol
methanol trength of acid sites on the catalytic catalytic activity and selectivity to the presence of suitable amounts of
