摘要
ＭＣＭ４１［１］和ＨＭＳ［２］等介孔分子筛对大分子的扩散阻力较小且具有良好的热稳定性，特别是在合成中可以直接将各种杂原子引入骨架，从而调变其催化性能，因此目前介孔分子筛在催化中的应用引起了各国研究者的广泛兴趣．Ｔｉ，Ｚｒ，Ｖ，Ｃｒ，Ｍｎ，Ｃｕ和Ｆｅ...
Fe, Ni and Crcontaining HMS mesoporous molecular sieves were directly synthesized by a liquidcrystal templating method. The Si/Me molar ratio of the assynthesized samples is close to that of the reactant gel mixture. Almost all of the heteroatomcontaining HMS samples retain high BET surface area in the range of 620882 m2/g and pore volume of above 0.60 cm3/g. Fe, Ni and Crcontaining HMS mesoporous molecular sieve catalysts show higher catalytic activity for ethylbezene dehydrogenation than bulk Fe2O3. NiHMS catalysts are more active for thiophene hydrodesulfurization than other molecular sievesupported Ni catalysts. CrHMS and HMSsupported Cr catalysts are highly active for thiophene hydrodesulfurization, and the activity of the latter for the reaction is 2545 times greater than that of NiHMS catalysts.
出处
《催化学报》
SCIE
CAS
CSCD
北大核心
1999年第4期455-458,共4页
基金
国家攀登计划资助项目
关键词
杂原子
分子筛
HMS
介孔分子筛
脱氢
加氢
脱硫
heteroatomcontaining molecular sieve, HMS mesoporous molecular sieve, synthesis, characterization, dehydrogenation, hydrodesulfurization
