【摘要】 用无机碱NaOH和有机碱TEAOH合成了不同硅铝比的AlMCM 41介孔分子筛 ,通过XRD、SEM、TEM、TPDA、吡啶吸附IR和N2 等温吸附进行了表征。研究表明 ,使用TEAOH适合于合成低硅铝比AlMCM 41,而使用NaOH合成高硅铝比的AlMCM 41,所得产物的有序程度较高。由TEAOH合成AlMCM 41的比表面、孔径、总酸量和Br nsted酸量均略大于由NaOH合成的样品 ,而且对异丙苯裂解和苯与 1 十二烯烷基化反应的活性前者也高于后者更多还原

【Abstract】 AlMCM 41 mesoporous molecular sieves with various Si/Al ratios were synthesized by using inorganic and organic alkalis, NaOH and TEAOH, and were characterized by XRD,SEM,TEM,TPDA,IR spectra of pyridine adsorbed and N 2 adsorption deorption method Ii is showed that TEAOH is suitable for the synthesis of AlMCM 41 with lower Si/Al ratio,while NaOH is better alkali reagent to prepare ordered mesoporous AlMCM 41 with higher Si/Al ratio In comparison with the samples prepared by NaOH,the mesoporous materials prepared by TEAOH have larger surface,bigger pore diameter,more total acid amount and Brnsted acidity,and also show higher catalytic acitivity for cracking of cumene and alkylation of benzen with 1 dodecen更多还原