摘要
In this letter, the changes of aluminum content, acid amount and catalytic properties of AlMCM-41 after treatment by NaAlO2 in the presence/absence of cetyltrimethylammonium bromide (CTAB) were studied. The samples were characterized by XRD, N2 adsorption-desorption isotherm, 27Al MAS NMR and NH3-TPD. Characterization results revealed that the introduction of CTAB during the modification process played a crucial role in the adjustment of surface properties of AlMCM-41 including distribution of aluminum atoms and acid site numbers, otherwise the original ordered AlMCM-41 would be completely destroyed.
In this letter, the changes of aluminum content, acid amount and catalytic properties of AlMCM-41 after treatment by NaAlO2 in the presence/absence of cetyltrimethylammonium bromide (CTAB) were studied. The samples were characterized by XRD, N2 adsorption-desorption isotherm, 27Al MAS NMR and NH3-TPD. Characterization results revealed that the introduction of CTAB during the modification process played a crucial role in the adjustment of surface properties of AlMCM-41 including distribution of aluminum atoms and acid site numbers, otherwise the original ordered AlMCM-41 would be completely destroyed.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2004年第9期1093-1096,共4页
Chinese Journal of Inorganic Chemistry
基金
国家重点基础研究专项经费资助项目(No.2000048001)
国家自然科学基金资助项目(No.29973057)。
