New Strategy to Synthesis of Hierarchical Mesoporous Zeolites

被引:132
作者
Gu, Fang Na [1 ,2 ]
Wei, Feng [1 ]
Yang, Jia Yuan [1 ]
Lin, Na [1 ]
Lin, Wei Gang [1 ]
Wang, Ying [2 ]
Zhu, Jian Hua [1 ]
机构
[1] Nanjing Univ, Coll Chem & Chem Engn, Key Lab Mesoscop Chem MOE, Nanjing 210093, Peoples R China
[2] Nanjing Univ, ERERC, Nanjing 210093, Peoples R China
关键词
MICELLE-TEMPLATED SILICAS; CATALYTIC-PROPERTIES; CRYSTALLINE ZEOLITE; MOLECULAR-SIEVE; MFI ZEOLITE; PORE; MECHANISM; ALUMINUM; SBA-15; MCM-41;
D O I
10.1021/cm903785r
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
We report a new strategy to synthesize the hierarchical mesoporous zeolite through design of mesoscale cationic surfactant cetyltrimethylammonium bromide (CTAB) micelle with cosolvent tertbutyl alcohol (TBA) and the 1,3,5-trimethylbenzene (TMB) additive, by which the formation of hierarchical mesostructure arose from the condensing of zeolite fragments on the mesoscale surfactant micelles. The hierarchical mesoporous silica with zeolite Y or socialite fragment is synthesized for the first time, which exhibited both the mesostructure and the typical diffraction of zeolite. XRD, N-2 adsorption-desorption, Al-27 MAS NMR, FTIR, and NH3-TPD techniques were employed to characterize the resulting samples, and the adsorption of NPYR (N-nitrosopyrrolidine) and NNN (N-nitrosonornicotine) were performed to assess the adsorptive capability of the zeolitic mesoporous materials. The MS3-4t-5b sample synthesized by assembling zeolite gel exhibited the adsorptive capacity comparable to NaY zeolite for trapping NPYR in airflow but four times superior to NaY for adsorbing bulky nitrosamine NNN in solution because of its hierarchical mesostructure
引用
收藏
页码:2442 / 2450
页数:9
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