三氨基甲酸酯链有机硅季铵盐导向下多级孔ZSM-5沸石的制备和表征
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摘要
采用一种新颖的三氨基甲酸酯链有机硅季铵盐作为介孔结构导向模板剂合成沸石分子筛,通过XRD、SEM、TEM和氮吸附进行结构表征。结果表明,所得沸石分子筛为椭圆状的多级孔道ZSM-5沸石分子筛,其介孔孔径主要在3. 5 nm左右。
Hierarchically porous ZSM-5 zeolites were synthsized by a new organosilane template with tricarbamate carbon chains. The structure of the zeolite crystals was confirmed by scanning electron microscopy( SEM),transmission electron microscopy( TEM),nitrogen adsorption-desorption measurements,and X-ray diffraction( XRD),which showed an elliptical crystal morphology and contained mesopores around3. 5 nm in it.
Hierarchically porous ZSM-5 zeolites were synthsized by a new organosilane template with tricarbamate carbon chains. The structure of the zeolite crystals was confirmed by scanning electron microscopy( SEM),transmission electron microscopy( TEM),nitrogen adsorption-desorption measurements,and X-ray diffraction( XRD),which showed an elliptical crystal morphology and contained mesopores around3. 5 nm in it.
引文
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[10] Han J J,Liu D L. Influence of synthesis conditions on the mesopore distribution and morphology control of hierarchical ZSM-5 zeolites synthesized by double-acyloxy organosilane surfactants[J]. European Journal of Inorganic Chemistry,2015(30):5081-5088.
[11] Serrano D P,Aguado J,Escola J M,et al. Hierarchical zeolites with enhanced textural and catalytic properties synthesized from organofunctionalized seeds[J]. Chemistry of Materials,2006,18(10):2462-2464.
[12] Choi M,Cho H S,Srivastava R,et al. Amphiphilic organosilane-directed synthesis of crystalline zeolite with tunable mesoporosity[J]. Nature Materials,2006,5(9):718-723.
[2] Mohamed M M. Synthesis of ZSM-5 zeolite of improved bulk and surface properties via mixed templates[J]. Journal of Materials Science,2007,42(11):4066-4075.
[3] Moller K,Bein T. Mesoporosity——a new dimension for zeolites[J]. Chemical Society Reviews,2013,42(9):3689-3707.
[4] Fan W,Snyder M A,Kumar S,et al. Hierarchical nanofabrication of microporous crystals with ordered mesoporosity[J]. Nature Materials,2008,7(12):984-991.
[5] Xiao F S,Wang L,Yin C,et al. Catalytic properties of hierarchical mesoporous zeolites templated with a mixture of small organic ammonium salts and mesoscale cationic polymers[J]. Angewandte Chemie-International Edition,2006,45(19):3090-3093.
[6] Yao J,Huang Y,Wang H. Controlling zeolite structures and morphologies using polymer networks[J]. Journal of Materials Chemistry,2010,20(44):9827-9831.
[7] Holm M S,Hansen M K,Christensen C H.“One-pot”ion-exchange and mesopore formation during desilication[J]. European Journal of Inorganic Chemistry,2009(9):1194-1198.
[8] Zhao J,Liu D L. A mesoporous ZSM-5 zeolite synthetized by a novel double long-alkyl-chain organosilane template[J]. Bulletin of the Chemical Society of Japan,2016,90(2):210-212.
[9] He D P,Liu D L. Dramatic influence of carbamate-linked double chain organosilane with different length on zeolite morphology control[J]. Journal of Porous Materials,2015,22(1):65-72.
[10] Han J J,Liu D L. Influence of synthesis conditions on the mesopore distribution and morphology control of hierarchical ZSM-5 zeolites synthesized by double-acyloxy organosilane surfactants[J]. European Journal of Inorganic Chemistry,2015(30):5081-5088.
[11] Serrano D P,Aguado J,Escola J M,et al. Hierarchical zeolites with enhanced textural and catalytic properties synthesized from organofunctionalized seeds[J]. Chemistry of Materials,2006,18(10):2462-2464.
[12] Choi M,Cho H S,Srivastava R,et al. Amphiphilic organosilane-directed synthesis of crystalline zeolite with tunable mesoporosity[J]. Nature Materials,2006,5(9):718-723.