季铵盐型改性淀粉辅助蒸汽相法合成多级孔EU-1沸石及其催化性能

doi:10.13218/j.cnki.csdc.2016.08.008

Abstract

Abstract: Using quaternary ammonium salt modified starch as mesoporous template,hierarchical EU-1 zeolite was synthesized by vapor phase method.The physicochemical properties of the synthesized samples were characterized by XRD,FT-IR,SEM,N₂ adsorption-desorption and NH₃-TPD.The results showed that by regulating the dosage of quaternary ammonium salt modified starch,the mesoporous pore volume of the sample is increased by 0.081 cm³/g and the apparent surface area of the sample is increased by 23.35 cm²/g.The catalytic performance of the samples is examined by xylene isomerization test.The results showed that the equilibrium concentration of PX is increased by 0.88 percent points,the ethylbenzene conversion is increased by 8.47 percent points and the yield of C₈ hydrocarbons is increased by 1.66 percent points.

Key words: EU-1 zeolite, quaternary ammonium salt modified starch, vapor phase method, hierarchical

CLC Number:

TQ426.95

LIU Xiao-zhen,LI Xiao-feng,GAO Meng,GAO Li-xia,LIU Yong-mei,DOU Tao. Synthesis of hierarchical EU-1 zeolite using quaternary ammonium salt modified starch assisted vapor phase method and its catalytic performance[J].China Surfactant Detergent & Cosmetics, 2016, 46(8): 462-466.

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Synthesis of hierarchical EU-1 zeolite using quaternary ammonium salt modified starch assisted vapor phase method and its catalytic performance

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