利用表面活性剂合成含丰富介孔的EU-1分子筛

doi:10.13218/j.cnki.csdc.2016.10.007

Abstract

Abstract: Surfactants such as sodium dodecylbenzene sulfonate,hexadecyltrimethylammonium bromide,JH polycarboxylate water reducer JH-01 and JH-03 were used separately to prepare zeolite EU-1.Effect of different surfactant on the preparation of zeolite EU-1 was studied.The zeolite EU-1 was characterized by XRD,SEM,NH₃-TPD and N₂ adsorption-desorption.The catalytic performance evaluation of xylene isomerization of zeolite EU-1 samples was carried out.The results showed that zeolite of EUO topological molecular structure with higher degree of crystallinity can be prepared by adding the above-mentioned four kinds of surfactant,and as comparing with the original sample,the total specific surface area,the total pore volume,the mesoporous surface area and the mesoporous volume were increased significantly.Mesoporous volume of the sample that prepared with addition of sodium dodecylbenzene sulfonate increases by up to 20.2% and the reaction diffusion constraints is obviously reduced.The isomerization activity of xylene by the use of zeolite EU-1 increases from 23.34% to 23.62%.This result reflects that the reaction activity of zeolite EU-1 is improved effectively by the use of the surfactant.

Key words: surfactant, zeolite EU-1, preparation, xylene isomerization

CLC Number:

TQ423

LI Xiao-feng,SUN Xiao-tao,ZHANG Yan-ting,LIU Xiao-zhen,REN Peng-chao,DOU Tao. Preparation of mesoporous zeolite EU-1 with assistance of surfactants[J].China Surfactant Detergent & Cosmetics, 2016, 46(10): 580-584.

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Preparation of mesoporous zeolite EU-1 with assistance of surfactants

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