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

日用化学工业 ›› 2016, Vol. 46 ›› Issue (8): 462-466.doi: 10.13218/j.cnki.csdc.2016.08.008

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

刘晓臻¹,李晓峰¹,高萌¹,高李霞¹,刘永梅¹,窦涛^1,2

1.太原理工大学精细化工研究所,山西太原 030024;
2.中国石油大学化工学院CNPC催化重点实验室,北京 102249

出版日期:2016-08-22 发布日期:2019-04-18
通讯作者: 李晓峰,副教授,电话:13994265785,E-mail:13994265785@163.com。
作者简介:刘晓臻(1989-),女,山东人,硕士,电话:15034157203,E-mail:724175003@qq.com。
基金资助:
国家自然科学基金资助项目(20973123);国家科技型中小企业技术创新项目(14C26211400552)

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

LIU Xiao-zhen¹,LI Xiao-feng¹,GAO Meng¹,GAO Li-xia¹,LIU Yong-mei¹,DOU Tao^1,2

1.Research Institute of Special Chemicals,Taiyuan University of Technology,Taiyuan,Shanxi 030024,China;
2.CNPC Key Laboratory of Catalysis,College of Chemical Engineering,China University of Petroleum,Beijing 102249,China

Online:2016-08-22 Published:2019-04-18

摘要/Abstract

摘要： 以季铵盐型改性淀粉为介孔模板,采用蒸汽相法成功合成多级孔EU-1沸石。通过XRD,FT-IR,SEM,N₂吸附-脱附和NH₃-TPD等手段对合成样品的物化性质进行表征。研究表明:通过调节季铵盐型改性淀粉的量,样品的介孔孔容增加了0.081 cm³/g,外表面积增加了23.35 cm²/g。通过二甲苯异构化测试来考察样品的催化性能,发现:对二甲苯(PX)平衡浓度提高了0.88个百分点,乙苯的转化率提高了8.47个百分点,C₈烃收率提高了1.66个百分点。

关键词: EU-1沸石, 季铵盐型改性淀粉, 蒸汽相法, 多级孔

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

中图分类号:

TQ426.95

刘晓臻,李晓峰,高萌,高李霞,刘永梅,窦涛. 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[J]. 日用化学工业, 2016, 46(8): 462-466.

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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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

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

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