Synthesis of immobilized heteropolyanion-based ionic liquids on mesoporous silica SBA-15 as heteroge

来源 :第十七届全国催化学术会议 | 被引量 : 0次 | 上传用户：tatimess

【摘要】

：

Phosphotungstic acid (H3PW12O40) has been successfully loaded onto sulfonate-functionalized ionic liquid modified mesoporous silica SBA-15 by totally anion-exch

【作者】

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Xiaoli Sheng Yuming Zhou Yongle Yang Zewu Zhang Xiaoqin Fu Shuo Zhao

【机构】

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SchoolofChemistryandChemicalEngineering,SoutheastUniversity,Nanjing211189,P.R.China

【出处】

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第十七届全国催化学术会议

【发表日期】

：

2014年10期

【关键词】

：

Supported ionic liquid Mesoporous silica SBA-15 Acid catalysts Catalysis

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Phosphotungstic acid (H3PW12O40) has been successfully loaded onto sulfonate-functionalized ionic liquid modified mesoporous silica SBA-15 by totally anion-exchange.The immobilized catalysts were characterized by XRD,N2 adsorption,TEM,and FTIR spectroscopy.Characterization results show that the mesopore structure of SBA-15 was maintained well even after the surface modification and the subsequent anion-exchange step of [PW12O40]3- (PW).In comparison with the task-specific basic ionic liquid (1-(propyl-3-sulfonate) 3-methyl-imidazolium phosphotungstate),the obtained catalyst showed much higher efficiency in alkylation of o-xylene with styrene.More importantly,such immobilized task-specific basic ionic liquid could be reused without significant loss of catalytic activity after 6 times recycling.

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Synthesis of immobilized heteropolyanion-based ionic liquids on mesoporous silica SBA-15 as heteroge

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