Synthesis of immobilized heteropolyanion-based ionic liquids on mesoporous silica SBA-15 as a heterogeneous catalyst for alkylation

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

doi:10.1039/c4ra03531c

Synthesis of immobilized heteropolyanion-based ionic liquids on mesoporous silica SBA-15 as a heterogeneous catalyst for alkylation

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

Southeast University, Nanjing

Research output: Contribution to journal › Article › peer-review

31 Scopus citations

Abstract

Phosphotungstic acid (H₃PW₁₂O₄₀) has been successfully loaded onto sulfonate-functionalized ionic liquid-modified mesoporous silica SBA-15 by total 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 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 an immobilized task-specific basic ionic liquid could be reused without significant loss of catalytic activity even after recycling six times. This journal is

Original language	English
Pages (from-to)	30697-30703
Number of pages	7
Journal	RSC Advances
Volume	4
Issue number	58
DOIs	https://doi.org/10.1039/c4ra03531c
State	Published - 2014
Externally published	Yes

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title = "Synthesis of immobilized heteropolyanion-based ionic liquids on mesoporous silica SBA-15 as a heterogeneous catalyst for alkylation",

abstract = "Phosphotungstic acid (H3PW12O40) has been successfully loaded onto sulfonate-functionalized ionic liquid-modified mesoporous silica SBA-15 by total 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 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 an immobilized task-specific basic ionic liquid could be reused without significant loss of catalytic activity even after recycling six times. This journal is",

author = "Xiaoli Sheng and Yuming Zhou and Yongle Yang and Yiwei Zhang and Zewu Zhang and Shijian Zhou and Xiaoqin Fu and Shuo Zhao",

year = "2014",

doi = "10.1039/c4ra03531c",

language = "英语",

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pages = "30697--30703",

journal = "RSC Advances",

issn = "2046-2069",

publisher = "Royal Society of Chemistry",

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TY - JOUR

T1 - Synthesis of immobilized heteropolyanion-based ionic liquids on mesoporous silica SBA-15 as a heterogeneous catalyst for alkylation

AU - Sheng, Xiaoli

AU - Zhou, Yuming

AU - Yang, Yongle

AU - Zhang, Yiwei

AU - Zhang, Zewu

AU - Zhou, Shijian

AU - Fu, Xiaoqin

AU - Zhao, Shuo

PY - 2014

Y1 - 2014

N2 - Phosphotungstic acid (H3PW12O40) has been successfully loaded onto sulfonate-functionalized ionic liquid-modified mesoporous silica SBA-15 by total 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 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 an immobilized task-specific basic ionic liquid could be reused without significant loss of catalytic activity even after recycling six times. This journal is

AB - Phosphotungstic acid (H3PW12O40) has been successfully loaded onto sulfonate-functionalized ionic liquid-modified mesoporous silica SBA-15 by total 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 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 an immobilized task-specific basic ionic liquid could be reused without significant loss of catalytic activity even after recycling six times. This journal is

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U2 - 10.1039/c4ra03531c

DO - 10.1039/c4ra03531c

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SN - 2046-2069

VL - 4

SP - 30697

EP - 30703

JO - RSC Advances

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ER -

Synthesis of immobilized heteropolyanion-based ionic liquids on mesoporous silica SBA-15 as a heterogeneous catalyst for alkylation

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