Grafted ionic liquid: Catalyst for solventless cycloaddition of carbon dioxide and propylene oxide

Zhang, Xuelan; Wang, Dengfeng; Zhao, Ning; Alarifi, Abdullah; Aouak, Taı̈eb; ALOthman, Zeid A.; Wei, Wei; Sun, Yuhan

doi:10.1016/j.catcom.2009.08.007

Cited by 64 publications

(37 citation statements)

References 24 publications

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“…The initial decline of PC yield could be due to HEPIMBr leaching. Poor reusability has been reported before over catalysts of similar kind [15,47,60].…”

Section: Catalyst Recyclingmentioning

confidence: 86%

“…It was found that the amount of HEPIMBr in SBA-15-HEPIMBr and Al-SBA-15-HEPIMBr is 1.77 and 2.29 mmol/g respectively. Based on the C/N ratios, it is clear that HEPIMBr has been grafted on SBA-15 and Al-SBA-15 [47]. Moreover, it is evident that the immobilization of HEPIMBr causes significant change in specific surface area and pore structure of the supports.…”

Section: Characterizationmentioning

confidence: 99%

“…However, the use of zinc halides as co-catalysts (e.g., ZnCl 2 , ZnBr 2 ) is required in this approach. Recently, Udayakumar et al [42][43][44][45][46] and Zhang et al [47] reported some ionic liquid (without hydroxyl groups) functionalized catalysts via immobilization of imidazolium or quaternary ammonium salts onto MCM-41 or SiO 2 . However, their catalytic activities were not satisfactory.…”

Section: Introductionmentioning

confidence: 99%

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3-(2-Hydroxyl-Ethyl)-1-Propylimidazolium Bromide Immobilized on SBA-15 as Efficient Catalyst for the Synthesis of Cyclic Carbonates via the Coupling of Carbon Dioxide with Epoxides

et al. 2010

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3-(2-hydroxyl-ethyl)-1-propylimidazolium bromide (HEPIMBr) was immobilized onto SBA-15, Al-SBA-15 mesoporous molecular sieves and SiO 2 by chemical grafting method. The materials were characterized and used as catalysts for solvent-free synthesis of cyclic carbonates from CO 2 and epoxides under relatively mild conditions. Among them, the HEPIMBr immobilized on SBA-15 performs the best, showing carbonate selectivity and yield of ca. 100% (120°C, 2.0 MPa, 2 h). The catalyst is thermally stable and shows good reusability. Based on the experimental results, a plausible reaction mechanism has been proposed for the catalytic reaction.

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“…The initial decline of PC yield could be due to HEPIMBr leaching. Poor reusability has been reported before over catalysts of similar kind [15,47,60].…”

Section: Catalyst Recyclingmentioning

confidence: 86%

Section: Characterizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

3-(2-Hydroxyl-Ethyl)-1-Propylimidazolium Bromide Immobilized on SBA-15 as Efficient Catalyst for the Synthesis of Cyclic Carbonates via the Coupling of Carbon Dioxide with Epoxides

et al. 2010

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“…The catalytic species consisted of ammonium, phosphonium, and imidazolium-based ILs. The support materials included silicas [50][51][52][82][83][84][85], oxides [51], resins [82][83][84][85][86], zeolites [87,88] , and chitosan [89].…”

Section: Supported Ionic Liquidsmentioning

confidence: 99%

Ionic Liquids: The Synergistic Catalytic Effect in the Synthesis of Cyclic Carbonates

Cheng

Wang

et al. 2013

Catalysts

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This review presents the synergistic effect in the catalytic system of ionic liquids (ILs) for the synthesis of cyclic carbonate from carbon dioxide and epoxide. The emphasis of this review is on three aspects: the catalytic system of metal-based ionic liquids, the catalytic system of hydrogen bond-promoted ionic liquids and supported ionic liquids. Metal and ionic liquids show a synergistic effect on the cycloaddition reactions of epoxides. The cations and anions of ionic liquids show a synergistic effect on the cycloaddition reactions. The functional groups in cations or supports combined with the anions have a synergistic effect on the cycloaddition reactions. Synergistic catalytic effects of ILs play an important role of promoting the cycloaddition reactions of epoxides. The design of catalytic system of ionic liquids will be possible if the synergistic effect on a molecular level is understood.

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“…The first method is the co-condensation of a trialkoxysilylalkyl onium salt and triethoxysilane (Scheme 10-A) [37−39]. The second one is the immobilization by the reaction between surface hydroxyl groups of the solid and the alkoxysilyl group (Scheme 10-B) [40,41]. For the last one (Scheme 10-C), the inorganic materials modified with alkyl halide (usually propylchloride) are used [42−46]; on them, corresponding amine, phosphine, or pyridine can be immobilized and quaternized.…”

Section: Co 2 Cycloaddition Catalyzed By Ils With Lewis Acidsmentioning

confidence: 99%

Ionic Liquids in Green Carbonate Synthesis

Sun¹,

Liu²,

Fujita³

et al. 2011

Ionic Liquids - Classes and Properties

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Grafted ionic liquid: Catalyst for solventless cycloaddition of carbon dioxide and propylene oxide

Cited by 64 publications

References 24 publications

3-(2-Hydroxyl-Ethyl)-1-Propylimidazolium Bromide Immobilized on SBA-15 as Efficient Catalyst for the Synthesis of Cyclic Carbonates via the Coupling of Carbon Dioxide with Epoxides

3-(2-Hydroxyl-Ethyl)-1-Propylimidazolium Bromide Immobilized on SBA-15 as Efficient Catalyst for the Synthesis of Cyclic Carbonates via the Coupling of Carbon Dioxide with Epoxides

Ionic Liquids: The Synergistic Catalytic Effect in the Synthesis of Cyclic Carbonates

Ionic Liquids in Green Carbonate Synthesis

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