Sulphonic Acid-Functionalized Benzimidazolium Based Poly Ionic Liquid Catalyzed Esterification of Levulinic Acid

Khiratkar, Avinash Ganesh; Balinge, Kamlesh Rudreshwar; Krishnamurthy, Manikandan; Cheralathan, K.K.; Patle, Dipesh S.; Singh, Vishal; Arora, Sanyam; Bhagat, Pundlik Rambhau

doi:10.1007/s10562-017-2284-1

Cited by 42 publications

(20 citation statements)

References 58 publications

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“…The N 2 adsorption desorption isothermal and pore size distributions of MPM‐SO 3 H‐[C 3 V][HSO 4 ] were shown in Figure (A). The adsorption and desorption isothermal curve is a type IV curve with an obvious hysteresis loop of type H1 . As shown in Figure (A), it can be seen that amount adsorbed in the low pressure section increases gently, and N 2 molecules are adsorbed on the inner surface of the mesopores from single layer to multiple layers at this time.…”

Section: Resultsmentioning

confidence: 90%

“…The results showed that a high conversion of styrene (100%) and 1,2‐diphenylethane (PXE) yield of 99.67% was obtained under optimal reaction conditions. Moreover, poly ionic liquids not only utilize their own characteristics to develop rapidly in chemical adsorption, membrane separation, gel, but also has been widely used in organic synthesis reactions such as esterification reaction, epoxy reaction and oxidation reaction . In addition, the combination of modified polyurethane with graphene, a carrier for nanoparticles and pharmaceutical applications in combination with biomass also promoted the development of poly ionic liquid.…”

Section: Introductionmentioning

confidence: 99%

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The catalytic performance study of polymerized ionic liquid synthesized in different conditions on alkylation of o‐Xylene with styrene

Liu

Gao

Sheng

et al. 2019

Applied Organom Chemis

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In this work, a series of novel acidic polymerized ionic liquids were used as heterogeneous catalyst for alkylation of o-Xylene with styrene. And the effect of the amount of initiator and the type of acid used for ion exchange on catalyst structure and the catalytic performance of catalysts for alkylation were studied thoroughly. The experiment results show: when the percentage of the amount of initiator in the total material is 3%, the polymerized ionic liquid catalyst MPM-SO 3 H-[C 3 V][SO 3 CF 3 ] has the most uniform with a specific surface area of 97.30 m 2 /g and a pore volume of 0.35 cm 3 /g. Benefiting from the unique structure features, MPM-SO 3 H-[C 3 V][SO 3 CF 3 ] manifested an excellent catalytic performance for alkylation of o-Xylene with styrene, along with the conversion of styrene was 96.8% and the yield of 1-Phenyl-1-ortho-xylene ethane was 94.7%. Therefore, this work provides a novel reference to the synthesis of polymerized ionic liquids and clearly explains the advantage of novel acidic polymerized ionic liquids on alkylation.

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Section: Resultsmentioning

confidence: 90%

Section: Introductionmentioning

confidence: 99%

The catalytic performance study of polymerized ionic liquid synthesized in different conditions on alkylation of o‐Xylene with styrene

Liu

Gao

Sheng

et al. 2019

Applied Organom Chemis

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“…On the other hand, an area in which BILs were heavily studied is organic synthesis, where they were successfully used as catalysts in several reaction classes such as the Biginelli reaction [61], the Micheal reaction [62,63], condensations [64][65][66][67], alkylations [68], amine formylation [69], coupling [70], and esterifications [71]. Furthermore, the use of BILs as catalysts has also been reported in the preparation of natural-derived building blocks: in the transesterification of castor oil with methanol [72], in the production of ethyl levulinate [73] and in the preparation of 5-hydroxymethyl furfural starting from chitosan [74].…”

Section: Introductionmentioning

confidence: 99%

Expanding the Chemical Space of Benzimidazole Dicationic Ionic Liquids

et al. 2021

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Benzimidazole dicationic ionic liquids (BDILs) have not yet been widely explored in spite of their potential. Therefore, two structurally related families of BDILs, paired with either bromide or bistriflimide anions and bearing alkyl spacers ranging from C3 to C6, have been prepared. Their thermal properties have been studied by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC), while their electrical properties have been assessed by cyclic voltammetry (CV). TG analysis confirmed the higher stability of the bistriflimide BDILs over the bromide BDILs, with minor variation within the two families. Conversely, DSC and CV allowed for ascertaining the role played by the spacer length. In particular, the thermal behavior changed dramatically among the members of the bistriflimide family, and all three possible thermal behavior types of ILs were observed. Furthermore, cyclic voltammetry showed different electrochemical window (C3(C1BenzIm)2/2Tf2N < C4(C1BenzIm)2/2Tf2N, C5(C1BenzIm)2/2Tf2N < C6(C1BenzIm)2/2Tf2N) as well as a reduction peak potential, shape, and intensity as a function of the spacer length. The results obtained highlight the benefit of accessing a more structurally diverse pool of compounds offered by dicationic ILs when compared to the parent monocationic ILs. In particular, gains are to be found in the ease of fine-tuning their properties, which translates in facilitating further investigations toward BDILs as designer solvents and catalysts.

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“…In recent years, the wide development of acidic PILs has already expanded the range of applications for PILs successfully, which were synthesized via free‐radical polymerization or ion exchange . Also, it was well known that acidic PILs have been used as catalysts for various catalytic transformations with better stability as well as better recoverability and recyclability . Liu et al .…”

Section: Introductionmentioning

confidence: 99%

“…And the synthesized catalyst was effectively used for the esterification of LA with ethanol with selectivity higher than 99.5%. Besides, the heterogeneous catalyst was reused for up to five cycles without significant loss in catalytic activity . Combining these explorations of acidic PILs, it is found that acidic PILs have the obvious advantage of separating easily and excellent catalytic performance.…”

Section: Introductionmentioning

confidence: 99%

Stable poly (ionic liquids) with unique cross‐linked mesoporous‐macroporous structure as efficient catalyst for alkylation of o‐xylene and styrene

Sheng

Gao

Zhou

et al. 2019

Applied Organom Chemis

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In this work, using divinylbenzene (D), 1-vinylimidazole (V) and 1-vinyl-3butylimidazolium bromide ([VBIM][Br]) as monomers, the binary-monomer poly (ionic liquids) (PILs) and ternary-monomer PILs were successfully synthesized, via hydrothermal polymerization and anion exchange, sequentially. Compared with each other, the ternary polymeric acidic IL catalyst has a clear spongy porous structure, while having a more stable macroporous structure, a larger specific surface area, more acidic groups and more active sites. Catalytic performance of catalyst was investigated through the alkylation of o-xylene and styrene. The effect of the amount of IL added and the length of the cation chain on the ternary polymerization of acidic IL was systematically investigated.Under optimal reaction conditions (molar ratio of monomers was D:V: [VBIM][Br] = 2:1:1, the most suitable cation chain length was C 4 ), the synthesized MPD-[C 4 V]-[VBIM][SO 3 CF 3 ] has a larger specific surface area (89.47 m 2 /g), large pore volume (0.29 cm 3 /g), and abundant mesopores and macropores, which help to improve the contact between the active site and reactants. Moreover, the catalyst could maintain a relatively high conversion of styrene (99.0%), 1,2-diphenylethane yield (98.7%) and high thermostability under reaction and be easily be divided from the solution, which is critical for heterogeneous solid catalysts.

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Sulphonic Acid-Functionalized Benzimidazolium Based Poly Ionic Liquid Catalyzed Esterification of Levulinic Acid

Cited by 42 publications

References 58 publications

The catalytic performance study of polymerized ionic liquid synthesized in different conditions on alkylation of o‐Xylene with styrene

The catalytic performance study of polymerized ionic liquid synthesized in different conditions on alkylation of o‐Xylene with styrene

Expanding the Chemical Space of Benzimidazole Dicationic Ionic Liquids

Stable poly (ionic liquids) with unique cross‐linked mesoporous‐macroporous structure as efficient catalyst for alkylation of o‐xylene and styrene

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