Journal ArticleDOI
Isopropylation of m-Cresol Catalyzed by Recoverable Acidic Ionic Liquids
TLDR
In this paper, several SO3H-functionalized ionic liquids were used as the acid catalyst for the isopropylation of m-cresol with alcohol.Abstract:
Several SO3H-functionalized ionic liquids were used as the acid catalyst for the isopropylation of m-cresol with isopropyl alcohol. The results indicated that the sequence of the catalytic activity was in good agreement with the acidity order. A 77.7% conversion of m-cresol and 48.7% selectivity for 2-isopropyl-5-methylphenol were observed in the presence of [TMBSA][HSO4] (TMBSA = N,N,N-trimethyl ammonium-N-butanesulfonic acid). The catalysts could be recovered by extraction and reused, and after eight times of recycling, a loss of catalytic activity was not evident.read more
Citations
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Journal ArticleDOI
Acidic Ionic Liquids.
TL;DR: This article provides a comprehensive review on applications of acidic ionic liquids in a wide array of fields including catalysis, CO2 fixation, ionogel, electrolyte, fuel-cell, membrane, biomass processing, biodiesel synthesis, desulfurization of gasoline/diesel, metal processing, and metal electrodeposition.
Journal ArticleDOI
Brønsted acidic ionic liquids: Green catalysts for essential organic reactions
TL;DR: In this article, a review of the applications of BAILs as clean and versatile replacements for the traditional homogeneous acid catalysts such as H2SO4, HCl and H3PO4 is presented.
Journal ArticleDOI
Accelerating the design of multi-component nanocomposite imprinted membranes by integrating a versatile metal–organic methodology with a mussel-inspired secondary reaction platform
Yilin Wu,Ming Yan,Xinlin Liu,Peng Lv,Jiuyun Cui,Minjia Meng,Jiangdong Dai,Yongsheng Yan,Chunxiang Li +8 more
TL;DR: In this article, a novel multi-component metal-organic nanocomposite imprinted membrane (MMO-MIM) has been prepared by integrating a bioinspired metalorganic methodology with the secondary surface sol-gel imprinting technique.
Journal ArticleDOI
Application of ionic liquids as recyclable green catalysts for selective alkylation of phenol
TL;DR: In this article, the synthesis of heteropoly anion-based ionic liquid catalysts for alkylation of phenol with tert-butyl alcohol (TBA) as an alkylating agent was studied in presence of different ionic Liquid Cat catalysts.
Journal ArticleDOI
Zn-loaded HY zeolite as active catalyst for iso-propylation of biomass-derived phenolic compounds: A comparative study on the effect of acidity and porosity of zeolites
TL;DR: In this paper, the authors explored the gas-phase alkylation of m-cresol with iso-propanol over zeolites like HZSM5, HBEA, HMCM22, HY, and ZnY solid acid catalysts.
References
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Journal ArticleDOI
Novel Brønsted Acidic Ionic Liquids and Their Use as Dual Solvent−Catalysts
Amanda C. Cole,Jessica L. Jensen,Ioanna Ntai,Kim Loan T. Tran,Kristin J. Weaver,David C. Forbes,James H. Davis +6 more
TL;DR: The new ionic liquids combine the low volatility and ease of separation from product normally associated with solid acid catalysts, with the higher activity and yields normally found using conventional liquid acids.
Journal ArticleDOI
Determination of an Acidic Scale in Room Temperature Ionic Liquids
TL;DR: The acidity scale of different Brønsted acids in ionic liquids has been investigated by determination of Hammett functions, using a spectrophotometric indicator method to correlate the acidity strength of ionic liquid systems with their ability to achieve acid-catalyzed reactions.
Journal ArticleDOI
A Brønsted acidic ionic liquid as an efficient and reusable catalyst system for esterification
TL;DR: In this article, a halogen-free Bronsted acidic ionic liquid, N-methyl-2-pyrrolidoniummethyl sulfonate ([NMP]+CH3SO3], was used for esterification of ethanol by acetic acid.
Journal ArticleDOI
Novel Bronsted acidic ionic liquid as efficient and reusable catalyst system for esterification
Jianzhou Gui,Jianzhou Gui,Xiaohui Cong,Dan Liu,Xiaotong Zhang,Zhide Hu,Zhaolin Sun,Zhaolin Sun +7 more
TL;DR: In this article, a halogen-free Bronsted acidic ionic liquid was used for esterification of alcohols by acetic acid, and good conversion rate and high selectivity were obtained, and the liquid esters formed a separate phase that was decanted.
Journal ArticleDOI
Chemical composition and antioxidant effect of glycosidically bound volatile compounds from oregano (Origanum vulgare L. ssp. hirtum)
TL;DR: In this article, the content and chemical composition of the glycosidically bound volatiles from oregano as well as their antioxidative properties were examined and compared to the antioxidative activity of essential oil, pure thymol, thymoquinone and also to α-tocoferol.