Ionic liquid-assisted synthesis of hierarchically olive-like Al2O3 and CeO2/Al2O3 with enhanced catalytic activity for Orange II degradation

AbstractA one-pot three component reaction of benzaldehydes, 1H-tetrazole-5-amine, and 3-cyanoacetyl indole in the presence of a new hexamethylenetetramine-based ionic liquid/MIL-101(Cr) metal–organic framework as a recyclable catalyst was explored. This novel catalyst, which was fully characterized by XRD, FE-SEM, EDX, FT-IR, TGA, BET, and TEM exhibited outstanding catalytic activity for the preparation of a range of pharmaceutically important tetrazolo[1,5-a]pyrimidine-6-carbonitriles with good to excellent yields in short reaction time.

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Synthesis and catalytic activity of porous polymer containing ionic liquid structures

Kinetics and Catalysis ◽

10.1134/s0023158416060082 ◽

2016 ◽

Vol 57 (6) ◽

pp. 840-846 ◽

Cited By ~ 2

Author(s):

Junqiao Li ◽

Wei Lu ◽

Weifeng Li ◽

Xuezheng Liang

Keyword(s):

Ionic Liquid ◽

Catalytic Activity ◽

Porous Polymer

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Tetracarboxyl-Functionalized Ionic Liquid: Synthesis and Catalytic Properties

Australian Journal of Chemistry ◽

10.1071/ch14720 ◽

2015 ◽

Vol 68 (10) ◽

pp. 1513 ◽

Cited By ~ 3

Author(s):

Miaona Feng ◽

Guoying Zhao ◽

Hongling Gao ◽

Suojiang Zhang

Keyword(s):

Ionic Liquid ◽

Catalytic Activity ◽

Ionic Liquids ◽

Propionic Acid ◽

Propylene Carbonate ◽

Propylene Oxide ◽

High Stability ◽

Ammonium Acetate ◽

Catalytic Properties ◽

Potential Applications

Novel tetracarboxyl-functionalized 2,2′-biimidazolium-based ionic liquids (ILs) with different anions were synthesized in two steps from readily available and sustainable starting materials including ammonium acetate, glyoxal, and halogenated propionic acid. The functionalized IL exhibited higher catalytic activity towards the cycloaddition of CO2 to terminal epoxides. With propylene oxide as a substrate, the optimum yield of propylene carbonate reached 82.7 % at an initial CO2 pressure of 2.0 MPa for 4 h at 140°C. Moreover, the functionalized IL catalyst displayed a high stability and can be reused for at least five cycles without obvious loss of catalytic activity. The results provide a simple and economical way to synthesize multi-functionalized imidazolium-based ILs with versatile potential applications.

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Synthesis, Characterization, and Crystal Structure of Several Novel Acidic Ionic Liquids: 1-ethyl-2-alkyl-benzimidazolium Tetra-Fluoroborate

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.457-458.139 ◽

2013 ◽

Vol 457-458 ◽

pp. 139-143 ◽

Cited By ~ 1

Author(s):

Ming Tian Wang ◽

Chang Ping Pan ◽

Wei Peng Gai ◽

Xiao Xia Lv ◽

Min Gang Zhai ◽

...

Keyword(s):

Crystal Structure ◽

Ionic Liquid ◽

Acetic Acid ◽

Catalytic Activity ◽

Lamellar Structure ◽

X Ray Diffraction ◽

X Ray ◽

Acidic Ionic Liquid ◽

Acidic Ionic Liquids ◽

Good Catalytic Activity

A series of novel acidic ionic liquid: 1-ethyl-2-alkyl-benzimidazolium tetra-fluoroborate (alkyl= Et, Pr-n, Bu-n) were prepared by simple acid-based neutralization of 1-ethyl-2-alkyl-benzimidazole and tetrafluoroboric acid. The compounds were characterized by FTIR spectra, elemental analysis,1HNMR spectra and thermogravimetric analysis. These novel tetra-fluoroborate salts show good catalytic activity to esterification of benzyl alcohol and acetic acid. Furthermore, a crystal of ([H-ebBiBF4) was prepared with the crystal structure and determined by X-ray diffraction analysis. The molecular is of lamellar structure as mainly π electron ring is stacked interleaving between two layers. The results of cation and anion arranged orderly in pair indicate that the coulombic attraction is more dominant. Simultaneously, the weak local hydrogen bonds C-H···F exist in the molecules.

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