Journal
CHEMICAL ENGINEERING JOURNAL
Volume 173, Issue 2, Pages 620-626Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2011.08.013
Keywords
Hybrid catalysts; Heteropolyacids; Hydroxylation of benzene; Heterogeneous catalysis; Phenol
Categories
Funding
- National Natural Science Foundation of China [21136005, 20976084]
Ask authors/readers for more resources
A novel heteropolyanion-based ionic hybrid was prepared by combining the divalent ionic liquid (IL) cation of 1,1'-(butane-1,4-diyl)-bis(3-methylimidazolium) with the Keggin-structured V-containing heteropolyanion, and characterized by H-1 NMR, FT-IR, ESI-MS, XRD, SEM, TG, BET surface area, melting point, and elemental analysis. Its catalytic activity was evaluated in the hydroxylation of benzene with aqueous H2O2, including the testing of the influence of organic cations, catalytic reusability and optimization of reaction conditions. This hybrid is characterized to be semi-amorphous nanoparticles with a IL-like composition. The hybrid catalyst leads to the liquid-solid biphasic reaction system for hydroxylation of benzene with H2O2, presenting such advantages as high catalytic activity, convenient recovery, and steady reuse. The strong ionic interaction between the divalent IL cation and the heteropolyanion is responsible for the catalyst's solid nature and insolubility, and moreover, the bulk-type catalysis involving the V5+/V4+ redox pairs as active centers accounts for the hybrid's excellent catalytic performance. (C) 2011 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available