Journal
CATALYSIS COMMUNICATIONS
Volume 11, Issue 3, Pages 151-154Publisher
ELSEVIER
DOI: 10.1016/j.catcom.2009.09.009
Keywords
Solid acid; Organic heteropolyacid salt; Esterification; Ionic liquids
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Funding
- National Natural Science Foundation of China [20476046, 20776069, 20771059]
- Jiangsu Provincial Key Natural Science Foundation for Universities [06KJA53012]
- Program for Changjiang Scholars and Innovative Research Team in University [0732]
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The organic Keggin-structured heteropolyacid salt was synthesized by combining phosphotungstic anion with sulfonated quaternary alkylphosphonium cation. It was characterized, and catalytically evaluated in esterification. The salt has an ionic liquid-like composition but possesses a high melting-point near 200 degrees C. It exhibits high yields and selectivity for target esters in various esterification reactions. Moreover. it can be conveniently recovered and steadily reused. (C) 2009 Elsevier B.V. All rights reserved.
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