Journal of Porous Materials

, Volume 20, Issue 5, pp 1225–1230 | Cite as

One-pot generation of mesoporous carbon supported nanocrystalline H3PW12O40 heteropoly acid with high performance in microwave esterification of acetic acid and isoamyl alcohol

Article
First Online:

Abstract

Ordered mesoporous carbon-supported H3PW12O40 heteropoly acid materials (HPW/OMCs) have been rationally synthesized for the first time. The method is based on the evaporation-induced triconstituent co-assembly effect using the sol–gel process, wherein soluble resol polymer is used as an organic precursor, and triblock copolymer F127 is used as a template. The ordered mesoporous carbon-supported H3PW12O40 heteropoly acid materials were analyzed and characterized by X-ray diffraction, N2 adsorption and desorption (BET), and transmission electron microscope. The mesoporous carbon-supported H3PW12O40 materials possess an ordered mesostructure, narrow pore size distributions (around 2.8–3.6 nm), high pore volumes (up to 0.49 cm3 g−1), high specific BET surface areas (up to 590 m2 g−1), tailorable HPW content (up to 30 wt%), and well dispersion of HPW particles. Moreover, the resultant mesoporous ordered mesoporous carbon-supported H3PW12O40 materials exhibit high catalytic activity in microwave esterification of acetic acid and isoamyl alcohol. The obtained 20 % HPW/OMC catalyst exhibits high catalytic performance with 96.7 % of isoamyl acetate yield at temperature of 120 °C, alcohol/acid molar ratio of 2, catalyst amount of 0.2 g, microwave irradiation power of 800 W, and reaction time of 18 min. It was believed that the concentration of H3PW12O40 have a crucial effect on the HPW/OMCs’ porosity, mesostructure and catalytic performance.

Keywords

Heterogeneous catalysis Heteropoly acid Mesoporous materials Microwave Esterification 
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Notes

Acknowledgments

The authors appreciate the financial support of the NUAA Research Fund for Fundamental Research.

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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  1. 1.College of Material Science and TechnologyNanjing University of Aeronautics and AstronauticsNanjingPeople’s Republic of China

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