期刊
CATALYSIS SCIENCE & TECHNOLOGY
卷 4, 期 7, 页码 2126-2133出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4cy00183d
关键词
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资金
- National Natural Science Foundation of China [21203014]
- Open Foundation of Jiangsu Key Laboratory of Fine Petrochemical Engineering [KF1201]
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology [BM2012110]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
Hexamethylenetetramine has been utilized as a low-cost and widely available precursor for the synthesis of mesoporous graphitic carbon nitride (CN-H-SBA15) through a nanocasting route. The synthesized CN-H-SBA15 material possesses a high surface area (788 m(2) g(-1)), a large pore volume (0.68 cm(3) g(-1)), and rich N content (N/C = 0.277). The characterization results of transmission electron microscopy and small-angle Xray scattering illustrated that CN-H-SBA15 successfully replicated the ordered mesostructures of SBA-15. As a heterogeneous base catalyst, CN-H-SBA15 exhibits efficient and stable activity in the transesterification reactions of beta-keto esters, affording a maximum conversion of n-butanol of 70% at 110 degrees C. The catalytically active sites are proposed as the tertiary amine species of CN-H-SBA15, as revealed by Fourier transform infrared and X-ray photoelectron spectroscopy. Furthermore, the catalytic performance in the transesterification reaction was compared with those of other previously reported catalysts; the results show that CN-H-SBA15 can be served as a promising heterogeneous catalyst towards the transesterification of beta-keto esters.
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