Journal
CHINESE JOURNAL OF CHEMISTRY
Volume 32, Issue 10, Pages 1072-1076Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cjoc.201400408
Keywords
gold (Au) nanoparticles; hydration of alkynes; water-medium clean reaction; SH-functionalized SBA-15
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Funding
- National Natural Science Foundation of China [21237003, 21261140333]
- Project from College Natural Science Research Plan of Jiangsu Province [13KJB150008]
- Project of Huaian City [HAG2013077]
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A facile approach was developed for synthesizing Au-SH@SO3H-SBA-15 with ordered mesoporous channels by reducing Au3+ to Au nanoparticles with SH-group bonded to silica support, followed by in situ coordinating Au with the unreacted SH-groups. This catalyst exhibited high efficiency in alkyne hydration owing to the high activity of uniformly dispersed ultrasmall Au nanoparticles, the diminished diffusion limit due to the mesoporous structure, and the promoting effect of acidic SO3H-groups resulting from oxidation of the SH-group by Au3+. Meanwhile, the catalyst could be easily recycled and displayed strong durability owing to the strong hydrothermal stability of mesoporous structure and the enhanced stability against Au leaching due to the Au-SH coordination bond.
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