A nano-sized solid acid synthesized from rice hull ash for biodiesel production

A nano-sized solid acid was synthesized from rice hull ash by acid activation. The solid acid was characterized by XRD, FT-IR, TEM and solid-state NMR spectroscopy. The characterization results show that the solid acid is amorphous silica with –OH and –SO 3 H functional acid groups. The TEM images s...

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Bibliographic Details
Published in:RSC advances 2014-01, Vol.4 (39), p.20535-20539
Main Authors: Zeng, Danlin, Liu, Shenglan, Gong, Wanjun, Chen, Hongxiang, Wang, Guanghui
Format: Article
Language:English
Subjects:
Ashes
Biodiesel
Catalysts
Hulls
Hulls (structures)
Nanostructure
Rice
Transmission electron microscopy
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Summary:A nano-sized solid acid was synthesized from rice hull ash by acid activation. The solid acid was characterized by XRD, FT-IR, TEM and solid-state NMR spectroscopy. The characterization results show that the solid acid is amorphous silica with –OH and –SO 3 H functional acid groups. The TEM images show that the particle size range of the solid acid catalyst is 50–100 nm. In addition, the catalytic results indicate that the solid acid exhibits excellent activity and recyclability for the transesterification reaction of soybean oil with methanol, suggesting promising industrial applications in biodiesel production.
ISSN:2046-2069
2046-2069
DOI:10.1039/C4RA00266K