Preparation of nanosilica powder from rice husk ash by precipitation method

This work presented a laboratory studies on the preparation of rice husk ash by burning at 700 °C for 3 and 6 h, respectively. Consequently, silica content obtained after heat treatment at 700 °C for 6 h was 98.14%. Rice husk ash (RHA) was purified by alkaline extraction method used 2.0, 2.5 and 3.0...

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Main Authors: Nittaya Thuadaij, Apinon Nuntiya
Format: Journal
Published: 2018
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http://cmuir.cmu.ac.th/jspui/handle/6653943832/60201
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-602012018-09-10T03:48:52Z Preparation of nanosilica powder from rice husk ash by precipitation method Nittaya Thuadaij Apinon Nuntiya Biochemistry, Genetics and Molecular Biology Chemistry Materials Science Mathematics Physics and Astronomy This work presented a laboratory studies on the preparation of rice husk ash by burning at 700 °C for 3 and 6 h, respectively. Consequently, silica content obtained after heat treatment at 700 °C for 6 h was 98.14%. Rice husk ash (RHA) was purified by alkaline extraction method used 2.0, 2.5 and 3.0 N sodium hydroxide. Percent yield of silica extracted by 2.5 N. NaOH, was 90.3% and the infrared spectral data supported the presence of hydrogen bonded silinol group and the siloxane groups in silica. Subsequently, the RHA was subjected to precipitation method in order to produce nanosilica. The precipitation was done by refluxingsilica from RHA in boiling 2.0, 2.5 and 3.0 N NaOH, respectively. TEM results showed that 2.5 N NaOH for 10 h provided agglomerate particles with dimension of 5-10. The specific surface area was found to be 656 m 2/g. From X-ray diffractograms and diffraction pattern showed that the obtained products were amorphous nanosilica. 2018-09-10T03:39:17Z 2018-09-10T03:39:17Z 2008-01-01 Journal 01252526 2-s2.0-67650283753 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=67650283753&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/60201
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
topic Biochemistry, Genetics and Molecular Biology
Chemistry
Materials Science
Mathematics
Physics and Astronomy
spellingShingle Biochemistry, Genetics and Molecular Biology
Chemistry
Materials Science
Mathematics
Physics and Astronomy
Nittaya Thuadaij
Apinon Nuntiya
Preparation of nanosilica powder from rice husk ash by precipitation method
description This work presented a laboratory studies on the preparation of rice husk ash by burning at 700 °C for 3 and 6 h, respectively. Consequently, silica content obtained after heat treatment at 700 °C for 6 h was 98.14%. Rice husk ash (RHA) was purified by alkaline extraction method used 2.0, 2.5 and 3.0 N sodium hydroxide. Percent yield of silica extracted by 2.5 N. NaOH, was 90.3% and the infrared spectral data supported the presence of hydrogen bonded silinol group and the siloxane groups in silica. Subsequently, the RHA was subjected to precipitation method in order to produce nanosilica. The precipitation was done by refluxingsilica from RHA in boiling 2.0, 2.5 and 3.0 N NaOH, respectively. TEM results showed that 2.5 N NaOH for 10 h provided agglomerate particles with dimension of 5-10. The specific surface area was found to be 656 m 2/g. From X-ray diffractograms and diffraction pattern showed that the obtained products were amorphous nanosilica.
format Journal
author Nittaya Thuadaij
Apinon Nuntiya
author_facet Nittaya Thuadaij
Apinon Nuntiya
author_sort Nittaya Thuadaij
title Preparation of nanosilica powder from rice husk ash by precipitation method
title_short Preparation of nanosilica powder from rice husk ash by precipitation method
title_full Preparation of nanosilica powder from rice husk ash by precipitation method
title_fullStr Preparation of nanosilica powder from rice husk ash by precipitation method
title_full_unstemmed Preparation of nanosilica powder from rice husk ash by precipitation method
title_sort preparation of nanosilica powder from rice husk ash by precipitation method
publishDate 2018
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=67650283753&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/60201
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