Preparation of SiO2 aerogel from rice husk ash

Sheng Cui; Shu Wen Yu; Ben Lan Lin; Xiao Dong Shen; Danming Gu

doi:10.1039/c5ra08886k

Preparation of SiO₂ aerogel from rice husk ash

Sheng Cui, Shu Wen Yu, Ben Lan Lin, Xiao Dong Shen, Danming Gu

材料科学与工程学院

Nanjing Tech University

科研成果: 期刊稿件 › 文章 › 同行评审

37 引用（Scopus）

摘要

Silica was leached from rice husk ash as sodium silicate by NaOH treatment. Using water glass as the silica source, SiO₂ aerogel was prepared via the sol-gel process and supercritical drying of ethanol. Based on gelation time and porous characteristics of SiO₂ aerogel, the optimum gel preparation technology was determined such as silica concentration of 6.0 wt%, gelation at pH value of 5.0 and aging in H₂O/EtOH. Incidentally, the density was as low as 0.0713 g cm^-3, specific surface area was 729.82 m² g^-1, hole size was 3.39 cm³ g^-1, and average pore size was 16.32 nm, and the size distribution was uniform.

源语言	英语
页（从-至）	65818-65826
页数	9
期刊	RSC Advances
卷	5
期	81
DOI	https://doi.org/10.1039/c5ra08886k
出版状态	已出版 - 13 7月 2015

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10.1039/c5ra08886k

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title = "Preparation of SiO2 aerogel from rice husk ash",

abstract = "Silica was leached from rice husk ash as sodium silicate by NaOH treatment. Using water glass as the silica source, SiO2 aerogel was prepared via the sol-gel process and supercritical drying of ethanol. Based on gelation time and porous characteristics of SiO2 aerogel, the optimum gel preparation technology was determined such as silica concentration of 6.0 wt%, gelation at pH value of 5.0 and aging in H2O/EtOH. Incidentally, the density was as low as 0.0713 g cm-3, specific surface area was 729.82 m2 g-1, hole size was 3.39 cm3 g-1, and average pore size was 16.32 nm, and the size distribution was uniform.",

author = "Sheng Cui and Yu, {Shu Wen} and Lin, {Ben Lan} and Shen, {Xiao Dong} and Danming Gu",

note = "Publisher Copyright: {\textcopyright} The Royal Society of Chemistry.",

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AU - Cui, Sheng

AU - Yu, Shu Wen

AU - Lin, Ben Lan

AU - Shen, Xiao Dong

AU - Gu, Danming

PY - 2015/7/13

Y1 - 2015/7/13

N2 - Silica was leached from rice husk ash as sodium silicate by NaOH treatment. Using water glass as the silica source, SiO2 aerogel was prepared via the sol-gel process and supercritical drying of ethanol. Based on gelation time and porous characteristics of SiO2 aerogel, the optimum gel preparation technology was determined such as silica concentration of 6.0 wt%, gelation at pH value of 5.0 and aging in H2O/EtOH. Incidentally, the density was as low as 0.0713 g cm-3, specific surface area was 729.82 m2 g-1, hole size was 3.39 cm3 g-1, and average pore size was 16.32 nm, and the size distribution was uniform.

AB - Silica was leached from rice husk ash as sodium silicate by NaOH treatment. Using water glass as the silica source, SiO2 aerogel was prepared via the sol-gel process and supercritical drying of ethanol. Based on gelation time and porous characteristics of SiO2 aerogel, the optimum gel preparation technology was determined such as silica concentration of 6.0 wt%, gelation at pH value of 5.0 and aging in H2O/EtOH. Incidentally, the density was as low as 0.0713 g cm-3, specific surface area was 729.82 m2 g-1, hole size was 3.39 cm3 g-1, and average pore size was 16.32 nm, and the size distribution was uniform.

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Preparation of SiO2 aerogel from rice husk ash

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Preparation of SiO₂ aerogel from rice husk ash