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

College of Materials Science and Engineering

Nanjing Tech University

Research output: Contribution to journal › Article › peer-review

37 Scopus citations

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.

Original language	English
Pages (from-to)	65818-65826
Number of pages	9
Journal	RSC Advances
Volume	5
Issue number	81
DOIs	https://doi.org/10.1039/c5ra08886k
State	Published - 13 Jul 2015

Access to Document

10.1039/c5ra08886k

Cite this

@article{2aff806f86be42ba921d9c26af17fa08,

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.",

year = "2015",

month = jul,

day = "13",

doi = "10.1039/c5ra08886k",

language = "英语",

volume = "5",

pages = "65818--65826",

journal = "RSC Advances",

issn = "2046-2069",

publisher = "Royal Society of Chemistry",

number = "81",

}

TY - JOUR

T1 - Preparation of SiO2 aerogel from rice husk ash

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.

UR - http://www.scopus.com/inward/record.url?scp=84938817448&partnerID=8YFLogxK

U2 - 10.1039/c5ra08886k

DO - 10.1039/c5ra08886k

M3 - 文章

AN - SCOPUS:84938817448

SN - 2046-2069

VL - 5

SP - 65818

EP - 65826

JO - RSC Advances

JF - RSC Advances

IS - 81

ER -

Preparation of SiO₂ aerogel from rice husk ash

Abstract

Access to Document

Other files and links

Fingerprint

Cite this