Journal of Chemistry

Extraction, characterization and co2 adsorption studies of Silica from rice husk

Author & Affiliation:
P. KISHORE
Research Scholar, Department of Chemistry, JNTUA, Ananthapur (India)
B.N. SRINIVAS
Professor, Dept. of Chemistry, Usha Rama College of Engg. & Tech., Vijayawada, (India)
N.B.L. PRASAD
Senior Chemical Engineer, JNTUA-OTRI, JNTU, Ananthapur, (India)
Keyword:
Rice Husk, Silica, Amines, FT-IR,, CO2 adsorption
Issue Date:
May 2018
Abstract:

Silica was isolated by pyrolysis and chemical treatment with NaOH from rice husk. Thus obtained silica was calcinated at different temperatures under different atmospheres. Highest surface area was recorded for the sample calcinated at 600oC under nitrogen atmosphere. This sample was labelled as RHSiO2. To increase basic sites on RHSiO2, amine impregnation was done by using MEA, DEA and PEI. On all these samples characterization studies like surface area, Pore size distribution, XRD, FT-IR, SEM were carried out. Infrared spectra of the silica is recorded by FT-IR spectrometer and the major chemical groups of silica are identified. The textural features of the amorphous silica observed by scanning electron microscopy (SEM) which clearly shows that amorphous silica has porous and multifaceted particle shape and size. CO2 adsorption capacities are increased with increase in wt. % of amines like MEA, DEA and PEI. However 25 wt.% PEI shows more adsorption capacities at high pressures, as it contains more number of basic or nitrogen containing groups on the surface matrix.

Pages:
84-91
ISSN:
2319-8036 (Online) - 0973-3450 (Print)
Source:
DOI:
http://dx.doi.org/10.22147/juc/140301

Copy the following to cite this article:

P. Kishore; B. Srinivas; N. Prasad, "Extraction, characterization and co2 adsorption studies of Silica from rice husk", Journal of Ultra Chemistry, Volume 14, Issue 3, Page Number 84-91, 2018

Copy the following to cite this URL:

P. Kishore; B. Srinivas; N. Prasad, "Extraction, characterization and co2 adsorption studies of Silica from rice husk", Journal of Ultra Chemistry, Volume 14, Issue 3, Page Number 84-91, 2018

Available from: http://www.journalofchemistry.org/paper/884/

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