STRUCTURAL CHARACTERIZATION OF ACID AND BASE-CATALYZED SILICA XEROGELS

Eda Keleş Güner; Abdulkadir Özer

STRUCTURAL CHARACTERIZATION OF ACID AND BASE-CATALYZED SILICA XEROGELS

Abstract

In this study, silica xerogels were synthesized by the sol gel method using TEOS (tetraethyl orthosilicate), ethanol, water and sulfuric acid as acidic catalyst and ammonia as basic catalyst. The structural characterizations of the synthesized acid-catalyzed silica xerogels (ACXs) and base-catalyzed silica xerogels (BCXs) were investigated by thermal gravimetric analysis (TGA), scanning electron microscopy (SEM) and N2 adsorption and desorption techniques. It was seen from TGA analyzes that the thermal decomposition process of silica xerogels consists of two steps. The SEM images show that the solid skeletal phase of ACXs has a globular morphology with primary particles that are joined together to form agglomerates. In contrast, SEM images of the BCXs indicate a hierarchical morphology with the clusters of these agglomerates organized into larger spherical particles. The pore size distributions (PSD) of ACXs and BCXs samples show a main peak in the micropore and micro-mesopore regions, respectively.

Keywords

References

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Details

Primary Language

English

Subjects

-

Journal Section

Research Article

Authors

Eda Keleş Güner This is me
Türkiye

Abdulkadir Özer This is me
Türkiye

Publication Date

December 1, 2019

Submission Date

April 9, 2019

Acceptance Date

August 16, 2019

Published in Issue

Year 2019 Volume: 37 Number: 4

IZ

https://izlik.org/JA99MF84JK

Cite

RIS / Bibtex

APA

Keleş Güner, E., & Özer, A. (2019). STRUCTURAL CHARACTERIZATION OF ACID AND BASE-CATALYZED SILICA XEROGELS. Sigma Journal of Engineering and Natural Sciences, 37(4), 1199-1206. https://izlik.org/JA99MF84JK

AMA

1.Keleş Güner E, Özer A. STRUCTURAL CHARACTERIZATION OF ACID AND BASE-CATALYZED SILICA XEROGELS. SIGMA. 2019;37(4):1199-1206. https://izlik.org/JA99MF84JK

Chicago

Keleş Güner, Eda, and Abdulkadir Özer. 2019. “STRUCTURAL CHARACTERIZATION OF ACID AND BASE-CATALYZED SILICA XEROGELS”. Sigma Journal of Engineering and Natural Sciences 37 (4): 1199-1206. https://izlik.org/JA99MF84JK.

EndNote

Keleş Güner E, Özer A (December 1, 2019) STRUCTURAL CHARACTERIZATION OF ACID AND BASE-CATALYZED SILICA XEROGELS. Sigma Journal of Engineering and Natural Sciences 37 4 1199–1206.

IEEE

[1]E. Keleş Güner and A. Özer, “STRUCTURAL CHARACTERIZATION OF ACID AND BASE-CATALYZED SILICA XEROGELS”, SIGMA, vol. 37, no. 4, pp. 1199–1206, Dec. 2019, [Online]. Available: https://izlik.org/JA99MF84JK

ISNAD

Keleş Güner, Eda - Özer, Abdulkadir. “STRUCTURAL CHARACTERIZATION OF ACID AND BASE-CATALYZED SILICA XEROGELS”. Sigma Journal of Engineering and Natural Sciences 37/4 (December 1, 2019): 1199-1206. https://izlik.org/JA99MF84JK.

JAMA

1.Keleş Güner E, Özer A. STRUCTURAL CHARACTERIZATION OF ACID AND BASE-CATALYZED SILICA XEROGELS. SIGMA. 2019;37:1199–1206.

MLA

Keleş Güner, Eda, and Abdulkadir Özer. “STRUCTURAL CHARACTERIZATION OF ACID AND BASE-CATALYZED SILICA XEROGELS”. Sigma Journal of Engineering and Natural Sciences, vol. 37, no. 4, Dec. 2019, pp. 1199-06, https://izlik.org/JA99MF84JK.

Vancouver

1.Eda Keleş Güner, Abdulkadir Özer. STRUCTURAL CHARACTERIZATION OF ACID AND BASE-CATALYZED SILICA XEROGELS. SIGMA [Internet]. 2019 Dec. 1;37(4):1199-206. Available from: https://izlik.org/JA99MF84JK