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VNUHCM Journal of

Science and Technology Development

An official journal of Viet Nam National University Ho Chi Minh City, Viet Nam since 1997

ISSN: 1859-0128
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Effect of hydrothermal treatment temperature on morphology of obtained calcium silicate from rice husk ash

Kien Trung Pham 1, *
Nguyen Pham Quang Tran 1
Thang Hoc Nguyen 2

  1. Faculty of Materials Engineering, Ho Chi Minh City University of Technology, VNU-HCM
  2. Faculty of Chemical Technology, Ho Chi Minh City University of Food Industry
Correspondence to: Kien Trung Pham, Faculty of Materials Engineering, Ho Chi Minh City University of Technology, VNU-HCM. Email: pvphuc@vnuhcm.edu.vn.
Volume & Issue: Vol. 19 No. 3 (2016) | Page No.: 69-75 | DOI: 10.32508/stdj.v19i3.575
Published: 2016-09-30

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Copyright © 2016 by the author(s).

Copyright The Author(s) 2023. This article is published with open access by Vietnam National University, Ho Chi Minh city, Vietnam. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0) which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited. 

Abstract

This research report on the effect of hydrothermal treatment temperature on morphology of obtained calcium silicate from Vietnam Rice Husk Ash (VRHA). VRHA is collected at the Mekong Delta River, burn to obtain the active silica which can be used for further step. The obtained silica is hydrothermal treated in the present of Ca-source so that the Ca/Si molar ratio of 1.0 for different treatment temperature such as 110, 130, 150 and 180oC. XRD and SEM of samples before and after hydrothermal treatment confirm the present of nano-Calcium Silicate Hydrate (CSH) such as Tobermorite and Xonotlite. These CSH can be used as inorganic light weight thermal insulator application. The obtained calcium silicate after hydrothermal treatment at high temperature have leave-like crystal, and these crystal interlock together.

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