Fabrication of NiO/SiO2 nanocomposites using sol-gel method and optimization of gelation time using Taguchi robust design method

被引：19
|
作者：
Kamyabi-Gol, A. [1 ]
Zebarjad, S. M. [1 ]
Sajjadi, S. A. [1 ]
机构：
[1] Ferdowsi Univ Mashhad, Dept Mat Sci & Met Engn, Fac Engn, Mashhad, Iran
来源：
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2009年 / 336卷 / 1-3期
关键词：
Nanocomposite; Sol-gel; Nickel alloys; Taguchi; NI/SIO2; CATALYST; METHANE; FILMS; STEAM; HYDROGENATION; NIO; CO;
D O I：
10.1016/j.colsurfa.2008.11.045
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The present work deals with the synthesis of NiO/SiO2 nanocomposites fabricated by embedding nickel oxide particles, obtained from hexahydrated nickel nitrate (Ni(NO3)(2) center dot 6H(2)O), in a silica matrix, through sol-gel method based on hydrolysis and condensation of tetraethyl orthosilicate (TEOS) alkoxide. Due to the various factors, e. g. pH, EtOH/TEOS/H2O ratio, Si/Ni ratio, etc., influencing the gelation time of the solutions, Taguchi robust design method of system optimization was used to determine the percent of contribution (%rho) of each factor. It was found that the pH of the solutions had the most influence on the gelation time (68.76%) and the Si/Ni atomic ratio stood in second place (12.95%). It was illustrated that the molar ratio of EtOH/TEOS had the least influence on the gelation time. (C) 2008 Elsevier B. V. All rights reserved.
引用
收藏
页码：69 / 74
页数：6
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