Issue 15, 2013
From the journal:

Physical Chemistry Chemical Physics

Studies on the improved thermal stability for doped ordered mesoporous γ-alumina

Qianping Sun,a   Ying Zheng,*ab   Zhaohui Li,*b   Yong Zheng,c   Yihong Xiao,c   Guohui Caic  and  Kemei Weic  

* Corresponding authors

a College of Materials Science and Engineering, Fujian Normal University, Fuzhou, Fujian, China
E-mail: zhn63200@163.com
Fax: +86 591 83402619
Tel: +86 591 83402619

b Research Institute of Photocatalysis, Fuzhou University, Fuzhou, Fujian, China
E-mail: zhaohuili@fzu.edu.cn
Fax: +86 591 83779260
Tel: +86 591 83779260

c National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou, Fujian, China

Abstract

Ordered mesoporous γ-alumina (OMA), Ce-doped, Zr-doped and Ce–Zr-codoped OMA samples were synthesized in a sol–gel system with P123 as the soft template, both salicylic acid and citric acid as the assistant templates. The results show that the incorporations of either cerium or zirconium or both are able to improve the thermal stability of OMA. The capability to preserve the structural ordering and suppress the phase transition from γ-Al2O3 to α-Al2O3 at high temperature observed on the doped OMA is due to the formation of CeO2, ZrO2 or CexZr1−xO2 phase, which is capable of protecting OMA from the structural collapse by sintering and phase transition.

Graphical abstract: Studies on the improved thermal stability for doped ordered mesoporous γ-alumina

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Article information

DOI
https://doi.org/10.1039/C3CP50190F
Article type
Paper
Submitted
16 Jan 2013
Accepted
19 Feb 2013
First published
20 Feb 2013

Phys. Chem. Chem. Phys., 2013,15, 5670-5676

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Studies on the improved thermal stability for doped ordered mesoporous γ-alumina

Q. Sun, Y. Zheng, Z. Li, Y. Zheng, Y. Xiao, G. Cai and K. Wei, Phys. Chem. Chem. Phys., 2013, 15, 5670 DOI: 10.1039/C3CP50190F

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