Synthesis of mesoporous Al2O3 macrospheres using the biopolymer chitosan as a template:: A novel active catalyst system for CO2 reforming of methane

被引：56

作者：

Fajardo, HV

Martins, AO

de Almeida, RM

Noda, LK

Probst, LFD

Carreño, NLV

Valentini, A

机构：

[1] Univ Fed Santa Catarina, Dept Quim, BR-88040900 Florianopolis, SC, Brazil

[2] Univ Fed Sergipe, Dept Quim, BR-49100000 Sao Cristovao, SE, Brazil

[3] Univ Fed Ceara, Dept Quim Analit & Fisicoquim, BR-60451970 Fortaleza, Ceara, Brazil

来源：

MATERIALS LETTERS | 2005年 / 59卷 / 29-30期

基金：

巴西圣保罗研究基金会;

关键词：

catalysts; porosity; alumina; reforming of methane;

D O I：

10.1016/j.matlet.2005.07.071

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A new and simple method to prepare alumina containing mainly mesopores is described. This alumina has a high surface area (464 m(2)/g) and a large pore volume ranging from about 0.35 to 0.65 cm(3)/g, The present method was developed using a biopolymer (chitosan) and Al solution. The Al-chitosan solution was added to NH4OH solution in the form of drops. A hybrid macrosphere compound of aluminum hydroxide and organic polymer is formed. Through polymer elimination by thermal treatment, porous Al2O3 spheres with a high specific surface area are obtained. The Ni-impregnated Al2O3 spheres showed a high catalytic activity and stability for dry reforming of methane at 650 degrees C and a CH4/CO2 = 1 molar ratio. (C) 2005 Elsevier B.V. All rights reserved.

引用

页码：3963 / 3967

页数：5

共 22 条

[1] A sol-gel approach for the room temperature synthesis of Al-containing micelle-templated silica [J].