Synthesis and surface properties of Ti-containing mesoporous aluminophosphates. A comparison with Ti-grafted mesoporous silica Ti-MCM-41

被引：19
|
作者：
Gianotti, E
Oliveira, EC
Coluccia, S
Pastore, HO
Marchese, L
机构：
[1] Univ Turin, Dipartimento Chim IFM, I-10125 Turin, Italy
[2] Univ Estadual Campinas, Inst Quim, BR-13083970 Campinas, SP, Brazil
[3] Univ Piemonte Orientale, Dipartimento Sci & Tecnol Avanzate, I-15100 Alessandria, Italy
来源：
INORGANICA CHIMICA ACTA | 2003年 / 349卷
关键词：
mesostructures; aluminophosphates; titanium-aluminophosphates; FTIR spectroscopy; surface acidity; DR UV-Vis spectroscopy;
D O I：
10.1016/S0020-1693(03)00031-8
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Mesoporous aluminophosphates (ALPO) was synthesised using cetyltrimethylammonium bromide (CTMABr) as a structure-directing agent, phosphoric acid and aluminum sulfate as sources of structure elements. Ti(IV) ions were introduced into mesoporous ALPO by grafting titanocene dichloride, [Cp2TiCl2], onto the P-OH and Al-OH groups exposed in the channels. FTIR spectroscopy was used to study surface hydroxyls, and by the use of NH3 as molecular probe, to assess the surface acidity of both meso-ALPO and meso-Ti-ALPO materials. The coordination of Ti(IV) centres in Ti-ALPO material was studied using DR UV-Vis spectroscopy. (C) 2003 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：259 / 264
页数：6
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