SYNTHESIS AND CHARACTERIZATION OF TITANIUM-PILLARED MONTMORILLONITES

被引：54

作者：

BOUDALI, LK

GHORBEL, A

TICHIT, D

CHICHE, B

DUTARTRE, R

FIGUERAS, F

机构：

[1] FAC SCI TUNIS, DEPT CHIM, CHIM MAT & CATAL LAB, TUNIS, TUNISIA

[2] ENSCM, CHIM ORGAN PHYS & CINET CHIM LAB, CNRS, UA 418, F-34075 MONTPELLIER, FRANCE

来源：

MICROPOROUS MATERIALS | 1994年 / 2卷 / 06期

关键词：

TITANIUM-PILLARED CLAY; INTERCALATION; ACIDITY; MONTMORILLONITE; SULFATED TIO2;

D O I：

10.1016/0927-6513(93)E0068-R

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Titanium-pillared inter-layered clays (TiPILCs) were prepared by intercalating polymeric cationic species in clay layers. The intercalation was obtained by hydrolysis of TiCl4 with HCl (TiPILC-Cl) and H2SO4 (TiPILC-S). The influence of the determinant parameters viz. the H+/Ti and Ti/clay ratios, was considered and experimental conditions leading to high specific surface areas and well defined structures of the pillared montmorillonites were determined. The structural properties of the resulting pillars suggest a different nature of the polymeric cationic species obtained by varying the acid. Smaller specific areas and stronger Bronsted acidic sites are observed on TiPILC-S. Similar sites as those described for SO4--TiO2 superacids are proposed. These results might contribute to the development of a new catalyst family.

引用

页码：525 / 535

页数：11

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