ANALYSIS AND COMPARISON OF THE MICROPOROSITY IN AL-PILLARED, ZR-PILLARED AND TI-PILLARED CLAYS

被引：52

作者：

GIL, A ^{[1
]}

MASSINON, A ^{[1
]}

GRANGE, P ^{[1
]}

机构：

[1] UNIV CATHOLIQUE LOUVAIN,UNITE CATALYSE & CHIM MAT DIVISES,B-1348 LOUVAIN,BELGIUM

来源：

MICROPOROUS MATERIALS | 1995年 / 4卷 / 05期

关键词：

ALUMINUM-PILLARED CLAY; ZIRCONIUM-PILLARED CLAY; TITANIUM-PILLARED CLAY; NITROGEN ADSORPTION; MICROPOROUS ACCESSIBILITY;

D O I：

10.1016/0927-6513(95)00021-Z

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The microporous accessibility of three pillared clays (Al-, Zr- and Ti-PILC) and two zeolites as references have been studied. Nitrogen adsorption data obtained at very low relative pressures were used to obtain a thorough characterization of the microporosity of the samples. The Dubinin-Radushkevich (DR) formalism was used to describe the volume filing of micropores and the energetic heterogeneity of microporous solids. The adsorption potential distributions and the Horvath-Kawazoe model confirm the existence of two sizes of micropores in the pillared clays and one size in the zeolites. Nevertheless, the two zeolites show a larger microporosity than the three pillared clays studied.

引用

页码：369 / 378

页数：10

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