Adsorption characteristics of natural erionite, clinoptilolite and mordenite zeolites from Mexico

被引：38

作者：

Hernández, MA

Corona, L

Rojas, F

机构：

[1] Univ Autonoma Metropolitana Iztapalapa, Dept Quim, Mexico City 09340, DF, Mexico

[2] Univ Autonoma Puebla, Inst Ciencias, Ctr Quim Ingn Quim, Puebla 72570, Mexico

来源：

ADSORPTION-JOURNAL OF THE INTERNATIONAL ADSORPTION SOCIETY | 2000年 / 6卷 / 01期

关键词：

natural zeolites; erionite; clinoptilolite; mordenite; low-pressure hysteresis;

D O I：

10.1023/A:1008943031277

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Nitrogen sorption properties inherent to some natural zeolites from Mexico, such as erionites, clinoptilolites and mordenites, are determined and compared with corresponding sorption properties of homologous synthetic or acid modified forms. The mineralogies of natural zeolites are determined by X-ray analysis. N-2 low-pressure hysteresis loops are displayed by some substrata while are absent in others; key factors for this phenomenon to occur are the micropore structure and the ion-exchange treatment to which the natural precursors are subjected. Argon sorption at 76 K on selected samples evidence further the strong adsorption and the pore blocking effects at pore necks in the zeolites.

引用

页码：33 / 45

页数：13

共 15 条

[1]

[Anonymous], FUNDAMENTALS ADSORPT

[2]

BRECK DW, 1974, ZEOLITE MOL SIEVES, P60

[3]

CHIANG AST, 1997, EQUILIBRIA DYNAMICS, P519

[4]

Dubinin M.M., 1971, ADV CHEM SER, V102, P69

[5]

GREGG SJ, 1982, ADSORPTION SURFACE

[6]

INAGAKI M, 1997, CHARACTERIZATION POR, V4, P156

[7]

JACOBS PA, 1987, SYNTHESIS HIGH SILIC, P321

[8]

JOHNSON VJ, 1961, 6056 WADD US AIR FOR

[9]

Kaneko K, 1997, STUD SURF SCI CATAL, V104, P679

[10]

MADDOX MW, 1997, CHARACTERISATION POR, V4, P65

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