EXTRACTION OF EXTRA-FRAMEWORK ALUMINUM IN ULTRASTABLE Y-ZEOLITES BY (NH4)2SIF6 TREATMENTS .1. PHYSICOCHEMICAL CHARACTERIZATION

被引：105

作者：

CORMA, A

FORNES, V

REY, F

机构：

[1] Instituto de Tecnología Química, UPV CSIC, Universidad Politecnica de Valencia, 46022 Valencia, C/Camino de Vera S/N

来源：

APPLIED CATALYSIS | 1990年 / 59卷 / 02期

关键词：

D O I：

10.1016/S0166-9834(00)82203-4

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：

USY samples with different silicon-to-aluminium ratios were treated with ammonium hexafluorosilicate solution to remove extra-framework aluminium (EFAL). An IR spectroscopic study showed that all the bands related to EFAL disappear and the intensity of the bands corresponding to framework hydroxyls strongly increases, showing that an important part of the charge deficiency is compensated for by cationic species of aluminium. © 1990.

引用

页码：267 / 274

页数：8

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