Characterization of Spanish sepiolites by high-resolution solid-state NMR

被引：26

作者：

Aramendia, MA ^{[1
]}

Borau, V ^{[1
]}

Jimenez, C ^{[1
]}

Marinas, JM ^{[1
]}

Ruiz, JR ^{[1
]}

机构：

[1] UNIV CORDOBA,FAC CIENCIAS,DEPT QUIM ORGAN,E-14004 CORDOBA,SPAIN

来源：

SOLID STATE NUCLEAR MAGNETIC RESONANCE | 1997年 / 8卷 / 04期

关键词：

sepiolite; acid-treatment;

D O I：

10.1016/S0926-2040(97)00009-X

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：

Si-29 MMR (MAS and CP/MAS) and H-1 MAS NMR techniques were used to characterize four sepiolites, two of natural origin (commercialized under the names Pangel and Pansil) and the other two obtained from them by treatment with 2 M or 4 M H2SO4, respectively. These techniques were used to identify the structural and surface changes undergone by sepiolites by the effects of acid treatment and calcination. Various types of Si were detected; also, treatment with 4 M H2SO4 destroyed the sepiolite and produced fibrous silica. (C) 1997 Elsevier Science B.V.

引用

页码：251 / 256

页数：6

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