A COMPARISON OF THE ADSORPTION OF KF AND NH4F ONTO SILICA-GEL

被引：25

作者：

DUKE, CVA

MILLER, JM

CLARK, JH

KYBETT, AP

机构：

[1] BROCK UNIV,DEPT CHEM,ST CATHARINES L2S 3A1,ONTARIO,CANADA

[2] UNIV YORK,DEPT CHEM,YORK YO1 5DD,N YORKSHIRE,ENGLAND

来源：

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 1990年 / 46卷 / 09期

关键词：

D O I：

10.1016/0584-8539(90)80143-M

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

Silica gel has been fluorinated with KF, Na2SiF6, NH4F and (NH4)2SiF6, and the resulting reagents have been analysed by 19F and 29Si magic angle spinning NMR and infrared spectroscopy. Fluorination with NH4F and (NH4)2SiF6 results in the formation of (SiO)3SiF groups at the surface, where F has replaced OH, whereas the anion SiF2-6 is formed when silica is fluorinated with KF. © 1990.

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页码：1381 / 1389

页数：9

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