PASSIVATION OF SNF2 BY A COATING OF SNO2 FORMED ON HEATING IN AIR

被引：13

作者：

DENES, G

LAOU, E

机构：

[1] Laboratory of Solid State Chemistry and Mossbauer Spectroscopy, Materials Research Group (MRGGRM), Department of Chemistry and Biochemistry, Concordia University, Montréal, H3G 1M8, Québec

来源：

HYPERFINE INTERACTIONS | 1994年 / 92卷 / 1-4期

关键词：

D O I：

10.1007/BF02065727

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

X-ray powder diffraction and tin-119 Mossbauer spectroscopy were used to study samples of SnF2 heated in open teflon containers under air. The reactivity was found to be low at 100 OC and to increase dramatically with temperature. Passivation by a layer of refractory SnO2 that coats the surface of the particles is very effective at low temperature. The reactivity increases at the alpha --> gamma transition and close to the melting point, since both result in bond breaking and therefore offers opportunities for chemical attack.

引用

页码：1013 / 1018

页数：6

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