SURFACE AND MICROANALYTICAL STUDIES OF WHETLERITE CHARCOALS .1. EFFECTS OF AGING

被引：8

作者：

MCINTYRE, NS

MOUNT, GR

LIPSON, TC

HUMPHREY, R

HARRISON, B

LIANG, S

PAGOTTO, J

机构：

[1] UNIV GUELPH,DEPT BIOCHEM,GUELPH N1G 2W1,ONTARIO,CANADA

[2] DEF RES ESTAB,CHEM PROTECT SECT,OTTAWA K1A 0Z4,ONTARIO,CANADA

来源：

CARBON | 1991年 / 29卷 / 08期

关键词：

WHETLERITE CHARCOALS; AGING; XPS; STEM;

D O I：

10.1016/0008-6223(91)90023-C

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：

ASC Whetlerite charcoals impregnated with copper and chromium have been studied by several surface and microanalytical techniques to determine the effects of aging on the composition and microstructure. X-ray photoelectron spectroscopic (XPS) studies of absorbers not deliberately aged, showed that most of copper on the inside of each particle was present as Cu(I). Transmission microscopy showed that some of this copper is present as crystallites with diameters up to 0.1-mu-m. Natural or artificial aging in a humid atmosphere resulted in the number and size of such crystallites and a migration of some of the copper impregnants to the outer surface of the particle, where it is bonded largely as Cu(OH)2. Chromium is present in the adsorber in both Cr(III) and Cr(VI) oxidation states and it undergoes little change during aging.

引用

页码：1071 / 1079

页数：9

共 13 条

[1] AN EXAMINATION OF THE PRODUCTS FORMED ON REACTION OF HYDROGEN-CYANIDE AND CYANOGEN WITH COPPER, CHROMIUM (6+) AND COPPER CHROMIUM (6+) IMPREGNATED ACTIVATED CARBONS [J].