Studies of reactions on metal-impregnated charcoal: Characterization and the thermal desorption of water

被引：11

作者：

Biesinger, MC ^{[1
]}

McIntyre, NS ^{[1
]}

Bello, I ^{[1
]}

Liang, S ^{[1
]}

机构：

[1] DEF RES ESTAB SUFFIELD,PHYS PROTECT SECT,MEDICINE HAT,AB T1A 8K6,CANADA

来源：

CARBON | 1997年 / 35卷 / 04期

关键词：

charcoal; photoelectron spectroscopy; thermal analysis; surface properties; reactivity;

D O I：

10.1016/S0008-6223(96)00154-6

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：

Copper- and chromium-impregnated and non-impregnated charcoals have been characterized by X-ray photoelectron spectroscopy and scanning electron microscopy, showing the composition and distribution of elements in the charcoal substrate. Water (as D2O) was reacted with dried charcoals and its gradual thermal desorption was studied by mass spectrometry. The impregnated charcoal retains substantially more water over a wider temperature span. It is suggested that Cr3+, in particular, increases the number of high-energy adsorption sites. Thermal desorption also results in decomposition of metal hydroxides and reduction of Cu2+ to Cu+ and Cr6+ to Cr3+. (C) 1997 Elsevier Science Ltd.

引用

页码：475 / 482

页数：8

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