The investigation of copper-based impregnated activated carbons prepared from water-soluble materials for broad spectrum respirator applications

被引：22

作者：

Smith, J. W. H. ^{[1
]}

Westreich, P. ^{[1
]}

Abdellatif, H. ^{[1
]}

Filbee-Dexter, P. ^{[1
]}

Smith, A. J. ^{[1
]}

Wood, T. E. ^{[2
]}

Croll, L. M. ^{[3
]}

Reynolds, J. H. ^{[3
]}

Dahn, J. R. ^{[1
,4
]}

机构：

[1] Dalhousie Univ, Dept Phys & Atmospher Sci, Halifax, NS B3H 3J5, Canada

[2] 3M Co, St Paul, MN 55144 USA

[3] 3M Canada Co, Brockville, ON K6V 5V8, Canada

[4] Dalhousie Univ, Dept Chem, Halifax, NS B3H 4J3, Canada

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2010年 / 180卷 / 1-3期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Impregnated activated carbon; lmpregnant distribution; Nitric acid treatment; Gas filtration capacity; Relative stoichiometric ratio of reaction; ADSORPTION; NITROGEN; AMMONIA; SURFACE; SO2;

D O I：

10.1016/j.jhazmat.2010.04.047

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The preparation of impregnated activated carbons (IACs) from aqueous, copper-containing solutions for broad spectrum gas filtration applications is studied here. Several samples were studied to determine the effect that impregnant loading, impregnant distribution and impregnant recipe had on the overall performance. Dynamic flow testing was used to determine the gas filtration capacity of the IAC samples versus a variety of challenge gases. X-ray diffraction (XRD). scanning electron microscopy (SEM) and energy dispersive X-ray analysis (EDX) were used to characterize the impregnant distribution on the carbon as a function of impregnant loading. Oven tests were performed to determine the thermal stability of the IAC samples exposed to elevated temperatures. The role impregnant distribution plays in gas filtration capacity and the overall performance of the IAC samples is discussed. The IAC samples prepared in this work were found to have gas filtration capacities as good as or better than broad spectrum respirator carbon samples prepared from the patent literature. IACs impregnated with an aqueous 2.4 M Cu(NO3)(2)/0.04 M H-3 PO4 center dot 12MoO(3)/4 M HNO3 solution that were heated to 200 degrees C under argon were found to have the best overall performance of the samples studied in this work. (C) 2010 Elsevier By. All rights reserved.

引用

页码：419 / 428

页数：10

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