title: Gas adsorption properties of the ternary ZnO/CuO/CuCl(2) impregnated activated carbon system for multigas respirator applications assessed through combinatorial methods and dynamic adsorption studies.
abstract: A ternary library of 64 ZnO/CuO/CuCl(2) impregnated activated carbon samples was synthesized and screened automatically using a combinatorial (combi) method. The ability of the samples to adsorb toxic gases was screened gravimetrically. The stoichiometric ratio of reaction (SRR) between the moles of toxicant and the total moles of impregnant was obtained from the calculated mass increase of the samples after chemisorption, with a high SRR indicating high efficiency of toxicant removal. The combi samples that exhibited good dry SO(2) and NH(3) adsorption were prepared in bulk using the incipient wetness method and were evaluated for multigas respirator function by dynamic adsorption studies of SO(2), NH(3), HCN, and C(6)H(12) gases in either dry or humid conditions at ambient temperature. The bulk samples showed equivalent gas adsorption capacities when exposed to the different challenge gases indicating the value of the combi method for initial screening. Cu(2)Cl(OH)(3) was identified to be a potential multigas adsorbent.
authors: Department of Physics, Dalhousie University , Halifax, Nova Scotia, Canada.
authors: Jennifer V
authors: JV
authors: Romero
authors: Jock W H
authors: JW
authors: Smith
authors: Braden M
authors: BM
authors: Sullivan
authors: Matthew G
authors: MG
authors: Mallay
authors: Lisa M
authors: LM
authors: Croll
authors: Judy A
authors: JA
authors: Reynolds
authors: Carrie
authors: C
authors: Andress
authors: Monika
authors: M
authors: Simon
authors: Jeff R
authors: JR
authors: Dahn
mesh_terms: D000327:Adsorption; D000641:Ammonia / Q000737:chemistry; D002244:Carbon / Q000737:chemistry*; D020650:Combinatorial Chemistry Techniques / Q000379:methods*; D003300:Copper / Q000737:chemistry*; D005740:Gases / Q000737:chemistry*; D006856:Hydrogen Cyanide / Q000737:chemistry; D010087:Oxides / Q000737:chemistry; D012134:Respiratory Protective Devices; D013457:Sulfur Compounds / Q000737:chemistry; D015034:Zinc Oxide / Q000737:chemistry*
chemical_list: D005740:Gases; D010087:Oxides; D013457:Sulfur Compounds; C405951:sulfur monoxide; D006856:Hydrogen Cyanide; D002244:Carbon; D000641:Ammonia; D003300:Copper; C029892:cupric chloride; D015034:Zinc Oxide; C030973:cupric oxide