title: Evaluation of the SO(2) and NH(3) gas adsorption properties of CuO/ZnO/Mn(3)O(4) and CuO/ZnO/NiO ternary impregnated activated carbon using combinatorial materials science methods.
abstract: Impregnated activated carbons (IAC) are widely used materials for the removal of toxic gases in personal respiratory protection applications. The combinatorial method has been employed to prepare IACs containing different types of metal oxides in various proportions and evaluate their adsorption performance for low molecular weight gases, such as SO(2) and NH(3), under dry conditions. Among the metal oxides used for the study, Mn(3)O(4) was found to have the highest capacity for retaining SO(2) gas under dry conditions. NiO and ZnO were found to have similar NH(3) adsorption capacities which are higher than the NH(3) capacities observed for the other metal oxide impregnants used in the study. Although Cu- or Zn-based impregnants and their combinations have been extensively studied and used as gas adsorbents, neither Mn(3)O(4) nor NiO have been incorporated in the formulations used. In this study, ternary libraries of IACs with various combinations of CuO/ZnO/Mn(3)O(4) and CuO/ZnO/NiO were studied and evaluated for their adsorption of SO(2) and NH(3) gases. Combinations of CuO, ZnO, and Mn(3)O(4) were found to have the potential to be multigas adsorbents compared to formulations that contain NiO.
authors.affiliation: Department of Physics and Atmospheric Science, Dalhousie University, Halifax, Nova Scotia, Canada B3H 3J5.
authors.forename: Jennifer V
authors.initials: JV
authors.lastname: Romero
authors.forename: Jock W H
authors.initials: JW
authors.lastname: Smith
authors.forename: Braden M
authors.initials: BM
authors.lastname: Sullivan
authors.forename: Landan
authors.initials: L
authors.lastname: Macdonald
authors.forename: Lisa M
authors.initials: LM
authors.lastname: Croll
authors.forename: J R
authors.initials: JR
authors.lastname: Dahn
mesh_terms: D000327:Adsorption; D000641:Ammonia / Q000737:chemistry*; D002244:Carbon / Q000737:chemistry*; D020650:Combinatorial Chemistry Techniques; D003300:Copper / Q000737:chemistry*; D005740:Gases / Q000737:chemistry; D017895:Manganese Compounds / Q000737:chemistry*; D009532:Nickel / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry*; D013458:Sulfur Dioxide / Q000737:chemistry*; D013499:Surface Properties; D015034:Zinc Oxide / Q000737:chemistry*
chemical_list: D005740:Gases; D017895:Manganese Compounds; D010087:Oxides; D013458:Sulfur Dioxide; C027424:manganese oxide; D002244:Carbon; D000641:Ammonia; D003300:Copper; D009532:Nickel; C028007:nickel monoxide; D015034:Zinc Oxide; C030973:cupric oxide