title: Decomposition of 2-chloroethylethylsulfide on copper oxides to detoxify polymer-based spherical activated carbons from chemical warfare agents.
abstract: For the decomposition of chemical warfare agents, a hybrid material concept was applied. This consists of a copper oxide-containing phase as a component with reactive functionality supported on polymer-based spherical activated carbon (PBSAC) as a component with adsorptive functionality. A corresponding hybrid material was prepared by impregnation of PBSAC with copper(II)nitrate and subsequent calcination at 673K. The copper phase exists predominantly as copper(I)oxide which is homogeneously distributed over the PBSAC particles. The hybrid material containing 16 wt.% copper on PBSAC is capable of self-detoxifying the mustard gas surrogate 2-chloroethylethylsulfide (CEES) at room temperature. The decomposition is related to the breakthrough behavior of the reactant CEES, which displaces the reaction product ethylvinylsulfide (EVS). This leads to a combined breakthrough of CEES and EVS. The decomposition of CEES is shown to occur catalytically over the copper-containing PBSAC material. Thus, the hybrid material can even be considered to be self-cleaning.
authors.affiliation: Blücher GmbH, Mettmanner Str. 25, 40699 Erkrath, Germany. Electronic address: sven.fichtner@adsor-tech.com.
authors.forename: S
authors.initials: S
authors.lastname: Fichtner
authors.forename: J
authors.initials: J
authors.lastname: Hofmann
authors.forename: A
authors.initials: A
authors.lastname: Möller
authors.forename: C
authors.initials: C
authors.lastname: Schrage
authors.forename: J M
authors.initials: JM
authors.lastname: Giebelhausen
authors.forename: B
authors.initials: B
authors.lastname: Böhringer
authors.forename: R
authors.initials: R
authors.lastname: Gläser
mesh_terms: D002244:Carbon / Q000737:chemistry; D002619:Chemical Warfare Agents / Q000737:chemistry*; D003300:Copper / Q000737:chemistry*; D009151:Mustard Gas / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry*; D011137:Polystyrenes / Q000737:chemistry
chemical_list: D002619:Chemical Warfare Agents; D010087:Oxides; D011137:Polystyrenes; D002244:Carbon; D003300:Copper; D009151:Mustard Gas
keywords: 2-Chloroethylethylsulfide; Adsorption; Heterogeneous catalysis; Polymer-based spherical activated carbon; Self-detoxification; Supported copper oxides