Adsorption and decomposition of 2-chloroethylethylsulfide (CEES) on expanded graphite/metal oxides composites

作者：Hung Wei Che; Wu Kuo Hui^*; Huang Wen Chien; Cheng Ken Fa; Wang Je Chuang

来源：Materials Express, 2018, 8(3): 279-287.

DOI：10.1166/mex.2018.1427

• Expanded Graphite
• Metal Oxides
• 2-Chloroethylethylsulfide
• Decontamination

Composites based on expanded graphite (EG) and metal oxides (MOs) were prepared by an explosive combustion and blending method. A metal oxide (Ag2O, CuO or ZnO)-containing phase was employed as a component with reactive functionality, which was supported on EG as a component with adsorptive functionality. The reaction products of the adsorptive degradation of 2-chloroethylethylsulfide (CEES), a simulant of the well-known chemical warfare agent sulfur mustard (HD), were characterized by solid-state and solution NMR techniques. The elimination and hydrolysis reactions in the decontamination of CEES were shown to occur catalytically over the EG/Ag2O composite. The molecular adsorption products of OCu center dot center dot center dot SC4H9Cl surface complexes and OZnO-CH2CH2SC2H5 surface-bound alkoxy species contributed to the decontamination of CEES on the surface of the EG/CuO and EG/ZnO composites, respectively. All reaction products exhibited a lower toxicity than CEES, meaning that the EG/MO composites exhibited self-detoxifying properties.

• 出版日期2018-6
• 单位中国人民解放军国防大学