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|
| Type |
Poster Presentation |
| Area |
Material Chemistry |
| Room No. |
Event Hall |
| Time |
4월 20일 (금요일) 11:00~12:30 |
| Code |
MAT.P-398 |
| Subject |
Chemical Decontamination of Chemical Warfare Agent VX using Acid-Activated Clay |
| Authors |
Sun Dal Kim*, Ji Eun Jeong, Yong Han Lee
Agency for Defense Development, Korea
|
| Abstract |
VX, one of representative nerve agents, is an extremely toxic organic synthetic compound with LD50 (the median lethal dose) of 10 mg/70 kg man and LCt50 (the lethal concentration time) of 15–50 mg•min/m3. Also, VX remains in the normal environments for 3 to 8 days due to its low volatility. Therefore, if VX is dispersed, rapid and reliable decontamination is needed. Although many different types of decontaminants have been developed for the decontamination of VX so far, there is still room for improvement in terms of decontamination efficiency and objectivity. Acid-activated clay, composed of montmorillonite mineral with hydrated aluminum silicate hydroxide, is well known as a bleaching agent, adsorbent, and catalyst in industry due to its surface acidity and wide specific surface area. These properties have led us to consider acid-activated clay as a new decontaminating agent because hydroxyl groups on the surface of aluminum silicates are capable of nucleophilic substitution reaction with VX. In this study, chemical reactivity between the acid-activated clay and VX was investigated, and the details of the chemical decontamination efficiency of VX will be presented. |
| E-mail |
ssmksd@kaist.ac.kr |
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121st General Meeting of the KCS