Decontamination of Yperite using mesoporous mixed metal oxide nanocrystals.
Mixed metal oxide nanocrystals of AP-Al(2)O(3), AP-Al(2)O(3)-Fe(2)O(3), AP-Al(2)O(3)-V(2)O(5) and AP-Al(2)O(3)-CuO have been prepared by aerogel process. XRD data of prepared materials revealed the formation of nanocrystals with a size range of 3-15 nm diameters. N(2) BET investigations on these materials revealed larger values of surface area ranging from 350 to 540 m(2)/g. Reactivity of these nanocrystalline materials against Yperite was examined by gas chromatography, gas chromatography-mass spectrometry and infrared spectroscopy techniques. AP-Al(2)O(3)-Fe(2)O(3), AP-Al(2)O(3)-V(2)O(5) and AP-Al(2)O(3)-CuO nanocrystals exhibited superior decontamination properties against Yperite than AP-Al(2)O(3). The reactions exhibited pseudo first order behaviour. 100% of Yperite was found to be decontaminated on Al(2)O(3)-Fe(2)O(3), Al(2)O(3)-V(2)O(5) and Al(2)O(3)-CuO where only 75% of the same was found to be decontaminated on AP-Al(2)O(3) within 40 h.
Prasad
G K
GK
Defence Research and Development Establishment, Jhansi Road, Gwalior 474002, Andhra Pradesh, India. gkprasad@lycos.com
Ramacharyulu
P V R K
PV
Batra
K
K
Singh
Beer
B
Srivastava
A R
AR
Ganesan
K
K
Vijayaraghavan
R
R
D002619:Chemical Warfare Agents; D003666:Decontamination / Q000379:methods*; D003879:Dermatologic Agents; D053768:Metal Nanoparticles / Q000737:chemistry; D009151:Mustard Gas; D010087:Oxides; D016062:Porosity
D002619:Chemical Warfare Agents; D003879:Dermatologic Agents; D010087:Oxides; D009151:Mustard Gas