- Atlanta University and Clark Atlanta University Theses and Dissertations
- The adsorption and decomposition of dimethyl methylphosphonate fdmmp on reactive adsorbents, 2007
- Cox, Woodrow W.
- Contributor to Resource:
- Mitchell, Mark B.
- Date of Original:
- Degrees, Academic
- United States, Georgia, Fulton County, Atlanta, 33.749, -84.38798
- Degree Type: dissertation
Degree Name: Doctor of Philosophy (PhD)
Date of Degree: 2007
Granting Institution: Clark Atlanta University
Department/ School: Department of Chemistry
The adsorption and decomposition of DMMP on various cerium oxide samples have shown that 20% ceria on alumina was the most active adsorbent. DMMP dosing experiments on this adsorbent were performed, showing that methanol and dimethyl ether were formed through competitive processes involving surface bound methoxy groups. Methanol was formed by the reaction of DMMP with surface methoxy groups, whereas the reaction between two surface methoxy groups resulted in the formation of dimethyl ether. A colorimetric method was developed that characterized DMMP decomposition. The incorporation of ozone as a coreactant with DMMP in the reaction with 10wt% iron oxide on alumina converted approximately 2.7 times more adsorbed DMMP to gas phase products in the form of carbon dioxide and carbon monoxide as compared to the amount of methanol and dimethyl ether formed without ozone. The increased activity is due to the conversion of surface methanol to carbon dioxide and the recycling of surface sites.
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- Holding Institution:
- Clark Atlanta University