Continuous elimination of gaseous dimethyl methylphosphonate by a photocatalytic flow reaction system

Autor:	Yasuo Seto, Koji Takeuchi, Tsutomu Hirakawa, Taizo Sano, Hiromichi Ichinose, Nobuaki Mera, Nobuaki Negishi
Rok vydání:	2014
Předmět:	Process Chemistry and Technology Dimethyl methylphosphonate Humidity Photocatalytic reaction Photochemistry Catalysis Volumetric flow rate chemistry.chemical_compound Adsorption chemistry Photocatalysis Relative humidity Reaction system General Environmental Science
Zdroj:	Applied Catalysis B: Environmental. 146:71-78
ISSN:	0926-3373
DOI:	10.1016/j.apcatb.2013.04.013
Popis:	Dimethyl methylphosphonate (DMMP) removal by a continuous photocatalytic reaction system at different levels of humidity (RH) was investigated for the purpose of allowing rescue operations at disaster sites over an extended period of time when applied to gas masks or other protective gear. With a high flow rate of air (10 L/min), around 85% of the 0.17 μmol/L DMMP was successfully eliminated by this photocatalytic reaction system regardless of relative humidity. On the other hand, the formation of intermediates on the TiO2 surface indicated that photocatalytic activity was dependent on relative humidity, and during a 5-h test period, the ratio of photocatalytic DMMP conversion reached 74.5% at 100% RH. DMMP adsorption onto the TiO2 surface was found to be quite strong; DMMP removal was observed despite low humidity and dark conditions
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::740083ffa7706d51951ae2fbc2450ecf https://doi.org/10.1016/j.apcatb.2013.04.013 Zobrazit plný text záznamu Full Text from ScienceDirect