Dichloromethane photodegradation using titanium catalysts

Journal Article · Thu Jun 01 00:00:00 EDT 1989 · Journal of Catalysis; (USA)

DOI:https://doi.org/10.1016/0021-9517(89)90344-8· OSTI ID:6370062

Tanguay, J F; Suib, S L; Coughlin, R W ^[1]

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1. Univ. of Connecticut, Storrs (USA)

The use of titanium dioxide and titanium aluminosilicates in the photocatalytic destruction of chlorinated hydrocarbons is investigated. Titanium-exchanged clays, titanium-pillared clays, and titanium dioxide in the amorphous, anatase, and rutile forms are used to photocatalytically degrade dichloromethane to hydrochloric acid and carbon dioxide. Bentonite clays pillared by titanium dioxide are observed to be more catalytically active than titanium-exchanged clays. Clays pillared by titanium aluminum polymeric cations display about the same catalytic activity as that of titanium-exchanged clays. The rutile form of titanium dioxide is the most active catalyst studied for the dichloromethane degradation reaction. The anatase form of titanium dioxide supported on carbon felt was also used as a catalyst. This material is about five times more active than titanium dioxide-pillared clays. Degradation of dichloromethane using any of these catalysts can be enhanced by oxygen enrichment of the reaction solution or by preirradiating the catalyst with light.

• OSTI ID: 6370062
• Journal Information: Journal of Catalysis; (USA), Vol. 117:2; ISSN 0021-9517
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
CLAYS
CATALYTIC EFFECTS
ORGANIC CHLORINE COMPOUNDS
PHOTOLYSIS
TITANIUM COMPOUNDS
TITANIUM OXIDES
ALUMINIUM OXIDES
BENTONITE
CARBON DIOXIDE
HYDROCHLORIC ACID
OXYGEN ENRICHMENT
PHASE TRANSFORMATIONS
SILICA
SYNTHESIS
VISIBLE RADIATION
WASTE WATER
WATER POLLUTION CONTROL
WATER TREATMENT
ALUMINIUM COMPOUNDS
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
CONTROL
DECOMPOSITION
ELECTROMAGNETIC RADIATION
ENRICHMENT
HYDROGEN COMPOUNDS
INORGANIC ACIDS
LIQUID WASTES
MINERALS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
POLLUTION CONTROL
RADIATIONS
SILICON COMPOUNDS
SILICON OXIDES
TRANSITION ELEMENT COMPOUNDS
WASTES
WATER
540320* - Environment
Aquatic- Chemicals Monitoring & Transport- (1990-)