Catalytic oxidation of dichloromethane, chloroform, and their binary mixtures over a platinum alumina catalyst

Journal Article · Thu Dec 01 00:00:00 EST 1994 · Industrial and Engineering Chemistry Research; (United States)

DOI:https://doi.org/10.1021/ie00036a026· OSTI ID:6862688

Papenmeier, D M; Rossin, J A ^[1]

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1. Geo-Centers, Inc., Aberdeen Proving Ground, MD (United States). Gunpowder Branch

The complete catalytic oxidation of dichloromethane, chloroform, and their binary mixtures was examined over a 3% Pt/[kappa]-[delta] Al[sub 2]O[sub 3] catalyst at temperature between 300 and 400 C using a fixed bed catalytic reactor. The oxidation of chloroform and dichloromethane as pure compounds was nonlinear in the concentration of chloromethane and zeroth order in the concentration of oxygen. HCl, formed during the oxidation of each chloromethane, decreased the reaction rate. Kinetic rate expressions were developed to described the oxidation of dichloromethane and chloroform as pure compounds. These expressions were derived by assuming that the reaction occurred via adsorption and decomposition of the chloromethane into an oxygen covered platinum surface, with the reaction being inhibited by the presence of HCl. From the results of the pure compound studies, reaction rate expressions were developed to describe the oxidation of dichloromethane/chloroform mixtures. The resulting reaction rate expressions accurately predicted the catalyst's performance during the oxidation of dichloromethane/chloroform mixtures over a wide range of conditions.

• OSTI ID: 6862688
• Journal Information: Industrial and Engineering Chemistry Research; (United States), Vol. 33:12; ISSN 0888-5885
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
CHLOROFORM
OXIDATION
METHYLENE CHLORIDE
PLATINUM
CATALYTIC EFFECTS
AIR POLLUTION CONTROL
ALUMINIUM OXIDES
CATALYST SUPPORTS
HYDROCHLORIC ACID
INDUSTRIAL WASTES
KINETIC EQUATIONS
VOLATILE MATTER
ALUMINIUM COMPOUNDS
CHALCOGENIDES
CHEMICAL REACTIONS
CHLORINATED ALIPHATIC HYDROCARBONS
CHLORINE COMPOUNDS
CONTROL
ELEMENTS
EQUATIONS
HALOGEN COMPOUNDS
HALOGENATED ALIPHATIC HYDROCARBONS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
MATTER
METALS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PLATINUM METALS
POLLUTION CONTROL
TRANSITION ELEMENTS
WASTES
540120* - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)
320305 - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Industrial Waste Management