Detoxification of chlorinated organic compounds using hydrodechlorination on sulfided NiO-MoO[sub 3]/[gamma]-Al[sub 2]O[sub 3] catalyst. Kinetic analysis and effect of temperature
- Universita di Napoli Federico II (Italy)
The kinetics of the catalytic hydrodechlorination (HDCl) process in the liquid phase of 1,2,3-trichlorobenzene was studied. A commercial Ni-Mo type catalyst, previously sulfided, was used. Experiments were run in the temperature range 280-350[degrees]C in a stirred tank reactor under a hydrogen pressure of approximately 100 bar. The reaction network was identified and the kinetic constants have been evaluated using Arrhenius' law and a hypothesis of first order kinetics. The data obtained have been compared with those from an earlier experiment carried out using the same catalyst in unsulfided form. The authors observed that the sulfidation treatment notably increased the activity of the catalyst. The results have also been reported in terms of the degree of detoxification. The possibility of reaching detoxification efficiency levels, even in mild operating conditions, comparable with those required by legislation for incineration of chlorinated organic compounds, have been demonstrated. 29 refs., 6 figs., 2 tabs.
- OSTI ID:
- 6923077
- Journal Information:
- Environmental Progress; (United States), Journal Name: Environmental Progress; (United States) Vol. 12:3; ISSN 0278-4491; ISSN ENVPDI
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400201* -- Chemical & Physicochemical Properties
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
DECHLORINATION
DEHALOGENATION
KINETICS
MOLYBDENUM COMPOUNDS
MOLYBDENUM OXIDES
NICKEL COMPOUNDS
NICKEL OXIDES
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
REACTION KINETICS
REFRACTORY METAL COMPOUNDS
SULFIDATION
TRANSITION ELEMENT COMPOUNDS