Catalytic hydroprocessing of chloropyridinols

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

OSTI ID:6610944

Kim, D I; Allen, D T ^[1]

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1. Univ. of California, Los Angeles, CA (United States). Dept. of Chemical Engineering

The hydrodechlorination and hydrodeoxygenation of 2-chloro-3-pyridinol, 5-chloro-3-pyridinol, and 6-chloro-2-pyridinol were examined using a packed bed microreactor operating at 1,500 psi and at temperatures between 275 and 325 C. A commercial NiMo catalyst was used. Dechlorination to pyridinols was the dominant pathway with some subsequent deoxygenation. The overall rates and activation energies (18--35 kcal/mol) of dechlorination were comparable to the dechlorination rate parameters observed for chlorinated benzenes and chlorinated phenols, indicating that the pyridinic nitrogen has only a minor effect on dechlorination rates. Differences in dechlorination rates between the chloropyridinols were qualitatively explained based on the electron donating properties of the hydroxyl group and steric effects. Such studies are critical for evaluating the utility of catalytic hydroprocessing in waste management since waste streams are likely to contain a variety of contaminants and some chlorinated organics are multifunctional (e.g., chlorophenol).

• OSTI ID: 6610944
• Report Number(s): CONF-940301-; CODEN: IECRED
• Journal Information: Industrial and Engineering Chemistry Research; (United States), Vol. 33:12; Conference: 207. spring national meeting of the American Chemical Society (ACS), San Diego, CA (United States), 13-18 Mar 1994; ISSN 0888-5885
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
54 ENVIRONMENTAL SCIENCES
ORGANIC CHLORINE COMPOUNDS
DECHLORINATION
HYDROGENATION
REDUCTION
ACTIVATION ENERGY
ALUMINIUM OXIDES
CATALYST SUPPORTS
CATALYTIC EFFECTS
CHEMICAL REACTION KINETICS
EXPERIMENTAL DATA
MOLYBDENUM
NICKEL
ALUMINIUM COMPOUNDS
CHALCOGENIDES
CHEMICAL REACTIONS
DATA
DEHALOGENATION
ELEMENTS
ENERGY
INFORMATION
KINETICS
METALS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
REACTION KINETICS
TRANSITION ELEMENTS
320305* - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Industrial Waste Management
540220 - Environment
Terrestrial- Chemicals Monitoring & Transport- (1990-)