Thermal decomposition of 1,1,1-trichloroethane and 1,1-dichloroethene over high surface area alumina
Journal Article
·
· Langmuir; (United States)
- Pacific Northwest Lab., Richland, WA (United States)
- Univ. of Pittsburgh, PA (United States)
Mass spectrometry and X-ray photoelectron spectroscopy have been used to study the decomposition of 1,1,1-trichloroethane (CH[sub 3]CCl[sub 3]) over high surface area [gamma]-alumina (Al[sub 2]O[sub 3]) in the temperature range 300-1000 K under flow conditions. The dehydrochlorination of CH[sub 3]CCl[sub 3](g) occurs in the temperature range 400-600 K to form 1,1-dichloroethene(g) CH[sub 2]=CCl[sub 2](g) and HCl(g). Above 700 K the CH[sub 2]=CCl[sub 2](g) decomposes to form HCl(g), and carbon was deposited on the Al[sub 2]O[sub 3] surface. No evidence for the production of chloroacetylene or other major gas phase products from CH[sub 2]=CCl[sub 2] was found, indicating that CH[sub 3]CCl[sub 3] dehydrochlorination to adsorbed C and HCl(g) involves a single gas phase intermediate, CH[sub 2]=CCl[sub 2]. 29 refs., 7 figs., 1 tab.
- DOE Contract Number:
- FG06-89ER75522
- OSTI ID:
- 5525767
- Journal Information:
- Langmuir; (United States), Journal Name: Langmuir; (United States) Vol. 8:10; ISSN LANGD5; ISSN 0743-7463
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
54 ENVIRONMENTAL SCIENCES
540220 -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (1990-)
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CHALCOGENIDES
CHLORINATED ALIPHATIC HYDROCARBONS
HALOGENATED ALIPHATIC HYDROCARBONS
LAND POLLUTION
MASS SPECTROSCOPY
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POLLUTION
SPECTROSCOPY
SURFACE PROPERTIES
THERMAL DEGRADATION
WATER POLLUTION
X-RAY SPECTROSCOPY
400201* -- Chemical & Physicochemical Properties
54 ENVIRONMENTAL SCIENCES
540220 -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (1990-)
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CHALCOGENIDES
CHLORINATED ALIPHATIC HYDROCARBONS
HALOGENATED ALIPHATIC HYDROCARBONS
LAND POLLUTION
MASS SPECTROSCOPY
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POLLUTION
SPECTROSCOPY
SURFACE PROPERTIES
THERMAL DEGRADATION
WATER POLLUTION
X-RAY SPECTROSCOPY