Reaction of atomically clean aluminum and chemically modified aluminum with alkyl halides
The interaction of methyl halides with an atomically clean A(111) surface has been investigated using high-resolution electron energy loss spectroscopy (EELS), Auger electron spectroscopy (AES), and temperature programmed desorption (TPD). CH/sub 3/I adsorbs on A(111) both molecularly and dissociatively at 150 K; adsorbed CH/sub 3/I decomposes to CH/sub (a)/ and I/sub (a)/ in the temperature range of 250-450 K. No surface reaction of CH/sub 3/Cl or CH/sub 3/Br with clean or chemically modified Al(111) was observed, and a reactive sticking coefficient of < 10/sup -5/ was estimated in the temperature range of 135-500 K (CH/sub 3/Cl) or at 150 K (CH/sub 3/Br). Reasons for the reactivity differences of the methyl halides toward the Al(111) surface are discussed. These findings on Al, and their implication in Grignard reaction mechanisms, are compared with recent studies by another group on a Mg surface.
- Research Organization:
- Univ. of Pittsburgh, PA
- OSTI ID:
- 6808932
- Journal Information:
- J. Am. Chem. Soc.; (United States), Vol. 109:6
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ALUMINIUM
CHEMICAL REACTIONS
SORPTIVE PROPERTIES
SURFACE PROPERTIES
METHYL BROMIDE
ADSORPTION
METHYL CHLORIDE
METHYL IODIDE
AUGER ELECTRON SPECTROSCOPY
DESORPTION
ENERGY-LOSS SPECTROSCOPY
EXPERIMENTAL DATA
HIGH TEMPERATURE
LOW TEMPERATURE
MEDIUM TEMPERATURE
SURFACE CLEANING
SURFACE TREATMENTS
SURFACES
BROMINATED ALIPHATIC HYDROCARBONS
CHLORINATED ALIPHATIC HYDROCARBONS
CLEANING
DATA
ELECTRON SPECTROSCOPY
ELEMENTS
HALOGENATED ALIPHATIC HYDROCARBONS
INFORMATION
IODINATED ALIPHATIC HYDROCARBONS
METALS
NUMERICAL DATA
ORGANIC BROMINE COMPOUNDS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC IODINE COMPOUNDS
SORPTION
SPECTROSCOPY
SURFACE FINISHING
400201* - Chemical & Physicochemical Properties