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Decomposition of azobisisobutyronitrile in the presence of organoaluminum compounds (in Russian)

Journal Article · · Bull. Acad. Sci. USSR, Div. Chem. Sci. (Engl. Transl.); (United States)
DOI:https://doi.org/10.1007/BF00954215· OSTI ID:6416940
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The rate of decomposition of azobisisobutyronitrile (AIBN) substantially increases in the presence of organoaluminum compounds (OAC) and in an OAC medium. In these systems, not only thermal, but also catalytic decomposition takes place. The catalytic decomposition event is preceded by the complexation of AIBN with OAC. In solvents containing heteroatoms, no catalytic decomposition of AIBN is observed. The decomposition of AIBN in the presence of OAC proceeds by a free-radical mechanism. The primary isobutyronitrile radicals initiate the polymerization of the vinyl monomers and react highly selectively with the OAC. The rate of the reaction of the isobutyronitrile radicals with OAC sharply decreases on transition from triethyl-aluminum to mono- and diethylaluminum chlorides. In the presence of OAC, the gaseous decomposition products of AIBN contain nitrogen, ethane, and ethylene. An increased molar ratio of hydrocarbons to nitrogen in the case of the AIBN-triethyl-aluminum systems, indicates the occurrence of a chain-like, free radical condensation of OAC.

Research Organization:
Institute of Chemical Physics, Chernogolovka, USSR
OSTI ID:
6416940
Journal Information:
Bull. Acad. Sci. USSR, Div. Chem. Sci. (Engl. Transl.); (United States), Journal Name: Bull. Acad. Sci. USSR, Div. Chem. Sci. (Engl. Transl.); (United States) Vol. 35:4; ISSN BACCA
Country of Publication:
United States
Language:
Russian

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Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALKANES
ALKENES
ALUMINIUM CHLORIDES
ALUMINIUM COMPLEXES
ALUMINIUM COMPOUNDS
AZO COMPOUNDS
CATALYSIS
CATALYTIC EFFECTS
CHEMICAL REACTION KINETICS
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
CHLORIDES
CHLORINE COMPOUNDS
COMPLEXES
COMPLEXOMETRY
DECOMPOSITION
ELEMENTS
ETHANE
ETHYLENE
HALIDES
HALOGEN COMPOUNDS
HOMOGENEOUS CATALYSIS
HYDROCARBONS
KINETICS
MONOMERS
NITRILES
NITROGEN
NONMETALS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANOMETALLIC COMPOUNDS
POLYMERIZATION
REACTION KINETICS
VINYL MONOMERS
YIELDS