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Author Gupta, M. C. ♦ Viswanath, S. G.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION ♦ PVC ♦ THERMAL DEGRADATION ♦ CHEMICAL REACTION KINETICS ♦ OXIDES ♦ CATALYTIC EFFECTS ♦ DEHYDROGENATION
Abstract Thermal degradation of poly(vinyl chloride) has been studied in the presence of metal oxides by a thermogravimetric method. It follows a two-step mechanism. In the first step chlorine free radical is formed as in the case of pure PVC, and in the second step chlorine free radical replaces oxygen from metal oxide to form metal chloride and oxygen free radical. Subsequently, the oxygen free radical abstracts hydrogen from PVC. Formation of metal chloride is the rate-controlling step. The metal chlorides formed during the thermal degradation either volatilize or decompose simultaneously to lower metallic chlorides depending on the boiling point or the volatilization temperature.
ISSN 08885885
Educational Use Research
Learning Resource Type Article
Publisher Date 1998-07-01
Publisher Place United States
Journal Industrial and Engineering Chemistry Research
Volume Number 37
Issue Number 7


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