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Laser photolysis of trans-dichloroethylene at 193 nm: Quantum yields of photoproducts

Paper ID Volume ID Publish Year Pages File Format Full-Text
27459 44024 2011 4 PDF Available
Title
Laser photolysis of trans-dichloroethylene at 193 nm: Quantum yields of photoproducts
Abstract

The photodissociation of trans-dichloroethylene (trans-DCE) was studied using an ArF excimer laser at 193 nm. Acetylene, chloroacetylene and hydrogen chloride are observed as products, but the chlorine molecule is not observed. The yields are determined to be 0.47 ± 0.10 and 0.35 ± 0.05 for acetylene and chloroacetylene, respectively. On the basis of the reaction mechanism, the sum of the quantum yields of hydrogen chloride molecules (Φ = 0.35) and chlorine atoms (Φ = 0.94) dissociated from trans-DCE is estimated to be greater than unity. These results indicate that two chlorine atoms are successively dissociated from the parent molecule by the photolysis at 193 nm.

► Photoproduct analysis of trans-dichloroethylene was done at 193 nm. ► The quantum yields are 0.47 and 0.35 for acetylene and chloroacetylene. ► The quantum yields were discussed for reaction mechanism. ► It shows two chlorine atoms are successively dissociated from the parent molecule.

Keywords
photodissociation product-analysis dichloroethylene absolute quantum yield
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Laser photolysis of trans-dichloroethylene at 193 nm: Quantum yields of photoproducts
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 219, Issues 2–3, 15 April 2011, Pages 200–203
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
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