PHOTOOXIDATION OF EXHAUST POLLUTANTS .3. PHOTOOXIDATION OF THE CHLOROETHENES - DEGRADATION EFFICIENCIES, QUANTUM YIELDS AND PRODUCTS

被引：20

作者：

GURTLER, R ^{[1
]}

MOLLER, U ^{[1
]}

SOMMER, S ^{[1
]}

MULLER, H ^{[1
]}

KLEINERMANNS, K ^{[1
]}

机构：

[1] UNIV DUSSELDORF,INST PHYS CHEM & ELEKTROCHEM 1,W-4000 DUSSELDORF,GERMANY

来源：

CHEMOSPHERE | 1994年 / 29卷 / 08期

关键词：

D O I：

10.1016/0045-6535(94)90314-X

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The photochemical decomposition and oxidation of the chloroethenes C2H4-xClx (x=1-4) was investigated in the gas phase by irradiation with a low pressure mercury lamp in an oxygen atmosphere. Degradation efficiencies directly depend on the number of chlorine atoms both at 185 and 254 nm. The quantum yields for degradation increase from 2-3 for vinyl chloride to > 100 for tri- and tetrachloroethene at 185 nm in the 10(-3) bar concentration range. At 254 nm we measured nearly time independent quantum yields of around 10 for tri- and 40 for tetrachloroethene. The photooxidation products and their mechanism of formation are discussed in detail.

引用

页码：1671 / 1682

页数：12

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