FORMATION OF FORMIC-ACID AND ORGANIC PEROXIDES IN THE OZONOLYSIS OF ETHENE WITH ADDED WATER-VAPOR

被引：91

作者：

HORIE, O

NEEB, P

LIMBACH, S

MOORTGAT, GK

机构：

[1] Max-Planck-Institut Für Chemie, Division of Atmospheric Chemistry, Mainz

来源：

GEOPHYSICAL RESEARCH LETTERS | 1994年 / 21卷 / 14期

关键词：

D O I：

10.1029/94GL01174

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Ozonolysis of C2H4 was carried out in a 580 l glass reaction vessel at 1 - 5 ppm reactant concentrations, with added water vapour. Under dry conditions ([H2O]0 = 0.5 ppm), HCHO, CO, CO2, (CHO)2O (formic acid anhydride), H2O2, and CH3OOH were identified as the reaction products. Under wet conditions ([H2O]0 = 2 x 10(4) ppm), HCOOH yields approaching ca. 20 % of the converted C2H4, were observed, while no (CHO)2O was formed. Hydroxymethyl hydroperoxide, HOCH2OOH, was observed as the major peroxide, and found to be formed only in the presence of water vapour. Direct reactions of H2O vapour with the excited CH2OO* radicals and with stabilized CH2OO radicals are postulated to explain the formation of HCOOH and HOCH2OOH in the presence of water vapour, respectively.

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页码：1523 / 1526

页数：4

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