TROPOSPHERIC LIFETIMES OF POTENTIAL CFC REPLACEMENTS - RATE COEFFICIENTS FOR REACTION WITH THE HYDROXYL RADICAL

被引：37

作者：

COOPER, DL

CUNNINGHAM, TP

ALLAN, NL

MCCULLOCH, A

机构：

[1] UNIV BRISTOL,SCH CHEM,BRISTOL BS8 1TS,AVON,ENGLAND

[2] ICI CHEM & POLYMERS LTD,DEPT ENVIRONM,CHESHIRE WA7 4QD,ENGLAND

来源：

ATMOSPHERIC ENVIRONMENT PART A-GENERAL TOPICS | 1992年 / 26卷 / 07期

关键词：

CFC REPLACEMENTS; HYDROXYL RADICAL; REACTION RATES; OZONE DEPLETION;

D O I：

10.1016/0960-1686(92)90393-Y

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

An important consideration in the selection of potential replacements for CFCs is the rate of hydrogen-atom abstraction by the hydroxyl radical. Approximate linear correlations are investigated that allow the prediction of the relevant rate constants for partially fluorinated hydrocarbons. These rate constants may be used to infer tropospheric lifetimes. For fluorinated ethers, estimates are presented for important rate constants which have not yet been determined experimentally, and lifetimes are predicted. Differences between ethers and alkanes are discussed, and trends in the variation of lifetimes with the degree of fluorination are noted.

引用

页码：1331 / 1334

页数：4

共 13 条

[1] HIGH-PRESSURE DISCHARGE FLOW KINETICS AND FRONTIER ORBITAL MECHANISTIC ANALYSIS FOR OH + CH2CCL2, CIS-CHCLCHCL, TRANS-CHCLCHCL, CFCLCF2, AND CF2CCL2-] PRODUCTS [J].