A REAPPRAISAL OF LOW TEMPERATURE ALDEHYDE OXIDATION USING NUMERICAL ANALYSIS

被引：12

作者：

GRIFFITHS, JF

SKIRROW, G

TIPPER, CFH

机构：

来源：

COMBUSTION AND FLAME | 1968年 / 12卷 / 04期

关键词：

D O I：

10.1016/0010-2180(68)90041-2

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The free radical branched-chain mechanism of the thermal oxidation of acetaldehyde and propionaldehyde has been reconsidered by means of numerical analysis using a computer. It has been shown that (a) the concentrations of RCO and RCO3 radicals (R = CH3 or C2H5) rise extremely rapidly to quasi-stationary values, that of RCO3 being very much greater than that of RCO, (b) the primary initiation process becomes relatively unimportant kinetically after the initial stages of the oxidation, (c) branching is due to the interaction of peracid and aldehyde (a second order process with an overall activation energy of 14·5 kcal mole-1), and (d) the dependence of the maximum oxidation rate on oxygen concentration at low pressures of oxygen is probably due to decomposition of some of the RCO radicals. © 1968.

引用

页码：360 / +

页数：1

共 9 条

[1]

BELL DI, UNPUBLISHED WORK

[2]

COMBE A, 1955, REV I FRANC PETROLE, V10, P929

[3]

COMBE A, 1955, REV I FRANC PETROLE, V10, P786

[4]

GRIFFITHS JF, 1968, OXID COMBUST REV, V3, P47

[5] KINETICS OF DECOMPOSITION OF PROPIONYL RADICAL [J].

KERR, JA ;

LLOYD, AC .

CHEMICAL COMMUNICATIONS, 1967, (04) :164-&

[6]

KERR JA, PRIVATE COMMUNICATIO

[7] THE PHOTOCHEMICAL OXIDATION OF ALDEHYDES IN THE GASEOUS PHASE .3. THE ABSOLUTE VALUES OF THE VELOCITY CONSTANTS FOR THE PROPAGATING AND TERMINATING STEPS IN THE PHOTOCHEMICAL OXIDATION OF ACETALDEHYDE AND PROPIONALDEHYDE [J].

MCDOWELL, CA ;

SHARPLES, LK .

CANADIAN JOURNAL OF CHEMISTRY-REVUE CANADIENNE DE CHIMIE, 1958, 36 (01) :268-278

[8]

MCMILLAN GR, 1965, OXID COMBUST REV, V1, P83

[9] THERMAL DECOMPOSITION OF PERACETIC ACID IN VAPOR PHASE [J].

SCHMIDT, C ;

SEHON, AH .

CANADIAN JOURNAL OF CHEMISTRY-REVUE CANADIENNE DE CHIMIE, 1963, 41 (07) :1819-&

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