Kinetyka utleniania izomerycznych metoksy-(1-metyloetylo)benzenów

Jan Zawadiak; Jörg Talbiersky; Bartłomiej Jakubowski

Kinetyka utleniania izomerycznych metoksy-(1-metyloetylo)benzenów

Translated title of the contribution: The kinetics of oxidation of isomeric methoxy-(1-methylethyl)benzenes

Jan Zawadiak
, Jörg Talbiersky
, Bartłomiej Jakubowski

Department of Chemical Organic Technology and Petrochemistry (RCH/RCH5)

Rütgers Chemicals AG
Silesian University of Technology

Research output: Contribution to journal › Article › peer-review

Abstract

The kinetics of noncatalyzed liquid-phase oxidation of 1-methoxy-2- (-3-, and -4)-(1-isopropyl)benzenes (1,2-, 1,3-, 1,4-MiPB) with oxygen was studied by measuring the uptake of O₂ over 50-120°C. At 50°C (120°C), the oxidizabilities of 1,2-, 1,3- and 1,4-MiPB evaluated as (k _p/k_t^1/2) from the kinetic model (a free-radical and chain mechanism), r_ox = r_i^1/2 (k_p/k_t^1/2)C_RH (r_ox, r_i - rates of oxidation and initiation, k_p, k_t - propagation and termination rate constants, C_RH - concentration of MiPB), were 0 (0.2), 1 (5.9) and 3.7 (16.3) mL/(mol·s)^1/2, resp. Over 50-74°C and 74-120°C, 1,4-MiPB was resp. more and less oxidizable than cumene. For 1,3- and 1,4-MiPB, the total activation energies were 26±2 and 22±2 kJ/mol, resp., compared with the 28±1 for cumene.

Translated title of the contribution	The kinetics of oxidation of isomeric methoxy-(1-methylethyl)benzenes
Original language	Polish
Pages (from-to)	652-653
Number of pages	2
Journal	Przemysl Chemiczny
Volume	82
Issue number	8-9
Publication status	Published - 2003

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering

Cite this

@article{28075396b0c643c6bac6afb93ebe0744,

title = "Kinetyka utleniania izomerycznych metoksy-(1-metyloetylo)benzen{\'o}w",

abstract = "The kinetics of noncatalyzed liquid-phase oxidation of 1-methoxy-2- (-3-, and -4)-(1-isopropyl)benzenes (1,2-, 1,3-, 1,4-MiPB) with oxygen was studied by measuring the uptake of O2 over 50-120°C. At 50°C (120°C), the oxidizabilities of 1,2-, 1,3- and 1,4-MiPB evaluated as (k p/kt1/2) from the kinetic model (a free-radical and chain mechanism), rox = ri1/2 (kp/kt1/2)CRH (rox, ri - rates of oxidation and initiation, kp, kt - propagation and termination rate constants, CRH - concentration of MiPB), were 0 (0.2), 1 (5.9) and 3.7 (16.3) mL/(mol·s)1/2, resp. Over 50-74°C and 74-120°C, 1,4-MiPB was resp. more and less oxidizable than cumene. For 1,3- and 1,4-MiPB, the total activation energies were 26±2 and 22±2 kJ/mol, resp., compared with the 28±1 for cumene.",

author = "Jan Zawadiak and J{\"o}rg Talbiersky and Bart{\l}omiej Jakubowski",

year = "2003",

language = "polski",

volume = "82",

pages = "652--653",

journal = "Przemysl Chemiczny",

issn = "0033-2496",

publisher = "Wydawnictwo SIGMA - N O T Sp. z o.o.",

number = "8-9",

}

TY - JOUR

T1 - Kinetyka utleniania izomerycznych metoksy-(1-metyloetylo)benzenów

AU - Zawadiak, Jan

AU - Talbiersky, Jörg

AU - Jakubowski, Bartłomiej

PY - 2003

Y1 - 2003

N2 - The kinetics of noncatalyzed liquid-phase oxidation of 1-methoxy-2- (-3-, and -4)-(1-isopropyl)benzenes (1,2-, 1,3-, 1,4-MiPB) with oxygen was studied by measuring the uptake of O2 over 50-120°C. At 50°C (120°C), the oxidizabilities of 1,2-, 1,3- and 1,4-MiPB evaluated as (k p/kt1/2) from the kinetic model (a free-radical and chain mechanism), rox = ri1/2 (kp/kt1/2)CRH (rox, ri - rates of oxidation and initiation, kp, kt - propagation and termination rate constants, CRH - concentration of MiPB), were 0 (0.2), 1 (5.9) and 3.7 (16.3) mL/(mol·s)1/2, resp. Over 50-74°C and 74-120°C, 1,4-MiPB was resp. more and less oxidizable than cumene. For 1,3- and 1,4-MiPB, the total activation energies were 26±2 and 22±2 kJ/mol, resp., compared with the 28±1 for cumene.

AB - The kinetics of noncatalyzed liquid-phase oxidation of 1-methoxy-2- (-3-, and -4)-(1-isopropyl)benzenes (1,2-, 1,3-, 1,4-MiPB) with oxygen was studied by measuring the uptake of O2 over 50-120°C. At 50°C (120°C), the oxidizabilities of 1,2-, 1,3- and 1,4-MiPB evaluated as (k p/kt1/2) from the kinetic model (a free-radical and chain mechanism), rox = ri1/2 (kp/kt1/2)CRH (rox, ri - rates of oxidation and initiation, kp, kt - propagation and termination rate constants, CRH - concentration of MiPB), were 0 (0.2), 1 (5.9) and 3.7 (16.3) mL/(mol·s)1/2, resp. Over 50-74°C and 74-120°C, 1,4-MiPB was resp. more and less oxidizable than cumene. For 1,3- and 1,4-MiPB, the total activation energies were 26±2 and 22±2 kJ/mol, resp., compared with the 28±1 for cumene.

UR - https://www.scopus.com/pages/publications/0141729304

M3 - Artykuł

AN - SCOPUS:0141729304

SN - 0033-2496

VL - 82

SP - 652

EP - 653

JO - Przemysl Chemiczny

JF - Przemysl Chemiczny

IS - 8-9

ER -

Kinetyka utleniania izomerycznych metoksy-(1-metyloetylo)benzenów

Abstract

ASJC Scopus subject areas

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