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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 46, Number 3
JKCSEZ 46(3)
June 20, 2002 
 
Title
 Oxidation Reaction of 2,6-di-tert-butylphenol by Oxygen Adducted Cobalt(III) Complexes

산소 첨가된 Cobalt(III)착물에 의한 2,6-di-tert-butylphenol 의 산화반응
Author
 Jeong-Geun Oh, Chae-Pyeong Rim , Yong-Kook Choi

오정권, 임채평, 최영국
Keywords
Abstract
 메탄올 용액에서 산소 첨가된 Co(Ⅲ) 착물을 촉매로 사용하여 흡광광도법에의한 2,6-di-tert-butylphenol(DTBP)의 산화반응에 대하여 알아보았다. 산화반응의 결과로서 주 생성물은 2,6-di-tert-butylbenzoqu-inone(BQ)였고 산소 첨가된 착물의 촉매 활성은 [Co(Ⅲ)2(SMPD)2(Py)2]2O2가 [Co(Ⅲ)2(SPPD)2(Py)2]2O2보다 더 컸으며 속도상수(K)는 4.55∼2.12×10-3/s의 값으로 주어졌다. 또한 산화반응은 촉매, 산소분자 및 기질의 노도에 1차 반응임을 확인하였으며 활성화 에너지(Ea)가 10.38kJ/mol로 주어져 Arrhenius의 특성에서 벗어는 결과를 보였다.

The oxidation reaction between 2,6-di-tert-butylphenol (DTBP) and oxygen adducted Co(Ⅲ) complexes as a catalysis has been studied by UV-visible spectrophtometry. According to the results, main product is 2,6-di-tert-butylbenzoquinone(BQ) and the activity of the complexes is bigger in [Co(Ⅲ)2(SMPD)2(Py)2]2O2 than in [Co(Ⅲ)2(SPPD)2(Py)2]2O2. The rate constant is 4.55~2.12×10-3/s. It was found that the oxidation reaction is primary reac-tion or concentration of catalysis, O2 molecule and substance. The reasult is far from Arrhenius properties because acti-vationenergy is 10.38 kJ/mol.
Page
 219 - 224
Full Text
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