An Improved Catalytic Performance of Fe(III)-promoted NHPI in the Oxidation of Hydrocarbons to Hydroperoxides
Full article
| Общее |
Language:
Английский,
Genre:
Full article,
Status:
Published,
Source type:
Original
|
| Journal |
Catalysis Letters
ISSN: 1011-372X
, E-ISSN: 1572-879X
|
| Output data |
Year: 2020,
Volume: 150,
Number: 4,
Pages: 1020-1027
Pages count
: 8
DOI:
10.1007/s10562-019-02999-x
|
| Tags |
Oxidation; Cyclohexene; Ethylbenzene; N-hydroxyphthalimide; Iron(III) salt; Hydroperoxide |
| Authors |
Kuznetsova N.I.
1
,
Kuznetsova L.I.
1
,
Yakovina O.A.
1
,
Karmadonova I.E.
1
,
Bal’zhinimaev B.S.
1
|
| Affiliations |
| 1 |
Boreskov Institute of Catalysis SB RAS, Novosibirsk, Russia
|
|
Funding (1)
|
1
|
Federal Agency for Scientific Organizations
|
0303-2016-0006 (V.44.1.6)
|
N-hydroxyphthalimide (NHPI) is a promising catalyst in aerobic oxidation of hydrocarbons to corresponding hydroperoxides. We have found that a trace amount of Fe(benz)3 or Fe(acac)3 (in concentration of less than 10-1 mmol/l and with the ratio of Fe(III): NHPI = 1: 500) considerably accelerates the oxidation of cyclohexene and ethylbenzene, while retaining the selectivity to hydroperoxides at a level of 90%. As a consequence, the reaction temperature could be lowered down to 50-60 °C. The promoting effect of the additives was attributed to the ability of Fe(III) complexes to generate phthalimido-N-oxyl radicals (PINO) without participation in any transformations of hydrocarbon intermediates and hydroperoxides, thus ensuring selective formation and stability of the hydroperoxides.