Cationic latices as cocatalyst in the cobaltphthalocyanine-catalyzed oxidation of 2-mercaptoethanol

Streun, K.H. van; Belt, Wil; Schipper, Eugène T.W.M.; Piet, Pieter; German, Anton L.

doi:10.1016/0304-5102(92)80021-8

Cited by 21 publications

(9 citation statements)

References 30 publications

(4 reference statements)

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“…It appeared that cationic polymers exert large effects on the tetrasodium cobalt(II) phthalocyaninetetrasulfonate (CoPclNaSOsk) (Figure 1) catalyzed thiol autoxidation. [3][4][5][6] In the case of the addition of 2,4-ionene (Figure 2), a poly(quaternary ammonium) salt, the highest rate enhancement is observed, i.e., by a factor of 40, as * To whom correspondence should be addressed. ® Abstract published in Advance ACS Abstracts, February 1, 1995.…”

Section: Introduction Scheme Iamentioning

confidence: 99%

Synthesis and Cocatalytic Properties of Polystyrene-Ionene-Stabilized Lattices

Schipper¹,

Pinckaers²,

Piet³

et al. 1995

Macromolecules

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Section: Introduction Scheme Iamentioning

confidence: 99%

Synthesis and Cocatalytic Properties of Polystyrene-Ionene-Stabilized Lattices

Schipper¹,

Pinckaers²,

Piet³

et al. 1995

Macromolecules

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“…However, the catalytic activity often decreases on immobilization as a result of mass transport limitations. Recently, much attention has been paid to the immobilization of catalysts without the loss of reactivity . Polymer colloids (latexes) offer interesting possibilities of combining these two requirements.…”

Section: Cationic Latexesmentioning

confidence: 99%

Cationic Polymer Nanoparticles and Nanogels: From Synthesis to Biotechnological Applications

2013

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“…E-mail: mthassanein@yahoo.com Examples are oxidation of alkenes [13,14], aromatic compounds [15], ascorbic acid [16], thiols [17][18][19][20][21][22][23][24] and phenols [25][26][27][28][29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Oxidation of 2,6-Di-tert-butylphenol by dioxygen catalyzed by tetrasodium phthalocyaninatocobalt(II) tetrasulfonate in aqueous micellar media

Hassanein

Sakaran

Shendy

2010

JICS

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The oxidation of 2,6-di-tert-butylphenol by dioxygen has been investigated in aqueous micellar aggregates of cetyltrimethylammonium bromide (CTAB) using tetrasodium phthalocyaninatocobalt(II) tetrasulfonate (CoPcTsNa 4 ) as catalyst. The CTAB/CoPcTsNa 4 system showed enhanced catalytic activity in the oxidation of 2,6-di-tert-butylphenol compared to that observed in the oxidation reaction in the absence of CTAB. 2,6-Di-tert-butyl-1,4-benzoquinone and 3,5,3',5'-tetra-tert-butyl-4,4-diphenoquinone were identified as reaction products. The initial rate constants of auto-oxidation reaction was found to increase with increasing the pH range from 7.0 to 13.0. The rate constants k obs of auto-oxidation reaction showed linear dependence on catalyst concentration. The rate of auto-oxidation reaction was found to fit a Michealis-Menten kinetic model for the saturation of catalyst sites with increasing 2,6-di-tert-butylphenol concentration and dioxygen pressure. Tetrasodium phthalocyaninatocobalt(II) tetrasulfonate in aqueous micellar solution of CTAB was found to be mainly monomeric.

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Cationic latices as cocatalyst in the cobaltphthalocyanine-catalyzed oxidation of 2-mercaptoethanol

Cited by 21 publications

References 30 publications

Synthesis and Cocatalytic Properties of Polystyrene-Ionene-Stabilized Lattices

Synthesis and Cocatalytic Properties of Polystyrene-Ionene-Stabilized Lattices

Cationic Polymer Nanoparticles and Nanogels: From Synthesis to Biotechnological Applications

Oxidation of 2,6-Di-tert-butylphenol by dioxygen catalyzed by tetrasodium phthalocyaninatocobalt(II) tetrasulfonate in aqueous micellar media

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