Catalytic oxidation of 2-mercaptoethanol by cobalt(II)-phthalocyanine complexes intercalated in layered double hydroxides

Iliev, V.; Ileva, A.; Dimitrov, Lyubomir

doi:10.1016/0926-860x(95)00027-5

Cited by 74 publications

(34 citation statements)

References 19 publications

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“…Considering these observations, we believe, a co-operative phenomenon, wherein the proximity of two active species along with a right kind of participation of host matrix, may be essential for the reaction to occur on such metallomacrocycles immobilized materials. Similar observations were recently corroborated by Iliev et al [68] for oxidation and photooxidation of sulfur containing compounds over phthalocyanine and salen complexes immobilized in LDHs and zeolites as host materials wherein the activity of immobilized samples were lower than that of neat complexes and attributed to retardation of oxygen and reactants towards the active sites. However, very recently there was a promising report by Constantino and coworkers [69] on the selective oxidation of catechol by FePcTs intercalated HTs, who concluded that heterogeneous counterparts were better in both activity and longevity than the homogeneous forms.…”

Section: Catalytic Applications Of Macrocyclic Anion Intercalated Hydsupporting

confidence: 78%

Catalytic applications of hydrotalcite-like materials and their derived forms

Srinivasan

2006

Catal Surv Asia

108

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Hydrotalcite-like (HT-like) materials have been studied extensively in the last three decades. Although these materials initially perceived as potential anion exchangers, unrelenting efforts have also been attempted to use them as catalytic materials or as catalytic supports. There are varied ways by which one can use them for catalysis viz.; 1. Use them in as-synthesized form 2. Use them after calcining where the structural integrity of layered lattice is lost 3. Use the interlayer as functional spaces with moieties of catalytic interest 4. Use them after destruction or delamination and restructuring and 5. Use them as support or matrix. In this review, we are reporting the catalytic applications of HT-like materials and their derived forms carried out in our research group for the last 15 years in these various ways, covering reactions such as nitrous oxide decomposition, selective oxidation of organic compounds of industrial relevance and base-catalyzed isomerization of chemicals of perfumery interest. Although this review primarily focuses on our work, wherever applicable, related or relevant works from other groups are also presented to bestow comprehensiveness.

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Section: Catalytic Applications Of Macrocyclic Anion Intercalated Hydsupporting

confidence: 78%

Catalytic applications of hydrotalcite-like materials and their derived forms

Srinivasan

2006

Catal Surv Asia

108

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“…Fortuitously, the new polymer displays a marked improvement in photostability, allowing for numerous repetitions of the photooxidation without degradation of the sensitizer. Immobilized zinc phthalocyanine and SALEN (1,6-bis(2-hydroxyphenyl)-2,5-diaza-1,5-hexadiene), complexes have been studied as photocatalysts for the oxidation of 2-mercaptoethanol and sodium thiosulfate [55]. The complexes were anchored on silica or intercalated in the galleries and cavities of layered double hydroxides and zeolite.…”

Section: Immobilized Photosensitizersmentioning

confidence: 99%

Photosensitized singlet oxygen and its applications

DeRosa

2002

Coordination Chemistry Reviews

2,564

2,134

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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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Catalytic oxidation of 2-mercaptoethanol by cobalt(II)-phthalocyanine complexes intercalated in layered double hydroxides

Cited by 74 publications

References 19 publications

Catalytic applications of hydrotalcite-like materials and their derived forms

Catalytic applications of hydrotalcite-like materials and their derived forms

Photosensitized singlet oxygen and its applications

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

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