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Titolo:
The catalytic and photocatalytic autoxidation of S-x(2-) to SO42- by water-soluble cobalt porphyrin
Autore:
Chen, SM; Chiu, SW;
Indirizzi:
Natl Taipei Univ Technol, Dept Chem Engn, Taipei 106, Taiwan Natl Taipei Univ Technol Taipei Taiwan 106 Chem Engn, Taipei 106, Taiwan
Titolo Testata:
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
fascicolo: 2, volume: 166, anno: 2001,
pagine: 243 - 253
SICI:
1381-1169(20010215)166:2<243:TCAPAO>2.0.ZU;2-2
Fonte:
ISI
Lingua:
ENG
Soggetto:
ELECTROCATALYTIC REACTION; SULFUR OXOANIONS; AQUEOUS-SOLUTION; PHOTODYNAMIC THERAPY; ROOM-TEMPERATURE; IRON PORPHYRINS; RESONANCE RAMAN; PORE WATERS; PHOTOOXIDATION; PHTHALOCYANINES;
Keywords:
photocatalytic autoxidation; polysulfide ions; electrocatalytic reduction;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
29
Recensione:
Indirizzi per estratti:
Indirizzo: Chen, SM Natl Taipei Univ Technol, Dept Chem Engn, 1,Sect 3,Chung Hsiao E Rd, Taipei 106, Taiwan Natl Taipei Univ Technol 1,Sect 3,Chung Hsiao E Rd Taipei Taiwan 106
Citazione:
S.M. Chen e S.W. Chiu, "The catalytic and photocatalytic autoxidation of S-x(2-) to SO42- by water-soluble cobalt porphyrin", J MOL CAT A, 166(2), 2001, pp. 243-253

Abstract

The catalytic and photocatalytic transformation of S-4(2-), S-3(2-), S-2(2-) and S2- to SO42- by water-soluble cobalt tetrakis (N-methyl-4-pyridyl) porphyrin (Co(4-TMPyP)) was performed by a two-step process. The catalytic autoxidation of S-x(2-) (x = 2, 3 and 4) to S2O32- by Co(4-TMPyP) in the presence of oxygen was followed by the photocatalytic oxidation of S2O32- by Co(4-TMPyP) under illumination in presence of oxygen at a strong basic solution. The direct transformation of S-x(2-) to SO42- was also performed. The catalytic activity of Co(4-TMPyP) was compared to Fe(2-TMPyP) and Mn(4-TMPyP). All three catalysts have activity towards autoxidation of S42- to S2O32-. The trend in photocatalytic oxidation activity of the porphyrin complexes is Co(4-TMPyP) > Fe(2-TMPyP) > Mn(4-TMPyP). The electrocatalytic reactions of S-x(2-) by Co(4-TMPyP) were also observed. (C) 2001 Elsevier Science B. V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/09/20 alle ore 21:32:19