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Catalytic autoxidation of chemical contaminants by hybrid complexes of cobalt(II) phthalocyanine

Hong, Andrew P. and Boyce, Scott D. and Hoffmann, Michael R. (1989) Catalytic autoxidation of chemical contaminants by hybrid complexes of cobalt(II) phthalocyanine. Environmental Science and Technology, 23 (5). pp. 533-540. ISSN 0013-936X. http://resolver.caltech.edu/CaltechAUTHORS:20150814-112037758

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Abstract

Cobalt(II) tetraaminophthalocyanine (Co^(II)TAP) and cobalt(II) tetrasulfophthalocyanine (Co^(II)TSP) were linked to the surfaces of a chemically modified silica gel, a functionalized TiO_2, and an amino-substituted macroporous copolymer. The hybrid catalysts were found to have catalytic activity for the aqueous-phase oxidation of hydrazine, hydrogen sulfide, sulfur dioxide, and thiols by molecular oxygen. In general, the hybrid catalysts exhibited longer catalytic lifetimes than their homogeneous analogues. In most cases, attachment of the catalytic complexes to the solid supports resulted in reduced catalytic activity; however, in selected cases, the hybrid catalysts were more active than their homogeneous analogues. The effective diffusivity for SO_3^(2-) within macroporous polystyrene/divinylbenzene beads was found experimentally to be 2.6 X 10^(-6) cm^2 s^(1-). The observed catalytic activity has been interpreted within the framework of a kinetic model with mass-transport limitations.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1021/es00063a004DOIArticle
http://pubs.acs.org/doi/abs/10.1021/es00063a004PublisherArticle
ORCID:
AuthorORCID
Hoffmann, Michael R.0000-0002-0432-6564
Additional Information:© 1989 American Chemical Society. Received for review July 9, 1987. Revised manuscript received May 25,1988. Accepted November 9,1988. We gratefully acknowledge the financial support of the U.S. Environmental Protection Agency (R811612-01-0). We thank Donald Carey for his encouragement and support.
Funders:
Funding AgencyGrant Number
Environmental Protection Agency (EPA)R811612-01-0
Record Number:CaltechAUTHORS:20150814-112037758
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20150814-112037758
Official Citation:Catalytic autoxidation of chemical contaminants by hybrid complexes of cobalt(II) phthalocyanine Andrew P. Hong, Scott D. Boyce, and Michael R. Hoffmann Environmental Science & Technology 1989 23 (5), 533-540 DOI: 10.1021/es00063a004
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:59535
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:14 Aug 2015 18:58
Last Modified:14 Aug 2015 18:58

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