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Title:Heterogeneous Catalytic Reduction of Perchlorate in Water
Author(s):Hurley, Keith D.
Doctoral Committee Chair(s):Shapley, John R.
Department / Program:Chemistry
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Chemistry, Inorganic
Abstract:To probe the ligand effect, a series of catalyst were prepared by supporting trans-[Re(O)2L4]+ X, (L = pyridine, 4-methylpyridine, 4-methoxypyridine, or 4dimethylaminopyridine, X = Cl - or [ReO4]-) or trans-[ReO 2(L-L)2]I (L-L = ethylenediamine) on nominally 5 wt.% Pd on activated carbon by incipient wetness. All of the supported Re(V) complexes examined by XPS yielded binding energies showing only a +7 oxidation state, while examination of an unsupported complex clearly showed both Re(V) and Re(VII) as being present. Unlike previous materials, these complexes had never been demonstrated as oxygen atom transfer catalysts. All materials completely reduced perchlorate to chloride in the presence of 2mM excess Cl- while exhibiting pseudo-first order kinetics. Supported catalyst activity increased with the e--donating ability of the para-substituent on the pyridine ligands.
Issue Date:2008
Description:166 p.
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2008.
Other Identifier(s):(MiAaPQ)AAI3347395
Date Available in IDEALS:2015-09-25
Date Deposited:2008

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