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Title:
COMPOSITIONS FOR REDUCING ATMOSPHERIC OXIDISING POLLUTANTS
Document Type and Number:
WIPO Patent Application WO2002092194
Kind Code:
A3
Abstract:
A composition for reducing atmospheric oxidising pollutants comprising a reducing agent comprising: at least one transition element and/or one or more compounds including at least one transition element wherein the standard electrode potential of the redox reaction including the transition element and an ionic species of the transition element or between the ionic species of the transition element present in the or each compound and a further ionic species of the transition element is less than +1.0 volt; a precious metal-free trap material capable of trapping at least one atmospheric reducing pollutant, whereby the at least one atmospheric oxidising pollutant is reduced by a combination of the trap material and at least one trapped atmospheric reducing pollutant, which at least one trapped atmospheric reducing pollutant is consequently oxidised; or a manganese-based catalyst, preferably MnO2 or a derivative thereof including cryptomelane, and a water soluble binder.

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Inventors:
MORGAN CHRISTOPHER (GB)
Application Number:
PCT/GB2002/002141
Publication Date:
March 13, 2003
Filing Date:
May 15, 2002
Export Citation:
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Assignee:
JOHNSON MATTHEY PLC (GB)
MORGAN CHRISTOPHER (GB)
International Classes:
B01D53/74; B01D53/86; B01D53/88; B01D53/94; F01P3/18; B01J23/34; B01J23/80; B01J23/83; B01J35/00; B01J37/02; F28F19/02; (IPC1-7): B01D53/86; B01D53/88; B01D53/94; B01D53/74
Domestic Patent References:
WO1996022146A21996-07-25
WO1995033560A11995-12-14
WO1990011433A11990-10-04
Foreign References:
EP0398765A11990-11-22
FR2747320A11997-10-17
EP0779093A11997-06-18
US5945080A1999-08-31
DE1161869B1964-01-30
GB1522389A1978-08-23
EP0210681A11987-02-04
EP0387044A11990-09-12
US5698165A1997-12-16
DE19826209A11999-12-09
US5888924A1999-03-30
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