WO1997028884B1 - Compounds for the sorption of gases - Google Patents

Compounds for the sorption of gases

Info

Publication number
WO1997028884B1
WO1997028884B1 PCT/EP1997/000598 EP9700598W WO9728884B1 WO 1997028884 B1 WO1997028884 B1 WO 1997028884B1 EP 9700598 W EP9700598 W EP 9700598W WO 9728884 B1 WO9728884 B1 WO 9728884B1
Authority
WO
WIPO (PCT)
Prior art keywords
compound
alkaline
formula
compound according
lanthanide
Prior art date
Application number
PCT/EP1997/000598
Other languages
French (fr)
Other versions
WO1997028884A3 (en
WO1997028884A2 (en
Filing date
Publication date
Priority claimed from IT96BO000063A external-priority patent/IT1285562B1/en
Priority to BR9707277A priority Critical patent/BR9707277A/en
Priority to AU17683/97A priority patent/AU710506B2/en
Priority to AT97903251T priority patent/ATE211942T1/en
Priority to PL97328329A priority patent/PL328329A1/en
Priority to EP97903251A priority patent/EP0880394B1/en
Priority to KR1019980706202A priority patent/KR19990082469A/en
Priority to CA 2245904 priority patent/CA2245904A1/en
Application filed filed Critical
Priority to DK97903251T priority patent/DK0880394T3/en
Priority to DE69709623T priority patent/DE69709623T2/en
Priority to US09/117,392 priority patent/US6379638B1/en
Priority to JP9528171A priority patent/JP2000505720A/en
Publication of WO1997028884A2 publication Critical patent/WO1997028884A2/en
Publication of WO1997028884A3 publication Critical patent/WO1997028884A3/en
Publication of WO1997028884B1 publication Critical patent/WO1997028884B1/en

Links

Abstract

Compounds having the formula: A2B3O6±d wherein A is an alkaline-earth metal, an alkaline metal, a lanthanide, or a solid solution thereof, B is a transition metal, an element of group III, or a solid solution thereof, and d has a value between 0 and 1; a method for preparing the compounds; a method for producing composite materials on various matrices and thin or thick films deposited on various substrates which contain the compounds; their use; and a method for eliminating certain gases from a mixture that includes them by using the compounds.

Claims

AMENDED CLAIMS[received by the International Bureau on 19 January 1998 (19.01.98); original claims 1-35 replaced by new claims (5 pages)]
1. Use of a compound having the formula
A2B3°6±d
wherein A is an alkaline-earth metal, an alkaline metal, a lanthanide, or a solid solution thereof, B is a transition metal, an element of group III, or a solid solution thereof, and d has a value between 0 and 1, for fixing gases .
2. Use of a compound according to claim 1, characterized in that A is chosen from the group constituted by barium, cesium, potassium, strontium, a lanthanide, or solid solutions thereof.
3. Use of a compound according to claim 1, characterized in that B is chosen from the group constituted by copper, nickel, manganese, iron, palladium, titanium, aluminum, gallium, zinc, cobalt, or solid solutions thereof.
4. Use of a compound according to claim 1, characterized in that said compound has the formula Ba2Cu306±d.
5. Use of a compound according to claim 1, characterized in that said compound has the formula
(Ba2_χAχ)Cu306±d wherein A is an alkaline metal, an alkaline-earth metal, or a lanthanide .
6. Use of a compound according to claim 1, characterized in that said compound has the formula
(Ba2_χSrχ)Cu306±d, 0 < x < 0.75
7. Use of a compound according to claim 1, characterized in that said compound has the formula Ba2(Cu3 B )06±d, 0 < y < 1, wherein B is a transition metal or an element of group III.
8. Use of a compound according to claim 1, characterized in that said compound has the formula
Ba2(Cu3_yNiy)06±dm 0 < y < 1
9. Use of a compound according to claim 1, characterized in that said compound has the formula
Ba2(Cu3_yPdy)06±d, 0 < y < 0.33
10. Use of a compound according to claim 1, characterized in that said gas is an oxide or a gaseous halogen.
11. Use of a compound according to claim 10, characterized in that said gas is chosen from the group constituted by NO, N02 , C02 , CO, S02, F2, and Cl2.
12. A method for eliminating one or more oxides or gaseous halogens from a mixture of gases that contains them, comprising the stage of placing said gas mixture in contact with a compound as defined in any one of claims 1 to 9 at a temperature between -196°C and 650°C.
13. A method according to claim 12, characterized in that said gas to be eliminated is chosen from the group constituted by NO, N02, C02 , CO, S02, F2, and Cl2-
14. A method according to claim 13, characterized in that the gas to be eliminated is N02 and said temperature is preferably between -20°C and 300°C.
15. A method according to claim 13, characterized in that the gas to be eliminated is NO and said temperature is between -20°C and 500°C.
AMENDEDSHEET(ARTICLED)
16. A method according to claim 12, characterized in that it comprises a subsequent step for the regeneration of said compound by heating to a temperature between 550 and 750°C.
17. A method according to claim 16, characterized in that said regeneration step occurs in an oxidizing atmosphere.
18. A compound having the formula
A2B3°6±d wherein A is an alkaline-earth metal, an alkaline metal, a lanthanide, or a solid solution thereof, B is a transition metal, an element of group III, or a solid solution thereof, and d has a value between 0 and 1, and its oxyanionic derivatives, provided that said compound is different from Ba2Cu306±d.
19. A compound according to claim 18, characterized in that A is chosen from the group constituted by barium, cesium, potassium, strontium, a lanthanide, or solid solutions thereof.
20. A compound according to claim 18, characterized in that B is chosen from the group constituted by copper, nickel, manganese, iron, palladium, titanium, aluminum, gallium, zinc, cobalt, or solid solutions thereof.
21. A compound according to claim 18, characterized in that said compound has the formula
(Ba2-χAχ)Cu3°6±d' 0 < x < 1, wherein A is an alkaline metal or an alkaline-earth metal or a lanthanide.
22. A compound according to claim 18, characterized in that said compound has the formula Ba2(Cu3_yBy)06±d, 0 < y < 1, wherein B is a transition metal or an element of group III.
23. A compound according to claim 18, characterized in that said compound has the formula
(Ba2_χSrχ)Cu306±d, 0 < x < 0.75.
24. A compound according to claim 18, characterized in that said compound has the formula
Ba2(Cu3_yNiy)06±d, 0 < y < 1.
25. A compound according to claim 18, characterized in that said compound has the formula
Ba2(Cu3_yPdy)Oδ±d, 0 < y < 0.33.
26. A method for preparing a compound as defined in any one of claims 1 to 9, comprising the heat treatment of a mixture of one or more compounds chosen from the group constituted by oxides, peroxides, and nitrates of alkaline or alkaline-earth metals or lanthanides, and one or more compounds chosen from the group constituted by oxides, peroxides, and nitrates of transition metals or of elements of group III, said heat treatment being performed in a controlled atmosphere which contains only oxygen, nitrogen, and inert gases.
27. A method according to claim 26, characterized in that said mixture comprises an oxide of an alkaline-earth or alkaline metal or lanthanide and an oxide of a transition metal or of an element of group III.
28. A method according to claim 26, characterized in that said mixture comprises a nitrate of an alkaline-earth or alkaline metal or lanthanide and a nitrate of a transition metal or of an element of group III.
29. A method according to claim 28, comprising the stages of a — impregnating a porous substrate with an aqueous solution .of said mixture of nitrates, b -- heating said support impregnated with said solution in order to eliminate the water, c — maintaining heating until the evolution of N02 produced by the decomposition of the nitrates ends, thus obtaining a composite material wherein said compound fills the microcavities of the porous substrate.
30. A method according to claim 28, comprising the stages of a — wetting a substrate of non-porous inert material with an aqueous solution of said nitrates, b — heating said wetted substrate to evaporate the water, c — repeating stages a and b until a deposition of nitrates having a preset thickness is obtained, d — maintaining heating until the evolution of N02 produced by the decomposition of the nitrates ends, thus obtaining a film constituted by said compound.
31. A composite material comprising a compound as defined in any one of claims 1 to 9.
32. A film constituted by a material comprising a compound as defined in any one of claims 1 to 9.
33. A gas fixing device, comprising a compound as defined in any one of claims 1 to 9.
34. An electrical gas concentration sensor, comprising a compound as defined in any one of claims 1 to 9.
35. An optical gas concentration sensor, comprising a compound as claimed in any one of claims 1 to 9.
PCT/EP1997/000598 1996-02-12 1997-02-10 Compounds for the sorption of gases WO1997028884A2 (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
JP9528171A JP2000505720A (en) 1996-02-12 1997-02-10 Compounds for gas fixation
CA 2245904 CA2245904A1 (en) 1996-02-12 1997-02-10 Compounds for the sorption of gases
AT97903251T ATE211942T1 (en) 1996-02-12 1997-02-10 COMPOUNDS FOR THE SORPTION OF GASES
PL97328329A PL328329A1 (en) 1996-02-12 1997-02-10 Gas sorption compounds
EP97903251A EP0880394B1 (en) 1996-02-12 1997-02-10 Compounds for the sorption of gases
KR1019980706202A KR19990082469A (en) 1996-02-12 1997-02-10 Compounds for the sorption of gases
DK97903251T DK0880394T3 (en) 1996-02-12 1997-02-10 Compounds for sorption of gases
BR9707277A BR9707277A (en) 1996-02-12 1997-02-10 Compound use of the same processes for the preparation of the same and for the elimination of one or more oxides or gaseous halogens from a mixture of gases containing them composite material film device for fixing gases and electrical and optical sensor for gas concentrations
AU17683/97A AU710506B2 (en) 1996-02-12 1997-02-10 Compounds for the sorption of gases
DE69709623T DE69709623T2 (en) 1996-02-12 1997-02-10 CONNECTIONS FOR THE SORPTION OF GASES
US09/117,392 US6379638B1 (en) 1996-02-12 1997-02-10 Method for removing harmful components from a gaseous mixture

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITBO96A000063 1996-02-12
IT96BO000063A IT1285562B1 (en) 1996-02-12 1996-02-12 COMPOUNDS WITH GAS FIXING ACTIVITIES

Publications (3)

Publication Number Publication Date
WO1997028884A2 WO1997028884A2 (en) 1997-08-14
WO1997028884A3 WO1997028884A3 (en) 1998-01-15
WO1997028884B1 true WO1997028884B1 (en) 1998-02-26

Family

ID=11341096

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1997/000598 WO1997028884A2 (en) 1996-02-12 1997-02-10 Compounds for the sorption of gases

Country Status (16)

Country Link
US (1) US6379638B1 (en)
EP (1) EP0880394B1 (en)
JP (1) JP2000505720A (en)
KR (2) KR19990082469A (en)
CN (1) CN1210474A (en)
AT (1) ATE211942T1 (en)
AU (1) AU710506B2 (en)
BR (1) BR9707277A (en)
DE (1) DE69709623T2 (en)
DK (1) DK0880394T3 (en)
ES (1) ES2169846T3 (en)
IT (1) IT1285562B1 (en)
PL (1) PL328329A1 (en)
PT (1) PT880394E (en)
RU (1) RU98117080A (en)
WO (1) WO1997028884A2 (en)

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IT1304405B1 (en) * 1998-10-21 2001-03-19 Consiglio Nazionale Ricerche PROCESS FOR ABSORPTION OF NITROGEN OXIDES FROM GASEOUS MIXTURES CONTAINING THE SAME.
EP1297884A3 (en) * 2001-09-28 2003-04-16 Japan Pionics Co., Ltd. Treating agent and method for decomposition of fluorocarbons
US7156895B2 (en) * 2004-01-07 2007-01-02 David Rubin Air cleaning system
US7371357B2 (en) * 2005-04-27 2008-05-13 Clean World Strategies Corp. Process for removal of pollutants
JP4435066B2 (en) * 2005-09-29 2010-03-17 株式会社東芝 Hydrogen halide gas detector and hydrogen halide gas absorber
US8613806B2 (en) * 2010-08-30 2013-12-24 Corning Incorporated Method for eliminating carbon contamination of platinum-containing components for a glass making apparatus
CN105057009B (en) * 2015-09-09 2018-06-19 南京大学 A kind of regeneration method after copper-cerium solid solution catalyst inactivation
CN108499375B (en) * 2018-01-25 2020-07-21 天津大学 Preparation method of large-flux cobalt ferrocyanide PVDF (polyvinylidene fluoride) flat composite membrane
CN108187509B (en) * 2018-01-25 2020-09-11 天津大学 Cobalt ferrocyanide PVDF hollow fiber membrane, preparation method and application thereof

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