MXPA05012849A - Metodo y aparato para purificar aire usando un fotocatalizador. - Google Patents

Metodo y aparato para purificar aire usando un fotocatalizador.

Info

Publication number
MXPA05012849A
MXPA05012849A MXPA05012849A MXPA05012849A MXPA05012849A MX PA05012849 A MXPA05012849 A MX PA05012849A MX PA05012849 A MXPA05012849 A MX PA05012849A MX PA05012849 A MXPA05012849 A MX PA05012849A MX PA05012849 A MXPA05012849 A MX PA05012849A
Authority
MX
Mexico
Prior art keywords
tungsten oxide
titanium dioxide
contaminant
coating
valence band
Prior art date
Application number
MXPA05012849A
Other languages
English (en)
Inventor
Joseph J Sangiovanni
Original Assignee
Carrier Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Carrier Corp filed Critical Carrier Corp
Publication of MXPA05012849A publication Critical patent/MXPA05012849A/es

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
    • B01J21/063—Titanium; Oxides or hydroxides thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/8668—Removing organic compounds not provided for in B01D53/8603 - B01D53/8665
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/88—Handling or mounting catalysts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/88—Handling or mounting catalysts
    • B01D53/885—Devices in general for catalytic purification of waste gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/24—Chromium, molybdenum or tungsten
    • B01J23/30—Tungsten
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/54—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/56—Platinum group metals
    • B01J23/64—Platinum group metals with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/652—Chromium, molybdenum or tungsten
    • B01J23/6527—Tungsten
    • B01J35/39—
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/02—Impregnation, coating or precipitation
    • B01J37/0215—Coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/02—Impregnation, coating or precipitation
    • B01J37/024—Multiple impregnation or coating
    • B01J37/0244—Coatings comprising several layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/80—Type of catalytic reaction
    • B01D2255/802—Photocatalytic
    • B01J35/56—

Abstract

Un recubrimiento de fotocatalizador de oxido de tungsteno/dioxido de titanio oxida los contaminantes en el aire que se adsorben sobre el recubrimiento en agua, dioxido de carbono y otras sustancias. El oxido de tungsteno se forma en una monocapa sobre el dioxido de titanio. Cuando los protones de la luz ultravioleta son adsorbidos por el recubrimiento de fotocatalizador de oxido de tungsteno/dioxido de titanio, un electron es promovido de la banda de valencia a la banda de conduccion, produciendo una cavidad en la banda de valencia. Las cavidades en la banda de valencia reaccionan con el agua aplicada sobre el recubrimiento de fotocatalizador de oxido de tungsteno/dioxido de titanio, formando radicales hidroxilo reactivos. Cuando un contaminante en el aire es adsorbido sobre el fotocatalizador de oxido de tungsteno/dioxido de titanio, el radical hidroxilo ataca al contaminante, extrayendo un atomo de hidrogeno del contaminante. El radical hidroxilo oxida el contaminante, produciendo agua, dioxido de carbono y otras sustancias. El recubrimiento fotocatalitico de oxido de tungsteno/dioxido de titanio tiene baja sensibilidad a las variaciones de humedad.
MXPA05012849A 2003-05-30 2004-05-27 Metodo y aparato para purificar aire usando un fotocatalizador. MXPA05012849A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/449,752 US7255831B2 (en) 2003-05-30 2003-05-30 Tungsten oxide/titanium dioxide photocatalyst for improving indoor air quality
PCT/US2004/016710 WO2004108255A1 (en) 2003-05-30 2004-05-27 Method and apparatus for purifying air using a photocatalyst

Publications (1)

Publication Number Publication Date
MXPA05012849A true MXPA05012849A (es) 2006-02-22

Family

ID=33451857

Family Applications (1)

Application Number Title Priority Date Filing Date
MXPA05012849A MXPA05012849A (es) 2003-05-30 2004-05-27 Metodo y aparato para purificar aire usando un fotocatalizador.

Country Status (10)

Country Link
US (1) US7255831B2 (es)
EP (1) EP1628745B1 (es)
JP (1) JP2007500077A (es)
KR (1) KR100808340B1 (es)
CN (1) CN100496677C (es)
AT (1) ATE529177T1 (es)
CA (1) CA2526498A1 (es)
ES (1) ES2370823T3 (es)
MX (1) MXPA05012849A (es)
WO (1) WO2004108255A1 (es)

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Also Published As

Publication number Publication date
ATE529177T1 (de) 2011-11-15
US20040241040A1 (en) 2004-12-02
KR100808340B1 (ko) 2008-02-27
EP1628745B1 (en) 2011-10-19
JP2007500077A (ja) 2007-01-11
CN1832793A (zh) 2006-09-13
CA2526498A1 (en) 2004-12-16
US7255831B2 (en) 2007-08-14
EP1628745A1 (en) 2006-03-01
CN100496677C (zh) 2009-06-10
ES2370823T3 (es) 2011-12-23
KR20060012020A (ko) 2006-02-06
WO2004108255A1 (en) 2004-12-16

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