WO2023122693A1 - Matériaux catalytiques résistant à la désactivation et leur procédé de fabrication - Google Patents

Matériaux catalytiques résistant à la désactivation et leur procédé de fabrication Download PDF

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Publication number
WO2023122693A1
WO2023122693A1 PCT/US2022/082181 US2022082181W WO2023122693A1 WO 2023122693 A1 WO2023122693 A1 WO 2023122693A1 US 2022082181 W US2022082181 W US 2022082181W WO 2023122693 A1 WO2023122693 A1 WO 2023122693A1
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catalytic
catalytic material
noble metal
deactivation resistant
deactivation
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PCT/US2022/082181
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English (en)
Inventor
Ekambaram Sambandan
Mia SHAHZAHAN
Bin Zhang
Shinya Kotake
Yoshie Satomi
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Nitto Denko Corporation
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Publication of WO2023122693A1 publication Critical patent/WO2023122693A1/fr

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    • 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
    • B01J21/063—Titanium; 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
    • 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
    • B01J21/066—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
    • B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/18—Carbon
    • 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
    • B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
    • B01J23/42—Platinum
    • 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
    • B01J23/58—Platinum group metals with alkali- or alkaline earth metals
    • 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
    • B01J23/60—Platinum group metals with zinc, cadmium or mercury
    • 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
    • B01J23/63—Platinum group metals with rare earths or actinides
    • 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
    • B01J23/648—Vanadium, niobium or tantalum or polonium
    • B01J23/6484—Niobium
    • 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
    • B01J23/648—Vanadium, niobium or tantalum or polonium
    • B01J23/6486—Tantalum
    • 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
    • B01J37/0201—Impregnation
    • 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
    • B01J37/0248—Coatings comprising impregnated particles
    • 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
    • B01J37/04—Mixing
    • 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
    • B01J37/16—Reducing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/10—Noble metals or compounds thereof
    • B01D2255/102—Platinum group metals
    • B01D2255/1021—Platinum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/202—Alkali metals
    • B01D2255/2022—Potassium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/206—Rare earth metals
    • B01D2255/2065—Cerium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/20707—Titanium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/20715—Zirconium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/20792—Zinc
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/30—Silica
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/70—Non-metallic catalysts, additives or dopants
    • B01D2255/702—Carbon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
    • B01D2257/708—Volatile organic compounds V.O.C.'s
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
    • B01D2259/804—UV light
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Definitions

  • VOCs Volatile organic compounds
  • Photocatalysts are environmental toxins that may accumulate and pollute food service, transportation, healthcare, and hospitality sectors. Photocatalysts are often utilized to provide decontamination and protection through the application of photocatalytic combustion which results in the removal of these environmental toxins from the air.
  • VOCs are predominantly anthropogenic, organic compounds such as alcohols, aldehydes (e.g., formaldehyde), acetates, aromatics, esters, ketones, alkanes, alkenes, and other compounds comprising carbon, oxygen, hydrogen, and halogens.
  • the n-type semiconducting oxide is an MO2 binary metal oxide, wherein MO2 may comprise oxides of Ti, Sn, Zr, Ce, Hf, Mn, Ge, Si, or combinations thereof.
  • the n-type semiconducting oxide may comprise TiO2. In one embodiment, the n-type semiconducting oxide may consist of anatase phase TiC>2. In other embodiments, the n-type semiconducting oxide may comprise anatase TiC>2 phase and rutile phase TiC>2, wherein the ratio of the anatase phase to the rutile phase is at least 4:1 .
  • the first noble metal comprises Pt, Ag, Pd, Ru, Ir, or a combination thereof
  • the second noble metal comprises Pt, Ag, Pd, Ru, Au, Ir, or combinations thereof.
  • the first noble metal and the second noble metal are the same.
  • the first noble metal and the second noble metal are platinum.
  • the conducting material comprises activated carbon, cuprous compounds, manganous compounds, stannous compounds, ferrous compounds, chromites, cobaltous compounds, or a combination thereof.
  • the conducting material is an oxide, wherein the reducible oxide comprises cuprous oxide, manganous oxide, stannous oxide, ferrous oxide, chromous oxide, chromite (ferrous oxide and chromous oxide), cobaltous oxide, or a combination thereof.
  • FIG. 1 is a schematic illustrating a proposed mechanism for an embodiment of a catalytic material described herein.
  • FIG. 2 is a graph depicting the zeta potential analysis of an embodiment of a catalytic material.
  • FIG. 3 is a graph depicting the zeta potential analysis of another embodiment of a catalytic material.
  • FIG. 4 is a schematic illustrating the preparation of a catalytic material.
  • deactivation means the loss of catalytic activity, and/or the ability to degrade an environmental pollutant, over time.
  • carboxyl as used herein means a carbon atom of a carbonyl group having an even number of electrons, in which a significant positive charge resides on the carbon atom.
  • carbonyl group as used herein means a functional group composed of a carbon atom double-bonded to an oxygen atom.
  • the current disclosure includes a deactivation resistant catalytic material, comprising: a first catalytic element comprising a first noble metal loaded on a conducting material; and a second catalytic element comprising a second noble metal loaded on an n-type semiconducting oxide.
  • the present disclosure also includes the use of the deactivation resistant catalytic material in the removal of VOCs, such as formaldehyde.
  • the deactivation resistant catalytic material may remove VOCs in a low temperature environment.
  • the deactivation resistant catalytic material may remove VOCs without light or UV radiation.
  • the deactivation resistant catalytic material may remove VOCs in a low temperature environment without light or UV radiation.
  • the present disclosure includes a deactivation resistant catalytic material that permits the rapid exchange of electrons and improves the formation of reactive radical species, thereby facilitating the decomposition of VOCs.
  • the second catalytic element comprises a second noble metal supported on an n-type semiconducting oxide.
  • a VOC e.g., formaldehyde
  • the n- type semiconducting oxide may comprise TiC>2.
  • hydroxyl groups may be present on the surface of TiC>2, which after treatment with basic solutions may be present as “-O’ .
  • the presence of negatively charged hydroxyl groups in proximity to formaldehyde may induce electron movement and transfer from formaldehyde to the second catalytic element.
  • One example of the negative surface of the second catalytic element is illustrated by the negative zeta potential at neutral pH (see FIG. 2).
  • the first noble metal may include platinum.
  • the platinum of the first catalytic element generates a reactive radical species, such as a super oxide radical, by donating an electron to molecular oxygen (O2).
  • the super oxide radicals facilitate the decomposition and oxidation of formaldehyde by attacking the carbon atom of the carbonyl group of formaldehyde.
  • Water vapor (H2O) and carbon dioxide (CO2) are the harmless byproducts of the degradation and oxidation of formaldehyde and other VOCs.
  • the first noble metal is independently selected from Pt, Ag, Pd, Ru, Ir, their oxides and/or hydroxides or combinations thereof
  • the second noble metal is independently selected from Pt, Ag, Pd, Ru, Au, Ir, their oxides and/or hydroxides, or combinations thereof.
  • the first noble metal and second noble metal may be a transition metal, or a transition metal oxide and/or a transition metal hydroxide.
  • the first noble metal and second noble metal may be platinum (Pt) or its oxides and/or hydroxides.
  • the first noble metal and second noble metal may be chosen from different groups of elements including a transition metal and a noble metal or their respective oxides and hydroxides.
  • the first noble metal and the second noble metal are the same.
  • the catalytic material may comprise a second catalytic element comprising a second noble metal supported on an n-type semiconducting oxide.
  • the n-type semiconducting oxide is an MO2 binary metal oxide, wherein M comprises Ti, Sn, Zr, Ce, Hf, Mn, Ge, or Si.
  • the n-type semiconducting oxide is a mixture of MO2 binary metal oxides comprising a combination of Ti, Sn, Zr, Ce, Hf, Mn, Ge, and/or Si oxides.
  • the n-type semiconducting oxide may be TiC>2, and may comprise an anatase X-ray diffraction (XRD) phase.
  • Many embodiments include a method for making a deactivation resistant catalytic material, the method comprising: providing a honeycombed ceramic substrate, and creating at least one catalytic coating upon the honeycombed ceramic substrate, wherein the catalytic coating in proximity to a VOC results in inducing the transfer of at least one electron from the VOC.
  • the catalytic coating may comprise any of the catalytic materials described in the present disclosure.
  • Some embodiments may include a catalytic material made according to the method described above.
  • any disjunctive word and/or phrase presenting two or more alternative terms should be understood to contemplate the possibilities of including one of those terms, either of the terms, or both terms.
  • the phrase “A or B” will be understood to include the possibilities of “A” or “B” or “A and B”.
  • the phrase “A and/or B” will be understood to include the possibilities of “A” or “B” or “A and B”.
  • Embodiment 3 The catalytic material of embodiment 2, wherein M is independently selected from Ti, Sn, Zr, Ce, Hf, Mn, Ge, Si, or combinations thereof.
  • Embodiment 11 The catalytic material of embodiment 1 , wherein the catalytic material decomposes the volatile organic compound at a temperature less than 40 Q C and greater than 10 Q C.
  • Embodiment 20 The method of embodiment 19, wherein the at least one catalytic coating comprises the catalytic material as in embodiments 1 , 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 , 12, 13, 14, 15, 16, 17, or 18.
  • Table 1 summarizes various supports used for loading Pt wt. % ratio.
  • the examples of Table 1 are simply to provide illustrations of some embodiments of the present disclosure and are in no-way limiting.
  • the reduced-P25 was redispersed in 100 mL of water and the dispersion was transferred to a 250 mL beaker. After 30 mins vigorous stirring, 2.65 wt% Pt ions were added to the solution. The stirring was continued for another 60 mins to impregnate the Pt on reduced TiO2 surface.
  • the surface Pt-ions were reduced using 10 mL (0.1 mole/L) NaBH4 and 10 mL (0.5 mole/L) NaOH mixture. After 1 h, the solid Pt-Na, B/ Anatase TiO2 were separated using centrifugation and washed with water to remove the unreacted Pt ions and NaBH4. The inorganic powder sample was dried at 105 -C for 2 h.
  • Step 3 Preparation of (2.65%Pt/reduced-P25+ST01 ,80:20) composite and filter:
  • Table 2 is a summary of some example homogenous aqueous physical mixtures made for dip coating process.
  • the examples of Table 2 are simply to provide illustrations of some embodiments of the present disclosure and are in no-way limiting.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
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  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
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Abstract

La présente invention concerne un matériau catalytique résistant à la désactivation pour décomposer un composé organique volatil, comprenant un premier élément catalytique comprenant un premier métal noble supporté sur un matériau conducteur, et un second élément catalytique comprenant un second métal noble supporté sur un oxyde semi-conducteur de type n comprenant au moins un groupe hydroxyle sur une surface de l'oxyde semi-conducteur de type n, et un procédé de fabrication de celui-ci.
PCT/US2022/082181 2021-12-21 2022-12-21 Matériaux catalytiques résistant à la désactivation et leur procédé de fabrication WO2023122693A1 (fr)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4241451A1 (de) * 1991-12-21 1993-12-16 Franz Dietrich Oeste Verfahren und Vorrichtungen zur Reinigung von Gasen, Abgasen, Dämpfen und Solen von unerwünschten chemischen Stoffen
WO2012046138A1 (fr) * 2010-10-08 2012-04-12 Toyota Jidosha Kabushiki Kaisha Particules de catalyseur, particules de catalyseur supportées par du carbone, et catalyseurs de pile à combustible, et procédés de fabrication de ces particules de catalyseur et particules de catalyseur supportées par du carbone
US20130022524A1 (en) * 2009-08-24 2013-01-24 Centre National De La Recherche Scientifique (C.N.R.S) Catalyst for the photocalytic treatment of gaseous media containing carbon monoxide
US20130180861A1 (en) * 2010-09-16 2013-07-18 Northeastern University Photocatalyst with enhanced stability for hydrogen production and oxidative reactions
WO2014151861A1 (fr) * 2013-03-15 2014-09-25 Nitto Denko Corporation Matériaux hétérogènes photocatalytiques multivalents pour semi-conducteurs
EP3266838A1 (fr) * 2015-02-26 2018-01-10 LG Hausys, Ltd. Composition pour revêtement de photocatalyseur actif en lumière visible, et filtre de purification d'air

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4241451A1 (de) * 1991-12-21 1993-12-16 Franz Dietrich Oeste Verfahren und Vorrichtungen zur Reinigung von Gasen, Abgasen, Dämpfen und Solen von unerwünschten chemischen Stoffen
US20130022524A1 (en) * 2009-08-24 2013-01-24 Centre National De La Recherche Scientifique (C.N.R.S) Catalyst for the photocalytic treatment of gaseous media containing carbon monoxide
US20130180861A1 (en) * 2010-09-16 2013-07-18 Northeastern University Photocatalyst with enhanced stability for hydrogen production and oxidative reactions
WO2012046138A1 (fr) * 2010-10-08 2012-04-12 Toyota Jidosha Kabushiki Kaisha Particules de catalyseur, particules de catalyseur supportées par du carbone, et catalyseurs de pile à combustible, et procédés de fabrication de ces particules de catalyseur et particules de catalyseur supportées par du carbone
WO2014151861A1 (fr) * 2013-03-15 2014-09-25 Nitto Denko Corporation Matériaux hétérogènes photocatalytiques multivalents pour semi-conducteurs
EP3266838A1 (fr) * 2015-02-26 2018-01-10 LG Hausys, Ltd. Composition pour revêtement de photocatalyseur actif en lumière visible, et filtre de purification d'air

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