CN109475804A - 用于过滤器基质的废气催化剂和催化剂粘合剂 - Google Patents

用于过滤器基质的废气催化剂和催化剂粘合剂 Download PDF

Info

Publication number
CN109475804A
CN109475804A CN201780045339.5A CN201780045339A CN109475804A CN 109475804 A CN109475804 A CN 109475804A CN 201780045339 A CN201780045339 A CN 201780045339A CN 109475804 A CN109475804 A CN 109475804A
Authority
CN
China
Prior art keywords
catalyst
catalyst article
molecular sieve
filter
exhaust gas
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
CN201780045339.5A
Other languages
English (en)
Inventor
G·钱德勒
K·弗拉纳根
D·马弗尔
A·格林
P·菲利普斯
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Johnson Matthey PLC
Original Assignee
Johnson Matthey PLC
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 Johnson Matthey PLC filed Critical Johnson Matthey PLC
Publication of CN109475804A publication Critical patent/CN109475804A/zh
Pending legal-status Critical Current

Links

Classifications

    • 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
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
    • B01J35/56—Foraminous structures having flow-through passages or channels, e.g. grids or three-dimensional monoliths
    • 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
    • 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
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • 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
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • B01D53/9404—Removing only nitrogen compounds
    • B01D53/9409—Nitrogen oxides
    • B01D53/9413—Processes characterised by a specific catalyst
    • B01D53/9418—Processes characterised by a specific catalyst for removing nitrogen oxides by selective catalytic reduction [SCR] using a reducing agent in a lean exhaust gas
    • 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
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • B01D53/944—Simultaneously removing carbon monoxide, hydrocarbons or carbon making use of oxidation catalysts
    • 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
    • B01J21/02—Boron or aluminium; Oxides or hydroxides thereof
    • B01J21/04—Alumina
    • 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
    • B01J23/20—Vanadium, niobium or tantalum
    • B01J23/22—Vanadium
    • 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
    • B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
    • B01J23/44—Palladium
    • 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
    • B01J23/46—Ruthenium, rhodium, osmium or iridium
    • B01J23/462—Ruthenium
    • 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
    • B01J23/46—Ruthenium, rhodium, osmium or iridium
    • B01J23/464—Rhodium
    • 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
    • B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/72—Copper
    • 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
    • B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/74—Iron group metals
    • B01J23/745—Iron
    • 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
    • B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/74—Iron group metals
    • B01J23/755—Nickel
    • 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
    • B01J29/00—Catalysts comprising molecular sieves
    • B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
    • B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • B01J29/061—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof containing metallic elements added to the zeolite
    • 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
    • B01J29/00—Catalysts comprising molecular sieves
    • B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
    • B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • B01J29/064—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof containing iron group metals, noble metals or copper
    • 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
    • B01J29/00—Catalysts comprising molecular sieves
    • B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
    • B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • B01J29/064—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof containing iron group metals, noble metals or copper
    • B01J29/068—Noble 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
    • B01J29/00—Catalysts comprising molecular sieves
    • B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
    • B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • B01J29/064—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof containing iron group metals, noble metals or copper
    • B01J29/072—Iron group metals or copper
    • 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
    • B01J29/00—Catalysts comprising molecular sieves
    • B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
    • B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • B01J29/076—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof containing arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • 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
    • B01J29/00—Catalysts comprising molecular sieves
    • B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
    • B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • B01J29/70—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65
    • B01J29/7015—CHA-type, e.g. Chabazite, LZ-218
    • 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
    • B01J29/00—Catalysts comprising molecular sieves
    • B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
    • B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • B01J29/70—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65
    • B01J29/7049—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65 containing rare earth elements, titanium, zirconium, hafnium, zinc, cadmium, mercury, gallium, indium, thallium, tin or lead
    • 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
    • B01J29/00—Catalysts comprising molecular sieves
    • B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
    • B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • B01J29/70—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65
    • B01J29/72—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65 containing iron group metals, noble metals or copper
    • 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
    • B01J29/00—Catalysts comprising molecular sieves
    • B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
    • B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • B01J29/70—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65
    • B01J29/72—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65 containing iron group metals, noble metals or copper
    • B01J29/723—CHA-type, e.g. Chabazite, LZ-218
    • 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
    • B01J29/00—Catalysts comprising molecular sieves
    • B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
    • B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • B01J29/70—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65
    • B01J29/72—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65 containing iron group metals, noble metals or copper
    • B01J29/74—Noble metals
    • B01J29/743—CHA-type, e.g. Chabazite, LZ-218
    • 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
    • B01J29/00—Catalysts comprising molecular sieves
    • B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
    • B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • B01J29/70—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65
    • B01J29/72—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65 containing iron group metals, noble metals or copper
    • B01J29/76—Iron group metals or copper
    • 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
    • B01J29/00—Catalysts comprising molecular sieves
    • B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
    • B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • B01J29/70—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65
    • B01J29/72—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65 containing iron group metals, noble metals or copper
    • B01J29/76—Iron group metals or copper
    • B01J29/763—CHA-type, e.g. Chabazite, LZ-218
    • 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
    • B01J29/00—Catalysts comprising molecular sieves
    • B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
    • B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • B01J29/70—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65
    • B01J29/78—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65 containing arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J29/783—CHA-type, e.g. Chabazite, LZ-218
    • 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
    • B01J29/00—Catalysts comprising molecular sieves
    • B01J29/82—Phosphates
    • B01J29/84—Aluminophosphates containing other elements, e.g. metals, boron
    • B01J29/85—Silicoaluminophosphates [SAPO compounds]
    • 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
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/19—Catalysts containing parts with different compositions
    • 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
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/40—Catalysts, in general, characterised by their form or physical properties characterised by dimensions, e.g. grain size
    • 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
    • B01J37/0009—Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst
    • 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
    • B01J37/0246—Coatings comprising a zeolite
    • 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
    • B01J37/03—Precipitation; Co-precipitation
    • B01J37/038—Precipitation; Co-precipitation to form slurries or suspensions, e.g. a washcoat
    • 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
    • B01J37/30—Ion-exchange
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/022—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
    • F01N3/0222—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous the structure being monolithic, e.g. honeycombs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/033—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
    • F01N3/035—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2066—Selective catalytic reduction [SCR]
    • 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
    • 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
    • B01D2255/10—Noble metals or compounds thereof
    • B01D2255/102—Platinum group metals
    • B01D2255/1023—Palladium
    • 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
    • B01D2255/1025—Rhodium
    • 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
    • B01D2255/1026—Ruthenium
    • 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
    • B01D2255/20723—Vanadium
    • 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
    • B01D2255/20738—Iron
    • 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
    • B01D2255/20753—Nickel
    • 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
    • B01D2255/20761—Copper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/50—Zeolites
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/90—Physical characteristics of catalysts
    • B01D2255/915—Catalyst supported on particulate filters
    • B01D2255/9155—Wall flow filters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/90—Physical characteristics of catalysts
    • B01D2255/92—Dimensions
    • B01D2255/9202—Linear dimensions
    • 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
    • B01J2229/00—Aspects of molecular sieve catalysts not covered by B01J29/00
    • B01J2229/10—After treatment, characterised by the effect to be obtained
    • B01J2229/18—After treatment, characterised by the effect to be obtained to introduce other elements into or onto the molecular sieve itself
    • 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
    • B01J2229/00—Aspects of molecular sieve catalysts not covered by B01J29/00
    • B01J2229/10—After treatment, characterised by the effect to be obtained
    • B01J2229/18—After treatment, characterised by the effect to be obtained to introduce other elements into or onto the molecular sieve itself
    • B01J2229/186—After treatment, characterised by the effect to be obtained to introduce other elements into or onto the molecular sieve itself not in framework positions
    • 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
    • B01J2229/00—Aspects of molecular sieve catalysts not covered by B01J29/00
    • B01J2229/10—After treatment, characterised by the effect to be obtained
    • B01J2229/26—After treatment, characterised by the effect to be obtained to stabilize the total catalyst structure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2370/00—Selection of materials for exhaust purification
    • F01N2370/02—Selection of materials for exhaust purification used in catalytic reactors

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Environmental & Geological Engineering (AREA)
  • Biomedical Technology (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Toxicology (AREA)
  • Catalysts (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Processes For Solid Components From Exhaust (AREA)

Abstract

提供一种催化剂载体涂层，其包含：(i)负载有约1‑10wt％的至少非铝促进剂金属的分子筛(其中促进剂金属的wt％以分子筛重量计)；和(ii)约1‑30wt％d90颗粒粒度小于10微米的粘合剂(其中粘合剂的wt％以载体涂层总重量计)。在本发明的另一个方面，将催化剂载体涂层施用于壁流式过滤器形成催化剂制品。在本发明的另一个方面，所述催化剂制品是废气处理系统的一部分。在本发明的另一个方面，提供了应用所述催化剂制品处理废气的方法。

Description

用于过滤器基质的废气催化剂和催化剂粘合剂
技术领域
本发明涉及用于改进涂覆在壁流式过滤器上的沸石催化剂的粘合性的粘合剂。
背景技术
当燃料如天然气、汽油、柴油燃料或煤在燃烧室内燃烧时，所得的废气通过废气管、烟道气筒等排放至大气。通常，大多数废气包含大量相对良性的(N2)、水蒸汽(H2O)和二氧化碳(CO2)；但通常也包含相对少量的有毒和/或有害物质，如来自不完全燃烧的一氧化碳(CO)、来自未燃烧燃料的烃(HC)、由于燃烧温度过高造成的氮氧化物(NOx)以及颗粒物(主要是烟灰)。烟灰和包含一氧化氮(NO)、二氧化碳(NO2)和一氧化二氮(N2O)在内的氮氧化物(NOx)的产生在贫燃发动机如用于移动应用的柴油发动机中是特别重要的问题。因此，希望从废气中清除这些不想要的组分，优选的方法是其中不产生其它有毒有害物质的方法。
含有促进剂金属的沸石和其它分子筛是已知的用于处理废气的非均相催化剂，特别是通过选择性催化还原(SCR)过程处理。当在废气系统中应用时，将载体涂层形式的沸石基SCR催化剂作为涂层施用于高表面积基质上，如流通式蜂窝状或壁流式过滤器。载体涂层部分用于在大表面上分散催化剂材料。催化剂载体涂层通常包含一种或多种粘合剂，如氧化铝、二氧化硅、二氧化钛、二氧化铈和氧化锆。正如这里所应用，术语“粘合剂”指有利于催化剂载体涂层或其组分相互粘合和/或粘合于基质的材料。
粘合剂的选择取决于其目的用途。重要的考虑因素包括在正常或预期操作期间其与催化剂表面的相互作用、基质的表面化学、催化剂载体涂层打算应用的反应条件(温度、水含量等)。
发明内容
申请人意外地发现某些d90颗粒粒度范围小于10微米的金属氧化物粘合剂如氧化铝能够增强涂覆到蜂窝状壁流式过滤器上的分子筛基催化剂的性能。所述性能改进包括更好的高温性能、更好的选择性、降低的背压和/或改进的高温热耐受性。
正如这里所应用，术语“载体涂层”指施用于基质上或设计用于施用于基质上的包含催化剂组分和粘合剂的组合物。所述载体涂层可以为各种形式，包括浆液、悬浮液或溶液(在施用于基质前)、或在基质表面上和/或孔内的涂层。载体涂层的其它形式包括已经干燥和/或煅烧的涂层。通常，载体涂层用作催化剂组分的载体，以利于催化剂施用于基质表面和/或孔。
因此，提供一种催化剂载体涂层，其包含：(i)负载有约1-10wt％的至少非铝促进剂金属的分子筛(其中促进剂金属的wt％以分子筛重量计)；和(ii)约1-30wt％d90颗粒粒度小于10微米的粘合剂(其中粘合剂的wt％以载体涂层总重量计)。
本发明还涉及包含所述催化剂载体涂层的催化剂制品。将所述催化剂载体涂层施用于壁流式过滤器上形成催化剂制品。
本发明还涉及包括所述催化剂制品的废气处理系统。所述催化剂制品是废气处理系统的一部分。
在本发明的另一个方面，提供应用所述催化剂制品处理废气的方法。
附图说明
图1给出了蜂窝状壁流式过滤器；
图2为本发明结构的剖面图，其中将催化剂载体涂层施用于蜂窝状壁流式过滤器上；和
图3为包括催化壁流式过滤器的系统图。
具体实施方式
本发明涉及改进的组合物、催化剂制品和用于减少废气中NOx和烟灰的方法。优选地，减少NOx和烟灰包括将催化载体涂层施用于适合从废气物流中脱除柴油颗粒的蜂窝状壁流式过滤器基质上。优选地，所述催化载体涂层包括金属促进的分子筛和优选增强分子筛与壁流式过滤器基质间粘合性的粘合剂。
在本发明中应用的分子筛可以具有按International Zeolite Association定义的CHA、AEI、AFX、AFT、ERI、LEV或KFI晶体框架。这些包括天然存在(即矿物的)和合成的分子筛，但优选为合成分子筛，因为这种分子筛倾向于具有更均匀的二氧化硅-氧化铝比(SAR)、晶体粒度和晶体形态，和具有更少和更不浓缩的杂质(如碱土金属)。天然和合成分子筛间的区分并不是任意的，而是反映材料间特性的差别，这可能反过来导致本发明方法活性的差异。
可用于本发明的具体分子筛包括但不限于SSZ-13、SSZ-62、SSZ-39、SAPO-34和SAPO-18。
可用于本发明的其它分子筛为具有PAU、UFI或DDR框架结构的铝硅酸盐。这种分子筛是可商购的。
特别优选的分子筛框架为CHA。
甚至更优选的分子筛框架为AEI。
优选的铝硅酸盐分子筛的二氧化硅-氧化铝摩尔比可以大于约8，更优选为约10-50，如约10-20和约10-15和约20-25。分子筛的SAR可以由常规分析来确定。该比值尽可能接近地表示分子筛晶体的原子框架中二氧化硅-氧化铝的比，和优选去除粘合剂中或通道内的阳离子或其它形式的铝。应理解在与粘合剂材料组合后，可能极难直接测量分子筛的二氧化硅-氧化铝比。因此，二氧化硅-氧化铝比按上述母分子筛(即用于制备催化剂的分子筛)的二氧化硅-氧化铝比表示，在将分子筛引入载体涂层之前测量。
分子筛优选可以进行离子交换以将一种或多种促进剂金属引入分子筛。促进剂金属可以为任意非铝的催化活性金属，其可以被交换到分子筛材料上和/或结合入分子筛框架中，和可用于催化性减小汽车废气中的不想要组分(如CO、HC、NOx、NH3、烟灰)的浓度。
可以结合分子筛应用至少一种促进剂金属来增强所述催化剂的性能。正如这里所应用，术语"金属促进的分子筛”指通过离子交换(即金属交换的分子筛)、浸渍、同形取代等向其中加入非铝的一种或多种金属的分子筛。
金属交换的分子筛在如下方面区别于金属取代的分子筛：前者不向分子筛框架本身中引入促进剂金属，而后者直接向分子筛框架中引入促进剂金属。该区别不绝对，但代表了催化性能的重要差别。金属在分子筛内的位置影响其作为催化活性位的可获得性。
促进剂金属包括：贵金属如金和银、铂族金属(PGM)如钯(Pd)、铂(Pt)、铑(Rh)和钌(Ru)；和过渡金属，如铜(Cu)、镍(Ni)、锌(Zn)、铁(Fe)、锡(Sn)、钨(W)、钼(Mo)、钴(Co)、铋(Bi)、钛(Ti)、锆(Zr)、锑(Sb)、锰(Mn)、铬(Cr)、钒(V)、铌(Nb)；以及它们中两种或更多种的组合。优选的促进剂金属包括Cu、Fe、Pd、Pt、V、Ce、Nb、Ru、Rh、Mo和Mn。特别优选的促进剂金属为Cu。另一种特别优选的促进剂金属为Fe。另一种特别优选的促进剂金属为Pd。
另外，可以结合促进剂金属应用其它金属，包括钙和稀土金属，特别是铈、钕、铕和钆。
所述分子筛和/或载体涂层可以不含或基本不含除过渡金属以外的任意促进剂金属。所述分子筛和/或载体涂层可以不含或基本不含除PGM以外的任意促进剂金属。所述分子筛和/或载体涂层可以不含或基本不含任意稀土金属。所述分子筛和/或载体涂层可以不含或基本不含任意的PGM。所述分子筛和/或载体涂层可以不含或基本不含除铜以外的任意非铝过渡金属。所述分子筛和/或载体涂层可以不含或基本不含除铁以外的任意非铝过渡金属。正如这里所应用，术语“基本不含”指如果在催化剂组合物中存在所述金属，则其存在浓度对催化剂的理想催化转化性能的改变相对于不含所述金属的催化剂少于1％，或者以分子筛的总重量计所述金属的存在量小于0.1wt％。
在一个实施例中，金属交换的分子筛可以通过将分子筛混入含催化活性金属的可溶性前体的溶液中形成。例如可以通过加入氢氧化铵调节溶液的pH，以诱导催化活性阳离子沉积到分子筛结构上或其内部。例如，可以将菱沸石浸渍于含硝酸铜的溶液中足够时间以通过离子交换将催化活性铜阳离子引入分子筛结构中，和然后加入氢氧化铵以通过沉积将溶液中未交换的铜离子引入分子筛结构中。然后可以洗涤、干燥和煅烧所述金属促进的分子筛。当铁或铜用作金属阳离子时，催化材料的金属重量含量(相对于分子筛材料)优选为约0.1-10wt％，如约1-6wt％、约0.5-1wt％和优选约2.5-5wt％。
然后所得的催化分子筛材料可以在约100-120℃干燥过夜，和在温度至少约550℃下煅烧。
在本发明中应用的铝硅酸盐分子筛可以包括那些已经进行处理以提高水热稳定性的分子筛。用于改进水热稳定性的传统方法包括：(i)汽蒸脱铝和用酸或复合剂如(EDTA—乙二胺四乙酸)进行酸萃取；用酸和/或复合剂进行处理；用SiCl4的气相物流进行处理(用Si替换分子筛框架中的Al)；和(ii)应用多价阳离子如La阳离子交换。
所述粘合剂可以为氧化铝、二氧化硅、非沸石二氧化硅-氧化铝、二氧化铈、二氧化铈-氧化锆、二氧化钛和它们的混合物。氧化铝是优选的，和可以为多种晶体结构，包括alpha(α)、beta(β)、gamma(γ)、delta(δ)、eta(η)、theta(θ)和chi(χ)氧化铝，其中γ氧化铝和θ氧化铝是最优选的。
所述粘合剂的比表面积优选大于约100m2/g，如大于约200m2/g，或为约100-400m2/g。
所述粘合剂的平均孔径可以大于约如大于约
所述氧化铝粘合剂的d90颗粒粒度可以优选小于10微米，更优选小于5微米和甚至更优选小于1微米，特别是当其分散时。所述d90颗粒粒度优选小于约10和大于约0.1微米，优选为约0.1-1.0微米。在这里，术语“d90”指90wt％的粘合剂颗粒的颗粒粒度小于给定值。颗粒粒度可以按颗粒长度或颗粒直径测量。当测量直径时，可以将颗粒近似为基于等体积的等价球形。可以应用适合于测量用于粘合剂中的氧化铝颗粒类型的任意常规方法确定d90颗粒粒度。测量技术的例子包括激光衍射和图像分析。虽然不同测量技术可能导致稍有不同的d90颗粒粒度值，但所有常规技术据认为均在本发明范围内。
除了平均颗粒粒度，氧化铝的颗粒粒度分布可以优选较窄，从而颗粒样品具有约1或更小的平均偏差。粘合剂可以具有约5-150nm的平均晶体粒度和/或约15微米至约500nm的平均分散颗粒粒度和/或相对标准偏差不大于50％的平均分散颗粒粒度。
以载体涂层的重量计，粘合剂的典型存在量可以为约1-35wt％，优选为约5-25wt％，甚至更优选为约10-20wt％。
在一个实例中，可以通过使金属促进的分子筛、优选为铜或铁交换的分子筛与优选主要包含氧化铝的粘合剂掺混形成浆液(优选含水浆液)而形成催化载体涂层。
氧化铝粘合剂可以将Cu或Fe固定在载体涂层中，从而防止其与分子筛的框架氧化铝相互作用。
所述载体涂层还可以包含一种或多种稳定剂，如包括镧的稀土金属、孔形成剂或加入Ce和/或Ca用于温度高达900℃的热耐用性。
所述载体涂层可以为基本不含除金属交换的分子筛以外的赋予NO减少催化活性的物质。所述载体涂层可以基本不含镧或其它稀土稳定剂。
可以将所述催化载体涂层施用于基质上。用于移动应用的优选基质为具有所谓蜂窝状结构的整块材料，其包括多个相邻的平行通道，每一个通道典型地具有方形、圆形、六边形或三角形截面。其它基质包括可以以任何方式的层出现的片材或丝网，包括例如堆叠、卷绕或绕中心轴排列。
蜂窝状形状提供具有最小整体粒度和压力降的大催化表面。所述分子筛催化剂可以沉积于流通式整块基质(如具有许多轴向运行通过整个部件的小的平行通道的蜂窝状整块催化剂载体结构)或过滤器整块基质如壁流式过滤器等之上。可以将分子筛催化剂形成为挤出类型的催化剂。可以优选以足够量将所述分子筛催化剂涂覆于基质上，以还原流过所述基质的废气物流中包含的NOx。
所述基质优选由一种或多种材料构成，所述材料包括作为主导相的钛酸铝、堇青石、碳化硅、氮化硅、氧化锆、莫来石、氧化铝-二氧化硅-氧化镁、硅酸锆、陶瓷纤维复合材料，其中钛酸铝是特别优选的。所述过滤器可以钝化或未钝化。
本发明的催化剂制品和废气处理系统可以用来减少废气物流中的颗粒物。优选的过滤器基质包括柴油颗粒过滤器，和更优选为用于移动应用的柴油颗粒过滤器。除了堇青石、碳化硅和陶瓷外，可以用作多孔基质的其它材料包括但不限于氧化铝二氧化硅、氮化铝、氮化硅、钛酸铝、α-氧化铝、莫来石、铯沸石、锆石、氧化锆、尖晶石、硼化物、长石、二氧化钛、熔合的二氧化硅、硼化物、陶瓷纤维复合材料、它们中任意的混合物或包含它们中任意两种或更多种的片断的复合物。特别优选的基质包括堇青石、碳化硅和钛酸铝(AT)，其中AT为主要的晶体相。
用于柴油发动机的壁流式过滤器基质通常具有约100-800cpsi(每平方英寸的通道数)，例如为约100-400cpsi、约200-300cpsi或约500-600cpsi。
所述壁的平均壁厚可以为约0.1-1.5mm，例如约0.15-0.25mm，约0.25-0.35mm，或约0.25-0.50mm。
用于本发明中的壁流式过滤器的效率优选为至少70％、至少约75％、至少约80％或至少约90％。所述效率可以优选为约75-99％、约75-90％、约80-90％或约85-95％。在这里，所述效率相对于烟灰和其它类似粒度的颗粒和相对于常规柴油机废气中通常存在的颗粒浓度。例如，柴油机废气中的颗粒的粒度可以为约0.05-2.5微米。因此，所述效率可以基于此范围或子范围，如0.1-0.25微米、0.25-1.25微米或1.25-2.5微米。
过滤器可用的孔隙率和平均孔径范围没有特别限制，但其与催化剂涂层的颗粒粒度和粘度有关或用于确定这两者。正如这里所述，过滤器基质的孔隙率和平均孔径基于过滤器本身(例如没有催化剂涂层)确定。通常，基质的孔隙率为至少约40％、更优选至少约50％，例如约50-80％、约50-70％或约55-65％。孔隙率可以通过任何合适的方法测量，包括汞孔率测定法。通常，基质的平均孔径可以为约8-40μm，例如约8-12μm、约12-20μm或约15-25μm。以总孔体积和/或总孔数计，至少约50％和更优选至少约75％的孔可以在上述范围内。平均孔径可以由任何可接受的方法确定，包括汞孔率测定法。所述过滤器基质的平均孔径可以为约12-15μm和孔隙率可以为约50-55％。所述过滤器基质的平均孔径可以为约18-20μm和孔隙率可以为约55-65％。
制造蜂窝状壁流式过滤器可以包括加工挤出的壁，然后烧制。烧制后用堵塞材料合适地密封交替的通道开口，以提供上文所述的结构。替代地，烧制前可以用后堵塞材料密封挤出的壁。所述堵塞材料应该与多孔壁材料兼容，表现出良好的物理和化学稳定性，和为多孔壁提供稳定的、良好粘合的和长期的密封。
当在过滤器上积累了太多烟灰时，必须被动或主动地再生过滤器。通过氧化过滤器上累积的烟灰而实施再生。正如这里所应用，术语“烟灰”和“柴油颗粒物质”可以互换使用。不能定期再生过滤器将会造成烟灰累积的增加，导致过滤器压力降增加至不可接受的水平。
在被动再生中，在常规车辆操作中降低烟灰氧化温度至允许自动再生的水平—通常通过催化活性实现的任务。过滤器上的催化剂可以促进碳通过两种机理氧化：碳被氧催化氧化，或NO催化氧化为NO2，随后二氧化氮氧化碳。主动再生包括通过应用外部能源如直接注入废气物流中的燃料的燃烧或通过发动机管理方法提高在过滤器中捕集的烟灰的温度。另一种外部能源为通过加热元件提供的电。可以应用主动和被动再生的组合。
过滤器再生可能包括大于650℃的温度，例如650-950℃、750-900℃或800-900℃。相比于应用d90颗粒粒度大于10微米或d90颗粒粒度大于5微米的粘合剂的类似催化剂，结合本发明的金属促进的分子筛选择粘合剂意外地导致更高的热稳定性(即催化剂承受高温而不发生不可逆降解的能力)和/或在更高温度下改进的催化转化率。
相比于裸过滤器来说，将这里描述的催化载体涂层施用于壁流式过滤器优选不明显增加过滤器的背压。这里描述的催化剂制品的背压可以达到类似操作条件(如空速和烟灰负载量)下的类似裸过滤器背压的15％以内，更优选10％以内。这里描述的催化剂制品可以达到的背压小于具有类似催化剂和载体涂层负载量的类似壁流式过滤器所达到的背压，优选小至少5％或小至少10％，只是所述类似催化剂包含d90颗粒粒度大于10微米或d90颗粒粒度大于5微米的粘合剂。正如这里所应用，术语“背压”指通过催化过滤器的废气压降。
限制背压是废气系统中催化过滤器的重要特性。背压水平增加，发动机气必须将废气压缩至更高压力，这涉及更多的机械功和/或由废气透平抽取的能量更少，这可能影响进气歧管压力。这可能导致燃料消耗、PM和CO排放以及排放温度的增加。
除了柴油颗粒脱除外，这里描述的催化剂制品还可以通过捕集/吸附NOx或应用还原剂选择性还原NOx为N2和H2O而有效减少废气系统中的NOx和/或NH3。可以配制催化剂以有利于用氨还原氮氧化物(即SCR催化剂)。可以配制催化剂以有利于用氧氧化氨(即氨氧化(AMOX)催化剂)。SCR催化剂和AMOX催化剂可以串联使用，其中这两种催化剂均包含这里描述的含金属的分子筛，和其中所述SCR催化剂位于AMOX催化剂上游。AMOX催化剂可以作为顶层位于氧化底层上，其中所述底层包含铂族金属(PGM)催化剂或非PGM催化剂。
用于SCR方法的还原剂(也称为还原剂)宽泛地指促进废气中NOx还原的任何化合物。用于本发明的还原剂的例子包括氨、肼和任何合适的氨前体如脲((NH2)2CO)、碳酸铵、氨基甲酸铵、碳酸氢铵或甲酸铵以及烃如柴油燃料等。特别优选的还原剂为氮基的，其中氨是特别优选的。
按照本发明的另一个方面，提供用于气体中NOx化合物还原或NH3氧化的方法，所述方法包括使所述气体与这里描述的用于催化还原NOx化合物的催化剂组合物接触足够时间，以降低气体中NOx化合物的浓度。氮氧化物可以用还原剂在至少100℃的温度下还原。氮氧化物可以用还原剂在约150-750℃的温度下还原。温度范围可以为175-650℃。温度范围可以为175-550℃。温度范围可以为450-750℃，优选为450-700℃、450-650℃。大于450℃的温度对于处理来自配备有废气系统的重载和轻载柴油发动机的废气特别有用，所述废气系统包括(任选催化的)柴油颗粒过滤器，该过滤器为主动再生的，例如通过在过滤器上游向废气系统中注入烃，其中用于本发明的分子筛催化剂放置于过滤器的下游。
氮氧化物还原可以在氧存在下实施。
氮氧化物还原可以在无氧下实施。
这种方法可以针对源于燃烧过程的气体实施，例如源于内燃机(不管是移动还是静止的)、气体透平和燃煤或燃油电厂的气体。这种方法也用于处理来自工业过程如炼厂、炼厂加热器和锅炉、工业炉、化学处理工业、焦炭炉、市政废物装置和焚烧炉、咖啡烘烤装置等的气体。所述方法也可用于处理来自车用贫燃内燃机如柴油发动机、贫燃汽油发动机或由液化石油气或天然气驱动的发动机的废气。
按照另一个方面，本发明提供用于车用贫燃内燃机的废气系统，所述系统包括用于运送流动废气的管道、含氮还原剂的来源和这里描述的分子筛催化剂。所述系统可以包括在使用时用于控制计量设施的设施，从而只有当确定分子筛催化剂能够在或高于理想效率下如在高于100℃、高于150℃或高于175℃催化还原NOx时，含氮还原剂可以计量加入流动的废气中。控制设施的确定可以由指示选自如下的发动机条件的一个或多个合适传感器的输入来辅助：废气温度、催化剂床层温度、加速器位置、系统中废气的质量流率、歧管真空、点火时间、发动机速度、废气的lambda值、注入发动机的燃料量、废气循环(EGR)阀的位置以及相应的EGR量和推动压力。
可以响应于直接(应用合适的NOx传感器)或间接确定的废气中的氮氧化物的量控制计量，如应用存贮在控制设施中的预先关联的查询表或图(其将任意一个或多个指示发动机条件的上述输入与预测的废气中的NOx含量进行了关联)。可以设置含氮还原剂的计量，从而60-200％的理论氨可以存在于进入SCR催化剂的废气中，按1:1NH3/NO和4:3NH3/NO2计算。所述控制设施可以包含预编程的处理器，如电子控制单元(ECU)。
用于氧化废气中的一氧化氮为二氧化氮的氧化催化剂可以位于向废气中计量加入含氮还原剂的点的上游。可以调节所述氧化催化剂，以例如在氧化催化剂入口废气温度为250-450℃下使进入SCR分子筛催化剂的气体物流中NO对NO2体积比为约4:1-1:3。所述氧化催化剂可以包含至少一种铂族金属(或它们的一些组合)，如在流通式整块基质上涂覆的铂、钯或铑。所述至少一种铂族金属可以为铂和/或钯。铂族金属可以载带于高表积载体涂层组分如氧化铝、分子筛如铝硅酸盐分子筛、二氧化硅、非-沸石二氧化硅氧化铝、二氧化铈、氧化锆、二氧化钛或包含二氧化铈和氧化锆两者的混合或复合氧化物上。
在本发明中应用的分子筛催化剂可以涂覆于位于氧化催化剂下游的过滤器上。当过滤器包含在本发明中应用的分子筛催化剂时，计量加入含氮还原剂的点可以优选位于氧化催化剂和过滤器之间。
在另一个方面，提供包含本发明废气系统的车用贫燃发动机。所述车用贫燃内燃机可以是柴油发动机、贫燃汽油发动机或由液化石油气或天然气驱动的发动机。
参见图1和2，给出了用于车辆废气系统的壁流式过滤器基质10的一部分。所述壁流式基质具有多个通道11，这些通道近似相互平行，并且由过滤器的前面12沿通过基质的气流轴17(即废气进入和纯化气离开的方向28)延伸至后面13。用于柴油发动机的壁流式过滤器基质可以包含400-800个通道，但是为了简化在这些图中只给出了少量通道。所述通道由含催化载体涂层的多孔壁15确定。相对于通过所述壁的气体流动方向，所述多孔壁具有上游侧18和下游侧19。催化剂载体涂层可以为多孔壁上游侧全部或一部分上的表面涂层、多孔壁下游侧全部或一部分上的表面涂层、全部或部分在多孔壁内或这些中的两种或更多种的一些组合。
约一半通道在过滤器前面有前端堵塞14，和另一半通道在过滤器的后面有后端堵塞16。通过这种排布，废气不能直接流过给定入口通道，而被强迫流过分隔的多孔壁进入相邻的出口通道。因此在废气流过相邻通道之间的多孔壁时过滤废气。
参见图10，其中给出了废气处理系统，所述系统包括内燃机501、废气处理系统502、通过系统的废气流动方向1、任选的柴油氧化催化剂(DOC)510和/或任选的NOx吸附催化剂(NAC)或贫NOx阱(LNT)520、任选的柴油放热催化剂(DEC)570、包括这里描述的催化载体涂层的壁流式过滤器540、任选的外部氨源和注射器530、任选的附加SCR催化剂550和任选的氨逃逸催化剂(ASC)560。

Claims (15)

1.一种催化剂制品，其包含：
a.具有多孔壁的蜂窝状壁流式过滤器；
b.位于至少一部分多孔壁上和/或内部的催化剂载体涂层，其中催化剂载体涂层包含：(i)含有约1-10wt％的至少一种非铝促进剂金属的分子筛，以分子筛总重量计；和(ii)约1-30wt％d90颗粒粒度小于10微米的粘合剂，以载体涂层总重量计。
2.权利要求1的催化剂制品，其中所述d90颗粒粒度小于5微米。
3.权利要求1-2任一项的催化剂制品，其中所述d90颗粒粒度大于1微米。
4.权利要求1-3任一项的催化剂制品，其中所述粘合剂选自氧化铝、二氧化硅、二氧化铈、二氧化钛、氧化锆或其中两种或更多种的组合。
5.权利要求1-3任一项的催化剂制品，其中所述粘合剂为氧化铝。
6.权利要求5的催化剂制品，其中所述氧化铝选自γ-氧化铝和θ-氧化铝。
7.权利要求1-6任一项的催化剂制品，其中所述蜂窝状壁流式过滤器为陶瓷整体。
8.权利要求1-7任一项的催化剂制品，其中所述过滤器由钛酸铝、堇青石、碳化硅、氮化硅、氧化锆、莫来石、氧化铝-二氧化硅-氧化镁、硅酸锆、陶瓷纤维复合材料构成，和任选地其中所述过滤器已经钝化或未钝化。
9.权利要求1-8任一项的催化剂制品，其中所述分子筛为铝硅酸盐或SAPO。
10.权利要求1-9任一项的催化剂制品，其中所述分子筛为具有选自如下的框架的铝硅酸盐：CHA、AEI、AFX、AFT、ERI、LEV或KFI。
11.权利要求1-10任一项的催化剂制品，其中所述分子筛的二氧化硅-氧化铝比(SAR)为约10-50。
12.权利要求1-11任一项的催化剂制品，其中所述框架为AEI。
13.权利要求1-12任一项的催化剂制品，其中所述SAR为约10-20。
14.权利要求1-13任一项的催化剂制品，其中所述促进剂金属选自Cu、Fe、V、Ce、Pt、Pd、Ru、Rh和Ni。
15.权利要求1-4任一项的催化剂制品，其中所述促进剂金属为Cu。
CN201780045339.5A 2016-07-22 2017-07-21 用于过滤器基质的废气催化剂和催化剂粘合剂 Pending CN109475804A (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201662365418P 2016-07-22 2016-07-22
US62/365,418 2016-07-22
PCT/IB2017/054433 WO2018015930A1 (en) 2016-07-22 2017-07-21 Exhaust gas catalyst and catalyst binders for filter substrates

Publications (1)

Publication Number Publication Date
CN109475804A true CN109475804A (zh) 2019-03-15

Family

ID=59762009

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201780045339.5A Pending CN109475804A (zh) 2016-07-22 2017-07-21 用于过滤器基质的废气催化剂和催化剂粘合剂

Country Status (9)

Country Link
US (1) US10744496B2 (zh)
EP (1) EP3487604A1 (zh)
JP (1) JP7378295B2 (zh)
KR (1) KR102515969B1 (zh)
CN (1) CN109475804A (zh)
BR (1) BR112019000978B1 (zh)
DE (1) DE102017116461A1 (zh)
GB (1) GB2554517B (zh)
WO (1) WO2018015930A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107735161A (zh) * 2015-03-03 2018-02-23 巴斯夫公司 NOx吸附剂催化剂、方法和系统
CN113453787A (zh) * 2019-03-29 2021-09-28 庄信万丰股份有限公司 催化剂制品及其用于过滤细小颗粒的用途

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3281698A1 (de) 2016-08-11 2018-02-14 Umicore AG & Co. KG Scr-aktives material
US11105234B2 (en) * 2017-08-11 2021-08-31 Ford Global Technologies, Llc Particulate filters
DE102018116058A1 (de) * 2018-07-03 2020-01-09 Interkat Catalyst Gmbh Verwendung eines Katalysators zur selektiven katalytischen Oxidation von stickstoffhaltigen organischen Verbindungen
CN108892196B (zh) * 2018-07-09 2020-12-29 沈阳理工大学 一种净水材料的制备方法
US20200131961A1 (en) * 2018-10-29 2020-04-30 GM Global Technology Operations LLC Exhaust gas treatment systems and methods for diagnosing the same
WO2020092113A1 (en) * 2018-10-31 2020-05-07 Basf Corporation Catalytic composition with added copper trapping component for nox abatement
CN112969535A (zh) * 2018-10-31 2021-06-15 巴斯夫公司 用于消除NOx的添加了氧化铝的催化洗涂层
CN113557089A (zh) * 2019-03-14 2021-10-26 巴斯夫公司 用于增强催化剂载体涂料粘附性的粘合剂组合物
EP3738663A1 (en) * 2019-05-14 2020-11-18 Johnson Matthey Public Limited Company Exhaust system including paticulate filter with oxidation zone capable of generating no2 under lean conditions
EP3812034A1 (en) * 2019-10-24 2021-04-28 Dinex A/S Durable copper-scr catalyst
EP3919165A1 (en) * 2020-06-03 2021-12-08 Johnson Matthey Public Limited Company Method for forming a catalyst article
GB2603642A (en) * 2021-01-08 2022-08-10 Johnson Matthey Plc Method and composition

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101848764A (zh) * 2007-11-08 2010-09-29 日产自动车株式会社 贵金属负载粉末的制造方法、贵金属负载粉末以及废气净化用催化剂
US20110305614A1 (en) * 2010-04-08 2011-12-15 Basf Corporation Cu-CHA/Fe-MFI Mixed Zeolite Catalyst And Process For The Treatment Of NOx In Gas Streams
US20140044630A1 (en) * 2011-06-21 2014-02-13 Johnson Matthey Public Limited Company Catalyzed substrate and exhaust system for internal combustion engine
US20160193594A1 (en) * 2009-02-26 2016-07-07 Johnson Matthey Public Limited Company Filter for filtering particulate matter from exhaust gas emitted from a compression ignition engine

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6912847B2 (en) * 2001-12-21 2005-07-05 Engelhard Corporation Diesel engine system comprising a soot filter and low temperature NOx trap
EP3626329B1 (en) * 2007-04-26 2021-10-27 Johnson Matthey Public Limited Company Exhaust system comprising copper/zsm-34 zeolite scr catalyst and method of converting nitrogen oxides
EP2497021A4 (en) 2009-11-06 2014-11-26 Optuminsight Inc SYSTEM AND METHOD FOR CONDITIONAL, COST AND PERIOD ANALYZES
GB2475740B (en) * 2009-11-30 2017-06-07 Johnson Matthey Plc Catalysts for treating transient NOx emissions
EP2335810B1 (de) 2009-12-11 2012-08-01 Umicore AG & Co. KG Selektive katalytische Reduktion von Stickoxiden im Abgas von Dieselmotoren
US8293199B2 (en) * 2009-12-18 2012-10-23 Basf Corporation Process for preparation of copper containing molecular sieves with the CHA structure, catalysts, systems and methods
WO2012075400A1 (en) * 2010-12-02 2012-06-07 Johnson Matthey Public Limited Company Zeolite catalyst containing metal
WO2012090922A1 (ja) * 2010-12-27 2012-07-05 三菱樹脂株式会社 窒素酸化物浄化用触媒
JP5938819B2 (ja) 2011-10-06 2016-06-22 ジョンソン、マッセイ、パブリック、リミテッド、カンパニーＪｏｈｎｓｏｎ Ｍａｔｔｈｅｙ Ｐｕｂｌｉｃ Ｌｉｍｉｔｅｄ Ｃｏｍｐａｎｙ 排気ガス処理用酸化触媒
GB2513364B (en) 2013-04-24 2019-06-19 Johnson Matthey Plc Positive ignition engine and exhaust system comprising catalysed zone-coated filter substrate
JP6664961B2 (ja) 2012-10-19 2020-03-13 ビーエーエスエフ コーポレーション 高温ｓｃｒ触媒としての８員環小孔分子ふるい
JP6469578B2 (ja) * 2012-10-19 2019-02-13 ビーエーエスエフ コーポレーション 混合金属８員環小孔分子ふるい触媒組成物、触媒製品、システム及び方法
CN105188919B (zh) * 2013-03-12 2018-11-06 巴斯夫公司 用于no氧化的催化剂材料
GB2514177A (en) 2013-05-17 2014-11-19 Johnson Matthey Plc Oxidation catalyst for a compression ignition engine
RU2629762C2 (ru) * 2013-05-31 2017-09-01 Джонсон Мэтти Паблик Лимитед Компани Каталитический фильтр для обработки отработавшего газа
CN105688980A (zh) 2016-03-10 2016-06-22 镇江翰宏新材料科技有限公司 一种分子筛负载scr催化剂的制备方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101848764A (zh) * 2007-11-08 2010-09-29 日产自动车株式会社 贵金属负载粉末的制造方法、贵金属负载粉末以及废气净化用催化剂
US20160193594A1 (en) * 2009-02-26 2016-07-07 Johnson Matthey Public Limited Company Filter for filtering particulate matter from exhaust gas emitted from a compression ignition engine
US20110305614A1 (en) * 2010-04-08 2011-12-15 Basf Corporation Cu-CHA/Fe-MFI Mixed Zeolite Catalyst And Process For The Treatment Of NOx In Gas Streams
US20140044630A1 (en) * 2011-06-21 2014-02-13 Johnson Matthey Public Limited Company Catalyzed substrate and exhaust system for internal combustion engine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
AGRAFIOTIS, C., TSETSEKOU, A. & EKONOMAKOU, A.: "The effect of particle size on the adhesion properties of oxide washcoats on cordierite honeycombs", 《 JOURNAL OF MATERIALS SCIENCE LETTERS》 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107735161A (zh) * 2015-03-03 2018-02-23 巴斯夫公司 NOx吸附剂催化剂、方法和系统
CN113453787A (zh) * 2019-03-29 2021-09-28 庄信万丰股份有限公司 催化剂制品及其用于过滤细小颗粒的用途
CN113453787B (zh) * 2019-03-29 2023-11-07 庄信万丰股份有限公司 催化剂制品及其用于过滤细小颗粒的用途

Also Published As

Publication number Publication date
RU2019104306A (ru) 2020-08-24
GB2554517B (en) 2021-02-03
KR102515969B1 (ko) 2023-04-03
GB2554517A (en) 2018-04-04
EP3487604A1 (en) 2019-05-29
KR20190036543A (ko) 2019-04-04
US20180021768A1 (en) 2018-01-25
DE102017116461A1 (de) 2018-01-25
US10744496B2 (en) 2020-08-18
BR112019000978A2 (pt) 2019-05-14
BR112019000978B1 (pt) 2023-02-23
JP7378295B2 (ja) 2023-11-13
GB201711730D0 (en) 2017-09-06
RU2019104306A3 (zh) 2020-08-27
JP2019529067A (ja) 2019-10-17
WO2018015930A1 (en) 2018-01-25

Similar Documents

Publication Publication Date Title
CN109475804A (zh) 用于过滤器基质的废气催化剂和催化剂粘合剂
US9849421B2 (en) Catalytic filter having a soot catalyst and an SCR catalyst
JP6119057B2 (ja) 二元機能触媒フィルター
CN102939445B (zh) 具有汽油微粒过滤器的汽油发动机排放物处理系统
KR102037224B1 (ko) 배기 가스를 처리하기 위한 촉매화된 필터
CN105247179B (zh) 用于处理废气的经催化的过滤器
CN103974759B (zh) 催化基底整料
JP2019069437A (ja) 触媒ウォッシュコートを備えたウォールフロー型フィルタ
JP2018187629A (ja) バナジン酸塩を含む選択的触媒還元ウォールフロー型フィルター
JP2016527427A (ja) 排ガスを処理するための触媒化フィルタ
EP3194053A1 (en) Exhaust system with a modified lean noxtrap
JP2022017270A (ja) ＮＯｘアドソーバ触媒
WO2020196628A1 (ja) ディーゼル用選択的還元触媒及びディーゼル排ガス浄化装置
CN113226546A (zh) 催化活性过滤器基底、其制备方法及其用途
RU2775221C2 (ru) Катализатор выхлопного газа и связующие катализатора для носителей фильтров
CN118462358A (zh) 通过使用具有不同钒含量的载体涂料增强钒基SCR催化剂的DeNOx SCR性能

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination