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1. WO2020092112 - METHOD OF MAKING SSZ-13 ZEOLITES WITH HIGH ACIDITY AND LOW SILICA TO ALUMINA RATIO (SAR)

Publication Number WO/2020/092112
Publication Date 07.05.2020
International Application No. PCT/US2019/057804
International Filing Date 24.10.2019
IPC
C01B 39/48 2006.01
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF
39Compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites; Their preparation; After-treatment, e.g. ion-exchange or dealumination
02Crystalline aluminosilicate zeolites; Isomorphous compounds thereof; Direct preparation thereof; Preparation thereof starting from a reaction mixture containing a crystalline zeolite of another type, or from preformed reactants; After-treatment thereof
46Other types characterised by their X-ray diffraction pattern and their defined composition
48using at least one organic template directing agent
B01D 53/94 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation 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 or aerosols
34Chemical or biological purification of waste gases
92of engine exhaust gases
94by catalytic processes
B01J 29/76 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
29Catalysts comprising molecular sieves
04having base-exchange properties, e.g. crystalline zeolites, pillared clays
06Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
70of types characterised by their specific structure not provided for in groups B01J29/08-B01J29/65130
72containing iron group metals, noble metals or copper
76Iron group metals or copper
CPC
B01D 2258/01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2258Sources of waste gases
01Engine exhaust gases
B01D 2258/012
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2258Sources of waste gases
01Engine exhaust gases
012Diesel engines and lean burn gasoline engines
B01D 2259/124
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2259Type of treatment
12Methods and means for introducing reactants
124Liquid reactants
B01D 53/565
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation 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,
34Chemical or biological purification of waste gases
46Removing components of defined structure
54Nitrogen compounds
56Nitrogen oxides
565by treating the gases with solids
B01D 53/8628
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation 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,
34Chemical or biological purification of waste gases
74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
86Catalytic processes
8621Removing nitrogen compounds
8625Nitrogen oxides
8628Processes characterised by a specific catalyst
B01D 53/90
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation 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,
34Chemical or biological purification of waste gases
74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
86Catalytic processes
90Injecting reactants
Applicants
  • PACIFIC INDUSTRIAL DEVELOPMENT CORPORATION [US]/[US]
Inventors
  • GAO, De
  • LI, Yunkui
  • SHEPARD, David
  • LACHAPELLE, Jeffery
  • WU, Wei
Agents
  • WEISS, Keith, D.
Priority Data
62/751,74829.10.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD OF MAKING SSZ-13 ZEOLITES WITH HIGH ACIDITY AND LOW SILICA TO ALUMINA RATIO (SAR)
(FR) PROCÉDÉ DE PRODUCTION DE ZÉOLITES SSZ-13 PRÉSENTANT UN TAUX D'ACIDITÉ ÉLEVÉ ET UN FAIBLE RAPPORT SILICE/ALUMINE (SAR)
Abstract
(EN)
A method of forming an SSZ-13 zeolite in a hydrothermal synthesis yields an SSZ-13 zeolite that exhibits a silica to alumina (SiO2Al2O3) molar ratio (SAR) that is less than 16:1; has a morphology that includes one or more of cubic, spheroidal, or rhombic particles with a crystal size that is in the range of about 0.1 micrometer (μm) to 10 μm. This SSZ-13 also exhibits a Brönsted acidity that is in the range of 2.0 mmol/g to 3.4 mmol/g as measured by ammonia temperature programmed desorption. A catalyst formed by substituting a metal into the framework of the zeolite provides for low temperature light-off of the NOx conversion reactions, while maintaining substantial performance at higher temperatures demonstrating hydrothermal stability.
(FR)
Selon l'invention, un procédé de formation d'une zéolite SSZ-13 dans une synthèse hydrothermale produit une zéolite SSZ-13 présentant un rapport molaire (SAR) silice/alumine (SiO2Al2O3) inférieur à 16:1; présente une morphologie comprenant une ou plusieurs particules cubiques, sphéroïdales ou rhombiques dont la taille des cristaux se situe dans la plage comprise entre environ 0,1 micromètre (µm) et 10 µm. Cette SSZ-13 présente également une acidité de Brönsted qui se situe dans la plage comprise entre 2,0 mmol/g et 3,4 mmol/g, telle que mesurée par désorption programmée à la température de l'ammoniac. Un catalyseur formé par substitution d'un métal dans le cadre de la zéolite permet une extinction à basse température des réactions de conversion de NOx, tout en maintenant une performance substantielle à des températures plus élevées, démontrant ainsi une stabilité hydrothermique.
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