Abstract: A molecular sieve having the framework structure of ZSM-5 is described comprising crystals having an external surface area in excess of 100 m2/g (as determined by the t-plot method for nitrogen physisorption) and a unique X-ray diffraction pattern.
Type:
Grant
Filed:
August 22, 2018
Date of Patent:
May 26, 2020
Assignee:
ExxonMobil Research & Engineering Company
Inventors:
Allen W. Burton, Christine E. Kliewer, Mobae Afeworki
Abstract: Embodiments of the invention generally provide compositions of crystalline zeolite materials with tailored crystal habits and the methods for forming such crystalline zeolite materials. The methods for forming the crystalline zeolite materials include binding one or more zeolite growth modifiers (ZGMs) to the surface of a zeolite crystal, which results in the modification of crystal growth rates along different crystallographic directions, leading to the formation of zeolites having a tailored crystal habit. The improved properties enabled by the tailored crystal habit include a minimized crystal thickness, a shortened internal diffusion pathlength, and a greater step density as compared to a zeolite having the native crystal habit prepared by traditional processes. The tailored crystal habit provides the crystalline zeolite materials with an aspect ratio of about 4 or greater and crystal surfaces having a step density of about 25 steps/?m2 or greater.
Abstract: Disclosed are novel aqueous aluminum complex compositions and methods of making and using them. The novel compositions comprise very low halide content, even when made from aluminum chlorohydrate. The compositions find use in the production of zeolites, coatings, abrasives, binders, and refractories; and in the treatment of wastewater for example. The methods of making the novel compositions include passing a first aqueous aluminum complex composition through an anion exchange column or otherwise contacting the first composition with the anion exchange resin to provide a second aqueous aluminum complex composition that is different from the first aqueous aluminum complex composition. Also disclosed are methods of making zeolites and aqueous silica-alumina compositions from the novel aqueous aluminum complex compositions.
Type:
Grant
Filed:
November 30, 2017
Date of Patent:
May 19, 2020
Assignee:
Ecolab USA Inc.
Inventors:
Wenyong Lin, Francois Batllo, Shiby John, Michael Romba
Abstract: Disclosed are novel, as-crystallized RHO zeolite compositions with improved uniformity in morphology. These RHO compositions are useful for preparing cation-exchanged RHO zeolites that can be used as adsorbents for oxygen and/or nitrogen with improved properties. The adsorbents can be used in pressure swing adsorption processes for selectively adsorbing oxygen and/or nitrogen from feed streams such as an air stream or crude argon stream. Also disclosed are novel methods of preparing RHO zeolites with improved morphology control.
Type:
Grant
Filed:
September 28, 2018
Date of Patent:
May 19, 2020
Assignee:
Air Products and Chemicals, Inc.
Inventors:
Elizabeth M. Seibel, William Jack Casteel, Jr., Garret Chi-Ho Lau, Roger Dean Whitley
Abstract: Some embodiments are directed to a method for the preparation of defect-free nanosized synthetic zeolite materials, to the defect-free nanosized synthetic zeolite materials, to stable colloidal suspensions of the defect-free synthetic zeolite materials, and to the use of the defect-free nanosized synthetic zeolite materials and the stable colloidal suspensions in various applications.
Type:
Grant
Filed:
October 22, 2015
Date of Patent:
May 12, 2020
Assignees:
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, ÉCOLE NATIONALE SUPÉRIEURE D'INGÉNIEURS DE CAEN, UNIVERSITÉ DE CAEN / UNIVERSITÉ DE BASSE-NORMANDIE
Abstract: The present invention provides a new method for preparing the copper-containing silicoaluminate form of the AEI zeolite structure by means of a direct synthesis methodology. This new process involves combining a organometallic copper-complex with an additional organic molecule capable of directing the crystallization of the silicoaluminate form of the AEI zeolite structure as organic structure-directing agents (OSDAs).
Type:
Grant
Filed:
April 14, 2016
Date of Patent:
May 12, 2020
Assignees:
Consejo Superior de Investigaciones Cientificas, Universitat Politècnica de València
Inventors:
Avelino Corma Canós, Manuel Moliner Marín, Nuria Martín García
Abstract: The present invention provides an amphiphilic molecular sieve containing a lipophilic group on the outside and a hydrophilic group on the inside and a production method thereof. The production method comprises: dispersing the nano-ZSM-5 molecular sieve into toluene, adding an organosilane containing a lipophilic group and reacting at 60-100° C. for 4-16 h, to obtain a molecular sieve containing a lipophilic group; placing the molecular sieve containing a lipophilic group in a mixed solution of sodium hydroxide solution and ethanol and reacting at 60-95° C. for 20-60 min, to obtain a molecular sieve containing a lipophilic group on the outside; dispersing the molecular sieve containing a lipophilic group on the outside into toluene, adding an organosilane containing a hydrophilic group and reacting at 60-100° C. for 4-16 h, to obtain the amphiphilic molecular sieve containing a lipophilic group on the outside and a hydrophilic group on the inside.
Abstract: A method is provided for synthesizing aluminum-rich molecular sieves of *MRE framework type via interzeolite transformation of a FAU framework type zeolite in the presence of hexamethonium cations.
Abstract: A new aluminosilicate zeolite designated UZM-50, methods of making the zeolite, and its use as a catalyst in hydrocarbon conversion processes are described. This zeolite is represented by the empirical formula: M+mRrAl1-xExSiyOz where M is selected from the group consisting of hydrogen, sodium, potassium, magnesium, calcium or combinations thereof, R is the organic structure directing agent or agents derived from reactants R1 and R2 where R1 is an amine essentially incapable of undergoing pyramidal inversion and having 7 or fewer carbon atoms, and R2 is a dihaloalkane, and E is an element selected from the group consisting of gallium, iron, boron and mixtures thereof. UZM-50 has utility in various hydrocarbon conversion reactions such as conversion of an aromatic molecule to another aromatic molecule.
Type:
Grant
Filed:
December 28, 2017
Date of Patent:
April 28, 2020
Inventors:
Mark A. Miller, Christopher P. Nicholas, Melissa M. Galey, Mimoza Sylejmani, John Mowat, Collette Nicholas
Abstract: A new crystalline aluminosilicate zeolite comprising a new framework has been synthesized that has been designated UZM-55. This zeolite is represented by the empirical formula: M+mRrAl1-xExSiyOz where M represents a metal or metals selected from zinc or Group 1 (IUPAC 1), Group 2 (IUPAC 2), Group 3 (IUPAC 3) or the lanthanide series of the periodic table including sodium, potassium or a combination of sodium and potassium cations, R is an organic structure directing agent or agents derived from reactants R1 and R2 such as where R1 is diisopropanolamine and R2 is a chelating diamine, and E is an element selected from the group consisting of gallium, iron, boron and mixtures thereof. Catalysts made from UZM-55 have utility in various hydrocarbon conversion reactions. The calcined zeolite is used in hydrocarbon conversion reactions.
Type:
Grant
Filed:
March 28, 2019
Date of Patent:
April 21, 2020
Inventors:
Mark A. Miller, Christopher P. Nicholas, Melissa M. Galey, John P. S. Mowat, Wharton Sinkler
Abstract: Compositions and methods for preparing mesoporous and/or mesostructured materials from low SAR zeolites are provided herewith. In particular, methods are provided that involve: (a) providing a low SAR zeolite, (b) optionally subjecting the low SAR zeolite to an acid framework modification, and (c) subjecting the framework-modified zeolite to a mesopore formation treatment. The resulting mesoporous zeolites can have bi-modal mesoporosity and higher aluminum contents relative to existing mesoporous zeolites.
Abstract: A family of new crystalline molecular sieves designated SSZ-91 is disclosed, as are methods for making SSZ-91 and uses for SSZ-91. Molecular sieve SSZ-91 is structurally similar to sieves falling within the ZSM-48 family of molecular sieves, and is characterized as: (1) having a low degree of faulting, (2) a low aspect ratio that inhibits hydrocracking as compared to conventional ZSM-48 materials having an aspect ratio of greater than 8, and (3) is substantially phase pure.
Type:
Grant
Filed:
August 11, 2016
Date of Patent:
April 14, 2020
Inventors:
Adeola Florence Ojo, Dan Xie, Yihua Zhang, Guan-Dao Lei
Abstract: A new crystalline aluminosilicate zeolite comprising a novel framework has been synthesized that has been designated UZM-55. This zeolite is represented by a three-dimensional framework of at least SiO2 tetrahedral units and an empirical composition in the as-synthesized and anhydrous basis expressed by an empirical formula of: Mmn+RrAlxEySiOz where M represents a metal or metals from zinc or Group 1 (IUPAC 1), Group 2 (IUPAC 2), Group 3 (IUPAC 3) or the lanthanide series of the periodic table, R is a structure directing agent or agents such as 1,6-bis(N-methylpiperidinium)hexane, and E is an element selected from the group consisting of gallium, iron, boron and mixtures thereof. Catalysts made from UZM-55 have utility in various hydrocarbon conversion reactions including methanol to hydrocarbons (MTH).
Type:
Grant
Filed:
July 25, 2017
Date of Patent:
April 7, 2020
Inventors:
John P. S. Mowat, Wharton Sinkler, Christopher P. Nicholas, Mark A. Miller, Melissa M. Galey
Abstract: A molecular sieve of *MRE framework can be synthesized using one or more of (2-hydroxyethyl)trimethylammonium cations, (2-hydroxpropyl)trimethylammonium cations, propyltrimethylammonium cations, and benzyltrimethylammonium cations as a structure directing agent.
Abstract: A method is provided for synthesizing molecular sieves of ITE framework type using one or more of 1-ethyl-1,3,5-trimethylpiperidinium cations and 1-ethyl-1-methyldecahydroquinolinium cations a structure directing agent.
Abstract: A novel synthetic crystalline material, EMM-28, can be synthesized in the presence of an organic structure directing agent (Q) selected from one or more of the following dications: EMM-28 may be used in organic compound conversion reactions and sorptive processes.
Type:
Grant
Filed:
February 18, 2019
Date of Patent:
March 24, 2020
Assignee:
EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
Inventors:
Kirk D. Schmitt, Hilda B. Vroman, Allen W. Burton, Michael A. Marella, Ross Mabon, Simon C. Weston
Abstract: A method is provided for synthesizing a molecular sieve having the framework structure of SSZ-63 using di(cyclopentylmethyl)dimethylammonium cations as a structure directing agent.
Abstract: An aluminosilicate molecular sieve of STW framework type, designated herein as SSZ-110, and having a molar ratio of SiO2/Al2O3 of less than 100, is provided. SSZ-110 may be synthesized using an organic structure directing agent selected from one or more of 1,4-bis(2,3-dimethyl-1H-imidazolium)butane dications, 1,5-bis(2,3-dimethyl-1H-imidazolium)pentane dications, and 1,6-bis(2,3-dimethyl-1H-imidazolium)hexane dications. SSZ-110 may be used in organic compound conversion reactions and sorptive processes.
Type:
Grant
Filed:
January 21, 2019
Date of Patent:
March 17, 2020
Assignee:
CHEVRON U.S.A. INC.
Inventors:
Stacey Ian Zones, Tracy Margaret Davis, Dan Xie, Cong-Yan Chen, Howard Steven Lacheen
Abstract: A method is provided for synthesizing a molecular sieve having the framework structure of SSZ-109 using N1,N6-diisopropyl-N1,N1,N6,N6-tetramethylhexane-1,6-diaminium cations as a structure directing agent.