| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 423713000 | Isomorphic metal substitution | 25 |
| 20090068093 | BIMETALLIC CATALYST FOR NOX REDUCTION IN ENGINE EXHAUST - A catalyst made by the introduction of copper ions and cobalt ions into a Y-type zeolite to produce a CuCoY zeolite improves the reduction of NOx in exhaust from a lean bum engine, such as a diesel engine. A dual bed selective reduction reactor in the exhaust stream comprising a first bed of BaY or of Ag/alumina and a second bed of CuCoY is particularly effective in reduction of NOx. In one embodiment, the exhaust stream is suitably treated with an oxidant, such as ozone, and a reductant, such as a diesel hydrocarbon or oxygenated diesel hydrocarbon, before the exhaust passes in contact with the dual bed catalyst. | 03-12-2009 |
| 20090274617 | Adsorbent - An absorbent of ZSM-5 zeolite ion-exchanged with copper ion, characterized in that at least 60% or more of the copper sites in the copper ion-exchanged ZSM-5 zeolite are copper (I) sites and preferably at least 70% or more of the copper (I) sites are three-oxygen-coordinated copper (I) sites. | 11-05-2009 |
| 20100047161 | FORMULATION AND METHOD FOR IMPROVED ION EXCHANGE IN ZEOLITES AND RELATED ALUMINOSILICATES USING POLYMER SOLUTIONS - Among other things, this disclosure provides a method for exchanging cations in an aluminosilicate. The method includes combining, in an exchange solvent and under ion exchange conditions, an ion-exchangeable aluminosilicate having a first cation associated therewith as a counter ion and a second cation source, to provide a mixture that includes the ion-exchanged aluminosilicate which includes the second cation associated therewith as a counter ion. Suitable exchange solvents include polyalkylene oxide glycols, polyalkylene oxide glycol monoethers, polyalkylene oxide glycol diethers, or any combination thereof. | 02-25-2010 |
| 20100172828 | Metal Doped Zeolite and Process for its Preparation - The present invention relates to a metal-doped or metal-exchanged zeolite, respectively, wherein the doping metal is present in the zeolite in the form of individual atoms i.e. as monomeric and/or dimeric species. The invention further relates to a process for the preparation of such a metal-exchanged zeolite. Said metal-doped zeolites are useful, in particular, for the reduction of nitrogen oxides. | 07-08-2010 |
| 20100196263 | INTRODUCTION OF MESOPOROSITY IN LOW Si/Al ZEOLITES - Compositions and methods for preparing mesoporous materials from low Si/Al ratio zeolites. Such compositions can be prepared by acid wash and/or isomorphic substitution pretreatment of low Si/Al ratio zeolites prior to introduction of mesoporosity. | 08-05-2010 |
| 20110200523 | ANTIMICROBIAL ZEOLITE AND ANTIMICROBIAL RESIN COMPOSITION - The present invention herein provides antimicrobial zeolite which hardly causes any color change with the elapse of time even when it is incorporated into a resin to form an antimicrobial resin composition. The present invention thus relates to antimicrobial zeolite which comprises zeolite whose ion-exchangeable ions are partially or wholly replaced with hydrogen ions and silver ions; and an antimicrobial resin composition which comprises the foregoing antimicrobial zeolite in an amount ranging from 0.05 to 80% by mass. | 08-18-2011 |
| 20130115164 | PHOSPHORUS MODIFIED CRACKING CATALYSTS WITH ENHANCED ACTIVITY AND HYDROTHERMAL STABILITY - A phosphorus modification of an FCC catalyst is provided by reducing the sodium content of the as formed catalyst, a first treatment with a phosphate solution, a second ammonium exchange to further reduce the sodium content of the phosphorus solution treated catalyst and a second treatment with a phosphate solution. | 05-09-2013 |
| 20130129612 | Process for Ion Exchange on Zeolites - Aspects of the present invention relate to an improved process for exchanging alkali metal or alkaline earth metal ions in zeolites for ammonium ions. For this exchange, aqueous solutions of ammonium salts, for example ammonium sulfate, ammonium nitrate or ammonium chloride, are currently being used. The resulting “ammonium zeolites” are calcined to convert them, with release of ammonia, to the H form of the zeolites suitable as a catalyst. Certain methods provided herein use ammonium carbonate instead of the ammonium compounds mentioned. As excess ammonium carbonate, in contrast to the nitrates, sulfates or chlorides, can be recycled in the form of carbon dioxide and ammonia, the amount of salt which has to be discharged is lowered significantly. | 05-23-2013 |
| 20130129613 | Process for Ion Exchange on Zeolites - Aspects of the present invention relate to an improved process for exchanging sodium ions in zeolites comprising sodium ions and rare earth metal ions for ammonium ions. For this exchange, aqueous solutions of ammonium salts, for example ammonium sulfate, ammonium nitrate or ammonium chloride, are currently being used. The resulting “ammonium zeolites” are calcined to convert them, with release of ammonia, to the H form of the zeolites suitable as a catalyst. The use of ammonium carbonate also minimizes the amount of rare earth metal ions which are leached out of the zeolites comprising rare earth metal ions. | 05-23-2013 |
| 20140154175 | STABILIZED MICROPOROUS CRYSTALLINE MATERIAL, THE METHOD OF MAKING THE SAME, AND THE USE FOR SELECTIVE CATALYTIC REDUCTION OF NOX - There is disclosed a microporous crystalline material having pore opening ranging from 3 to 5 Angstroms, where the material comprises a first metal chosen from alkali earth group, rare earth group, alkali group, or mixtures thereof, and a second metal chosen from iron, copper or mixtures thereof; and has a molar silica to alumina ratio (SAR) from 3 to 10. The microporous crystalline material disclosed herein may comprise a crystal structure having building units of double-6-rings (d6r) and pore opening of 8-rings as exemplified with framework types defined by the Structure Commission of the International Zeolite Association having structural codes of CHA, LEV, AEI, AFT, AFX, EAB, ERI, KFI, SAT, TSC, and SAV. There is also disclosed a method of selective catalytic reduction of nitrogen oxides in exhaust gas, comprising at least partially contacting the exhaust gases with an article comprising the disclosed microporous crystalline material. | 06-05-2014 |
| 20140241982 | NOVEL ZEOLITIC MATERIALS WITH HETEROATOM SUBSTITUTIONS ON EXTERNAL SURFACE OF LATTICE FRAMEWORK - A zeolite material is provided having non-boron heteroatoms on the external surface of the zeolitic material lattice framework and B heteroatoms, or silanols created from boron hydrolysis, throughout the remainder of the lattice framework. The lattice framework of the zeolite material comprises large pore 12 member ring or larger openings at the external surface of the framework, and 10 member ring or smaller openings beneath the external surface large pore openings. Also provided is a process for preparing the zeolitic material. | 08-28-2014 |
| 20140271452 | Stabilized Metal-Exchanged SAPO Material - Described are catalyst materials and catalytic articles comprising a metal exchanged SAPO material comprising a plurality of substitutional sites consisting essentially of Si(4Al) sites and substantially free of Si(0Al) sites. The materials and catalytic articles are useful in methods and systems to catalyze the reduction of nitrogen oxides in the presence of a reductant. | 09-18-2014 |
| 20140335013 | CATALYTIC DEHYDRATION OF ALCOHOLS USING PHASE PURE, CALCINED SINGLE- AND MULTI-SITE HETEROGENEOUS CATALYSTS - The disclosure describes a new class of isomorphously metal-substituted aluminophosphate materials with high phase purity that are capable of performing selective Brönsted acid catalyzed chemical transformations, such as transforming alcohols to olefins, with high conversions and selectivities using mild conditions. Isomorphous substitutions of functional metal ions for both the aluminum ions and the phosphorous ions were successful in various AlPO structures, along with multiple metal substitutions into a single aluminum site and/or a phosphorous site. This invention can be used towards the catalytic conversion of hydroxylated compounds of linear and/or branched moiety with the possibility of being substituted to their respective hydrocarbon products, preferably light olefins containing 2 to 10 carbon atoms, among other chemistries. | 11-13-2014 |
| 20140356280 | Delamination of Borosilicate Layered Zeolite - Provided is a surfactant-free, single-step synthesis of delaminated aluminosilicate zeolites. The process comprises the step of heating a borosilicate zeolite precursor in a metal salt solution, e.g., an aluminum nitrate solution, zinc nitrate solution or manganese nitrate solution. The delaminated aluminosilicate zeolite product is then recovered from the solution. | 12-04-2014 |
| 20150037247 | STRONTIUM-EXCHANGED CLINOPTILOLITE - [Problem] To provide a strontium ion-exchanged clinoptilolite having excellent nitrogen-absorbing properties; and a method for producing the strontium ion-exchanged clinoptilolite. | 02-05-2015 |
| 20150314278 | METHOD AND APPARATUS FOR PREPARING ZEOLITE - A process for preparing a catalytic cracking catalyst, which process comprises: a molecular sieve is introduced into a gas-phase ultra-stabilization reactor, the molecular sieve is moved without the conveying of carrier gas from a molecular sieve inlet of the gas-phase ultra-stabilization reactor to a molecular sieve outlet of the gas-phase ultra-stabilization reactor, and the molecular sieve is contacted and reacted with a gaseous SiCl | 11-05-2015 |
| 20160059209 | MODIFIED ALKALI METAL NANOTITANATES FOR HYDROGEN SULFIDE ADSORPTION - A hydrogen sulphide adsorbent is formed from an alkali metal nanotitanate having a portion of the alkali metal cations exchanged with metal cations reactive with hydrogen sulphide, and heat treated. A method for producing the adsorbent includes the steps of mixing an alkali metal nanotitanate in powder form into an aqueous metal cation solution to produce a slurry, which is subsequently dehydrated to produce a powder, which is heat treated. A low temperature method for removing hydrogen sulphide from a gaseous mixture involves exposing the gaseous mixture to the aforementioned adsorbent, at a temperature less than 250° C. The adsorbent maintains a high adsorption capacity over a range of activation temperatures and humidity conditions. | 03-03-2016 |
| 20160107153 | MODIFIED ZEOLITE CATALYST AND METHODS FOR PRODUCING AND USING SAME - The invention pertains to a zeolite catalyst, methods of making same, and its use in the catalytic cracking of naphtha for the production of lower molecular weight olefins and alkanes, while minimizing production less desirable products. A zeolite is modified by base leaching and by the addition of a metal cation, thereby lowering the Si/Al | 04-21-2016 |
| 20160375427 | PROCESS FOR MODIFYING THE PHYSICAL AND CHEMICAL PROPERTIES OF FAUJASITE Y-TYPE ZEOLITES - The present invention relates to a process for modifying the physical and chemical properties of Faujasite Y-type zeolites (FAU), mainly used as a base material of catalyst used in the Fluid Catalytic Cracking (FCC) process, for the interest of the oil refining industry, in which the conversion of oil heavy fractions into lighter fractions, with a higher commercial value, is carried out. The process produces a modified Faujasite Y-type zeolite, with lower sodium content, as low as 75%, than that of the starting Faujasite Y-type zeolite. A mesoporous material associated with the modified Faujasite Y-type zeolite has an average pore size ranging from 2 to 100 nm, having a bimodal or multimodal pore size distribution. The proportion of modified Faujasite Y-type zeolite with respect to the meso-porous material associated to the Faujasite Y type Zeolite can be regulated through the process operation conditions. | 12-29-2016 |
| 20180021763 | PREPARATION METHOD FOR METAL-MODIFIED SAPO MOLECULAR SIEVE | 01-25-2018 |
| 20180021764 | STABILIZED METAL-EXCHANGED SAPO MATERIAL | 01-25-2018 |
| 423714000 | Acid treatment | 4 |
| 20140079627 | PROCESS FOR MANUFACTURE OF A ZEOLITE BASED CATALYST FOR THE CONVERSION OF METHANOL TO OLEFINS - The present invention relates to a process for preparing a phosphorus containing zeolite type catalysts based on crystalline aluminosilicates, the catalysts of this process and the use of this catalysts for the conversion of methanol to olefins. | 03-20-2014 |
| 20140322126 | ZEOLITE, MANUFACTURING METHOD OF THE SAME, AND CATALYTIC CRACKING BATALYST OF PARAFFIN - Provided is a beta-type zeolite which has a high catalytic activity and is not easily deactivated. | 10-30-2014 |
| 20140322127 | METAL DOPED ZEOLITE AND PROCESS FOR ITS PREPARATION - A metal-doped or metal-exchanged zeolite is disclosed, wherein the doping metal is present in the zeolite in the form of individual atoms i.e. as monomeric and/or dimeric species. Further, a process for the preparation of such a metal-doped or metal-exchanged zeolite is disclosed. The metal-doped zeolites are useful, in particular, as catalysts for the reduction of nitrogen oxides. | 10-30-2014 |
| 423715000 | Halogen containing acid | 1 |
| 20140072509 | METHODS OF RECOVERING RARE EARTH ELEMENTS - Processes described include reacting a fresh or spent catalyst, or sorbent, with a solution containing an extracting agent (such as an acid or a base). Preferably, the catalyst contains both alumina and a molecular sieve (or a sorbent), and the reaction is performed under relatively mild conditions such that the majority of the base material does not dissolve into the solution. Thus, the catalyst can be re-used, and in certain instances the catalyst performance even improves, with or without re-incorporating certain of the metals back into the catalyst. Additionally, metals contained in the catalyst, such as Na, Mg, Al, P, S, Cl, K, Ca, V, Fe, Ni, Cu, Zn, Sr, Zn Sb, Ba, La, Ce, Pr, Nd, Pb, or their equivalent oxides, can be removed from the catalyst. Some of the metals that are removed are relatively valuable (such as the rare earth elements of La, Ce, Pr and Nd). | 03-13-2014 |
