WO2000027751A1 - Salt-templated microporous solids - Google Patents
Salt-templated microporous solids Download PDFInfo
- Publication number
- WO2000027751A1 WO2000027751A1 PCT/US1999/026733 US9926733W WO0027751A1 WO 2000027751 A1 WO2000027751 A1 WO 2000027751A1 US 9926733 W US9926733 W US 9926733W WO 0027751 A1 WO0027751 A1 WO 0027751A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- solid
- salt
- microporous
- present
- composition
- Prior art date
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
- B01J29/00—Catalysts comprising molecular sieves
- B01J29/82—Phosphates
- B01J29/84—Aluminophosphates containing other elements, e.g. metals, boron
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B37/00—Compounds having molecular sieve properties but not having base-exchange properties
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B37/00—Compounds having molecular sieve properties but not having base-exchange properties
- C01B37/002—Metallophosphates not containing aluminium, e.g. gallophosphates or silicogallophosphates
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B39/00—Compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites; Their preparation; After-treatment, e.g. ion-exchange or dealumination
- C01B39/02—Crystalline 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
- C01B39/06—Preparation of isomorphous zeolites characterised by measures to replace the aluminium or silicon atoms in the lattice framework by atoms of other elements, i.e. by direct or secondary synthesis
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B39/00—Compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites; Their preparation; After-treatment, e.g. ion-exchange or dealumination
- C01B39/02—Crystalline 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
- C01B39/06—Preparation of isomorphous zeolites characterised by measures to replace the aluminium or silicon atoms in the lattice framework by atoms of other elements, i.e. by direct or secondary synthesis
- C01B39/08—Preparation of isomorphous zeolites characterised by measures to replace the aluminium or silicon atoms in the lattice framework by atoms of other elements, i.e. by direct or secondary synthesis the aluminium atoms being wholly replaced
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B39/00—Compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites; Their preparation; After-treatment, e.g. ion-exchange or dealumination
- C01B39/02—Crystalline 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
- C01B39/06—Preparation of isomorphous zeolites characterised by measures to replace the aluminium or silicon atoms in the lattice framework by atoms of other elements, i.e. by direct or secondary synthesis
- C01B39/10—Preparation of isomorphous zeolites characterised by measures to replace the aluminium or silicon atoms in the lattice framework by atoms of other elements, i.e. by direct or secondary synthesis the replacing atoms being at least phosphorus atoms
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B39/00—Compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites; Their preparation; After-treatment, e.g. ion-exchange or dealumination
- C01B39/50—Zeolites wherein inorganic bases or salts occlude channels in the lattice framework, e.g. sodalite, cancrinite, nosean, hauynite
Definitions
- the present invention is generally directed to a novel microporous solid that can be effectively used in catalytic applications, such as in automotive exhaust treatment. More particularly, the present invention is directed to a microporous composition that is constructed by employing a salt template which can be readily removed without destroying the framework of the micropore. Further, depending upon the templating salt used and the concentration of the salt, various microporous solids can be formed having different geometric structures. Background of the Invention
- Microporous solids have been explored as one possible material for such catalytic applications (also useful in other related applications, such as sorbent and molecular sieves applications) .
- Microporous solids comprise a beautiful class of materials with most of their interesting properties resulting from the fact that the frameworks facilitate a structurally confined space on the order of small molecules. These spaces consist of micropore structures that can be used as a microreactor allowing for selective and controlled chemical processes.
- Zeolites and zeolite-type materials are well known for their practical importance in industrial processes, such as gas separation, catalysis, and shape-selective synthesis.
- the naturally occurring and synthetic microporous solids including aluminosilicates , aluminophosphates, substituted alumino-phosphates, and zinco- (or beryllo-) phosphates or arsenates, are closed-shell, diamagnetic solids.
- Significant progress in the synthesis of transition-metal-containing zeolite analogues has recently occurred, mainly because of the potential importance of these materials in industrial catalysis.
- the templating agents used cannot be readily removed from the structure by heating without destroying the framework of micropores .
- the framework may collapse as the templating molecule is removed. As such, the effectiveness of such materials in novel applications is thereby diminished.
- the present invention is directed to the design, synthesis, evaluation, and modeling of new and improved catalytic materials that will better meet the needs of tomorrow's environmental and biochemical industries.
- the invention encompasses salt-templated microporous phosphate, arsenate, germanate and silcate analogs of zeolites. These newly discovered microporous solids exhibit superior structural, chemical, and physical properties compared to existing zeolite-based catalysts.
- the active sites and structures necessary for redox catalysis, for example, are included as part of the framework to facilitate easy separation and efficient recycling during the catalytic process.
- Microporous solids made according to the present invention can, in one embodiment, have a general composition as follows:
- A alkali and alkaline-earth metals
- M di-and trivalent transition metals
- X P, As, Si, Ge and wherein y is greater than or equal to 0 and less than or equal to 1.
- Single-crystal structural studies show that these materials exhibit microporous frameworks with the pore size in the range of from about 5.3 to about 12.7 angstroms .
- the materials of the present invention allow the space-filling, charge-compensation templates to be removed without destroying the framework of the micropore.
- the materials have a very stable framework, which can endure extensive heating up to 650°C.
- the materials possess very attractive chemical properties in that ion-exchange and insertion (intercalation) reactions can readily take place at room temperature.
- Figure 1 is a top perspective view of one embodiment of a microporous composition made in accordance with the present invention.
- Figure 2 is a top perspective view of another embodiment of a microporous composition made in accordance with the present invention.
- Figure 3 is a top perspective view of another embodiment of a microporous composition made in accordance with the present invention.
- Figure 4 is a top perspective view of another embodiment of a microporous composition made in accordance with the present invention.
- Figure 5 is a top perspective view of another embodiment of a microporous composition made in accordance with the present invention.
- Figure 6 is a top perspective view of another embodiment of a microporous composition made in accordance with the present invention.
- Figures 7 (A) - 7 (D) are SEM images of microporous solids made in accordance with the present invention.
- Figure 8 is a "ball-and-stick" drawing of the structure of one embodiment of a templating salt composition of the present invention.
- Figure 9 are powder X-ray diffraction patterns for a "CuPO" embodiment of the present invention including a pattern for (a) the embodiment, (b) the embodiment treated with water, (c) the embodiment treated with KCl, and (d) the embodiment re- intercalated with KCl/CsCl after being treated with water
- Figure 10 are TGA curves for a "CuPO" embodiment of the present invention, including (a) a TGA curve for the embodiment, (b) a TGA curve for the embodiment treated with water, (c) a TGA curve for the embodiment treated with KCl, and (d) a TGA curve for the embodiment re-intercalated with KCl/CsCl.
- the present invention is directed to the design, synthesis, evaluation, and modeling of new and improved catalytic materials that will better meet the needs of modern chemical and biochemical industries .
- the present invention is directed to newly synthesized microporous solids that exhibit superior structural, chemical, and physical properties compared to existing zeolite-based catalysts.
- the present invention is directed to salt-templated microporous phosphate, arsenate, germanate and silicate analogues of zeolites.
- a microporous structure of the present invention includes a novel framework that contains redox centers, such as di- or trivalent transition metal cations distributed uniformly in the wall of the pores.
- M transition metals
- X P, As, Si, or Ge
- oxygen oxygen
- salt- templates can be effectively utilized in conjunction with the framework to synthesize unique microporous structures having novel structural, chemical, and thermal properties.
- open framework structures of the present invention can be formed at relatively high temperatures with appropriate "templating" salts.
- halide salts are routinely employed in the present invention as a flux for crystal growth of transition-metal-containing phosphates, arsenates, germanates and silicates that otherwise only form polycrystalline phases.
- a relatively high temperature i.e. above about 600°C, at which the salt becomes molten, covalent lattices containing channel and layer structures can form.
- the incorporated salt behaves like a template that directs the formation of the oxide framework.
- a spiral [CuP0 4 ] ⁇ framework is built around [BaCl] + cations in a non-centrosymmetric lattice of copper (II) phosphate.
- the framework of a microporous composition of the present invention is generally composed of alternating M and X atoms that are interlinked by commonly shared oxygen atoms.
- the transition metal cations (M) adopt a [4+2] distorted octahedral coordination with four oxide anions in an otherwise square planner geometry and two halide anions from the salt lattice occupying the apical positions .
- compositions can be utilized to form microporous structures of the present invention.
- microporous compositions are represented by the following general formulas : (I) (salt) a -A n+ b [ (M p+ 0 2 ) c (X q A 4 ) m"
- microporous composition can be represented by the following formula:
- M transition metals (typically di- and trivalent)
- X comprise P, As, Si and/or Ge and wherein y is greater than or equal to 0 and less than or equal to 1.
- alkali metals of the present microporous composition are preferably Li, Na, K, RB, and/or Cs .
- Alkaline-earth metals that may be used include Be, Mg, Ca, Sr and/or Ba .
- transition metals of the present microporous composition are preferably Mn and/or Cu.
- the template salt that may be used to produce microporous solids in accordance with the present invention can vary depending upon the application and the desired result. In general, any alkali or alkaline earth metal and halide salt may be used.
- Metals that may be combined with the halides include barium, cesium, rubidium, potassium, sodium, lithium, beryllium, magnesium, calcium and strontium.
- MnPO (CsCl) -Na 2 Mn 3 (P 2 0 7 ) 2 (hereinafter referred to as "MnPO" and illustrated in Figure 1)
- CuPO Cu 3 (Cs 3 Cl 3 ) -Na 2 Cu 3 (P 2 0 7 ) 2 (hereinafter referred to as "CuPO" and illustrated in
- a microporous composition of the present invention is preferably doped with a suitable material.
- the "CuPO" embodiment can be doped with Mn such that "M” in the above equation includes mixed Mn/Cu as shown in Figure 3.
- dopants can aid in "fine tuning" the catalytic properties of the composition so as to make a designer's catalyst for multifunctional catalysis.
- microporous compositions of the present invention can prove beneficial in a variety of catalytic applications.
- a microporous composition of the present invention can be particularly useful in automotive exhaust treatment for pollution abatement, such as in deNOx catalysis.
- microporous compositions of the present invention can be utilized in various other applications as well .
- the characteristics of the preferred compositions will now be further discussed.
- the description of the preferred embodiments, and in particular the "CuPO" embodiment is the primary focus of further discussion, it should be understood that such discussion is by way of example only, and is not in any manner intended to limit the present invention to the particular embodiments discussed.
- each M-site also contains two additional Cl atoms that occupy axial positions.
- the overall framework of microporous compositions of the present invention is structured such that the wall of the framework is negatively charged.
- the overall framework of the "CuMnO" and “CuPO" embodiments of the present invention are made from alternating M0 4 and P 2 0 7 units that share vertex oxygen atoms, thus giving rise to a negatively charged wall of M 3 (P 2 0 7 ) 2 A
- the negatively charged framework wall about 50% or more of the cation sites in the framework are decorated by Cu 2+ cations in the embodiments illustrated in Figures 2 and 3.
- the framework of the microporous compositions is also structured in a manner such that the framework forms pores or channels that enable the composition to be robust and facilitate a wide range of catalytic activities.
- Such pores or channels can typically vary in size.
- the composition can contain more than one pore or channel having different sizes.
- the "MnPO" composition can contain single-size, rectangular pores with a 5.3A x 5.9A window.
- the "CuPO” and “CuAsO" compositions can contain, for example, two differently sized pores of 5.3A and 12.7A in diameter.
- the smaller channel of the "CuPO" embodiment of the present invention is fully occupied by a salt, while the larger channel is only partially occupied.
- the smaller channel of the "CuPO" composition doped with Mn is fully occupied by CsCl, while the larger channel is partially occupied with mixed KCl and CsCl salts present in nonstoichiometric proportions.
- the partial occupation of the salt in the larger channel indicates that a significantly large percentage of Cu 2+ cations (>33%) have vacant apical positions which provide accessibility for redox reaction.
- the smaller and larger channels of the doped "CuPO" embodiment of the present invention can be centered by certain salts located therein.
- the smaller channel can be centered by a linear "chain" of alternating Cs- --C1 Cs, while the larger channel can be centered by pure Cs Cs Cs .
- the newly discovered compositions also possess anchored cation sites.
- the "CuPO" composition includes anchored Cu 2 * cation sites.
- Such anchored sites can facilitate easy separation and efficient recycling during the heterogeneous catalytic process.
- a salt template of the present invention can be readily removed and subsequently reinserted at room temperature allowing for chemical modification and, in turn, maximization of deNOx catalytic activity.
- a microporous composition of the present invention also includes a salt-template lattice.
- one embodiment of the present invention includes a salt- template lattice that resides in the large channel of a "CuPO" composition doped with Mn.
- An extended lattice is depicted in Figure 8, that contains two concentric columns of square antiprismatic halide anions (e.g. Cl- anions) and alkali cations (e.g. mixed K+/Cs+ cations) for the inner and outer spheres, respectively centered by an array of monovalent cations (e.g. Cs+ cations).
- the removal of the salt template from the framework can be facilitated by the structure of the lattice described above.
- the relatively long copper-to- halogen bond in one embodiment, can aid in the salt removal process because of the weakness of the longer bond.
- the Cs+ cations that reside in the center of the larger channel are bonded to eight Cl- anions that make up the inner sphere column.
- eight bonds two long distances (i.e. 4.24 A) and six short distances (i.e. 3.51-3.53A) are present.
- the outer sphere column includes mixed K+/Cs+ cations that give reasonable bond distances to the inner sphere Cl- anions (i.e. 2.76-3.76A), while the average bond distance of the o cations to the CsCl structure is 3.36A.
- the K+/Cs+ cations of the outer sphere are bonded to the oxygen atoms of the "CuPO" framework, while the Cl- anions of the inner sphere are bonded to the Cu cations of the "CuPO" framework.
- the salt template can be removed without disrupting the framework.
- the salt template can be conveniently removed at room temperature by water and/or ion-exchange.
- the composition can be treated in a manner such that a small portion of the salt still remains within the composition after being washed.
- an aqueous salt solution can be used in order to remove a portion of the salt template. By controlling the concentration of salt in the solution, the amount of the salt template that is removed from the microporous solid can also be controlled.
- the catalytic reactions of gases flowing therein can often be enhanced.
- the gases can have a longer residence time in the structure, thus allowing more reaction time.
- a composition of the present invention can possess other qualities that prove beneficial in applications other than deNOx catalysis, such as in removing contaminants from strongly alkaline solution, immobilizing halide salt radioactive waste, etc.
- a composition of the present invention after having a salt template removed by water, can be re-intercalated with other salts, such as halides or nitrates, to replenish the catalytic properties of the composition.
- Particular salts well suited for this purpose are chlorides and nitrate salts of alkali or alkaline earth metals.
- Figure 9 illustrates various powder X-ray diffraction curves
- Figure 10 illustrates the thermal stability, determined by thermogravimetric analysis (TGA) , of the "CuPO" embodiment.
- TGA thermogravimetric analysis
- the polycrystalline samples that were analyzed by powder X-ray diffraction were collected at room temperature on a Philips PW1840 diffractometer with Cu-K alpha radiation (wavelength 1.5418 angstroms) and a nickel filter. NIST silicon powder was used as an internal standard.
- the gravimetric thermal analysis experiments that are reflected in Figure 10, on the other hand, were carried out using a DuPont 9900 Thermal Analysis System.
- the thermal decomposition temperature of the original "CuPO" composition is about 650°C.
- the H 2 0-treated composition readily loses its water molecules when heated.
- curves (c) and (d) of Figure 10 it can be seen that a composition having re- intercalated salts displays a restored thermal stability.
- the heat-treated composition can be effectively re-intercalated to regain features similar to the original "CuPO" composition. It should also be noted that further experiments have shown that the porous framework of "CuPO"/H 2 0 can remain intact, even after ten hours heating at 200°C.
- the present invention is also directed to new systems where different combinations of salt, transition metal elements, as well as tetrahedral cations, including silicon, make up novel microporous solids.
- Figure 1 which illustrates "MnPO” and Figures 2 and 3 which illustrate "CuPO”
- Figures 4-6 show further embodiments of microporous solids made in accordance with the present invention.
- many different types of geometric structures can be formed according to the present invention by using different materials to form the microporous solids.
- the geometric structure of the solid can be changed by doping the composition with an additional metal or by using a different templating salt.
- different salts at different concentrations can also be used to form different structures .
- the single crystals of new materials can be readily grown by conventional solid-state methods via halide-flux methods at temperatures approximately 150- 200°C above the melting point of the eutectic salt employed.
- Figures 7 (A) -7(D) are SEM photographs of column-shaped crystals grown in the eutectic flux.
- Figures 7(A) and 7(B) are crystal morphologies of the structure illustrated in Figure 3, while Figures 7(C) and 7(D) are crystal morphologies of the solid containing organic salts.
- the structural analysis also reveals that both di- and trivalent transition metal cations can be incorporated.
- microporous compositions of the present invention can be formed in a number of ways as would be apparent to one skilled in the art.
- one embodiment of the "CuPO" composition doped with Mn can be formed as follows.
- K 212 Cu 224 Mn 076 (P 2 O 7 ) 2 can be grown by employing a CsCl flux.
- the flux to charge ratio can be, for example, about 5:1.
- the materials above can be reacted in a carbon-coated fused silica ampoule.
- the mixture is heated to about 650°C over a 48-hour time period, and then held at that temperature for 24 hours. Thereafter, in one embodiment, the mixture can then be soaked for three days at a temperature of 800°C and slowly cooled over a four-day period to 500°C.
- a stoichiometric powder of an un-doped "CuPO" composition can be prepared by mixing high purity KCl, CsCl, Cs20, CuO, and P 2 0 5 according to the method described above.
- microporous solids as described above, made in accordance with the present invention have a pore size less than 20 angstroms.
- microporous solids having larger pore sizes can also be fabricated.
- systems using organic-based salts can produce large pore size structures.
- salt templates that can be used in this embodiment include alkyl amine salts, especially the halides salts of alkyl amines.
- tetraethylammonium iodide can be used to produce the macroporous materials.
- embodiments of a composition of the present invention can also be properly fine-tuned via chemical modification methods.
- chemical modification methods can maximize the catalytic properties of a composition in a timely manner.
- Some parameters that can be varied include stoichiometry, concentration of dopant, and relative ratio of A/Cl .
- concentration of salt When the concentration of salt is examined, the composition of M-X-0 will be fixed as well as the reaction conditions.
- the mixed- transition-metal cations are studied, likewise, the salt concentration is fixed at the concentration that gives rise to the maximum materials performance.
- the . microporous compositions can also be formed into thin films.
- compositions of the present invention While use of microporous compositions of the present invention in bulk form is of interest for a wide range of catalytic applications, the preparation of these materials in thin film form allows for the development of next- generation sensor and membrane reactor systems. The ability to form such thin films from compositions of the present invention can allow for the application of the compositions in time-release coatings for pharmaceutical uses .
- both powders and films can be prepared from sol-gel solutions.
- powders can be prepared by vacuum drying of the solutions and heat treatment.
- films can be fabricated on non- reactive substrates such as magnesia and sapphire.
- Conventional furnace firing techniques can be used for conversion of the amorphous films into the desired zeolitic structure.
- microporous solids made in accordance with the present invention have many and diverse uses and applications. For example, as described above, the solids can be used as a redox catalyst in order to brake down nitrogen oxides.
- a gas containing nitrogen oxides can be fed through the microporous solids and reduced to molecular nitrogen and molecular oxygen.
- the nitrogen oxides will react with the transition metal, such as copper, contained within the microporous structure.
- the microporous solids can be used for ion exchange in order to treat, for instance, waste water.
- the microporous solids can be used remove heavy metals from water.
- microporous solids include being used as a sorbent to absorb gas molecules or moisture.
- the solids can also be used as molecular sieves and possibly to separate large gas molecules from smaller gas molecules by filtering a gas stream flowing through the solids.
- the residual cesium is believed to correspond to the amount of monovalent cations necessary to balance the negative charge of the Cu-P-0 framework.
- a longer residence time can result for gases that flow through the structure. Such longer residence time can enhance reaction efficiency in some instances.
- EXAMPLE 2 The ability of a polycrystalline microporous solid of the present invention to be re-intercalated with a salt after washing was demonstrated.
- the templating salt of the "CuPO" embodiment was removed by the process of Example 1. Once removed, the solid was re-intercalated with a chloride salt. In particular, the solid was re- intercalated by immersing the solid in a 4 molar potassium chloride salt solution.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU16182/00A AU1618200A (en) | 1998-11-12 | 1999-11-12 | Salt-templated microporous solids |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10803198P | 1998-11-12 | 1998-11-12 | |
US60/108,031 | 1998-11-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000027751A1 true WO2000027751A1 (en) | 2000-05-18 |
Family
ID=22319876
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1999/026733 WO2000027751A1 (en) | 1998-11-12 | 1999-11-12 | Salt-templated microporous solids |
Country Status (2)
Country | Link |
---|---|
AU (1) | AU1618200A (en) |
WO (1) | WO2000027751A1 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4329328A (en) * | 1979-10-19 | 1982-05-11 | National Research Development Corporation | Method of synthesizing zincosilicate or stannosilicate or titanosilicate material |
US5152972A (en) * | 1990-08-31 | 1992-10-06 | E. I. Du Pont De Nemours And Company | Process for producing molecular sieves and novel molecular sieve compositions |
-
1999
- 1999-11-12 AU AU16182/00A patent/AU1618200A/en not_active Abandoned
- 1999-11-12 WO PCT/US1999/026733 patent/WO2000027751A1/en active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4329328A (en) * | 1979-10-19 | 1982-05-11 | National Research Development Corporation | Method of synthesizing zincosilicate or stannosilicate or titanosilicate material |
US5152972A (en) * | 1990-08-31 | 1992-10-06 | E. I. Du Pont De Nemours And Company | Process for producing molecular sieves and novel molecular sieve compositions |
Also Published As
Publication number | Publication date |
---|---|
AU1618200A (en) | 2000-05-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Khaleque et al. | Zeolite synthesis from low-cost materials and environmental applications: A review | |
Cheetham et al. | Open‐framework inorganic materials | |
CN100368290C (en) | Modified layered metallosilicate material and production process thereof | |
JP6835869B2 (en) | Synthesis of molecular sieve SSZ-98 | |
JP2000178022A (en) | Tin(ii) silicate molecular sieve having zeolite beta- structure | |
KR20180023890A (en) | Direct synthesis of CU-CHA by combination of CU complex and tetraethylammonium and its application to catalyst | |
JP6799304B2 (en) | Zeolite production method using a structure inducer containing a benzyl group and zeolite produced from it | |
US7097772B2 (en) | Method of purifying a waste stream using a microporous composition | |
ES2327395T3 (en) | POROUS CRYSTAL MATERIAL (ZEOLITA ITQ-21), THE METHOD OF PREPARATION OF THE SAME AND THE USE OF THE SAME IN THE CATALYTIC CONSERVATION OF ORGANIC COMPOUNDS. | |
JP2015509478A (en) | Preparation of molecular sieve SSZ-23 | |
EP0912240B1 (en) | Zeolite containing cation exchangers, methods for preparation, and use | |
CN111348662B (en) | Ultra-large pore silicate molecular sieve NUD-6 and preparation method thereof | |
KR100525209B1 (en) | Metal-incorporated nanoporous materials, Metal-VSB-5 molecular sieve and their preparation methods | |
CN101279745B (en) | Method for preparing a zeolite having mel structure | |
US5158757A (en) | Synthesis of gallosilicate zeolites having faujasite structure | |
JP2003506301A (en) | Zeolite ITQ-10 | |
KR101902694B1 (en) | Method for preparing transition metal ion-exchanged zeolite | |
WO2000027751A1 (en) | Salt-templated microporous solids | |
JP4176282B2 (en) | Method for producing mesoporous inorganic porous material | |
KR101812598B1 (en) | Manufafcturing method of fau zeolite with mesopore and micropore | |
JP5609620B2 (en) | New metallosilicate | |
ES2364918A1 (en) | Itq-47 material, method for obtaining same and use thereof | |
JP2003073115A (en) | Crystalline microporous alkaline metal silicate compound and its producing method | |
KR20180088360A (en) | Method for synthesizing zeolite using structure directing agent containing benzyl group and zeolite synthesized therefrom | |
KR101644310B1 (en) | Aluminosilicates structure, manufacturing method thereof and use using the same |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ENP | Entry into the national phase |
Ref country code: AU Ref document number: 2000 16182 Kind code of ref document: A Format of ref document f/p: F |
|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AL AM AT AU AZ BA BB BG BR BY CA CH CN CR CU CZ DE DK DM EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT UA UG UZ VN YU ZA ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GH GM KE LS MW SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
REG | Reference to national code |
Ref country code: DE Ref legal event code: 8642 |
|
122 | Ep: pct application non-entry in european phase |