37results about "Ferrierite aluminosilicate zeolite" patented technology

The present invention relates to a new method for preparing an IZM-8 zeolite of FER framework type, which makes it possible to synthesize an IZM-8 zeolite of FER framework type by converting / transforming a zeolite of FAU framework type under hydrothermal conditions. In particular, said new method makes it possible to synthesize an IZM-8 zeolite of FER framework type, starting from a zeolite of FAU framework type used as a source of silicon and aluminum and a specific organic or structuring molecule comprising a quaternary ammonium function, N-ethyl-N-(3,3,5-trimethylcyclohexyl)pyrrolidinium hydroxide. Said IZM-8 zeolite of FER framework type obtained according to the method of the invention advantageously finds application as a catalyst, adsorbent or separating agent.

Zeolites having a ferrierite framework structure are prepared using one or more of n-propylamine, n-butylamine, isobutylamine and n-amylamine as structure directing agents.

An object is to provide at least any of zeolite-containing shaped bodies that can remove potassium from a dialysis effluent with less dissolution of aluminum compared to the conventional treatment of dialysis effluent using a zeolite, and a method of adsorbing potassium using the shaped bodies.

The invention relates to an iron-containing catalytic material for the selective catalytic reduction of NOx in exhaust gases from internal combustion engines. The catalytic material comprises a zeolitic material comprising SiO2 and X2O3 in its framework structure, where X is a trivalent element, such as aluminum, where the zeolitic material has an FER-type framework structure, where the deconvolved 29Si MAS NMR of the zeolitic material comprises a specific first peak (P1) corresponding to the Q4 (1Al) site and having a maximum in the range of-103.5 ppm to-108.5 ppm, and has a certain minimum integral with respect to three other peaks in the range of-90.0 ppm to-130.0 ppm. The catalytic material also comprises Fe supported on the zeolitic material. The invention further relates to a method for producing a catalytic material, to an exhaust gas treatment system comprising a catalytic material according to the invention, to the use of the exhaust gas treatment system and to a method for treating exhaust gases comprising said catalytic material.

To provide an ammonium ion adsorbent that can remove ammonium ions in a cell culture medium to recycle the culture medium, while greatly reducing an influence on the metal ion composition in the culture medium and eliminating an adverse effect on the cells.SOLUTION: An ammonium ion adsorbent supports Na ions and K ions. A mol ratio of the Na ions and K ions supported on the adsorbent (K / Na value) is 0 or more and 50 or less.SELECTED DRAWING: Figure 3

Provided is at least one of an FER-type zeolite that generates less N2O during nitrogen oxide reduction compared to a typical iron-containing FER-type zeolite and that can be industrially applied, a production method therefor, and a nitrogen oxide-reducing catalyst including the same.

A zeolite having a ferrierite framework structure produced using one or more of n-propylamine, n-butylamine, isobutylamine, and n-pentylamine as a structure directing agent.

This invention relates to the fields of catalysts and polymer material recycling, and discloses a dual-pore composite catalyst, its preparation method, and its application in the direct catalytic cracking of waste plastics to produce low-carbon olefins. The dual-pore composite catalyst comprises a modified ZSM-35 molecular sieve and a short rod-shaped mesoporous molecular sieve. The modified ZSM-35 molecular sieve includes ZSM-35 molecular sieve and boron oxide and metal oxide supported on the ZSM-35 molecular sieve. Based on the total weight of the dual-pore composite catalyst, the content of the modified ZSM-35 molecular sieve is 46-70% by weight, and the content of the short rod-shaped mesoporous molecular sieve is 30-54% by weight. This dual-pore composite catalyst, in the direct cracking of waste plastics to produce low-carbon olefins, not only solves the problem of waste plastic recycling but also increases the production of important chemical raw materials such as low-carbon olefins, representing a new one-step catalytic conversion and utilization pathway for waste plastics.

The present invention relates to a kind of HZSM 35 molecular sieve and preparation method thereof, the HZSM 35 molecular sieve crystal presents lamellar crystalline structure, thickness is less than 50nm, length or width is less than 500nm, and the HZSM 35 molecular sieve has very high B acid amount, and B acid amount is more than 1.0mmol / g.Preparation method comprises the following steps:Step 1, heating at a certain temperature after mixing silicon source, ZSM 35 molecular sieve, water and inorganic base to obtain reaction product;Step 2, crystallizes after silicon source, aluminum source, water, inorganic base, the reaction product obtained in step 1 and template agent mixing, and the crystallized product is washed, dried and roasted to obtain ZSM 35 molecular sieve;Step 3, ammonium exchange is carried out by ZSM 35, then drying, roasting, obtain HZSM 35 molecular sieve.The HZSM 35 molecular sieve obtained using the above method of the present invention has smaller particle size and higher B acid amount, and in catalyzing light olefin skeletal isomerization reaction, shows higher normal olefin conversion rate and isoolefin selectivity.

An organo-template free method for the manufacture of a ferrierite (FER) zeolite and the ferrierite producible by the method. The method comprises (i) forming a reaction gel comprising an aluminium source, sodium and / or potassium hydroxide, and silica sol; and (ii) heating the reaction gel to a temperature and for a duration suitable for the growth of the FER zeolite. The reaction gel does not comprise seed crystals. Moreover the reaction gel does not comprise an organic structure directing agent (OSDA). The ferrierite (FER) zeolite has the following features: a) a SAR of between 11 and 20; b) a BET surface area of between 320 and 380 m2 / g; and c) a micropore volume of between 0.1 and 0.2 cm3 / g.

Zeolite-containing shaped bodies that remove potassium from a dialysis effluent with less dissolution of aluminum compared to the conventional treatment of dialysis effluent using a zeolite, and a method of adsorbing potassium using the shaped bodies.

The present disclosure relates to a template free modified ferrierite zeolite has a Si / Al ratio in the range of 12 to 13. Further, the present disclosure also provides a method of preparation of a modified ferrierite zeolite. The present disclosure also provides a process of conversion of oleic acid to iso-stearic acid by using the modified ferrierite zeolite. The commercial grade oleic acid conversion is about 85% and isostearic acid selectivity is about 86%.

The present invention discloses a mesoporous ZSM-35 molecular sieve and a preparation method thereof. The mesoporous ZSM-35 molecular sieve contains abundant mesoporous channels, and the mesopores are relatively concentratedly distributed, with a most probable pore diameter of 2 to 6 nm and a total specific surface area of ​​400 to 650 m 2 / g, and the mesopore specific surface area is 50-200m 2 / g, and the crystal size is 0.5 to 5 μm. The preparation method mixes an alkali source, a silicon source, an aluminum source, water and a template, performs a crystallization reaction after mixing evenly, and then further separates, washes and dries. The obtained solid phase material is further mixed with a silicon source, an aluminum source, an alkali source and water, mixed evenly and processed, and then separated and dried to obtain a ZSM‑35 molecular sieve. The preparation method of the mesoporous ZSM‑35 molecular sieve can retain the integrity of the ZSM‑35 molecular sieve crystal structure as much as possible while creating mesoporous channels in the molecular sieve crystal.

To provide at least one of an industrially applicable manufacturing method of a manganese sulfate solution, that does not generate jarosite and comprises a step of selectively removing potassium from a sulfuric acid acidic manganese solution; and a manufacturing method of manganese oxide using the manganese sulfate solution.SOLUTION: A manufacturing method of a manganese sulfate solution comprises a step of adsorbing a potassium ion on a zeolite by making a molar ratio of silica to alumina be 6 or more, and bringing the manganese sulfate solution containing the potassium ion into contact with the zeolite containing an oxygen 8-membered ring in a skeletal structure.SELECTED DRAWING: None

A secondary growth procedure described herein is used to prepare finned zeolites. The finned zeolites possess properties that are distinctly unique compared to crystals of similar size lacking fins. The procedure is amenable to a wide range of zeolite crystal structures.

The application relates to a synthesis of Cu-ZSM-35 molecular sieve and a preparation method and application of a bio-jet fuel catalyst prepared by a one-step method of bio-oil, and the Cu-ZSM-35 molecular sieve is synthesized by a two-step crystallization method: (1) a mixed solution of sodium metaaluminate, a structure directing agent SDA and deionized water is added into a sodium hydroxide solution to obtain solution A; (2) silica sol is added into a sodium hydroxide solution and is fully mixed to obtain solution B; (3) the A and B solutions are mixed, and seeds are added to obtain a synthesis gel, and the synthesis gel is hydrothermally crystallized in a reaction kettle; (4) a mixed solution of a copper-ammonia complex and a structure directing agent SDA is added, and crystallization is carried out under microwave conditions to obtain the Cu-ZSM-35 molecular sieve with high skeleton active component content, uniform distribution and good crystallization, the Cu doping amount is 2-5 wt%, and the Cu-ZSM-35 catalyst is prepared through steps of molding, alkali treatment and the like. The catalyst prepared by the scheme has excellent one-step bio-jet fuel preparation performance, and the selectivity and yield of C9-C16 can reach 56.90% and 54.52%.

A secondary growth procedure described herein is used to prepare finned zeolites. The finned zeolites possess properties that are distinctly unique compared to crystals of similar size lacking fins. The procedure is amenable to a wide range of zeolite crystal structures.

The invention provides a spherical nano ZSM-35 molecular sieve as well as a preparation method and application thereof. The spherical nano ZSM-35 molecular sieve disclosed by the invention is formed by self-assembling a plurality of long-strip rod-shaped nano ZSM-35 molecular sieves; the grain size of the spherical nano ZSM-35 molecular sieve is 40 to 100 nm, and the length of the long-strip rod-shaped nano ZSM-35 molecular sieve is preferably within 100 nm. The spherical nano ZSM-35 molecular sieve obtained by the preparation method disclosed by the invention has smaller grain size, higher specific surface area and higher external specific surface area, and has the advantages of high diffusion and high activity in applications such as catalysis, adsorption separation and the like.

A method of making a catalyst for the synthesis of dimethyl ether from syngas includes making a mesoporous ferrierite (FER), and co-precipitating precursors of mesoporous ferrierite and Cu-Zn-Al based oxides (CZA) to obtain a mixed CZA / mesoFER catalyst.

A method of making a catalyst for gasoline reactions of dimethyl ether is disclosed, which includes reacting a silica source, an aluminum source, and a structure derivative to synthesize a zeolite sol, mixing an alcohol with an organic template to form an emulsion phase, and adding the zeolite sol to the emulsion phase to react.

The invention relates to a ZSM-5, ZSM-35, Silicalite-1 or MCM-41 molecular sieve, a preparation method thereof, a catalyst and an isobutane normalizing method, and belongs to the technical field of catalyst preparation. The preparation method of the molecular sieve comprises the following steps: mixing raw materials containing a silicon source, water, an organic template agent, a metal M complex and an alkali solution to obtain a mixture; carrying out hydrothermal crystallization on the mixture, and carrying out solid-liquid separation on a crystallized product to obtain a solid phase; and roasting the solid phase to obtain the molecular sieve. The silicon source is selected from a layered silicate material. The material can solve the problem that metal is extremely easy to lose in the reaction process, meanwhile, due to the fact that the material is a layered material which is extremely high in diffusion, mass transfer and heat transfer speed, if the metal in the inner layer is lost in the reaction process, the catalytic performance of the catalyst can be reduced, and it is found through online chromatographic analysis that the catalytic performance of the catalyst is lost.

This application discloses a ZSM-35 molecular sieve and its preparation method, belonging to the field of ZSM-35 molecular sieve synthesis technology. The ZSM-35 molecular sieve is a pure phase. In the X-ray powder diffraction pattern of the ZSM-35 molecular sieve: at 2θ angles of (9.3±2)°, (12.5±2)°, (12.7±2)°, (13.4±2)°, (22.3±2)°, (22.5±2)°, (23.1±2)°, (23.6±2)°, (24.4±2)°, (25.2±2)°, (… Characteristic diffraction peaks of ZSM-35 molecular sieve (9.3), (12.5), (12.7), (13.4), (22.3), (22.6), (23.2), (23.6), (24.4), (25.2), (25.6), and (29.4) were observed at (25.6±2)° and (29.4±2)°. The relative crystallinity of ZSM-35 molecular sieve is 95~180. The preparation method of ZSM-35 molecular sieve uses a template agent and a single alkali source, which shortens the synthesis time, produces ZSM-35 molecular sieve with high crystallinity, has good reproducibility, and is easy to industrialize; moreover, the raw materials used are inexpensive, reducing the synthesis cost.

The present invention relates to a novel method for preparing FER framework IZM-8 zeolite, which allows the synthesis of FER framework IZM-8 zeolite by converting / converting FAU framework zeolite under hydrothermal conditions. In particular, this novel method allows the synthesis of FER framework IZM-8 zeolite starting from FAU framework zeolite, which is used as a source of silicon and aluminum, and N-ethyl-N-(3,3,5-trimethylcyclohexyl)pyrrolidinium hydroxide, a specific organic or structuring molecule containing a quaternary ammonium functional group. The FER framework IZM-8 zeolite obtained by the method of the present invention can be advantageously used as a catalyst, adsorbent, or separation agent.

To provide a method of producing a phenol composition with an enhanced phenol content in the phenol composition.SOLUTION: A method for producing a phenol composition comprises a step A of heating a mixture containing a cured product of a thermosetting resin composition and a zeolite to decompose the cured product of the thermosetting resin composition, wherein the zeolite includes an ion-exchanged zeolite.SELECTED DRAWING: None

The invention belongs to the technical field of solid hazardous waste resource recycling, and provides a method for synthesizing a molecular sieve by using fluorine-containing silicon powder, which comprises the following steps: fully mixing an aluminum source, an alkali source, a template agent, a fluorine complexing agent and fluorine-containing silicon powder in deionized water, and stirring to obtain synthetic gel; and transferring the mixture into a crystallization kettle with a stirring device, adding a molecular sieve seed crystal, sequentially carrying out at least two sections of dynamic crystallization processes, washing, separating and drying to obtain a fluorine-free molecular sieve product. According to the present invention, the organic amine and quaternary ammonium ion synergistic strategy is adopted, the fluorine-containing silicon powder is adopted to synthesize the high crystallinity and purity molecular sieve, the crystallization time range is wide, the control is easy, and the fluorine does not enter or is mixed into the molecular sieve product, such that the treatment problem of the dangerous solid waste can be effectively solved, and the molecular sieve synthesis cost can be substantially reduced; the resource utilization rate is improved.

To provide a method that improves efficiency of microwave heating of zeolite supporting metal cations.SOLUTION: A heating method for zeolite according to an embodiment comprises a step of heating the zeolite by applying microwaves to zeolite supporting metal cations in pores of a crystal structure, wherein a dielectric loss coefficient of the zeolite supporting metal cations is 0.05 or more.SELECTED DRAWING: None

The present invention discloses a multi-level pore MFI molecular sieve and its preparation method and application. The multi-level pores in the molecular sieve include micropores and mesopores, and the specific surface area of ​​the molecular sieve is 500-600m 2 / g, total pore volume of 0.30~0.60cm 3 / g, micropore volume is 0.15~0.30cm 3 / g, and its preparation method includes: first, synthesizing a mesoporous precursor silicon material using a first template, then mixing a second template with an aluminum source and an alkali source, and then, under the action of water vapor, performing dry gel conversion to obtain a multi-level pore MFI molecular sieve. The MFI molecular sieve of the present invention is used in the reaction of cyclopentane hydration to produce cyclopentanol, and has the characteristics of high activity, good stability, and good selectivity.

The invention provides an ion exchange method of an alkaline metal-containing molecular sieve. The ion exchange method comprises a step of contacting a molecular sieve containing alkaline metal with an ion exchange liquid and carrying out ion exchange, positive ions in the ion exchange liquid comprise hydrogen ions (H < + >) and / or ammonium ions (NH4 < + >), and negative ions in the ion exchange liquid comprise peroxide ions (O2 < 2->). According to the method disclosed by the invention, the alkaline metal cations and the residual organic template agent in the molecular sieve can be removed at the same time, the post-treatment steps are simplified, and the emission load of VOCs (Volatile Organic Compounds) is reduced.

The present invention relates to an iron-containing catalytic material for the selective catalytic reduction of NOx in exhaust gas from an internal combustion engine. The catalytic material comprises a zeolitic material comprising SiO2 and X2O3 in its framework structure, wherein X is a trivalent element such as aluminium, wherein the zeolitic material has an FER-type framework structure, wherein the deconvoluted 29Si MAS NMR of the zeolitic material comprises a specific first peak (Pl) corresponding to Q4(1AI) sites and having a maximum in the range of from -103.5 to -108.5 ppm with a certain minimum integral relative to three other peaks in the range of -90.0 to -130.0 ppm. The catalytic material also comprises Fe supported on the zeolitic material. Further, the present invention relates to a process for producing a catalytic material, an exhaust gas treatment system comprising a catalytic material in accordance with the present invention as well as to use thereof and a process for the treatment of an exhaust gas including said catalytic material.

A method for producing ferrierite (FER) zeolite without an organic template and ferrierite producible by the method. The method includes: (i) forming a reaction gel containing an aluminum source, sodium hydroxide and / or potassium hydroxide, and a silica sol; and (ii) heating the reaction gel at a temperature suitable for the growth of FER zeolite for a period suitable for the growth of FER zeolite. The reaction gel does not contain seed crystals. Further, the reaction gel does not contain an organic structure directing agent (OSDA). The ferrierite (FER) zeolite has the characteristics of: a) an SAR of 11 to 20, b) a BET surface area of 320 to 380 m 2 / g, and c) a micropore volume of 0.1 to 0.2 cm 3 / g.