13 results about "Ferrierite" patented technology

The present invention relates to a catalyst for light olefins production from catalytic cracking of hydrocarbon having 4 to 7 carbon atoms, wherein said catalyst has core-shell structure comprising zeolite core selected from ferrierite, ZSM-5, or mixture thereof, and silicalite shell having MFI structure, and said catalyst has the following characteristics:a) the weight ratio of shell to core greater than 0 but less than 4;b) the mole ratio of silica to alumina (SiO2 / Al2O3) from 60 to 550;c) the hierarchical pores comprising micropores having pore size in the range of 0.1 to 2 nm, mesopores having pore size in the range of 2 to 50 nm, and macropores having pore size greater than 50 nm, wherein the proportion of volume of mesopores and macropores to the total pore volume is in the range from 0.35 to 0.90, and said mesopores comprise pores having pore size from 2 to 5 nm, wherein the proportion of volume of pores having pore size from 2 to 5 nm to the total pore volume is in the range from 0.08 to 0.30.The catalyst according to the invention provides high conversion of the reactant and especially high selectivity to light olefins. Moreover, this invention also relates to the process of light olefins production by using the catalyst thereof.

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.

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.

The invention provides a ferrierite molecular sieve catalyst and a preparation method and application thereof, and the preparation method comprises the following steps: (1) mixing a first raw material system comprising an alkali source, an aluminum source, a silicon source, a composite template agent and water, and carrying out a first reaction to obtain a first material; (2) carrying out hydrothermal treatment on the first material, and then sequentially carrying out filtering, first drying and first roasting to obtain a second material; (3) carrying out ion exchange on the second material and a second raw material system containing an aqueous solution of ammonium salt to obtain a third material; and (4) mixing the third material with a third raw material system containing a binder and a solvent, and carrying out extrusion molding, secondary drying and secondary roasting to obtain the ferrierite molecular sieve catalyst. The ferrierite molecular sieve catalyst provided by the invention has high superposition reaction selectivity, high cracking catalytic efficiency and low cost.

PROCESS FOR THE PRODUCTION OF NITRIC ACID COMPRISING A CATALYTIC TREATMENT OF N2O FROM TAIL GASES AND A NITRIC ACID PRODUCTION UNIT. The invention relates to a process for the production of nitric acid comprising at least one step for treating a gaseous effluent containing N2O, said process comprising at least the following steps in this order: - a step in which ethanol is added to the gaseous effluent; - a step for treating the gaseous effluent which is a decomposition step of N2O on a catalytic bed containing at least one catalyst comprising an iron-exchanged ferrierite zeolite, at a temperature below 400°C. The invention also relates to a nitric acid production unit. Figure for the abstract: Fig. 2

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 invention discloses a catalytic cracking catalyst for increasing the yield of low-carbon olefins, and a preparation method and a catalytic conversion method thereof. Heavy raw oil is used as a raw material, two catalytic cracking processes are adopted, a gasoline cutting device and an aromatic hydrocarbon extraction device are arranged between the two catalytic cracking processes, and materials with different properties obtained through cutting or fractionation are subjected to extraction, reaction or circulation; and the second catalytic cracking catalyst simultaneously contains ferrierite and ZSM-5 molecular sieves which are compounded with the carrier, so that high conversion rate and high selectivity can be taken into account, and the selectivity and yield of low-carbon olefins can be improved.

The present invention provides a catalyst system for treating an exhaust gas, the catalyst system comprising: a first SCR catalyst comprising an iron (Fe) ion exchanged molecular sieve having a ferrierite (FER) or MFI framework, where the first SCR catalyst is disposed on or within a substrate; and a second SCR catalyst, the second SCR catalyst comprising vanadium, where the second SCR catalyst is disposed on or within the substrate; wherein the first catalyst and the second catalyst are arranged such that, in use, exhaust gas first contacts the first SCR catalyst before contacting the second SCR catalyst. An exhaust system, method, use, and vehicle comprising or utilizing such a catalyst system are also provided.

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.

There is provided a catalyst for the conversion of syngas to light paraffins. The catalyst includes a first catalytic component comprising carbon and / or at least one oxide of at least one element selected from the group consisting of copper, zinc, and aluminum, and a second catalytic component comprising at least one zeolite selected from the group consisting of ferrierite, mordenite, theta-1, ZSM-5, H-beta, H-Y and ZSM 23. The first catalytic component and the second catalytic component are present in a weight ratio of from 90:10 to 50:50 respectively.

The present disclosure provides a method of preparing a catalyst for synthesizing dimethyl ether or methylacetate from synthetic gas that includes preparing a nanosheet ferrierite zeolite (FER), and co-precipitating the nanosheet ferrierite zeolite and a precursor of a Cu—Zn—Al-based oxide (CZA) to obtain a hybrid CZA / FER catalyst.

Disclosed are a tandem catalyst for synthesizing methyl acetate from carbon dioxide, a method for preparing the same, and a method for preparing methyl acetate using the same. The tandem catalyst of the present invention includes a first catalyst having a core-shell structure including a composite metal oxide core and a silica shell surrounding a surface of the composite metal oxide core, and a second catalyst including nano-ferrierite (N-FER) zeolite.

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.