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ZSM-5 catalyst having micro-pore and meso pore, preparing method thereof and method of using the catalyst to conduct catalytic cracking on hydrocarbon to produce light olefins

A ZSM-5, catalytic cracking technology, used in hydrocarbon cracking to produce hydrocarbons, molecular sieve catalysts, production of bulk chemicals, etc., can solve problems such as by-products not being effectively utilized

Active Publication Date: 2013-04-10
LOTTE CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this by-product is not efficiently utilized

Method used

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  • ZSM-5 catalyst having micro-pore and meso pore, preparing method thereof and method of using the catalyst to conduct catalytic cracking on hydrocarbon to produce light olefins
  • ZSM-5 catalyst having micro-pore and meso pore, preparing method thereof and method of using the catalyst to conduct catalytic cracking on hydrocarbon to produce light olefins
  • ZSM-5 catalyst having micro-pore and meso pore, preparing method thereof and method of using the catalyst to conduct catalytic cracking on hydrocarbon to produce light olefins

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no. 1 approach

[0093] figure 1 is a flow diagram illustrating a method for preparing microporous and mesoporous ZSM-5 catalysts according to a first embodiment of the inventive concept, figure 2 is a flow chart illustrating the process of preparing the mixture solution of step (a) in the method for preparing microporous and mesoporous ZSM-5 catalysts according to the inventive concepts, and image 3 is a flowchart for illustrating the process of replacing heat-treated solid products with cations in the method for preparing microporous and mesoporous ZSM-5 catalysts according to the inventive concept.

[0094] see figure 1 , according to the method for preparing microporous and mesoporous ZSM-5 catalysts in the first embodiment, the method for preparing microporous and mesoporous ZSM-5 catalysts includes (a) by aging a mixture of silica precursor and aluminum precursor solution to form a gel (step S100); (b) adding a template that may form mesopores through heat treatment into the gel, sti...

no. 2 approach

[0116] Figure 4 is a flowchart for illustrating a method for preparing microporous and mesoporous ZSM-5 catalysts according to a second embodiment of the present invention, and Figure 5 is a flowchart illustrating the process of impregnating phosphorus precursors in the method of preparing microporous and mesoporous ZSM-5 catalysts according to the inventive concept.

[0117] see Figure 4 , according to the second embodiment, the method for preparing a ZSM-5 catalyst having micropores and mesopores includes (a) forming a gel by aging a mixture solution including a silica precursor and an aluminum precursor (step S100); (b ) adding the template to the gel, stirring and then aging (step S200); (c) forming a solid product by crystallizing the mixture aged in step (b) (step S300); (d) heat-treating the solid product Thereby removing the template (step S400); (e) introducing phosphorus precursor into the heat-treated solid product by impregnation method or ion exchange method ...

no. 3 approach

[0129] Image 6 is a flowchart illustrating a method for preparing microporous and mesoporous ZSM-5 catalysts according to a third embodiment of the present invention, and Figure 7 It is a flowchart for illustrating the process of impregnating rare earth metal precursors or alkali metal precursors in the method for preparing microporous and mesoporous ZSM-5 catalysts according to the concept of the present invention.

[0130] see Image 6 , according to the third embodiment, the method for preparing a ZSM-5 catalyst having micropores and mesoporous pores includes (a) forming a gel by aging a mixture solution including a silica precursor and an aluminum precursor (step S100); (b ) adding the template to the gel, stirring and then aging (step S200); (c) forming a solid product by crystallizing the mixture aged in step (b) (step S300); (d) subjecting the solid product to heat treatment Thereby removing the template (step S400); (e) introducing a phosphorus precursor into the h...

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Abstract

The invention provides a ZSM-5 catalyst having a micro-pore and a meso-pore, a preparing method thereof and a method of using the catalyst to conduct catalytic cracking on hydrocarbon to produce light olefins. Specifically speaking, the method of preparing ZSM-5 catalyst of light olefin including ethylene and propylene by means of C4-C7 hydrocarbonmixture comprises the steps of (a) forming gel by aging mixture solutions including pro-silica and pro-aluminum; (b) adding a template which can possibly form a meso-pore throuh heating into the gel, and stirring and aging the mixture; (c) forming solid products through aged mixture through the step (b); (d) conducting heating on the solid products to remove the template. The ZSM-5 catalyst comprises the micro-pore and the meso-pore, and can have good physica and chemical performance along with good pore performance, and thereby the yield rate of light olefins can be increased.

Description

[0001] References to related patent applications [0002] This application claims Korean Patent Application No. 10-2011-0098694 filed with KIPO on Sep. 29, 2011 and Korean Patent Application No. 10-2011-0125643 filed with KIPO on Nov. 29, 2011 rights and interests, their disclosures are hereby incorporated by reference in their entirety. technical field [0003] The present invention relates to a ZSM-5 catalyst having micropores and mesopores (mesopores), a method for its preparation and a method for producing light olefins by catalytic cracking of hydrocarbons using the catalyst, and more particularly, to Catalytic cracking involves the physical properties of the ZSM-5 catalyst used in the process of producing light olefins, including ethylene and propylene, from a mixture of 4 to 7 carbon hydrocarbons produced after naphtha cracking. Background technique [0004] Ethylene and propylene are the main raw materials for petrochemical products and are used to prepare polyethyl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/40B01J35/10C07C11/04C07C11/06C07C11/08C07C9/04C07C9/06C07C9/08C07C9/10C07C4/06
CPCY02P20/52
Inventor 尹敏慧金美真朴世镐宋辅根宋仁奎李中源
Owner LOTTE CHEM CORP