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ZSM-5/SAPO-11 composite zeolite and catalytically cracked gasoline hydrogenation quality-improved catalyzer and the methoer for preparing the same

A SAPO-11, composite zeolite technology, applied in physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of poor catalytic stability and poor comprehensive performance, and achieve the effect of improving product quality

Active Publication Date: 2007-12-05
BEIJING CUP GREEN CATALYTIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to develop a new catalyst carrier, which has balanced hydrodesulfurization, hydroisomerization / aromatization performance, and prepare a catalyst based on this carrier to solve the problem of existing catalytic cracking gasoline upgrading. The catalyst has the problems of poor catalytic stability and poor overall performance

Method used

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  • ZSM-5/SAPO-11 composite zeolite and catalytically cracked gasoline hydrogenation quality-improved catalyzer and the methoer for preparing the same
  • ZSM-5/SAPO-11 composite zeolite and catalytically cracked gasoline hydrogenation quality-improved catalyzer and the methoer for preparing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] In this example, sodium ZSM-5 / SAPO-11 composite zeolite I was synthesized.

[0034] According to chemical composition (molar ratio) 9.7 Na 2 O: 1Al 2 o 3 : 55SiO 2 : 10TEAOH (tetraethylammonium hydroxide): 3500H 2 O Prepare the initial gel of ZSM-5, put it into a 500ml reactor, and crystallize it at 175°C for 48 hours to obtain the crystallized product of ZSM-5. In the crystallized product, according to the chemical composition (molar ratio) 1DPA (di-n-propylamine): 1 Al 2 o 3 : 1P 2 o 5 : 0.4SiO2 2 :50H 2 O sequentially quantitatively add phosphorus source, aluminum source, silicon source and organic amine, and crystallize the reaction mixture gel at 185°C for 24 hours. The composition of the obtained sodium-type composite zeolite I is: sodium-type ZSM-5 silicon-alumina The ratio is 50, and the weight percentage is 30%; the silicon-aluminum ratio of the sodium type SAPO-11 is 0.3, and the weight percentage is 70%. Its scanning electron microscope photo is sh...

Embodiment 2

[0036] In this example, sodium ZSM-5 / SAPO-11 composite zeolite II was synthesized.

[0037] According to chemical composition (molar ratio) 8.5 Na 2 O:Al 2 o 3 : 68SiO 2 : 15TEAOH (tetraethylammonium hydroxide): 3000H 2 O Prepare the initial gel of ZSM-5, put it into a 500ml reaction kettle, and crystallize it at 175°C for 48 hours to obtain the crystallized product of ZSM-5. In this crystallized product, according to the chemical composition (molar ratio) DPA (di-n-propylamine): Al 2 o 3 :P 2 o 5 : 0.8SiO2 2 :50H 2 O sequentially quantitatively added phosphorus source, aluminum source, silicon source and organic amine, and crystallized the reaction mixture gel at 190°C for 24 hours to obtain sodium ZSM-5 / SAPO-11 composite zeolite II, in which: ZSM-5 The silicon-aluminum ratio is 62, and the weight percentage is 20%; the silicon-aluminum ratio of SAPO-11 is 0.6, and the weight percentage is 80%.

Embodiment 3

[0039] In this example, sodium ZSM-5 / SAPO-11 composite zeolite III was synthesized.

[0040] According to chemical composition (molar ratio) 10.6 Na 2 O:Al 2 o 3 : 79SiO 2 : 20TEAOH (tetraethylammonium hydroxide): 3600H 2 O Prepare the initial gel of ZSM-5, put it into a 500ml reaction kettle, and crystallize it at 175°C for 48 hours to obtain the crystallized product of ZSM-5. In this crystallized product, according to the chemical composition (molar ratio) DPA (di-n-propylamine): Al 2 o 3 :P 2 o 5 : 1.0 SiO 2 :50H 2 O sequentially quantitatively added phosphorus source, aluminum source, silicon source and organic amine, and crystallized the reaction mixture gel at 190°C for 24 hours to obtain sodium-type ZSM-5 / SAPO-11 composite zeolite III, in which: ZSM-5 The silicon-aluminum ratio is 70, and the weight percentage is 40%; the silicon-aluminum ratio of SAPO-11 is 0.8, and the weight percentage is 60%.

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Abstract

The present invention is one kind of catalyst with ZSM-5 / SAPO-11 composite zeolite for hydrogenating and modifying catalytically cracked gasoline and its preparation process. The composite zeolite is prepared through compounding solution A with aluminum sulfate, sulfuric acid and water; compounding solution B with water glass, tetraethyl ammonium hydroxide and water; mixing solution A and solution B to form homogeneous colloid; crystallizing the colloid mixture at 150-180 deg.c for 24-72 hr; adding phosphoric acid, pseudoboehite, silica sol and SAPO-11 synthesizing template agent; and final crystallizing at 170-200 deg.c for 24-48 hr to obtain sodium type composite zeolite. The catalyst with the composite zeolite as carrier has excellent hydrogenating and desulfurizing performance, high stability, high gasoline yield, high isomerization activity and certain aromatization activity, and may be applied in producing high quality clean gasoline product.

Description

technical field [0001] The present invention relates to ZSM-5 / SAPO-11 composite zeolite, catalytic cracking gasoline hydrogenation upgrading catalyst and preparation method thereof, especially ZSM-5 / SAPO-11 composite zeolite for catalytic cracking (FCC) gasoline hydrogenation upgrading A catalytic cracking gasoline hydrogenation upgrading catalyst and a preparation method thereof. Background technique [0002] At present, the high olefin content and sulfur content in FCC gasoline have become the key problems that plague the world's clean gasoline production. In the case of less high-octane reformed gasoline and alkylated gasoline, in order to meet the increasingly stringent clean gasoline standards, FCC gasoline hydro-upgrading has become one of the key technologies for the production of clean fuel for vehicles . [0003] US Patent No. 5,770,047 introduces a catalyst for desulfurization and olefin reduction mainly developed by Intevep Company, mainly for hydroisomerization...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/40C10G45/12
Inventor 鲍晓军范煜雷多石冈
Owner BEIJING CUP GREEN CATALYTIC TECH
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