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Y-type zeolite with intracrystalline hierarchical pores and preparation method and application thereof

A multi-level pore and zeolite technology, applied in the direction of crystalline aluminosilicate zeolite, octahedral crystalline aluminosilicate zeolite, chemical instruments and methods, etc., can solve hydrothermal stability and weak acidity, mesopore and macropore volume Not rich enough, not widely used in the oil refining industry, etc., to achieve the effect of high silicon-aluminum ratio

Active Publication Date: 2016-03-02
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For this problem, different solutions have been proposed, for example, preparing molecular sieve crystals (ITQ-21) with ultra-large pore structures; synthesizing materials with ordered mesoporous structures (MCM-41, SBA-15, FSM-16, MAS-5), however, these routes have significant limitations
For example, molecular sieves with ultra-large pores can effectively increase the mass transfer rate, but these ultra-large-pore molecular sieve crystals require high prices and special organic template materials, which greatly limit their wide application in petroleum refining processes; The ordered mesoporous materials synthesized by bundles as templates can effectively improve the mass transfer in the reaction, but because the pore walls of the materials are in an amorphous state, the hydrothermal stability and acidity are relatively weak, so they cannot be widely used in the oil refining industry
[0005] At present, molecular sieve crystal catalytic materials with a certain mesoporous structure obtained through post-treatment are still widely used in the petroleum refining process, and there are also disadvantages that the acidity of molecular sieves decreases after post-treatment, and the volume of mesopores and macropores is not abundant enough.

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  • Y-type zeolite with intracrystalline hierarchical pores and preparation method and application thereof
  • Y-type zeolite with intracrystalline hierarchical pores and preparation method and application thereof
  • Y-type zeolite with intracrystalline hierarchical pores and preparation method and application thereof

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Embodiment 1

[0041] This embodiment provides a Y-type zeolite with intracrystalline hierarchical pores, which is prepared by the following preparation method:

[0042] Ammonium exchange process: the ratio of boron to aluminum (in B 2 o 3 , Al 2 o 3 The molar ratio of the B-NaY zeolite is 0.1 and 0.2 respectively, and then the B-NaY zeolite, ammonium salt and water with a mass ratio of 1:0.5:5 are mixed evenly to obtain a mixture, and the mixture is continuously stirred, and the concentration is 0.5mol / L hydrochloric acid solution to adjust the pH of the mixture to 2.3, raise the temperature to 30°C, stir for 1 hour while maintaining the constant pH value, filter, wash with deionized water until neutral, and dry at 120°C to obtain the ammonium form Y zeolite containing boron;

[0043] Hydrothermal treatment process: Put the obtained ammonium-type boron-containing Y zeolite into a hydrothermal device, heat up to 500°C, and pass 40% steam for 3 hours;

[0044] The above-mentioned ammoni...

Embodiment 2

[0055] This embodiment provides a Y-type zeolite with intracrystalline hierarchical pores, which is prepared by the following preparation method:

[0056] Ammonium exchange process: the ratio of boron to aluminum (in B 2 o 3 , Al 2 o 3 The molar ratio of boron-containing NaY zeolite) is 0.5 and 1 respectively, and then B-NaY zeolite, ammonium salt and water with a mass ratio of 1:1:10 are mixed evenly to obtain a mixture, and the mixture is continuously stirred, and the concentration is 0.5 mol / L hydrochloric acid solution to adjust the pH of the mixture to 3.3, raise the temperature to 50°C, stir for 1.5h while maintaining a constant pH value, filter, wash with deionized water until neutral, and dry at 120°C to obtain Boron-containing Y zeolite in the ammonium form;

[0057] Hydrothermal treatment process: Put the obtained ammonium-type boron-containing Y zeolite into a hydrothermal device, heat up to 550°C, and pass 80% steam for 2 hours;

[0058] The above-mentioned am...

Embodiment 3

[0069] This embodiment provides a Y-type zeolite containing intracrystalline hierarchical pores, which is prepared by the following preparation method:

[0070] Ammonium exchange process: the ratio of boron to aluminum (in B 2 o 3 , Al 2 o 3 The molar ratio of boron-containing NaY zeolite) is 0.8 and 1.2 respectively, and then the B-NaY zeolite, ammonium salt and water with a mass ratio of 1:1.5:15 are mixed evenly to obtain a mixture, and the mixture is continuously stirred, and the concentration is 0.5 mol / L hydrochloric acid solution to adjust the pH of the mixture to 4.3, raise the temperature to 70°C, stir for 2 hours while maintaining a constant pH value, filter, wash with deionized water until neutral, and dry at 120°C to obtain Boron-containing Y zeolite in the ammonium form;

[0071] Hydrothermal treatment process: Put the obtained ammonium-type boron-containing Y zeolite into a hydrothermal device, heat up to 650°C, and pass 100% steam for 1 hour;

[0072] The a...

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Abstract

The invention provides a Y-type zeolite with intracrystalline hierarchical pores and a preparation method and application thereof. The method comprises: mixing the NaY zeolite containing boron, ammonium salt and water to obtain a mixture, performing stirring, filtering and washing to obtain an ammonium-type Y zeolite containing boron; performing a high-temperature hydro-thermal treatment of the ammonium-type Y zeolite containing boron to obtain the Y-type zeolite with intracrystalline hierarchical pores. The Y-type zeolite with intracrystalline hierarchical pores is full of hierarchical pores structure, and the preparation method of the zeolite is simple in operation. The invention also provides the application of the Y-type zeolite with intracrystalline hierarchical pores in using as an active component of a catalytic cracking catalyst and a catalytic hydrogenation catalyst.

Description

technical field [0001] The invention relates to a Y-type zeolite and its preparation method and application, in particular to a Y-type zeolite with intracrystalline multi-level pores, its preparation method and application, and belongs to the technical field of zeolite materials and its preparation. Background technique [0002] Catalytic cracking (FCC) is the core means of lightening heavy oil in the oil refining industry, and it is also the secondary processing process of crude oil with the largest amount of catalyst. In the course of nearly 80 years of development, catalytic cracking catalysts are composed of silicon-alumina as the main element, and its pore structure is mainly composed of micropores provided by Y-type molecular sieves and a small amount of irregular mesopores endowed by the carrier. The determination of chemical composition and pore structure restricts the regulation of catalyst performance, and it is difficult to adapt to the demand for raw materials wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B39/24B01J29/08
CPCC01B39/24
Inventor 申宝剑米硕高雄厚王宝杰赵红娟孙建学郭巧霞曾鹏晖任申勇李晓慧郑庆庆张永泽
Owner BC P INC CHINA NAT PETROLEUM CORP
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