Modified Y zeolite and preparation method thereof

A zeolite, modified technology, applied to Y zeolite containing IVB group metals, application field in catalytic cracking

Active Publication Date: 2016-11-23
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved in the present invention is to provide a modified Y zeolite containing IVB metals and phosphorus and a preparation method thereof for the problems existing in the existing Group IVB metal modified Y zeolite. The prepared Group IVB metal-modified Y zeolite has higher thermal and hydrothermal stability

Method used

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  • Modified Y zeolite and preparation method thereof
  • Modified Y zeolite and preparation method thereof
  • Modified Y zeolite and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] (1) At room temperature (26°C, the same below), take 200g of NaY zeolite (75% by weight on a dry basis), mix it with 1500ml of hydrochloric acid solution with a molar concentration of 0.5mol / L, stir for 30 minutes, filter, and wash with 1500ml of deionized water , obtaining NaY zeolite after acid treatment, its sodium oxide content is 3.5% by weight;

[0050] (2) Calcining the NaY zeolite after the acid treatment of the obtained acid at 300°C for 3 hours to obtain a zeolite with a solid content of 96% by weight, which is designated as F1;

[0051] (3) 5.23g zirconium nitrate Zr(NO 3 ) 4 ·5H 2 O was dissolved in 200g of ethanol (analytical pure, ethanol content 99.9% by weight) to make an impregnating liquid, and the obtained impregnating liquid was mixed evenly with the zeolite F1 obtained in step (2), and allowed to stand at room temperature for 1 h;

[0052] (4) Mix the product obtained in step (3) with 800ml of ethanol, transfer it to an autoclave, and flush it wi...

Embodiment 2～7

[0056] The modified Y zeolite was prepared according to the method provided by the present invention, and its operating conditions and product properties are shown in Table 2 (refer to Example 1).

Embodiment 8

[0058] The modified zeolite was prepared according to the method of Example 1, except that nitrogen was flushed into the step (4) so ​​that the pressure (gauge pressure) was 0 MPa. The obtained modified molecular sieve is recorded as Zr(1)-P-Y-1. See Table 2 for its properties.

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Abstract

A modified Y zeolite and a preparation method thereof are disclosed; the modified Y zeolite comprises a IVB metal oxide and phosphor, the ratio of distorted four-coordinated framework aluminum to four-coordinated framework aluminum in the lattice structure of the modified Y zeolite is(0.2-0.8):1, and the ratio of zeolite surface IVB metal content to zeolite internal IVB metal content is not higher than 0.5. The preparation method comprises the following steps: acid treatment of zeolite materials, dehydration, immersion of a metal in an organic solvent, treatment of the zeolite immersed with the metal in the organic solvent, treatment of the modified Y zeolite by a phosphorus containing compound and calcination. The modified Y zeolite has high cracking activity, higher gasoline yield and lower coke yield for heavy oil cracking.

Description

technical field [0001] The present invention relates to a modified Y zeolite, more particularly to a Y zeolite containing Group IVB metals for hydrocarbon oil processing in the absence of hydrogen, its preparation method and its application in catalytic cracking. Background technique [0002] Rare earth modified Y zeolite, as the most commonly used active component of FCC catalysts, has received a lot of attention for a long time, and people have tried to improve it in various ways to improve the activity, selectivity and stability of the catalyst. Rare earth ions can significantly enhance the structural stability of Y zeolite, and a consensus has been reached. It is generally believed that rare earth ions exist in the form of hydrated ions, such as RE(H 2 O) n 3+ , during roasting and hydrothermal treatment, some rare earth ions dehydrate to generate RE(OH) 2+ , and migrate and locate from the Y zeolite supercage to the β cage, which supports and stabilizes the Y zeolite...

Claims

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Application Information

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IPC IPC(8): B01J29/08C10G11/05
Inventor 于善青田辉平王振波
Owner CHINA PETROLEUM & CHEM CORP
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