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Method for raising content of rare earth of ultra stable Y type zeolite

A zeolite and rare earth technology, applied in the direction of crystalline aluminosilicate zeolite, octahedral crystalline aluminosilicate zeolite, etc., can solve problems such as inability to stabilize the zeolite framework, achieve increased rare earth content, smooth channels, and strong heavy oil conversion capacity Effect

Active Publication Date: 2007-05-09
CHINA PETROLEUM & CHEM CORP +1
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AI Technical Summary

Problems solved by technology

In addition, the deposition of rare earth oxides on the surface of zeolite does not play a role in stabilizing the zeolite framework.

Method used

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  • Method for raising content of rare earth of ultra stable Y type zeolite

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Take 100 grams of DASY2.0 (dry basis), add it to 1 liter of 0.2N oxalic acid aqueous solution, stir to mix evenly, raise the temperature to 90-100°C and keep it for 1 hour, then filter, wash, take out the filter cake, and place it in 1 liter of decationization water, add 32ml of RECl 3 solution (319g / L), stirred, heated up to 90-95°C and kept for 1 hour, then filtered, washed, and the filter cake was dried at 120°C to obtain a rare earth ultra-stable Y-type zeolite sample, which was recorded as A1. Table 2.

Embodiment 2

[0032]Take 100 grams of DASY2.0 (dry basis), add it to 1 liter of 0.1N oxalic acid aqueous solution and stir to make it evenly mixed, raise the temperature to 90-100 ℃ and keep it for 1 hour, filter, wash, take out the filter cake, and place it in a 1 liter cationic water and add 32ml of RE(NO 3 ) 3 Solution (319g / L), stirred, heated up to 90-95°C and kept for 1 hour, then filtered, washed, and the filter cake was dried at 120°C to obtain a rare earth ultra-stable Y-type zeolite sample, which was recorded as A2, and its physical properties are shown in the table 2.

Embodiment 3

[0034] Take 100 grams of DASY2.0 (dry basis), add it to 1 liter of 0.2N citric acid aqueous solution and stir to make it evenly mixed, raise the temperature to 90-100°C and keep it for 1 hour, filter, wash, take out the filter cake, and place it in 1 liter deionized water and add 32ml of RECl 3 Solution (319g / L), stirred, heated up to 90-95°C and kept for 1 hour, then filtered, washed, and the filter cake was dried at 120°C to obtain a rare earth ultra-stable Y-type zeolite sample, which was recorded as A3, and its physical properties are shown in the table 2.

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Abstract

This invention discloses a method for raising rare earth content in super-stable Y-type zeolite. The method comprises: mixing super-stable Y-type zeolite and 0.01-2 N acid solution at a liquid / solid ratio of 4-20 at 20-100 deg.C, treating for 10-300 min, washing, filtering, adding rare earth salt solution for rare earth ion exchange, washing, filtering, and drying to obtain rare earth reinforced super-stable Y-type zeolite. The obtained rare earth reinforced super-stable Y-type zeolite has through pores without any blockage, and has obviously raised rare earth content. Cracking catalyst containing the rare earth reinforced super-stable Y-type zeolite as the active component has high heavy oil conversion ability.

Description

technical field [0001] The invention relates to a modification method of Y-type zeolite. Specifically, it is a rare earth ion exchange method that can effectively increase the rare earth content on the ultra-stable Y-type zeolite. Background technique [0002] With the increasing weight of catalytic cracking raw oil and stricter environmental protection regulations, people require catalytic cracking process to improve the conversion of heavy oil and the ability to resist heavy metal pollution, and at the same time to produce more low-carbon olefins and low-sulfur high-octane gasoline. The key to obtaining high-yield, high-octane gasoline is that the active component of the catalyst, that is, the rare earth high-silicon Y-type zeolite, can keep the crystal structure intact, have high thermal and hydrothermal stability, strong acidity and low acid density. In order to obtain the rare earth high silica zeolite with the above properties, the artificially...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B39/24
Inventor 周灵萍李峥杜军许昀田辉平朱玉霞达志坚龙军何鸣元
Owner CHINA PETROLEUM & CHEM CORP
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