REY molecular sieve containing phosphor and amorphous silica, preparation method and application

A molecular sieve and silicon oxide technology, which is applied in molecular sieve catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of long preparation process, complicated preparation method, low equilibrium unit cell, etc., and shorten the preparation process and preparation method Ease of use, balanced reaction rate effect

Active Publication Date: 2005-08-31
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] In summary, the Y molecular sieve containing phosphorus and rare earths in the prior art has a long preparation process, and the equilibrium unit cell of the molecular sieve after hydrothermal aging treatment is relatively low; while REY containing impregnated silicon and phosphorus can improve the hydrothermal stability, but The preparation method is complicated

Method used

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  • REY molecular sieve containing phosphor and amorphous silica, preparation method and application
  • REY molecular sieve containing phosphor and amorphous silica, preparation method and application
  • REY molecular sieve containing phosphor and amorphous silica, preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0040] Get 1000 grams of NaY molecular sieves (dry basis weight, produced by Qilu Catalyst Factory, silicon-aluminum ratio 4.96, the same below), after beating with 8 liters of deionized water, add RECl with a concentration of 157g / l 3 Solution (mixed rare earth chloride solution, in which La is calculated as oxide 2 o 3 36 wt%, CeO 2 Account for 64% by weight) 1250 milliliters, exchange 0.5 hour at 85 ℃, then add 200 milliliters of water glass solution (modulus 3.2, produced by Qilu Catalyst Factory) with a silicon oxide concentration of 250 g / l, stir at constant temperature for 0.5 hours, filter and rinse , and then roast the filter cake at 580° C. in a 100% water vapor atmosphere for 2 hours to obtain dry molecular sieve powder. Take 1000 grams of this molecular sieve dry powder (dry basis weight), beat with 4 liters of deionized water, add 500 grams of ammonium chloride solid, 35 grams of ammonium dihydrogen phosphate solid, exchange at 85 ° C for 0.5 hours, filter and r...

Embodiment 2

[0044] Take 1000 grams of NaY molecular sieves, after beating with 8 liters of deionized water, add RECl with a concentration of 157g / l 3 1875 ml of solution, exchanged at 90°C for 1 hour, then added 400 ml of water glass solution with a concentration of 250g / l, stirred at constant temperature for 0.25 hours, filtered and rinsed, and then roasted the filter cake at 600°C in a 100% water vapor atmosphere After 2 hours, a molecular sieve dry powder was obtained. Take 1000 grams of this molecular sieve dry powder, beat with 10 liters of deionized water, add 500 grams of ammonium sulfate solid, 35 grams of diammonium hydrogen phosphate solid, exchange at 85°C for 0.5 hour, filter and rinse, and dry the filter cake to obtain the present invention. Molecular sieve, the sample is marked as A2.

[0045] Rare earth content in A2 is expressed as RE 2 o 3 Calculated as 16.6% by weight, the phosphorus content is expressed as P 2 o 5 Calculated as 1.8% by weight, silicon to aluminum r...

Embodiment 3

[0048] Take 1000 grams of NaY molecular sieves, after beating with 10 liters of deionized water, add RECl with a concentration of 157g / l 3 1060 ml of solution, exchanged at 90°C for 1 hour, then added 200 ml of water glass solution with a concentration of 250g / l, stirred at constant temperature for 1 hour, filtered and rinsed, and then roasted the filter cake at 600°C in a 100% water vapor atmosphere After 2 hours, a molecular sieve dry powder was obtained. Take 1000 grams of this molecular sieve dry powder, beat with 10 liters of deionized water, add 500 grams of ammonium chloride solid, exchange at 75 ° C for 1 hour, filter and rinse, add 660 grams of 10% by weight ammonium dihydrogen phosphate aqueous solution to the filter cake, and beat After 1 hour, put it into a tray and dry it in an oven to obtain the molecular sieve of the present invention, which is denoted as A3.

[0049] Rare earth content in A3 is expressed as RE 2 o 3 Calculated as 12.9% by weight, the phosphoru...

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Abstract

A molecular sieve REY containing P and amorphous silicon oxide for decreasing the content of olefin in gasoline and improving the selectivity of coke features that in its P MAS NMR spectrum the summary area of its -15+ / -2 ppm peak and -23+ / -2 ppm peak is 85% greater than the total peak area. Its preparing process is also disclosed.

Description

technical field [0001] The present invention relates to a molecular sieve, a preparation method and its application, and more particularly to a REY molecular sieve containing phosphorus and amorphous silicon oxide, a preparation method and its application in catalytic cracking catalysts. Background technique [0002] Catalytic cracking process is an important process of lightening heavy oil, and it is one of the main sources of economic benefits of each refinery. More than 75% of the blending components in my country's finished gasoline come from catalytic cracking units. Due to the increasingly stringent restrictions on the composition of vehicle fuels in environmental protection regulations, such as the "Control Standards for Hazardous Substances in Vehicle Gasoline" formulated by the State Environmental Protection Administration in 1999, it is required The olefin content in gasoline is less than 35v%, so that the catalytic cracking unit faces incr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/82C10G45/54
Inventor 李明罡罗一斌庄立何鸣元刘中清宗保宁阎荣国闫秀君崇奇韩子海
Owner CHINA PETROLEUM & CHEM CORP
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