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Phosphorus-containing faujasite and preparation method thereof

A faujasite and zeolite technology, applied in the field of molecular sieve synthesis, can solve the problems of selective influence of catalytic cracking reaction, influence of hydrothermal stability, insufficient degree of ultra-stabilization, etc.

Active Publication Date: 2021-05-18
PETROCHINA CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is a large amount of non-skeletal aluminum in the product molecular sieve obtained by these two methods that has not been removed, and the selectivity of the catalytic cracking reaction will be affected; hydrothermal stability

Method used

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  • Phosphorus-containing faujasite and preparation method thereof
  • Phosphorus-containing faujasite and preparation method thereof
  • Phosphorus-containing faujasite and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0067] This embodiment provides a phosphorus-containing faujasite (specifically, a phosphorus-containing high-silicon Y-type molecular sieve), which is prepared by the following preparation method:

[0068] Weigh the 50.0g NaY zeolite sample (the molar ratio of silicon to aluminum (as SiO 2 and Al 2 o 3 The molar ratio) is 5.0; the total mass of the dry sodium faujasite is 100%, wherein the sodium oxide content is 13wt%, and the water content is 3wt%) is placed in a quartz reaction tube, and nitrogen gas is passed into it. , set the nitrogen purge rate to 50mL / min (glass rotameter), set the heating program of the reaction furnace: from the initial temperature of 30 ° C to 550 ° C after 100 min and keep it for 120 min, stop heating at this time, when the temperature naturally cools down to 410 °C At ℃, pass nitrogen gas carrying a mixed gas of silicon tetrachloride and phosphorus trichloride to react for 30 minutes; among them, the amount of silicon tetrachloride in the mixed...

Embodiment 2

[0075] This embodiment provides a phosphorus-containing faujasite (specifically, a phosphorus-containing high-silicon Y-type molecular sieve), which is prepared by the following preparation method:

[0076] Weigh the 50.0g NaY zeolite sample (the molar ratio of silicon to aluminum (as SiO 2 and Al 2 o 3 The molar ratio) is 5.0; the total mass of the dry sodium faujasite is 100%, wherein the sodium oxide content is 13wt%, and the water content is 3wt%) is placed in a quartz reaction tube, and nitrogen gas is passed into it. , set the nitrogen purge rate to 50mL / min (glass rotameter), set the heating program of the reaction furnace: from the initial temperature of 30 ° C to 550 ° C after 100 min and keep it for 120 min, stop heating at this time, when the temperature naturally cools down to 410 °C At ℃, pass nitrogen gas carrying a mixed gas of silicon tetrachloride and phosphorus trichloride to react for 30 minutes; among them, the amount of silicon tetrachloride in the mixed...

Embodiment 3

[0079] This embodiment provides a phosphorus-containing faujasite (specifically, a phosphorus-containing high-silicon Y-type molecular sieve), which is prepared by the following preparation method:

[0080]Weigh the 50.0g NaY zeolite sample (the molar ratio of silicon to aluminum (as SiO 2 and Al 2 o 3 The molar ratio) is 5.0; the total mass of the dry sodium faujasite is 100%, wherein the sodium oxide content is 13wt%, and the water content is 3wt%) is placed in a quartz reaction tube, and nitrogen gas is passed into it. , set the nitrogen purge rate to 50mL / min (glass rotameter), set the heating program of the reaction furnace: from the initial temperature of 30 ° C to 550 ° C after 100 min and keep it for 120 min, stop heating at this time, when the temperature naturally cools down to 410 °C At ℃, pass nitrogen gas carrying a mixed gas of silicon tetrachloride and phosphorus trichloride to react for 30 minutes; among them, the amount of silicon tetrachloride in the mixed ...

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Abstract

The invention provides phosphorus-containing faujasite and a preparation method thereof. The preparation method comprises the following step: carrying out a gas-solid phase reaction on dried sodium faujasite and mixed gas of silicon tetrachloride and phosphorus trichloride to obtain the phosphorus-containing faujasite. According to the phosphorus-containing faujasite prepared by the preparation method of the phosphorus-containing faujasite, phosphorus enters a zeolite framework, and the phosphorus-containing faujasite has the characteristics of high B acid content, high stability, high crystallinity, high silica-alumina ratio and low sodium content.

Description

technical field [0001] The invention belongs to the technical field of molecular sieve synthesis, and relates to a phosphorus-containing faujasite and a preparation method thereof. Background technique [0002] Faujasite, especially Y-type zeolite, is the main acidic active component of catalysts used in fluidized catalytic cracking (FCC), hydrocracking, hydroupgrading and other processes. For example, the FCC process is a process in which heavy petroleum hydrocarbons react under the action of a catalyst to produce light oil products such as liquefied gas, gasoline and diesel, and plays an important role in the production of light oil products such as gasoline and diesel. The liquefied gas generated by the catalytic cracking process is rich in propylene, and the FCC process is also an important device for the production of propylene. About 35% of my country's propylene comes from the FCC process. Therefore, the importance of Y-type molecular sieve is self-evident. [0003]...

Claims

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Application Information

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IPC IPC(8): C01B39/24
CPCC01B39/24C01P2002/86Y02P20/52
Inventor 申宝剑刘星煜赵红娟聂锁府刘宏海高雄厚刘涛刘超伟张莉王久江施巨超陈诺韩华军申宝华刘鹏郭巧霞
Owner PETROCHINA CO LTD
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