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A kind of zirconium sol and its preparation method and application

A technology of zirconium sol and zirconium salt, which is applied in the field of preparation of zirconium sol, and can solve the problems of not providing zirconium sol, not providing a suitable method for zirconium sol, poor performance, etc.

Active Publication Date: 2021-04-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The existing zirconium sol is widely used in high temperature resistant coatings, ceramic coatings, fireproof coatings, ceramic materials, high temperature kiln repair materials, refractory materials, flame retardant materials, high temperature resistant adhesives and other fields, for the preparation of catalytic cracking catalysts, Poor performance, however the prior art does not provide a suitable way of using existing zirconium sols for catalytic cracking catalysts, nor does it provide zirconium sols suitable for use in catalytic cracking catalysts

Method used

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  • A kind of zirconium sol and its preparation method and application
  • A kind of zirconium sol and its preparation method and application
  • A kind of zirconium sol and its preparation method and application

Examples

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Embodiment approach

[0055]In one embodiment, the zirculatomal salt containing a zirconium salt with the base solution at a T1 temperature in step (1), and T1 is 50 to 80 ° C, preferably from 55 to 75 ° C; in step (2), At the T2 temperature, the mixture after the first contact is followed by the acid, and the T2 is a value between 20 to 50 ° C, and in step (3), the second contact is followed by the T3 temperature. The resulting mixture was subjected to a third contact with an acid, T3 is a value between 25 to 50 ° C, between 25 to 45 ° C. The T1-T2 (the difference in T1 and T2) is 20 to 30 ° C, T1-T3 (T1 and T3) is 20 to 30 ° C. The temperature of the reactor can be controlled by heating and / or cooling, and the temperature of the reactor is controlled by heating and / or cooled, and the temperature of each step reactor is respectively controlled at T1, T2 and T3. The deviation of the fluctuation of T1, T2 and T3 does not exceed 10 ° C.

[0056]A method of preparing an FCC catalyst (catalytic cracking cat...

Embodiment 1

[0092]Add ZroCl in the reactor2· 8h2O 35.38kg, subsequently adding a concentration of 45% by weight of sodium hydroxide solution at a temperature of 60 ° C, a concentration of 45% by weight of sodium hydroxide solution was added, and then stirred at 60 ° C at a temperature of 60 min, after the reaction was obtained. The first contact, then at a temperature of 40 ° C according to Zr: h+The ratio of 1: 1.5 was added to 19.41 kg of hydrochloric acid having a concentration of 31% by weight, and then stirred at a temperature of 40 ° C for 60 min to obtain a second contact, and then at a temperature of 40 ° C according to Zr: h.+The ratio of 1: 1.5 was added to the second contact 19.41 kg of hydrochloric acid at a concentration of 31 wt% (WT%), and stirred at a temperature of 40 ° C for 60 min to obtain a zirconium sol. The preparation conditions and ratios are shown in Table 1, and the zirconium solution obtained is shown in Table 2.

Embodiment 2

[0094]Referring to the preparation method of Example 1, ZroCl is added to the reactor2· 8h2O, then the concentration of 45 wt% of sodium hydroxide solution was added, stirred, then the concentration of 31 wt% hydrochloric acid was added, stirred, and then the concentration of 31 wt% hydrochloric acid was added, stirred, and zirconium sol. The preparation conditions and ratios are shown in Table 1, and the zirconium solution obtained is shown in Table 2.

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Abstract

A zirconium sol and its preparation method and application, the corrosion rate of the zirconium sol is not greater than 1g / m 2 h, the pH value is 2.5-4, and the viscosity is above 1000mPa·s. Its preparation method comprises: first contacting zirconium-containing salt with alkali solution, wherein Zr:OH ‑ = 1:1‑2 molar ratio; the mixture after the first contact is subjected to a second contact with an acid, wherein Zr:H + =1:1-3 molar ratio; preferably, the temperature of the first contact is 20-30°C higher than the temperature of the second contact. The mixture obtained after the second contact is subjected to a third contact with an acid, wherein Zr:H + = 1:1‑3 molar ratio. The zirconium sol is suitable for preparing a catalytic cracking catalyst, can improve the sphericity of the catalyst, and improve the hydrocarbon oil cracking reaction effect of the catalyst.

Description

Technical field[0001]The present invention relates to a method of preparation of zirconium sol, and its application in the preparation of fluidized catalytic cracking (FCC) catalyst.Background technique[0002]Fluidized catalytic cracking (FCC) is the most important means of crude oil secondary processing. The catalyst used in fluidized catalytic cracking must satisfy certain strength requirements while forming a particle diameter of 20-150 microns, an average particle diameter of about 60-80 microns, in order to meet the normal flow operation of the catalytic cracking catalyst in the reaction device. . As the crude oil becomes heavy, the ionization of the FCC feed, the degree of inferiority is deepened, and the content of the active component molecular sieve in the FCC catalyst increases, which makes the wear index of the catalyst and the spherical degree into a catalyst preparation process. problem.[0003]At present, the FCC catalyst product is mainly divided into whole-assisted mole...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G25/02C10G11/05B01J13/00B01J29/16
CPCB01J13/0047B01J29/166B01J2229/18C01G25/02C10G11/05
Inventor 严加松张万虹许明德张杰潇邱中红田辉平
Owner CHINA PETROLEUM & CHEM CORP
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