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Ceramic powder composition and slurry, catalyst and carrier as well as preparation method and application

A technology of ceramic catalyst and ceramic powder, which is applied in the direction of catalyst carrier, physical/chemical process catalyst, molecular sieve catalyst, etc. It can solve the problems of low reaction conversion rate, deactivation phenomenon, and limited range of simultaneous increase of pore size and specific surface area, etc.

Inactive Publication Date: 2011-04-13
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is to overcome the poor catalyst stability, serious deactivation phenomenon and low reaction conversion rate in the existing high-viscosity system reactions such as residual oil catalytic cracking and polymer modification reactions, and is not suitable for high-viscosity reactions. system and ceramic catalyst carrier pore size and specific surface area are limited, and other defects, such as a ceramic powder composition, ceramic slurry, and a new ceramic catalyst carrier made of the slurry, as well as its preparation method and application are provided.

Method used

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  • Ceramic powder composition and slurry, catalyst and carrier as well as preparation method and application
  • Ceramic powder composition and slurry, catalyst and carrier as well as preparation method and application
  • Ceramic powder composition and slurry, catalyst and carrier as well as preparation method and application

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preparation example Construction

[0062] The preparation method of polyacrylate leveling agent in table 2 is:

[0063] It is prepared by radical polymerization of butyl acrylate and glycidyl methacrylate, and the mass ratio of butyl acrylate to glycidyl methacrylate is 1:1.4. The polymerization initiator is benzoyl peroxide, the dosage of the initiator is 0.015wt%, and the solvent is toluene. The polymerization temperature is 130° C., the polymerization time is 2 hours, and vacuum drying is performed after stopping the reaction.

[0064] The preparation method of polyurethane leveling agent is:

[0065] Mass ratio is 3: 1 toluene diisocyanate and number average molecular weight are 1000 adipic acid-1,4 butanediol polyester diol reaction, catalyzer is dibutyltin dilaurate, catalyst consumption 0.02wt%, reaction temperature is 80°C, the reaction time is 5h, after the reaction, add 3wt% dimethylol propionic acid to extend the chain, dilute with 20% acetone, keep the temperature at 50-60°C, stir for 2h and then ...

Embodiment 1

[0067] (1) Ceramic powder composition

[0068] According to the formulation in Table 1, the ceramic powder composition was obtained after simply mixing each component.

[0069] (2) Ceramic slurry

[0070] After mixing the ceramic powder composition in step (1) with binder, dispersant, defoamer and solvent according to the formula in Table 2, adjust the pH value to 11, stir for 3 hours, and prepare ceramic slurry.

[0071] (3) Ceramic catalyst carrier

[0072] Select 32PPI flexible polyurethane foam, process it into a size of 5×5×5mm, put it in absolute ethanol for 50 minutes of ultrasonic treatment, take it out and dry it at 70°C for 2 hours, and use it as a hard templating agent.

[0073] Sodium dodecylbenzenesulfonate is selected as the soft templating agent, the ceramic slurry is mixed with the soft templating agent, the mixing mass ratio of the ceramic slurry and the soft templating agent is 20:1, and the mixture is uniformly mixed. Put the flexible polyurethane foam in...

Embodiment 2

[0076] (1) Ceramic powder composition

[0077] According to the formulation in Table 1, the ceramic powder composition was obtained after simply mixing each component.

[0078] (2) Ceramic slurry

[0079] According to the formula in Table 2, after mixing the ceramic powder composition in step (1) with binder, dispersant, defoamer, leveling agent and solvent, adjust the pH value to 11, stir for 3 hours, and make a ceramic slurry material.

[0080] (3) Ceramic catalyst carrier

[0081] Sodium dodecylbenzene sulfate is selected as the soft templating agent, the ceramic slurry is mixed with the soft templating agent, the mixing mass ratio of the ceramic slurry and the soft templating agent is 15:1, and the mixture is obtained by mixing evenly.

[0082] 50 μm carbon black was selected as the hard template agent, and the carbon black was placed in absolute ethanol for 30 minutes of ultrasonic treatment, taken out and dried at 70°C for 3 hours before use.

[0083] Mix carbon blac...

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Abstract

The invention provides a ceramic power composition, which comprises 55-95% of alumina and further comprises one or more the following components: 5-35% of feldspar powder, 5-35% of kaolin, 5-25% of zirconia, 1-10% of titanium oxide and 0.5-5% of calcium oxide. The invention further provides ceramic slurry, a ceramic catalyst carrier prepared from the slurry and application of the carrier and the catalyst in a high-viscosity reaction system. The invention overcomes the defects of poor stability, serious inactivation phenomenon, low reaction conversion rate and the like of the traditional catalyst in the reaction of the high-viscosity system, the aperture ratio of the ceramic catalyst carrier is greatly improved compared with the prior art and can even reach a millimeter scale, and meanwhile, the ceramic catalyst carrier can be maintained with higher specific surface area inside, has the properties of uniform pore opening, high porosity, heat and shock resistance, high-temperature resistance and chemical corrosion resistance, as well as excellent mechanical strength and adsorption property, can be maintained with high stability in a reaction process, can improve the conversion rate in the reaction, and is particularly suitable for the high-viscosity reaction system.

Description

technical field [0001] The present invention relates to a ceramic powder composition and its ceramic slurry. The present invention also relates to a ceramic catalyst carrier prepared by using the ceramic slurry and a preparation method thereof, as well as a catalyst prepared from the ceramic catalyst carrier and its preparation method. application. Background technique [0002] For nearly a century, synthetic polymer materials have been greatly developed and play an important role in the national economy, high-tech fields and daily life. Among these polymer materials, polyethylene (PE), polypropylene (PP), polystyrene (PS) and polyvinyl chloride (PVC) account for 70% of the market share. However, these inexpensive polymers cannot fully meet the demand for comprehensive performance of materials in various fields such as resources, energy, manufacturing, information, and the environment. If a polymer material with excellent comprehensive properties is synthesized by synthesi...

Claims

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Application Information

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IPC IPC(8): C04B35/10C04B35/622B01J32/00B01J35/10B01J23/02B01J29/08B01J23/28B01J23/58
Inventor 曹贵平王晓莉韩凯悦卢磊孟晨殷嘉兴徐文婷
Owner EAST CHINA UNIV OF SCI & TECH
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