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Mixed crystal/solid alkali combined catalyst and preparation method thereof

A technology of combining catalysts and mixed crystal solid bases, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc. Limitation, late start, high cost and other problems, to achieve the effect of improving product purity and product yield, easy separation, and improving conversion rate

Active Publication Date: 2014-08-06
润桐(苏州)技术服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because solid base is a new type of catalyst, it started relatively late, especially in the preparation of solid base. The preparation process requires very fine and expensive costs. At the same time, the specific surface area and mechanical stability are also limited by the fine preparation process.

Method used

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  • Mixed crystal/solid alkali combined catalyst and preparation method thereof
  • Mixed crystal/solid alkali combined catalyst and preparation method thereof
  • Mixed crystal/solid alkali combined catalyst and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025]

[0026]

[0027] (1). First put CaCl 2 , Al Cl 3 and MgCl 2 Mix and dissolve into 125 parts of deionized water, La(NO 3 ) 3 Mix and dissolve Zn(NO3)2 into 125 parts of deionized water, dissolve sodium carbonate into 125 parts of deionized water, add 125 parts of deionized water into the reaction kettle, then add sodium tetraborate, nano-lithium carbonate and nano-copper oxide , turn on the high-speed disperser at 1500 rpm, control the temperature of all solutions at 10°C, and add CaCl 2 , Al Cl 3 and MgCl 2 Mixed solution, La(NO 3 ) 3 and Zn(NO 3 ) 2 Add the mixed solution and sodium carbonate solution into the reaction kettle dropwise, and the dropwise addition is completed within 60 minutes. Stir at a high speed for 3 hours at a temperature of 10°C, then raise the temperature to 60°C, continue stirring at a high speed for 3 hours, and promote crystal growth by raising the temperature, stop Stir, lower to normal temperature, and stand still for 24 hour...

Embodiment 2

[0031]

[0032] (1). First put CaCl 2 , Al Cl 3 and MgCl 2 Mix and dissolve into 125 parts of deionized water, La(NO 3 ) 3 and Zn(NO 3 ) 2 Mix and dissolve into 125 parts of deionized water, dissolve sodium carbonate into 125 parts of deionized water, add 125 parts of deionized water into the reaction kettle, then add sodium tetraborate, nano-lithium carbonate and nano-copper oxide, and turn on the high-speed disperser 2000 rev / min, the temperature of all solutions was controlled at 15°C, while the CaCl 2 , Al Cl 3 and MgCl 2 mixed solution, La(NO 3 ) 3 and Zn(NO 3 ) 2 The mixed solution and the sodium carbonate solution were added dropwise into the reaction kettle, and the dropwise addition was completed within 30 minutes. Stir at a high speed for 2 hours at a temperature of 15°C, then raise the temperature to 50°C, and continue to stir at a high speed for 3 hours, and promote crystal growth by heating up. Stop stirring, lower to normal temperature, and stand s...

Embodiment 3

[0036]

[0037] (1). First put CaCl 2 , Al Cl 3 and MgCl 2 Mix and dissolve in 125 parts deionized water to La(NO 3 ) 3 and Zn(NO 3 ) 2 Mix and dissolve into 125 parts of deionized water, dissolve sodium carbonate into 125 parts of deionized water, add 125 parts of deionized water into the reaction kettle, then add sodium tetraborate, nano-lithium carbonate and nano-copper oxide, and turn on the high-speed disperser 1750 rev / min, control the temperature of all solutions at 13°C, and simultaneously add CaCl 2 , Al Cl 3 and MgCl 2 Mixed solution, La(NO 3 ) 3 and Zn(NO 3 ) 2 The mixed solution and sodium carbonate solution were added dropwise into the reaction kettle together, and the dropwise addition was completed within 45 minutes. Stir at a high speed for 2.5 hours at a temperature of 13°C, then raise the temperature to 55°C, and continue to stir at a high speed for 2.5 hours to promote crystal growth by raising the temperature. Stop stirring, lower to normal t...

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Abstract

The invention discloses a mixed crystal / solid alkali combined catalyst and a preparation method thereof. The preparation method comprises the following steps: (1) adding a mixed solution A of CaCl2, AlCl3 and MgCl2, a mixed solution B of La(NO3)3 and Zn(NO3)2 and a sodium carbonate solution C into a mixed solution D of sodium borate, nano lithium carbonate and nano copper oxide, stirring at 50-60 DEG C for 2-3 hours, collecting the precipitate, washing, and drying; (2) roasting the product in the process of the step (1), and grinding into powder; and (3) mixing the product in the process of the step (2) and a triphenylphosphine cobalt solution, and evaporating the solvent to obtain the mixed crystal / solid alkali combined catalyst. According to the invention, the strength of alkali can be obviously improved, and other catalysts can be supported, so that the mixed crystal / solid alkali combined catalyst can be used for multiple processes of fine chemical synthesis and high polymer synthesis reaction, can obviously improve the conversion rate of the chemical reaction, is easy to separate, and can improve the product purity and product yield.

Description

technical field [0001] The invention relates to a solid base catalyst and a preparation method thereof. Background technique [0002] Solid base catalyst is a new type of catalyst discovered by humans. It has been paid more and more attention because of its high activity, high selectivity, mild chemical reaction conditions, easy separation of reaction system, no corrosion of equipment, environmental friendliness, and reusability. , especially in fine chemical synthesis and polymer synthesis, it makes it easy to carry out many chemical synthesis reactions with harsh reaction conditions, and makes the synthesis reaction process continuous, reducing energy consumption and environmental pollution. In recent years, solid alkali Research and development are also becoming more and more extensive. However, because solid base is a new type of catalyst, it started relatively late, especially in the preparation of solid base. The preparation process requires very fine and expensive, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/83
Inventor 施晓旦郭和森
Owner 润桐(苏州)技术服务有限公司
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