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Method for preparing CuCl and Cu loaded solid phase catalyst

A technology of solid catalyst and solid carrier, applied in molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., to achieve the effects of avoiding waste water and waste gas, low cost, and reducing intermediate preparation processes

Inactive Publication Date: 2010-01-20
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Loaded CuCl and Cu of the present invention I The preparation method of solid catalyst has not been reported at home and abroad

Method used

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  • Method for preparing CuCl and Cu<i> loaded solid phase catalyst
  • Method for preparing CuCl and Cu<i> loaded solid phase catalyst
  • Method for preparing CuCl and Cu<i> loaded solid phase catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] CuCl 2 After mixing and grinding with the hydrogen-type Y molecular sieve carrier at a mass ratio of 1:1, take 6g of the mixed sample and put it into a quartz tank, and put it into a N 2 In a protection furnace, heat up to 500°C at a heating rate of 2°C / min, then react at a constant temperature for 4 hours, then drop to room temperature, take out a sample and weigh 3.5g, which is the prepared loaded CuCl and Cu I solid catalyst.

[0017] The results of phase analysis by X-ray diffractometer are shown in figure 1 . It can be seen from Figure 1 that copper in the prepared catalyst mainly exists in the form of cuprous chloride and is dispersed on the surface of Y molecular sieve, while it has been reported in the literature that cuprous chloride can exchange ions with H-type Y molecular sieve at 300°C-500°C form Cu I / Y active center. Therefore, the prepared catalysts were Y molecular sieve loaded CuCl and loaded Cu I solid catalyst.

Embodiment 2

[0019] CuCl 2 After mixing and grinding with A molecular sieve carrier at a mass ratio of 1:2, take 6g of the mixed sample and put it into a quartz tank, put it into an Ar protection furnace, heat it to 400°C at a heating rate of 2°C / min, and then react at a constant temperature for 3 hour, then down to room temperature, take out and weigh 3.6g, which is the prepared A molecular sieve loaded CuCl and loaded Cu I solid catalyst.

Embodiment 3

[0021] CuCl 2 with SiO 2 -Al 2 o 3 After the carrier was mixed and ground evenly at a mass ratio of 1:10, 6 g of the mixed sample was placed in a quartz tank, placed in a He protection furnace, heated to 600 °C at a heating rate of 5 °C / min, and then reacted at a constant temperature for 5 hours. Then drop to room temperature, take out and weigh 3.3g, which is the prepared SiO 2 -Al 2 o 3 Carrier loaded CuCl and loaded Cu I solid catalyst. Catalysts were analyzed by X-ray diffractometer figure 2 :

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Abstract

The invention discloses a method for preparing a CuCl and Cu loaded solid phase catalyst, which comprises the following steps: evenly mixing bivalent chlorate of copper CuCl2 and a solid carrier according to a mass ratio of between 10:1 and 1:10; and in a protective atmosphere of inert gas, heating the mixture up to the temperature of between 300 and 800 DEG C for solid phase reaction for 1 to 100 hours to prepare the CuCl and Cu loaded solid phase catalyst. The method has the advantages of using the bivalent chlorate of copper with stable property and low price to replace the univalent chlorate of copper with unstable property and high price as a raw material, saving the intermediate process of preparing the CuCl, and avoiding the generation of waste water and waste gas in large amount, along with simple preparation process, environmental protection, low cost, higher reaction activity and stability; moreover, the solid phase catalyst prepared by the method can be used for an adsorbent separating CO by pressure swing adsorption, and also be used as catalysts for synthesis of methyl carbonate by oxidative carbonylation of methanol and for catalytic reduction of NOx with hydrocarbons, so that the solid phase catalyst has quite wide industrial application prospect.

Description

technical field [0001] The invention relates to a load CuCl or load Cu I The preparation method of the solid catalyst, specifically, is a kind of divalent chloride salt CuCl with copper 2 A catalyst prepared with a solid carrier, an adsorbent used for pressure swing adsorption to separate CO, a catalyst for catalytic reduction of NOx and a catalyst for oxidative carbonylation to synthesize dimethyl carbonate. Background technique [0002] Loaded CuCl and Loaded Cu I Solid catalysts are widely used in reactions such as selective storage and reduction of NOx by hydrocarbons, adsorption and separation of CO, and carbonylation of various alcohols due to their two types of active centers, redox and metal carbonyl. (CN: 1347760A; CN: 101181688A; Olsson.L, et al, A kinetic model for ammonia selectivecatalytic reduction over Cu-ZSM-5.Applied Catalysis B: Environmental, 2008.81 (3-4): 203-217) traditional preparation Methods Cu was impregnated or coprecipitated. II Loaded on the ...

Claims

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Application Information

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IPC IPC(8): B01J27/122B01J29/10B01J29/42
Inventor 李忠王瑞玉任军郑华艳谢克昌
Owner TAIYUAN UNIV OF TECH
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