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Monolithic catalyst preparation method

A monolithic catalyst and carrier technology, applied in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve problems such as catalyst agglomeration, achieve high catalytic activity, solve catalyst agglomeration, and simple preparation process. Effect

Active Publication Date: 2019-02-26
BEIJING FORESTRY UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for preparing monolithic catalysts, which is used to solve the problem of catalyst agglomeration in the preparation process of monolithic catalysts, thereby obtaining higher catalytic activity

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Embodiment 1

[0023] Example 1. Cu 4 al 1 o 5.5 monolithic catalyst

[0024] Cu 4 al 1 o 5.5 The preparation method of monolithic catalyst is as follows:

[0025] In step (1), the precursor substances containing divalent and trivalent metal cations are mixed to form a precursor solution; the precursor solution is added to the alkaline solution to obtain a mixed solution, and the pH value of the mixed solution is controlled, and the mixed Solution aging; the aged mixed solution is continuously subjected to solid-liquid separation and washing until the solution is neutral, that is, hydrotalcite-like mud is obtained. Specifically: 12.08g Cu(NO 3 ) 2 ·3H 2 O, 4.689g Al(NO 3 ) 3 9H 2 O was dissolved in 50mL of deionized water, and after the solution became a stable, transparent homogeneous solution, the mixed solution was added dropwise with constant stirring and contained 2.649g Na 2 CO 3 In the 50mL solution, use 4mol / L NaOH solution to maintain the pH value of the system at 10. ...

Embodiment 2

[0050] Example 2. Cu 3 Fe 1 o 4.5 monolithic catalyst

[0051] Cu 3 Fe 1 o 4.5 The preparation method of monolithic catalyst is as follows:

[0052]In step (1), the precursor substances containing divalent and trivalent metal cations are mixed to form a precursor solution; the precursor solution is added to the alkaline solution to obtain a mixed solution, and the pH value of the mixed solution is controlled, and the mixed Solution aging; the aged mixed solution is continuously subjected to solid-liquid separation and washing until the solution is neutral, that is, hydrotalcite-like mud is obtained. Specifically: 18.12g Cu(NO 3 ) 2 ·3H 2 O, 10.1g Fe(NO 3 ) 3 9H 2 O was dissolved in 50mL of deionized water, and after the solution became a stable, transparent homogeneous solution, the mixed solution was added dropwise with constant stirring and contained 2.649g Na 2 CO 3 In the 50mL solution, use 4mol / L NaOH solution to maintain the pH value of the system at 10. Af...

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Abstract

The invention discloses a monolithic catalyst preparation method, which comprises: (1) preparing hydrotalcite-like mud; (2) mixing the hydrotalcite-like mud, water and a binder to obtain a coating slurry; and (3) uniformly coating a carrier with the coating slurry, drying the coated carrier, and calcining to obtain the monolithic catalyst. With the preparation method of the present invention, theproblem of catalyst agglomeration during the preparation can be overcome so as to obtain the high catalytic activity, and the preparation process is simple and efficient.

Description

technical field [0001] The invention belongs to the technical fields of environmental functional materials, environmental catalysis and environmental protection, and in particular relates to a preparation method of an integral catalyst. Background technique [0002] With the rapid development of the global economy and the acceleration of industrialization and urbanization, energy and environmental issues have become increasingly prominent. The frequent occurrence of phenomena such as acid rain and photochemical smog all indicate that the current situation of air pollution in our country is severe. Therefore, in view of a series of atmospheric environmental pollution problems caused by the current pollutant discharge, effectively controlling the discharge of pollutants and obviously improving the quality of the ecological environment have very urgent practical needs and practical significance. Pollutant control technology has also become a research hotspot. For example, nit...

Claims

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Application Information

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IPC IPC(8): B01J23/72B01J23/745B01J37/03B01J37/02B01J37/08B01D53/86B01D53/44
CPCB01D53/8687B01D2257/708B01J23/002B01J23/72B01J23/745B01J37/0018B01J37/0248B01J37/031B01J37/082
Inventor 王强阎清华邱蕾
Owner BEIJING FORESTRY UNIVERSITY