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Integral aluminum oxide loaded copper catalyst with high specific surface area

A technology with alumina loading and high specific surface area, which is applied in the field of catalysis and can solve the problems of low surface area and low catalyst surface area.

Inactive Publication Date: 2017-05-31
平潭自贸区金瑜环保材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is speculated in principle that although Cu-ZSM-5 has a large specific surface area, since cordierite occupies most of the overall catalytic material and its surface area is very low, the overall surface area of ​​the catalyst should not be high.

Method used

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  • Integral aluminum oxide loaded copper catalyst with high specific surface area

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] A high specific surface area monolithic alumina-supported copper catalyst, comprising a preparation method of the monolithic alumina-supported copper catalyst and product features of the monolithic alumina-supported copper catalyst; wherein the preparation method uses the following raw materials:

[0051] Aluminum precursor: aluminum hydroxide;

[0052] Copper precursor: copper nitrate;

[0053] The first additive: a mixture of kale powder and guar gum, the mass ratio of the two is 3 to 1;

[0054] Second additive: carbon black with particle size less than 60 mesh;

[0055] Acid solution: a mixed aqueous solution of nitric acid and oxalic acid with a pH value of 0.5, wherein the molar ratio of nitric acid to oxalic acid is 1:1;

[0056] The preparation method of the monolithic alumina-supported copper catalyst described in this embodiment uses a monolithic catalyst molding die; when the molding die works as figure 1 Shown; This forming mold comprises mold first part ...

Embodiment 2

[0079] Others are the same as embodiment one, the difference is:

[0080] Copper precursor: copper acetylacetonate;

[0081] Step 1, preparing a molding precursor; wherein the ratio of the number of moles of copper-containing elements in the copper precursor to the number of moles of aluminum-containing elements in the aluminum precursor is 0.03, and the equivalent mass of copper acetylacetonate is 11..2 g;

[0082] Step 2, assembling the forming precursor and the forming mold; wherein, the mass of the forming precursor is 30.0 g.

[0083] After step four is completed, the shaped block is transformed into the final product monolithic alumina-supported copper catalyst; the preparation process is completed.

[0084] Through the characterization of the above-mentioned final product, the product of the above-mentioned preparation method, the monolithic alumina-supported copper catalyst, also has the following characteristics:

[0085] (1) The bulk mass of a single monolithic alu...

Embodiment 3

[0090] Others are the same as embodiment one, the difference is:

[0091] Step 2, assembling the forming precursor and the forming mold; wherein, the mass of the forming precursor is 23.6 g.

[0092] Step 4, program roasting of the formed block; wherein the atmosphere of roasting is pure oxygen; wherein the first temperature control stage has an initial temperature, and its value is 40 o C, with an end temperature of 350 o C; the average temperature change rate from the initial temperature to the final temperature in the first temperature control stage is 2.1 o C / min; the total time of the first temperature control stage is 2.5 h; the second temperature control stage has an initial temperature with a value of 350 o C, with an end temperature of 700 o C; the average temperature change rate from the initial temperature to the final temperature in the second temperature control stage is 1 o C / min; the total time of the second temperature control stage is 5.8 h; the third temp...

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Abstract

The invention belongs to the technical field of catalysis, relates to an integral aluminum oxide loaded copper catalyst with a high specific surface area, and includes a preparation method of a catalyst and the product features of the catalyst, wherein the following raw materials of an aluminum precursor, a copper precursor, a first additive, a second additive and an acid solution are used in the preparation method; an integral catalyst forming mold is used; through the raw materials and the forming mold, the preparation process of the integral aluminum oxide loaded copper catalyst comprises the following steps of I, preparing a formed precursor; II, assembling the formed precursor with the forming mold; III, applying pressure to the formed precursor; IV, carrying out programmed calcination on a formed block. A product prepared by the preparation method has the following product features that the block mass of a single integral aluminum oxide loaded copper catalyst can reach 1g to 100g; the specific surface area is higher; the mass content of a copper element in a single catalyst block can reach 1 to 20 percent; the X-ray diffraction peak of the catalyst only contains the spectral characteristic of aluminum oxide, but does not contain a spectral characteristic about a copper component.

Description

technical field [0001] The invention belongs to the technical field of catalysis, and relates to a high specific surface area monolithic alumina-supported copper catalyst and a preparation method thereof, in particular, to a method of forming a copper precursor and an alumina precursor mud billet into a catalyst with a high specific surface area at one time. Monolithic alumina supported copper catalyst and preparation method thereof. Background technique [0002] Catalysts are closely related to industrial production. Most of the active components of catalysts in the production of chemical products and energy carriers are transition metal components. Among them, the first-period transition metals are often focused on in practical applications due to their abundance and cheapness. Copper-based catalysts are commonly used catalysts in industry. They are often used in many chemical production processes with economic value, such as methanol synthesis, alcohol oxidation, polyol...

Claims

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Application Information

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IPC IPC(8): B01J23/72B01J37/00B01J20/08B01J20/30
CPCB01J23/72B01J20/08B01J37/0009
Inventor 不公告发明人
Owner 平潭自贸区金瑜环保材料有限公司