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Copper-based catalyst containing inorganic expanding agent and preparation method thereof

A technology of copper-based catalyst and pore-enlarging agent, which is applied in the preparation of organic compounds, catalysts for physical/chemical processes, chemical instruments and methods, etc. and other problems, to achieve the effect of increasing the pore size, simple processing materials, and improving heat resistance and activity.

Active Publication Date: 2010-10-06
DATANG INT CHEM TECH RESINST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this treatment method has the risk of local overheating and local sintering of the catalyst.
There are also catalysts that use inorganic compounds as pore-enlarging agents, but their preparation and use methods are relatively complicated and cannot meet the needs of large-scale industrial production.

Method used

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  • Copper-based catalyst containing inorganic expanding agent and preparation method thereof
  • Copper-based catalyst containing inorganic expanding agent and preparation method thereof
  • Copper-based catalyst containing inorganic expanding agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Preparation of CuZnAl Mixed Oxide Catalyst Precursor

[0043] 1. Take 1mol L -1 Cu(NO 3 ) 2 Solution 140mL and 1mol L -1 Zn(NO 3 ) 2 Solution 60mL, put in a 400mL beaker, stir to mix;

[0044] 2. Take 0.5mol L -1 Na 2 CO 3 Put 440mL of the solution in a 1000mL beaker, heat to 78°C, and add the mixture obtained in Step 1 to Na at a rate of 25mL / min under stirring. 2 CO 3 In the solution, control the pH=8.2 after the feeding is completed, and stop the heating and stirring after the Cu and Zn masterbatches are aged at 82°C for 1 hour;

[0045] 3. Add 1.6g of pseudo-boehmite to the aged Cu and Zn masterbatch, stir for 20 minutes, and wash the obtained material with deionized water until Na-free + ;

[0046] 4. Filter and drain, dry the filter cake at 110°C for 2 hours, crush it, bake it in a muffle furnace at 380°C for 3 hours, take it out for later use.

[0047] Preparation of Pore Expander Mixture of Basic Copper Zinc Carbonate and Aluminum Hydroxide

[0048...

Embodiment 2-4

[0054] Get 0.15 grams, 0.2 grams and 0.3 grams of the basic copper-zinc carbonate and aluminum hydroxide mixture pore-enlarging agent prepared in Example 1, mix them with 5 grams of copper-zinc-aluminum mixed oxide catalyst precursor respectively, and grind together for 20 minutes until they are evenly mixed , after tableting, crush and sieve to 20-40 mesh. In the prepared catalyst, the added amount of the pore-enlarging agent is respectively 3% by weight, 4% by weight, and 6% by weight, which are recorded as cat 2, cat 3, and cat 4.

Embodiment 5

[0059] Embodiment 5 Forming pore-enlarging agent of the present invention influences on catalyst

[0060] The initial activity and activity after heat treatment of the catalysts prepared in Examples 1-4 and Comparative Examples 1 and 2 were tested by using a miniature fixed-bed reaction device, and the results are shown in Table 1. Adopt full-automatic physicochemical adsorption tester Micromeritics Tristar3000 (produced by U.S. Mike Instrument Company) to test the BET characterization effect of the catalysts prepared in Examples 1-4 and Comparative Examples 1 and 2, the results are shown in Table 2, and the test uses high-purity Nitrogen is the adsorbate, and the test was carried out at the temperature of liquid nitrogen (77k). Before the test, the sample was treated in vacuum at 120°C for 1 hour, and then at 300°C for 3 hours. The amount of sample used was about 0.1g.

[0061] Table 1: The copper-based catalyst of the present invention, the copper-based catalyst without po...

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Abstract

The invention provides a forming expanding agent of a copper-based catalyst for synthesizing methanol through a synthesis gas reaction, a preparation method and an application thereof, a copper-based catalyst and a preparation method thereof. The forming expanding agent is a mixture of basic cupric zinc carbonate and aluminum hydroxide, and the copper-based catalyst comprises oxides of cupric, zinc and aluminous. The aperture of the copper-based catalyst can be increased, the activity and the thermal stability of the copper-based catalyst can be improved by the forming expanding agent.

Description

technical field [0001] The invention relates to the field of copper-based catalysts. In particular, the invention relates to a forming pore-enlarging agent for a copper-based catalyst used in synthesis gas reaction to prepare methanol, a preparation method and application thereof, a copper-based catalyst and a preparation method thereof. Background technique [0002] Methanol is an important organic chemical raw material, widely used in pesticides, medicines, dyes, coatings and national defense industries. With the development of science and technology and the change of energy structure in the world today, it has become a trend to use methanol as a new source of petrochemical raw materials. The synthesis of methanol from synthesis gas has been industrialized. At present, the medium and low pressure gas phase method is widely used in the world to synthesize methanol, and the catalysts used are mainly mixed oxides of copper, zinc and aluminum. However, since the calorific va...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/80B01J23/72C07C31/04C07C29/154
CPCY02P20/52
Inventor 杨意泉丁雯李春启忻仕河周帅林陈爱平王丽丽刘迎伟方维平邱波
Owner DATANG INT CHEM TECH RESINST
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