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Acrylaldehyde catalyst prepared by propylene oxidation method and its preparation method

A technology for propylene oxidation and catalyst, which is applied to the production of acrolein catalyst by propylene oxidation method and the field of preparation thereof, can solve the problems of large amount of by-products, low catalyst reaction yield and the like, and achieves the effect of improving reaction performance

Active Publication Date: 2012-05-16
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] One of the technical problems to be solved by the present invention is that the existing catalysts have the problems of low reaction yield and large amounts of by-products such as carbon dioxide and carbon monoxide. To provide a new catalyst for the production of acrolein by oxidizing propylene

Method used

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  • Acrylaldehyde catalyst prepared by propylene oxidation method and its preparation method
  • Acrylaldehyde catalyst prepared by propylene oxidation method and its preparation method
  • Acrylaldehyde catalyst prepared by propylene oxidation method and its preparation method

Examples

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Embodiment 1

[0050] 100 g (NH 4 ) 6 Mo 7 o 24 4H 2 O was added to 100 grams of warm water at 70°C, stirred to make it all dissolve, and 86.7 grams of 40% (wt.) silica sol and 86.7 grams of 20% (wt.) aluminum sol were added to make material A.

[0051] 30.82 g Fe(NO 3 ) 3 9H 2 O was added to 20 grams of 70°C hot water, stirred and dissolved, and then 20.6 grams of Bi(NO 3 ) 3 ·5H 2 O, 57.7 g Co(NO 3 ) 2 ·6H 2 O, 27.7 g Ni(NO 3 ) 2 ·6H 2 O, 15.4 g Mn(NO3 ) 2 Solution (50%), 1.14 g Cr(NO3)3 9H2O, 7.44 g ThO 2 , 10.3 grams of Ce(NO3)3.6H2O were stirred and dissolved to make material B.

[0052] Add 0.33 g KNO to 10 g water 3 , After dissolving, it is added to material B to form material C.

[0053] Add material C dropwise to material A under rapid stirring to form a catalyst slurry, add 8.67 g of formamide, and stir and age at 70°C for 2 hours, dry the slurry at 110°C to remove most of the water, and then extrude it. get A cylindrical object of 3.5x3.5mm is then calcined ...

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Abstract

The invention relates to an acrylaldehyde catalyst by a propylene oxidation method and its preparation method, which solves the problems of low catalyst reaction yield and selectivity in the prior art. The method employs at least one of SiO2 or Al2O3 as a carrier, and the catalyst containing active components is expressed in the following general formula: Mo12BiaFebXcYdZeQfOx, wherein X is at least one selected from of Ni, Mg, Co. Ca, Be, Cu, Zn Pb or Mn; Y is at least one selected from Zr, Th or Ti; Z is at least one selected from K, Rb, Na, Li, Tl or Cs; Q is at least one of La, Ce, Sm or Th; wherein a dried control additive (DCCA) is added during the preparation process of the catalyst. The technical scheme better solves the problems. The preparation method can be used for industrial production of acrylaldehyde by using the acrylaldehyde.

Description

technical field [0001] The invention relates to a catalyst for producing acrolein by a propylene oxidation method and a preparation method thereof. Background technique [0002] The selective oxidation of olefins to prepare α, β unsaturated aldehydes and unsaturated acids is an important chemical process, and the production of unsaturated aldehydes uses a catalyst containing Mo and Bi as active components. The improvement of the catalyst is mainly carried out in terms of the activity and stability of the catalyst, such as adding transition metals to the active component to increase the activity and increase the yield of the product; adding rare earth elements to improve the redox ability; adding Fe, Co, Ni, etc. Elements to inhibit the sublimation of Mo, stabilize the active components of the catalyst, improve the service life of the catalyst, etc. [0003] There have been many patent reports on the selective oxidation of olefins: [0004] US Pat6268529 proposes a propylen...

Claims

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Application Information

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IPC IPC(8): B01J23/889C07C47/22C07C45/35C07C57/05C07C51/21
Inventor 郑育元缪晓春杨斌汪国军
Owner CHINA PETROLEUM & CHEM CORP