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Catalyst for preparing unsaturated aldehydes and unsaturated acids by oxidation method

An unsaturated and catalyst technology, applied in the field of unsaturated aldehyde and unsaturated acid synthesis, can solve the problems of olefin conversion rate, unsaturated aldehyde and unsaturated acid yield decline, etc., and achieve good stability, high conversion rate and yield. rate, the effect of good technical effect

Active Publication Date: 2015-09-23
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] One of the technical problems to be solved by the present invention is the problem that the conversion rate of olefins and the yield of unsaturated aldehyde and unsaturated acid decrease in the long-term operation of existing catalysts, and a new oxidation method for preparing unsaturated aldehyde and unsaturated acid is provided. catalyst

Method used

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  • Catalyst for preparing unsaturated aldehydes and unsaturated acids by oxidation method
  • Catalyst for preparing unsaturated aldehydes and unsaturated acids by oxidation method
  • Catalyst for preparing unsaturated aldehydes and unsaturated acids by oxidation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] 1000 g (NH 4 ) 6 Mo 7 o 24 4H 2 O was added to 1000 grams of warm water at 70°C, stirred to dissolve it all, and then 2.88 grams of KNO was added 3 and 5.49 grams of CsNO 3Material 1 was obtained; then 800 g of 40% (wt.) silica sol was added to make material 2.

[0056] 248 g Bi(NO 3 ) 3 ·5H 2 O was added to 150 g of 90°C hot water, stirred and dissolved, and 516 g of Co(NO 3 ) 2 ·6H 2 O, 452 grams of Ni (NO 3 ) 2 ·6H 2 O, 84 g Mn(NO 3 ) 2 (50%), 20 grams of La(NO 3 ) 3 ·3H 2 O and 41.8 g Sb 2 o 3 Material 3 was made after stirring and dissolving.

[0057] Add material 3 to material 2 under rapid stirring to form catalyst slurry 1.

[0058] 200 g C 4 h 4 FeO 6 Add 300 grams of hot water at 90°C to dissolve material 4, then add material 4 to slurry 1 to form slurry 2, dry slurry 2 at 130°C for 20 hours, and pulverize to obtain a catalyst precursor with an average particle size of 33 μm. Body 1.

[0059] 400 grams of catalyst precursor 1 was rol...

Embodiment 2

[0112] 1000 g (NH 4 ) 6 Mo 7 o 24 4H 2 O was added to 1000 grams of warm water at 70°C, stirred to dissolve it all, and then 5.73 grams of KNO was added 3 Material 1 was obtained; then 860 grams of 40% (wt.) silica sol and 543 grams of 20% (wt.) aluminum sol were added to make material 2.

[0113] 217 g Bi(NO 3 ) 3 ·5H 2 O was added to 150 grams of hot water at 90°C, stirred and dissolved, and then 229 grams (NH 4 ) 5 h 5 [H 2 (WO 4 ) 6 ]H 2 O, 635 g Co(NO 3 ) 2 ·6H 2 O, 469 grams of Ni (NO 3 ) 2 ·6H 2 O, 105 g Mn(NO 3 ) 2 (50%), 103 g Ce(NO 3 ) 3 ·6H 2 O, 19.5 g Sb 2 o 3 and 2.64 grams of CrO 3 Material 3 was made after stirring and dissolving.

[0114] Add material 3 to material 2 under rapid stirring to form catalyst slurry 1.

[0115] 272 g C 4 h 4 FeO 6 Add 300 grams of hot water at 90°C to dissolve material 4, then add material 4 to slurry 1 to form slurry 2, dry slurry 2 at 130°C for 20 hours, and pulverize to obtain a catalyst precursor ...

Embodiment 3

[0127] 1000 g (NH 4 ) 6 Mo 7 o 24 4H 2 O was added to 1000 grams of warm water at 70°C, stirred to dissolve it all, and then 3.15 grams of KNO was added 3 and 5.54 g RbNO 3 Material 1 was obtained; then 800 g of 40% (wt.) silica sol was added to make material 2.

[0128] 213 g Bi(NO 3 ) 3 ·5H 2 O was added to 150 g of 90°C hot water, stirred and dissolved, and then 503 g of Co(NO 3 ) 2 ·6H 2 O, 372 grams of Ni (NO 3 ) 2 ·6H 2 O, 29.2 g Sb 2 o 3 and 32.9 grams of Sm 2 o 3 Material 3 was made after stirring and dissolving.

[0129] Add material 3 to material 2 under rapid stirring to form catalyst slurry 1.

[0130] 248 g C 4 h 4 FeO 6 Add 300 grams of hot water at 90°C to dissolve material 4, then add material 4 to slurry 1 to form slurry 2, dry slurry 2 at 130°C for 20 hours, and pulverize to obtain a catalyst precursor with an average particle size of 33 μm. Body 1.

[0131] 400 grams of catalyst precursor 1 was rolled and molded to obtain a Φ5mm spher...

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Abstract

The invention relates to a catalyst for preparing unsaturated aldehydes and unsaturated acids by an oxidation method and a preparation method thereof, and a synthesis method of the unsaturated aldehydes and the unsaturated acids, and is used for mainly solving the problem that the catalyst long running activity is declined in the prior art. The problem is better solved by adopting the technical scheme that a carrier is at least one selected from SiO2 or Al2O3, and an active component contains Mo12BiaFebXeYfZgQqOj, wherein X is at least one selected from Ni, Mg, Co, Ca, Be, Cu, Zn, Pb, Mn or Ba, Y is at least one selected from Zr, Nb, Sb or Ti, Z is at least one selected from K, Rb, Na, Li, Tl or Cs, and Q is at least one selected from La, Ce, Sm or Th. The catalyst can be used in industrial production of the unsaturated aldehydes and the unsaturated acids.

Description

technical field [0001] The invention relates to a catalyst for preparing unsaturated aldehyde and unsaturated acid by oxidation method, its preparation method, and a synthesis method of unsaturated aldehyde and unsaturated acid. 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 o...

Claims

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Application Information

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IPC IPC(8): B01J23/889B01J23/887C07C27/14C07C45/35C07C47/22C07C51/25C07C57/05
Inventor 杨斌徐文杰缪晓春奚美珍汪国军
Owner CHINA PETROLEUM & CHEM CORP
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