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Propylene oxidation catalyst, preparation method and use thereof

A technology for propylene oxidation and catalyst, which is used in the preparation of oxygenated compounds by hydrocarbon oxidation, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., and can solve the problems of high breakage rate and low mechanical strength of catalysts. , to achieve the effect of ensuring mechanical strength, extending operating cycle, and good technical effect

Active Publication Date: 2016-04-13
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] One of the technical problems to be solved by the present invention is the problem of low mechanical strength and high breakage rate of catalysts in the prior art, and a new propylene oxidation catalyst is provided

Method used

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  • Propylene oxidation catalyst, preparation method and use thereof
  • Propylene oxidation catalyst, preparation method and use thereof
  • Propylene oxidation catalyst, preparation method and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 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 completely, and 948 grams of 40% (wt.) silica sol and 379 grams of 20% aluminum sol were added to make material A.

[0035] 397 g Fe(NO 3 ) 3 9H 2 O was added to 150 grams of 70°C hot water, stirred and dissolved, and then 275 grams of Bi(NO 3 ) 3 ·5H 2 O, 495 g Co(NO 3 ) 2 ·6H 2 O, 452 grams of Ni (NO 3 ) 2 ·6H 2 O, 84 g Mn(NO 3 ) 2 solution (50%), 20 grams of La(NO 3 ) 3 ·3H 2 O is stirred and dissolved to make material B.

[0036] Add 250 grams of 20% ammonia water to 150 grams of tartaric acid, dissolve and add 55.6 grams of Sb 2 o 3 , and stir until Sb 2 o 3 Completely dissolved to obtain material C.

[0037] Add 2.9 grams of KNO to 20 grams of water 3 and 5.5 grams of CsNO 3 After dissolution it was added to feed B to form feed D.

[0038] Material C and material D were added dropwise to material A in turn under rapid stirring to form...

Embodiment 2～10

[0051] [Example 2-10] The catalyst is the same as [Example 1], except that different roasting times and temperatures are controlled in the pre-calcination of the catalyst, and the catalyst molding conditions and strength results are listed in Table 1.

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Abstract

The invention relates to a propylene oxidation catalyst, a preparation method thereof and applications thereof, mainly solving problems of low mechanical strength and the high breakage rate of catalysts in the prior art. According to the technical scheme adopted by the catalyst and the preparation method, at least one of SiO2 or Al2O3 is selected as a carrier, an active component shown as the general formula Mo[12]Bi[a]Fe[b]Ni[c]Sb[d]X[e]Y[f]Z[g]Q[q]O[x] is contained, wherein the X is at least one selected from Mg, Co, Ca, Be, Cu, Zn, Pb or Mn; the Y is at least one selected from Zr, Th or Ti; the Z is at least one selected from K, Rb, Na, Li, Tl or Cs; the Q is at least one selected from La, Ce, Sm or Th; and the catalyst is subjected to pre-calcination in the preparation process. By the technical scheme, the problems are solved well and the catalyst can be used in the industrial production of the acraldehyde by propylene oxidation.

Description

technical field [0001] The invention relates to a propylene oxidation catalyst, a preparation method and an application 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. In terms of stability, in addition to the influence of the catalyst composition itself, the physical properties of the catalyst, such as the mecha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/889C07C47/22C07C45/35C07C27/14C07C57/05C07C51/25
Inventor 杨斌缪晓春汪国军吴粮华
Owner CHINA PETROLEUM & CHEM CORP