Catalyst for use in preparation of acrylonitrile by performing ammonia oxidation on propylene

A catalyst, acrylonitrile technology, used in the preparation of hydrocarbon ammoxidation, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc. The effect of high propylene conversion and extended production cycle

Active Publication Date: 2012-09-12
YINGKOU XIANGYANG CATALYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above patented technologies have a certain effect on improving the yield of the catalyst and prolonging the service life of the catalyst, but the activity of the catalyst is still significantly reduced with the prolongation of the use time

Method used

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  • Catalyst for use in preparation of acrylonitrile by performing ammonia oxidation on propylene
  • Catalyst for use in preparation of acrylonitrile by performing ammonia oxidation on propylene
  • Catalyst for use in preparation of acrylonitrile by performing ammonia oxidation on propylene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] 680.0g (NH 4 ) 6 Mo 7 o 24 4H 2 O was added to hot water at 70°C, stirred to dissolve it completely, and then 2064.7g of 40% (wt) silica sol was added to make material A.

[0064] 259.2g Fe(NO 3 ) 3 9H 2 O was added to hot water at 70°C, stirred to dissolve it completely, and then 77.8g Bi(NO 3 ) 3 ·5H 2 O, 513.2g Ni(NO 3 ) 2 ·6H 2 O, 32.9g Mg(NO 3 ) 2 ·6H 2 O, 41.7gLa(NO 3 ) 3 ·6H 2 O, 41.8g Ce(NO 3 ) 3 ·6H 2 O, 24.1g Al(NO 3 ) 3 9H 2 After O was stirred and dissolved, material B was made.

[0065] 1.875g NaCl, 12.5067g CsNO 3 and 5.45g AgNO 3 After being dissolved in hot water at 75°C, it was added to material B to form material C.

[0066] Add material C dropwise to material A under rapid stirring, and after aging at a constant temperature of 75°C for 4 hours, use an atomizing disc with a diameter of 50mm at a speed of 12,000 rpm at 150°C to spray-dry and form, and place the dried and formed catalyst In a rotary roaster, roast and activate...

Embodiment 2～7

[0069] The preparation method is the same as in Example 1, but the starting materials are added according to Table 1. The composition of the catalyst active components is shown in Table 2. The evaluation results are shown in Table 3.

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PUM

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Abstract

The invention relates to a catalyst for use in preparation of acrylonitrile by performing ammonia oxidation on propylene. An active ingredient of the catalyst contains a compound of which the general formula is shown as BiaFebNicMgdCeeLafCsgAghCliAljAkBlCmMo12Ox, wherein A is one or two of lithium, sodium, potassium and rubidium; B is one or more of samarium, neodymium and gadolinium; C is one or more of cobalt, calcium, tungsten and phosphorus; a-m are atomic numbers of corresponding elements; and x is an oxygen atom number which is required by the valence of other elements. In the catalyst, a plurality of element compositions are adopted, so that the surface electronegativity of the catalyst is optimized, the catalyst can generate a small amount of static electricity in a reactor under the action of high-speed air flow impact, a fine particle catalyst which flows onto a quenching tower is not adsorbed by the tube wall of the quenching tower, the service life of the device is prolonged, and production efficiency is increased.

Description

technical field [0001] The invention relates to a catalyst for preparing acrylonitrile by ammoxidation of propylene, belonging to the technical field of catalysts. Background technique [0002] Since the 1960s, Sohio Company has developed the process of producing acrylonitrile by ammoxidation of propylene. The core technology of this process is that the active components used in the catalyst contain metal elements of molybdenum and bismuth. After continuous improvement, the current Mo-Bi catalyst is very mature, and the process of producing acrylonitrile by propylene ammoxidation has been widely used in industry. [0003] Patents CN 96101529.2, CN 97106771.6, and CN 99119905.7 all introduce the catalyst for the production of acrylonitrile by the improved Mo-Bi series propylene ammoxidation. The reaction yield is better under the conditions of ene ratio and low reaction temperature. [0004] Patent CN 101168129B introduces that in addition to metal oxides such as molybdenum...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/89C07C255/08C07C253/26
CPCY02P20/52
Inventor 吕春王立才宋巨伟吕逸萌
Owner YINGKOU XIANGYANG CATALYST
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