Unlock instant, AI-driven research and patent intelligence for your innovation.

Fluid catalyst for preparing acrylonitrile by propylene ammoxidation

A technology of fluidized bed catalyst and acrylonitrile, which is applied in the direction of hydrocarbon ammoxidation preparation, metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, etc. It can solve the problem of high reaction by-products and insufficient selectivity And other issues

Active Publication Date: 2012-11-14
CHINA PETROLEUM & CHEM CORP +1
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is that when the acrylonitrile catalyst is used in the propylene ammoxidation reaction in the prior art, the reaction by-products are high and the selectivity is not good enough, and a new fluidized bed for producing acrylonitrile by propylene ammoxidation is provided. catalyst

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Fluid catalyst for preparing acrylonitrile by propylene ammoxidation
  • Fluid catalyst for preparing acrylonitrile by propylene ammoxidation
  • Fluid catalyst for preparing acrylonitrile by propylene ammoxidation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～15

[0046] According to the same catalyst composition and process as Comparative Example 1, the difference is that a specific pore-enlarging agent is added after the preparation of the catalyst slurry according to the preparation conditions in Table 1. The finished catalysts were inspected according to the above-mentioned inspection and evaluation conditions, and the initial activity results are shown in Table 2.

[0047] Table 1 catalyst preparation conditions

[0048]

Calcination temperature / ℃

Pore ​​expander dosage

/ %

Catalyst Pore Volume

/ ml / g

Pore ​​expander

Comparative example 1

580

0

0.20

Example 1

580

0.5

0.25

polyvinyl alcohol

Example 2

600

0.3

0.23

Polyvinylpyrrolidone

Example 3

690

0.8

0.28

Ethylenediamine

Example 4

550

1.5

0.31

30% Ascorbic Acid and 70% Mannitol

...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention relates to a fluid catalyst for preparing acrylonitrile by propylene ammoxidation, which mainly solves the problems of high reaction by-product and poor selectivity of an acrylonitrile catalyst in the prior art. In the technical scheme, SiO2, Al2O3 or a mixture thereof is elected as a carrier; a contained active component is expressed by the following general formula of Mo12BiaFebNicXdYeZfQgOx, wherein X is selected from at least one of Mg, Co, Ca, Be, Cu, Zn, Pb, Mn or Te; Y is selected from at least one of La, Ce or Sm; Z is selected from at least one of K, Rp, Na, Li or Cs; and Q is selected from at least one of Ti, Zr, Nb or Sb; and the catalyst is prepared by adding a pore-expanding agent after catalyst slurry is prepared and then carrying out spray drying and calcining activation. The invention more favorably solves the problems and can be used for the industrial production for preparing the acrylonitrile by the propylene ammoxidation.

Description

technical field [0001] The invention relates to a fluidized bed catalyst for producing acrylonitrile by ammoxidation of propylene. Background technique [0002] The ammoxidation of olefins to prepare α and β unsaturated nitriles was developed by BP in the 1960s. The core technology of this process is to use a catalyst whose active components contain Mo and Bi. After continuous improvement, the Mo-Bi series catalyst is very mature at present, and the process of preparing acrylonitrile by ammoxidation of propylene has been widely used in industry. In the past, the improvement of the catalyst was mainly carried out from the aspects of the activity and stability of the catalyst, such as adding transition metals to the active component to improve the activity and increase the yield of the product; adding rare earth elements to improve the redox ability; adding elements such as Na and P To improve the wear resistance of the catalyst; add Fe, Co, Ni and other elements to inhibit t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/887B01J35/10C07C253/26C07C255/08
CPCY02P20/52
Inventor 姜家乐杨斌宋卫林
Owner CHINA PETROLEUM & CHEM CORP