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

A kind of preparation method of catalyst for producing isobutylene

A catalyst, isobutylene technology, applied in the direction of catalyst activation/preparation, catalyst, carbon compound catalyst, etc., can solve the problems of low stability, short catalyst service life, high reaction temperature, improve acid impregnation efficiency, improve selectivity, The effect of high temperature resistance

Active Publication Date: 2018-03-02
山东德晨能源科技有限公司
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above patented technologies all have the disadvantages of high reaction temperature, short service life of the catalyst, and after the accumulation of coke on the surface of the catalyst, the catalyst will deactivate quickly, so the stability is not high. Frequent replacement of the catalyst will affect the production efficiency and increase the production cost, so How to extend the service life has become an urgent problem to be solved

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
  • A kind of preparation method of catalyst for producing isobutylene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] 100Kg of silicon macrospheres, 2Kg of trifluoroacetic acid, 300Kg of concentrated sulfuric acid (mass percentage concentration 98%), 0.2Kg of perfluorobetaine alkane, 0.02Kg of dioctadecyl dimethyl ammonium chloride, join 1000L Soak in a reaction kettle for 24 hours, centrifuge, dry the solid at 120°C for 30 hours, gradually raise the temperature to 600°C in air, and roast for 4 hours to prepare the catalyst. The number is K-1.

Embodiment 2

[0016] With 100Kg silicon macrosphere, the trifluoroacetic acid of 1Kg, the concentrated sulfuric acid (mass percentage concentration 98%) of 100Kg, 0.1Kg perfluoro-betaine alkane, 0.01Kg dioctadecyl dimethyl ammonium chloride, join in Soak in a 500L reaction kettle for 10 hours, centrifuge, dry the solid at 80°C for 40 hours, gradually raise the temperature to 400°C in air, and roast for 6 hours to prepare the catalyst. The number is K-2.

Embodiment 3

[0018] With 100Kg silicon macrosphere, the trifluoroacetic acid of 5Kg, the concentrated sulfuric acid (mass percentage concentration 98%) of 500Kg, 0.5Kg perfluoro-betaine alkane, 0.05Kg dioctadecyl dimethyl ammonium chloride, join in Soak in a 500L reaction kettle for 40 hours, centrifuge, dry the solid at 150°C for 15 hours, gradually raise the temperature to 800°C in air, and roast for 3 hours to prepare the catalyst. Numbered K-3.

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

No PUM Login to View More

Abstract

The invention provides a preparation method of a catalyst for production of isobutene. Large silicon balls are dipped in fluorine-containing composite acid for producing the product. High catalytic activity of the catalyst can be maintained after long-term operation, and isobutene selectivity is high.

Description

technical field [0001] The invention relates to a cracking catalyst and a preparation method thereof, in particular to a preparation method of a catalyst for producing isobutene. technical background [0002] The reaction process of MTBE cracking to produce isobutene is the reverse reaction of MTBE synthesis. In the presence of a catalyst, the isobutene in the mixed carbon four is etherified with methanol to generate MTBE. After the MTBE is separated from the mixed carbon four, it enters the cracking reactor and undergoes a catalytic cracking reaction to generate isobutene and methanol. Through water washing, it can be obtained from the reaction product. Remove methanol, and then obtain high-purity isobutene through distillation. In fact, MTBE cracking to produce isobutene is a very delicate idea. It is not so economical to separate the C4 fraction by conventional rectification, because isobutene and n-butene are isomers, and their boiling points are very similar. In theor...

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): B01J31/04B01J37/02C07C1/20C07C11/09
CPCB01J31/04B01J37/0203B01J37/0205C07C1/20C07C2531/04C07C11/09
Inventor 罗亮王琪宇
Owner 山东德晨能源科技有限公司