Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Catalyst for preparing low-carbon olefins from synthesis gas and preparation method thereof

A technology of low-carbon olefins and catalysts, applied in the field of catalysts and their preparation, can solve the problems of easy deactivation of catalysts, easy overheating, and difficulty in removing heat from reactions

Active Publication Date: 2017-05-03
CHINA PETROLEUM & CHEM CORP +1
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] One of the technical problems to be solved by this invention is that the Fischer-Tropsch synthesis reaction exists in the prior art because the Fischer-Tropsch synthesis reaction is a strong exothermic reaction. The problem of low weight selectivity provides a new catalyst for the one-step direct production of low-carbon olefins from syngas

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
  • Catalyst for preparing low-carbon olefins from synthesis gas and preparation method thereof
  • Catalyst for preparing low-carbon olefins from synthesis gas and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1) Dissolve 606.03g of ferric nitrate nonahydrate and 0.314g of rhodium trichloride in water to form a solution, then centrifuge the solution and 400g of 25% by weight of concentrated ammonia water and wash it three times with deionized water to obtain Mixed precipitation Ⅰ of fresh ferric hydroxide and rhodium oxide;

[0026] 2) 134.5g of 50% by weight of manganese nitrate and 3.13g of gallium nitrate nonahydrate were dissolved in water to make solution II;

[0027] 3) mixing and beating the solution II and the mixed sediment I to obtain a colloidal slurry III;

[0028] 4) Dissolve 0.042g of potassium hydroxide in water and add it to slurry III, mix and beat, adjust the pH value of the slurry to 5 with ammonia water, and obtain a uniform slurry that is uniformly dispersed in a sol state and will not be layered after a long period of storage Material IV (45% solid content);

[0029] 5) The slurry IV is spray-dried and molded. The inlet temperature of the sprayer is 38...

Embodiment 2

[0033] 1) Get 606.03g of ferric nitrate nonahydrate and 44.79g of iridium trichloride to be dissolved in water to form a solution, then the solution is centrifuged with 400g of 25% by weight concentrated ammonia water and washed three times with deionized water to obtain Mixed precipitation of fresh ferric hydroxide and iridium oxide I;

[0034]2) 1345g of 50% by weight manganese nitrate and 117.3g of indium nitrate pentahydrate were dissolved in water to make solution II;

[0035] 3) mixing and beating the solution II and the mixed sediment I to obtain a colloidal slurry III;

[0036] 4) Dissolve 4.20g of potassium hydroxide in water and add it to the slurry III, mix and beat, adjust the pH value of the slurry to 1 with dilute nitric acid, and obtain a uniform slurry that is uniformly dispersed in the form of a sol and will not be stratified after a long period of storage Material IV (15% solid content);

[0037] 5) Slurry IV is spray-dried and molded. The inlet temperature...

Embodiment 3

[0041] 1) get 367.43g ferric citrate and 1.57g rhodium trichloride to be dissolved in water and make solution, then this solution and the strong ammonia water of 400g 25% by weight co-flow and centrifuge, obtain fresh after washing three times with deionized water Mixed precipitation of iron hydroxide and rhodium oxide Ⅰ;

[0042] 2) 269.0g of 50% by weight of manganese nitrate and 125.2g of gallium nitrate nonahydrate were dissolved in water to make solution II;

[0043] 3) mixing and beating the solution II and the mixed sediment I to obtain a colloidal slurry III;

[0044] 4) Dissolve 1.05g of sodium hydroxide in water and add it to slurry III, mix and beat, and at the same time adjust the pH of the slurry to 3 with dilute ammonia water to obtain a sol-like dispersion that is uniform and will not be layered after long-term storage. Slurry IV (solid content 35%);

[0045] 5) Slurry slurry IV is spray-dried and formed, the inlet temperature of the sprayer is 230°C, the outl...

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 relates to a catalyst for preparing low-carbon olefins from synthesis gas and a preparation method thereof. The catalyst for preparing the low-carbon olefins from the synthesis gas and the preparation method thereof mainly solve the problems that in the prior art, because the Fischer-Tropsch synthesis reaction is a strong exothermic reaction, in the process of using a fixed bed, heat is difficult to remove in a reactor, temperature runaway is easy, the catalyst tends to be inactive and the weight selectivity of the low-carbon olefins is low. According to the technical scheme, the catalyst adopted by the method comprises, in terms of atomic ratio, a composition with a chemical formula being Fe100MnaBbCcOx, wherein B is selected from at least one of Ga and In, and C is selected from at least one of Rh and Ir. The problems can be well solved through adopting the above technical scheme, and the catalyst can be applied to industrial production of preparing the low-carbon olefins from the synthesis gas through a one-step method.

Description

technical field [0001] The invention relates to a catalyst for low-carbon olefins in synthesis gas and a preparation method thereof Background technique [0002] Fischer-Tropsch (Fascher-Tropsch) synthesis is the use of synthesis gas (mainly composed of CO and H 2 ) in the process of synthesizing hydrocarbons under the action of a catalyst is an important way for the indirect liquefaction of coal and natural gas. This method was invented by German scientists Frans Fischer and Hans Tropsch in 1923, that is, CO undergoes a heterogeneous catalytic hydrogenation reaction on a metal catalyst to generate a mixture mainly of linear alkanes and alkenes. [0003] Germany carried out the research and development of Fischer-Tropsch synthesis in the 1920s, and realized industrialization in 1936. After World War II, it was closed because it could not compete with the oil industry economically; South Africa has abundant coal resources, but oil resources Insufficient plaques and long-ter...

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
IPC IPC(8): B01J23/89C07C1/04C07C11/04C07C11/06C07C11/08C10G2/00
CPCY02P20/52
Inventor 庞颖聪陶跃武宋卫林李剑锋
Owner CHINA PETROLEUM & CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com