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

co 2 Iron-based catalyst, preparation method and application of hydrogenation ethanol

An iron-based catalyst and ethanol production technology, which is applied in the direction of catalyst activation/preparation, hydroxyl compound preparation, metal/metal oxide/metal hydroxide catalyst, etc., can solve the problems of low ethanol selectivity and large output, and achieve Efficient conversion of CO2, the effect of relieving environmental pressure

Active Publication Date: 2021-12-07
BEIJING UNIV OF CHEM TECH
View PDF14 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the existing catalyst CO 2 Iron-based catalysts for hydrogenation to ethanol have the disadvantages of high output of by-product CO and relatively low selectivity to ethanol

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
  • co <sub>2</sub> Iron-based catalyst, preparation method and application of hydrogenation ethanol
  • co <sub>2</sub> Iron-based catalyst, preparation method and application of hydrogenation ethanol
  • co <sub>2</sub> Iron-based catalyst, preparation method and application of hydrogenation ethanol

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] a CO 2 The preparation method of the iron-based catalyst of hydrogenation ethanol, comprises the steps:

[0039] 1) dissolving the auxiliary salt lithium citrate into solvent water to obtain an aqueous solution of lithium citrate;

[0040] 2) Lithium citrate aqueous solution impregnated into Fe 3 o 4 On the catalyst powder, after stirring evenly, dry at 120°C for 12 hours to obtain the catalyst;

[0041] 3) The catalyst is compressed at 10MPa, and then granulated to 20-40 mesh to obtain the catalyst;

[0042] 4) Load 0.5 g of catalyst, and first reduce it with synthesis gas. The specific reduction conditions are 300°C and the gas velocity is 4500h -1 (V / V), the reduction time is 10 h, and after the reduction is completed, the catalyst is lowered to room temperature with nitrogen to obtain the product. Fe in the product 5 C 2 / Fe 2 C / Fe 3 The ratio of C is finally adjusted to 20 / 8 / 4.

[0043] Efficient catalytic conversion of CO 2 Experimental conditions: fixe...

Embodiment 2

[0046] a CO 2 The preparation method of the iron-based catalyst of hydrogenation ethanol, comprises the steps:

[0047] 1) dissolving the auxiliary salt trisodium citrate into solvent water to obtain an aqueous solution of trisodium citrate;

[0048] 2) Immerse trisodium citrate aqueous solution into Fe 3 o 4 On the catalyst powder, after stirring evenly, dry at 120°C for 12 hours to obtain the catalyst;

[0049] 3) The catalyst is compressed at 10MPa, and then granulated to 20-40 mesh to obtain the catalyst;

[0050] 4) Load 0.5 g of catalyst, and first reduce it with synthesis gas. The specific reduction conditions are 300°C and the gas velocity is 4500h -1 (V / V), the reduction time is 10 h, and after the reduction is completed, the catalyst is lowered to room temperature with nitrogen to obtain the product.

[0051] Efficient catalytic conversion of CO 2 Experimental conditions: fixed bed reactor, temperature 300°C, pressure 3MPa, mixed gas H 2 / CO 2 =3, gas velocit...

Embodiment 3

[0055] a CO 2 The preparation method of the iron-based catalyst of hydrogenation ethanol, comprises the steps:

[0056] 1) dissolving the auxiliary salt tripotassium citrate into solvent water to obtain tripotassium citrate aqueous solution;

[0057] 2) Immerse tripotassium citrate aqueous solution into Fe 3 o 4 On the catalyst powder, after stirring evenly, dry at 120°C for 12 hours to obtain the catalyst;

[0058] 3) The catalyst is compressed at 10MPa, and then granulated to 20-40 mesh to obtain the catalyst;

[0059] 4) Load 0.5 g of catalyst, and first reduce it with synthesis gas. The specific reduction conditions are 300°C and the gas velocity is 4500h -1 (V / V), the reduction time is 10 h, and after the reduction is completed, the catalyst is lowered to room temperature with nitrogen to obtain the product.

[0060] Efficient catalytic conversion of CO 2 Experimental conditions: fixed bed reactor, temperature 300°C, pressure 3MPa, mixed gas H 2 / CO 2 =3, gas velo...

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 discloses a CO 2 Iron-based catalyst, preparation method and application of hydrogenation ethanol, the CO 2 The active sites of iron-based catalysts for hydrogenation to ethanol include Fe 5 C 2 , Fe 2 C and Fe 3 C, and the Fe 5 C 2 :Fe 2 C:Fe 3 C mass ratio is 20‑36:7‑12:4‑6. The invention also discloses the preparation method and application of the catalyst. Catalyst of the present invention in CO 2 In the process of hydrogenation to ethanol, ethanol selectivity ≥ 20%, CO selectivity ≤ 10%; CO of the present invention 2 The catalyst prepared by the preparation method of iron-based catalyst for hydrogenation to ethanol realizes the efficient synergistic effect of the additive and the active metal iron oxide. The additive effectively changes the reduction performance of the active metal iron oxide, and efficiently regulates the catalyst's The type and ratio of the active metal iron-carbon compound, thereby improving the catalytic reactivity of the catalyst.

Description

technical field [0001] The invention relates to a catalyst, a preparation method and an application. More specifically, a CO 2 Iron-based catalyst, preparation method and application of hydrogenation ethanol. Background technique [0002] The excessive use of fossil fuels has led to a sharp decline in the content of fossil fuels and a sharp increase in carbon dioxide emissions, which has led to a series of problems, however carbon dioxide is an abundant, non-toxic carbon source of industrial waste gases, due to major global warming and other environmental problems , catalytic conversion of CO 2 Highly attractive for various valuable fuels and chemical feedstocks such as light olefins, carbonates, formic acid and alcohols. Among these basic raw materials, ethanol is an essential chemical product, an important solvent, an industrial building block, and a promising renewable fuel. CO directly 2 Hydrogenation to ethanol is a particularly attractive and promising route for e...

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): B01J27/22B01J23/889B01J37/02B01J37/18C07C29/156C07C31/08
CPCB01J23/8892B01J27/22B01J37/0201B01J37/0203B01J37/18C07C29/156C07C31/08
Inventor 张燚卢方旭陈鑫
Owner BEIJING UNIV OF CHEM TECH
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