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

A single-atom catalyst and its application in carbon dioxide hydrogenation reaction

A carbon dioxide and catalyst technology, which is applied to a single-atom catalyst and its application field in carbon dioxide hydrogenation, and achieves the effect of a simple preparation method

Active Publication Date: 2021-06-25
JIANGNAN UNIV
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no application of single-atom catalysts in carbon dioxide hydrogenation to methanol. In the reaction of carbon dioxide hydrogenation, there are three main hydrogenation products, CO, methanol and methane. The key to research is to obtain a certain product with high selectivity. where the

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 single-atom catalyst and its application in carbon dioxide hydrogenation reaction
  • A single-atom catalyst and its application in carbon dioxide hydrogenation reaction
  • A single-atom catalyst and its application in carbon dioxide hydrogenation reaction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) 1 g of palladium acetylacetonate and 200 g of cerium acetylacetonate were added to the ball mill, and the ball was milled at 500 rpm for 10 h. Then the obtained solid was calcined at 450 °C for 3 h in an air atmosphere to obtain Pd / CeO with a Pd content of 0.4% 2 catalyst.

[0032] figure 1 In the TEM image of the catalyst prepared in this example, no Pd particles are found in this image, but only the lattice fringes of the carrier, indicating that Pd is in a highly dispersed state on the catalyst carrier. In addition, the dispersion degree of Pd was measured by CO pulse adsorption method, and the dispersion degree of Pd was as high as 98.1%. It was considered that the Pd on the catalyst was in a monodispersed state, and the catalyst was a single-atom catalyst.

[0033] (2) Activity test: The catalytic activity of the prepared catalyst was evaluated in a fixed-bed reactor with reference to the aforementioned "catalyst performance evaluation", and the reaction cond...

Embodiment 2

[0035](1) Add 1 g of palladium acetylacetonate and 400 g of cerium acetylacetonate into a ball mill, and ball mill at 500 rpm for 10 h. The resulting solid was then calcined at 450°C for 3 h in an air atmosphere to obtain a Pd / CeO with a Pd content of 0.2%. 2 For the catalyst, the dispersion degree of Pd was measured by the CO pulse adsorption method, and the measured dispersion degree of Pd was 99.3%.

[0036] (2) The reaction conditions of the activity test are the same as in Example 1, and the results of the activity test are shown in Table 1.

Embodiment 3

[0038] (1) Add 1 g of palladium acetylacetonate and 600 g of cerium acetylacetonate into a ball mill, and ball mill at 500 rpm for 10 h. The resulting solid was then calcined at 450°C for 3 h in an air atmosphere to obtain a Pd / CeO with a Pd content of 0.1%. 2 For the catalyst, the dispersion degree of Pd was measured by the CO pulse adsorption method, and the measured dispersion degree of Pd was 99.5%.

[0039] (2) The reaction conditions of the activity test are the same as in Example 1, and the results of the activity test are shown in Table 1.

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
dispersityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a single-atom catalyst and its application in carbon dioxide hydrogenation reaction, belonging to the technical field of carbon dioxide conversion. The present invention adopts ceria, zinc oxide, zirconium dioxide, chromium trioxide, etc. as carriers, and monoatomic Pd, In, Cu, and Au are active components; wherein the weight of the catalyst carrier accounts for 95% to 99.9% of the total weight of the catalyst. %, the weight of the active component accounts for 0.01%-5% of the total weight of the catalyst. The preparation method of the catalyst in the invention is simple, and methanol or carbon monoxide can be selectively generated by adjusting the reaction conditions, and the selectivity of methanol or CO can reach more than 90%, and has broad industrial application prospects.

Description

technical field [0001] The invention relates to a single-atom catalyst and its application in carbon dioxide hydrogenation reaction, and belongs to the technical field of carbon dioxide conversion. Background technique [0002] CO 2 It is an important greenhouse gas, which will cause a series of serious environmental problems, such as climate anomalies, global warming, ocean acidification, glaciers melting, ecological damage, etc. Its emission reduction and catalytic conversion have attracted worldwide attention. Among them, the use of solar energy and other renewable energy sources to produce hydrogen through photocatalysis and photoelectric catalysis, and its use in the hydrogenation of carbon dioxide to synthesize chemical raw materials such as CO and methanol is the utilization of carbon dioxide. one of the effective ways. CO is the most common carbon-basic raw material, and its hydrogenation can directly synthesize basic chemicals and fuels such as olefins, aromatics,...

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): B01J23/63B01J23/60B01J23/68B01J23/83B01J23/10B01J37/08C07C29/154C07C29/157C07C31/04C01B32/40
CPCB01J23/63B01J23/60B01J23/685B01J23/83B01J23/10B01J37/0036B01J37/086C07C29/154C07C29/157C01B32/40B01J35/394B01J35/23B01J35/40C07C31/04Y02P20/52
Inventor 刘小浩姜枫胥月兵刘冰
Owner JIANGNAN UNIV
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com