Check patentability & draft patents in minutes with Patsnap Eureka AI!

Supported metal catalyst directly prepared from solid and application of supported metal catalyst

A metal catalyst, solid metal technology, applied in the direction of metal/metal oxide/metal hydroxide catalyst, catalyst activation/preparation, physical/chemical process catalyst, etc., can solve the problem of poor selectivity, obtaining chemicals, difficult to use in industrial production and other problems, to achieve the effect of convenient operation, simple preparation process and easy separation

Active Publication Date: 2019-05-21
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the selectivity of the nickel catalyst in the hydrogenation process is poor, and the benzene ring is hydrogenated during the reaction, which makes it difficult to obtain chemicals with benzene rings from lignin
Moreover, sulfur and phosphorus elements are generally added to nickel catalysts to improve the stability of the catalyst, resulting in the presence of sulfur and phosphorus elements in the product.
These defects make it difficult to use in industrial production

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
  • Supported metal catalyst directly prepared from solid and application of supported metal catalyst
  • Supported metal catalyst directly prepared from solid and application of supported metal catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] At room temperature, take 0.25g untreated nano-TiO 2 Place in a 50mL mechanically stirred batch kettle, add 25mL decane and 1mL guaiacol respectively, and seal the reactor. First pass nitrogen for 10 minutes to remove the air in the reactor, then replace the gas in the reactor with hydrogen, and pressurize to 4MPa. Place the reaction kettle in a heating mantle. It takes 1 hour to raise the temperature to 300°C, and maintain 300°C for 2 hours. After the reaction is completed, cool to room temperature and release the pressure. Add 0.2393g n-tetradecane internal standard into the reaction kettle, then add 30mL ethanol to dissolve other reaction products. The liquid phase product is detected in the gas phase, and the result is untreated nano-TiO 2 The reactivity is very low, and coking substances are produced during the reaction.

Embodiment 2

[0028] At room temperature, 0.25g of nano-Ni was placed in a 50mL mechanically stirred batch kettle, 25mL of decane and 1mL of guaiacol were added respectively, and the reactor was sealed. First pass nitrogen for 10 minutes to remove the air in the reactor, then replace the gas in the reactor with hydrogen, and pressurize to 4MPa. Place the reaction kettle in a heating mantle. It takes 1 hour to raise the temperature to 300°C, and maintain 300°C for 2 hours. After the reaction is completed, cool to room temperature and release the pressure. Add 0.2393g n-tetradecane internal standard into the reaction kettle, then add 30mL ethanol to dissolve other reaction products. The liquid phase product was detected in the gas phase, and the result was that the reaction selectivity of nano-Ni was very low, and the main product was benzene ring saturated substance.

Embodiment 3

[0030] At room temperature, mix the dried nano-nickel and anatase phase titanium dioxide in a mortar according to the mass ratio of 1:5, place the evenly mixed catalyst in a quartz tube, and first pass nitrogen to remove the air in the quartz tube. Then switch to 10% hydrogen-argon mixed gas for reduction, the heating rate is 10°C / min, heated to 300°C, and maintained at 300°C for 30min. After the reaction is completed, switch to nitrogen and cool to room temperature to obtain the reduced nano-nickel and titanium dioxide mixture. Disperse the mixture in deionized water, and ultrasonically oscillate and disperse in an ultrasonic cleaner. After dispersion, use a magnet to attract, filter the material dispersed in water, and dry the filtered catalyst in a vacuum oven at 60°C overnight to obtain 300 The separated nickel-supported catalyst was reduced at ℃ for 30 min. According to X-ray diffraction pattern analysis, it shows the diffraction peak of anatase phase titanium dioxide. ...

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 supported metal catalyst directly prepared from a solid and an application of the supported metal catalyst. After solid metal particles A and a reducible solid metal oxide Bare mechanically uniformly mixed, the solid metal particles A and the reducible solid metal oxide B are subjected to heat treatment at a certain temperature to form a solid mixture, and part of A ismigrated to the surface of B. Particles that the surface of A is coated with B, and particles that A is uniformly distributed on the surface of B in the solid mixture are separated, and the metal catalyst A / B with A uniformly distributed on the surface of B is obtained after separation. A is uniformly distributed on the surface of the catalyst; the catalyst has excellent selectivity in an oxygen-containing benzene ring compound hydrodeoxygenation catalysis process; and the selectivity of a phenol substance reaches 100%. The supported catalyst has a similar effect to that prepared by dissolvingsalt of a metal A traditionally. The supported catalyst has the advantages that the supported catalyst is directly prepared from a solid raw material by a one-step method; the catalyst has high selectivity; and a phenol product with a high added value can be selectively generated.

Description

technical field [0001] The invention relates to the field of preparation and catalysis, in particular to a supported metal catalyst directly prepared from a solid and its application. Background technique [0002] Heterogeneous catalysts are the most widely used catalysts in industry, because heterogeneous catalysts and reaction products are easy to separate, and the catalyst activity is stable. Among them, supported metal catalysts occupy the vast majority of heterogeneous catalysts. Supported metal catalysts can be prepared by impregnation, precipitation and ion exchange, followed by drying, calcination and activation to obtain catalysts with catalytic activity. The process is relatively complicated. However, there is no literature report on the direct preparation of supported catalysts from solids. Compared with the traditional supported catalyst prepared by dissolving metal (A) salt, the solid one-step preparation of the supported catalyst has a simple preparation proc...

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): B01J23/755B01J37/08B01J37/18B01J37/02B01J37/34C07C37/00C07C37/50C07C39/02C07C39/04
CPCY02P20/52
Inventor 张宗超张小强
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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