High-loading-capacity nickel-aluminum catalyst as well as preparation method and application thereof

A catalyst and nickel-aluminum technology, which is applied in the field of high-load nickel-aluminum catalyst and its preparation, can solve the problems of Raney nickel storage and transportation safety hazards, environmental pollution, oxidative combustion, etc., and achieve safe storage and transportation improvement and optimization. Hydrogen process, the effect of reducing the cost of hydrogenation

Pending Publication Date: 2022-07-22
TAIYUAN UNIV OF TECH
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the production of Raney nickel, it is necessary to use concentrated sodium hydroxide solution to remove the aluminum in the nickel-aluminum alloy at a certain temperature. Such a production method has serious environmental pollution and other problems.
At the same time, the porous structure produced during the concentrated alkali etching process will store the accompanying hydrogen, making it prone to oxidative combustion in the air, which brings certain safety hazards to the storage and transportation of Raney nickel.
In addition, many used Raney nickels need to be inactivated and destroyed before they can be filtered, which leads to the generation of a large amount of solid waste

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
  • High-loading-capacity nickel-aluminum catalyst as well as preparation method and application thereof
  • High-loading-capacity nickel-aluminum catalyst as well as preparation method and application thereof
  • High-loading-capacity nickel-aluminum catalyst as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A preparation method of a high-load nickel-aluminum catalyst comprises:

[0039] Step S1: mixing a certain molar ratio of nickel salt solution, aluminum salt solution and magnesium salt solution uniformly, and stirring on a magnetic stirrer for 30 min, so that the metal ions are completely and uniformly dispersed;

[0040] Step S2: Synthesis of metal oxide precursor: adding a precipitant to the above metal solution, stirring at room temperature for 20 min, and then placing it in an oil bath to stir the reaction, and then centrifuging, washing with distilled water until neutral, and calcining to obtain the metal oxide precursors; and

[0041] Step S3: Reduction and Magnesium Evaporation Induction: The oxide precursor is placed in a tube furnace, and the reduction is performed first, and then the temperature is changed to the evaporation induction temperature to evaporate the Mg element to induce the production of stable nickel with a high load Aluminum catalyst.

[004...

Embodiment 2

[0055] A high-load nickel-aluminum catalyst can be prepared by using the preparation method of the nickel-based catalyst provided in Example 1;

[0056] The molecular formula of the high-loaded nickel-based carbide catalyst is Ni x -Mg y / Al 2 O 3 -T, where x / y represents the molar ratio of nickel and magnesium charged, and T represents the temperature induced by the evaporation of Mg;

[0057] As a supported catalyst, the loading of the catalyst is 50wt%-90wt%;

[0058] Preferably, 0.5≤x / y≤4;

[0059] Preferably, 500≤T≤900.

[0060] In some specific embodiments, the molecular formula of the nickel-based catalyst is Ni 3 -Mg 3 / Al 2 O 3 -800.

Embodiment 3

[0062] An application of a high-capacity nickel-based carbide catalyst, the high-capacity nickel-aluminum catalyst provided in Example 2 is applied to the hydrogenation reaction of fused-ring aromatic hydrocarbons.

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 magnesium evaporation induced high-load nickel-aluminum catalyst as well as a preparation method and application thereof. The catalyst consists of a carrier Al2O3, high-load metal Ni and part of Mg. The molecular formula of the catalyst is expressed as Nix-Mgy/Al2O3-T, x/y represents the feeding molar ratio of Ni to Mg, and T represents the evaporation induction temperature. The catalyst provided by the invention has the Ni content of 50-90%, and the catalyst activated by hydrogen has the advantages of stable structure, convenience in storage and transportation and the like. The catalyst shows good hydrogenation activity in hydrogenation of naphthalene, phenanthrene, anthracene and the like, and is a good polycyclic aromatic hydrocarbon hydrogenation catalyst.

Description

technical field [0001] The invention belongs to the technical field of catalysts, and in particular relates to a high-load nickel-aluminum catalyst and a preparation method and application thereof. Background technique [0002] In recent years, with the rapid development of the steel industry, the production capacity and output of coal tar in my country have also increased year by year. Since the 1990s, in order to alleviate the shortage of oil supply, my country has begun to attach importance to the development and utilization of coal tar hydrogenation technology. As an important component of coal tar, polycyclic aromatic hydrocarbons can be improved by hydrogenation to naphthenic hydrocarbons, which can be used to produce high-density fuels such as aviation kerosene and high value-added blending oils. In addition, hydrogenation is an important intermediate step in the defunctionalization and ring-opening cracking of aromatic compounds, which is of great significance for t...

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 Applications(China)
IPC IPC(8): B01J23/755B01J35/10C07C5/10C07C5/11C07C13/50C07C13/48
CPCB01J23/755B01J35/1019B01J35/1042B01J35/1061C07C5/10C07C5/11B01J2523/00C07C2523/755B01J2523/22B01J2523/31B01J2523/847C07C13/50C07C13/48
Inventor 闫晓亮王倩倩李莎曹敏邱丽李瑞丰
Owner TAIYUAN UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap