Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Synthesis method of cycloalkane compounds

A synthesis method and technology of cycloalkane, which is applied in the field of synthesis of cycloalkane compounds, can solve problems such as easy agglomeration, harsh requirements for raw material impurities, harsh operating conditions, etc., and achieve suitable storage and transportation, good catalytic performance, and good repeatability sexual effect

Pending Publication Date: 2020-07-31
CHINA PETROLEUM & CHEM CORP +1
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although precious metals have these advantages, the price and cost of precious metal catalysts are too high, the requirements for raw material impurities are strict, and carbon deposition is easy
Metal sulfide catalysts have a long life, but low activity, harsh operating conditions, and require high temperature and pressure
The supported nickel catalyst is prone to agglomeration during the preparation process, the catalytic efficiency is low, and side reactions are prone to occur

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
  • Synthesis method of cycloalkane compounds
  • Synthesis method of cycloalkane compounds
  • Synthesis method of cycloalkane compounds

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0058] The present invention provides a kind of synthetic method of cycloalkane compound, comprising:

[0059] A carbon-coated nickel nanocomposite material containing alkaline earth metal is used as a catalyst, and after the catalyst is mixed with an aromatic hydrocarbon compound in a solvent, a hydrogenation reduction reaction is carried out under a hydrogen atmosphere; the chemical reaction equation is exemplified as follows:

[0060]

[0061] Wherein, the nanocomposite material has a core-shell structure with a shell and an inner core, the shell is a graphitized carbon layer containing alkaline earth metal and oxygen, and the inner core is nickel nanoparticles.

[0062] In some embodiments, the aromatic ring of the aromatic hydrocarbon compound also contains a substituent R, and the substituent is selected from C 1-20 One or more of the alkyl, cycloalkyl and aryl groups. The above-mentioned substitutions may be mono-substituted or poly-substituted, including but not li...

preparation example 1

[0103] (1) Weigh 10g of nickel acetate and 10g of citric acid into a beaker containing 30mL of deionized water, stir at 70°C to obtain a homogeneous solution, continue heating and evaporate to dryness, and obtain a solid precursor.

[0104] (2) Place the solid precursor obtained in step (1) in a porcelain boat, then place the porcelain boat in the constant temperature zone of the tube furnace, feed nitrogen gas with a flow rate of 100mL / min, and set the temperature at a rate of 5°C / min. Raise the temperature to 650°C, stop the heating after keeping the temperature for 2 hours, and cool to room temperature under a nitrogen atmosphere to obtain a carbon-coated nickel material.

[0105] (3) Weigh 2g of the material obtained in step (2), add 4ml of an aqueous solution containing 0.1528g of magnesium nitrate, soak at room temperature for 24h, and then dry the product at 120°C.

[0106] (4) The dried material obtained in step (3) is placed in a porcelain boat, and then the porcelain...

preparation example 2

[0112] (1) Weigh 10g of nickel acetate and 20g of citric acid into a beaker containing 50mL of deionized water, stir at 80°C to obtain a homogeneous solution, continue heating and evaporate to dryness, and obtain a solid precursor.

[0113] (2) The solid obtained in step (1) is placed in a porcelain boat, and then the porcelain boat is placed in the constant temperature zone of the tube furnace, and the nitrogen gas with a flow rate of 150mL / min is fed into it, and the temperature is raised to 600°C, keep the temperature constant for 2 hours, stop heating, and cool to room temperature under a nitrogen atmosphere to obtain a carbon-coated nickel material.

[0114] (3) Weigh 2 g of the carbon-coated nickel material obtained in step (2), add 4 mL of an aqueous magnesium nitrate solution containing 0.8589 g, soak at room temperature for 24 h, and then dry the product at 120° C.

[0115] (4) The dried material obtained in step (3) is placed in a porcelain boat, and then the porcela...

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
thicknessaaaaaaaaaa
particle diameteraaaaaaaaaa
specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention provides a synthesis method of cycloalkane compounds. The synthesis method comprises the following steps: taking a carbon-coated nickel nano composite material containing alkaline-earthmetals as a catalyst, and catalyzing a hydrogenation reduction reaction of aromatic hydrocarbon compounds in a hydrogen atmosphere; wherein the nano composite material contains a core-shell structurewith a shell layer and an inner core, the shell layer is a graphitized carbon layer containing alkaline-earth metals and oxygen, and the inner core is nickel nano particles. According to the method, the nano composite material is used as a catalyst; a carbon material and nickel nano particles generate a synergistic effect and a good catalytic effect, the alkaline-earth metals of the shell layer further synergistically improve the catalytic performance of the nano composite material, and the catalyst is used for hydrogenation reduction of aromatic hydrocarbon compounds to synthesize cycloalkanecompounds, and has excellent activity, selectivity and safety.

Description

technical field [0001] The invention belongs to the field of catalysis, and in particular relates to a method for synthesizing cycloalkane compounds. Background technique [0002] Hydrogenation reaction has a wide range of applications in petrochemical production, and it is of great significance to obtain saturated cycloalkanes from aromatics through catalytic hydrogenation. For example, converting aromatics in fuel oil into saturated naphthenes by catalytic hydrogenation can improve the stability of fuel oil and reduce environmental pollution caused by incomplete combustion of aromatics. Therefore, cycloalkanes obtained by catalytic hydrogenation of aromatics have important economic value and social significance. [0003] At present, suitable catalysts for the hydrogenation of aromatics are mainly supported noble metal catalysts, metal sulfide catalysts and nickel-based catalysts, such as platinum (Pt), palladium (Pd) and rhodium (Rh) and other noble metal catalysts and ni...

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): C07C13/18C07C5/10B01J23/78B01J35/10
CPCC07C5/10B01J23/78C07C2601/14C07C2523/78B01J35/398B01J35/23B01J35/33B01J35/615B01J35/633B01J35/69B01J35/647C07C13/18
Inventor 宗明生谢婧新荣峻峰吴耿煌于鹏林伟国纪洪波
Owner CHINA PETROLEUM & CHEM CORP
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
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