Preparation and dehydrogenation methods for perhydrogenated hydrogen storage molecule

A hydrogen storage and molecular technology, applied in chemical instruments and methods, hydrogen, organic chemistry, etc., can solve problems that do not meet the concept and requirements of liquid organic hydrogen storage, and achieve the effect of mild hydrogenation conditions and easy full hydrogenation

Active Publication Date: 2018-08-24
CHINA UNIV OF GEOSCIENCES (WUHAN)
View PDF1 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as the number of aromatic rings increases, the melting and boiling point of fused heterocyclic molecules generally increases with the increase of molecular weight, which makes it unable to exist in liquid for

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
  • Preparation and dehydrogenation methods for perhydrogenated hydrogen storage molecule
  • Preparation and dehydrogenation methods for perhydrogenated hydrogen storage molecule
  • Preparation and dehydrogenation methods for perhydrogenated hydrogen storage molecule

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0030] Embodiments of the present invention provide a method for preparing fully hydrogenated hydrogen storage molecules, comprising the following steps:

[0031] S1. Accurately weigh the quinoline and the catalyst, and add them into the reaction kettle, and the reaction kettle ensures good airtightness;

[0032] The quinoline is preferably 8-methylquinoline, the ratio of the quinoline to the catalyst is 30:1-5:1, sometimes a solvent is needed, the solvent is preferably dioxane, and the catalyst is Rh / Al 2 o 3 , Pd / Al 2 o 3 , Pt / Al 2 o 3 , Pt / C and Ru / Al 2 o 3 one or more of.

[0033] S2. Connect the reaction kettle to the temperature sensing device;

[0034] S3. filling and discharging hydrogen in the reactor, preferably 3-4 times, the partial pressure of filling and discharging hydrogen is preferably 1-2MPa, and the air in the reactor is exhausted, so that the pressure in the reactor is consistent with the atmospheric pressure;

[0035] S4. Set the reaction temperat...

Embodiment 1

[0044] A specific preparation method of fully hydrogenated hydrogen storage molecules, comprising the following steps:

[0045] (1) Weighing: Accurately weigh a certain amount of reactants and catalysts (sometimes solvents are required) and place them in the reactor;

[0046] (2) Install the reaction kettle: first install the parts, in order to ensure the airtightness of the reaction kettle, tighten the screws diagonally, then install the inlet and outlet pipes, agitator, connect the temperature sensing device, and finally install all the valves closure;

[0047] (3) Adjustment: Open the water inlet and outlet pipes, check whether there is water leakage at the screw connection, and adjust the water volume; open the main hydrogen valve, adjust the partial pressure valve to 1-2MPa, and charge and deflate the reactor 3-4 times, The air in the kettle is exhausted, and the pressure in the kettle is consistent with the atmospheric pressure;

[0048] (4) Temperature rise and pressu...

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 preparation method for a perhydrogenated hydrogen storage molecule. The preparation method comprises the following steps: S1, precisely weighing quinoline and a catalyst, andadding quinoline and the catalyst into a reactor; S2, connecting the reactor to a temperature induction device; S3, charging hydrogen into the reactor, exhausting air in the reactor, and keeping thepressure in the reactor consistent with atmospheric pressure; S4, setting the reaction temperature, pressure and rotating speed, carrying out constant-speed heating to the reaction temperature, meanwhile, increasing the pressure to a set value, regulating the rotating speed to a set value, and maintaining the pressure at a set value in a reaction process; S5, when quinoline is completely convertedinto a perhydrogenated product, stopping a reaction, setting the temperature of the temperature induction device at 15-25 DEGC, and waiting for cooling; and S6, carrying out filtration, separation and collection to obtain the perhydrogenated hydrogen storage molecule. The preparation method is mild in hydrogenation condition, easy to realize perhydrogenation, incapable of generating the phenomenon of catalyst poisoning in a hydrogenation process and high in hydrogen storage capacity reaching to 6.54wt%.

Description

technical field [0001] The invention relates to the field of organic liquid hydrogen storage, in particular to a method for preparing and dehydrogenating fully hydrogenated hydrogen storage molecules. Background technique [0002] The introduction of nitrogen heteroatoms into aromatic fused ring compounds can significantly reduce the dehydrogenation temperature of its hydrides, increase the number of aromatic rings in fused ring compounds, and reduce the heat of hydrogenation accordingly, reducing the dehydrogenation temperature of its hydrides to a certain extent . Therefore, we consider two methods of introducing nitrogen heteroatoms into the aromatic ring and increasing the number of aromatic rings to find hydrogen storage molecules in organic liquids with lower dehydrogenation temperatures. However, as the number of aromatic rings increases, the melting and boiling point of condensed heterocyclic molecules generally increases with the increase of molecular weight, which...

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): C07D215/06C01B3/00
CPCC01B3/0015C07D215/06Y02E60/32
Inventor 杨明董媛柯汉忠程寒松
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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