Application of a mononuclear nickel complex containing mnt ligand as a catalyst for electrocatalytic hydrogen production

A nickel complex, electrocatalysis technology, applied in the direction of organic compound/hydride/coordination complex catalyst, physical/chemical process catalyst, nickel organic compound, etc., can solve the problem of less research on catalytic hydrogen production performance, achieve synthesis The method is simple, the synthesis yield is high, and the reaction conditions are mild.

Active Publication Date: 2020-06-23
SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] N-substituted bis(diphenylphosphino)ammonia (R-PNP) is a novel class of aza-chelate bisphosphine ligands, which can be used for mixed ligands by introducing thiolate or dithiolate ligands. Synthetic and structural studies of the mononuclearnickel(II)ethanedithiolate complexes with chelating N-substituted bis(diphenylphosphanyl)amine. Polyhedron , 2015,85:482-487; X.F.Liu.Condensation reactions of the mononuclear nickel(II)complexes[RN(PPh 2 ) 2 ]NiCl 2 with 1,2-ethanedithiol or 1,3-propanedithiol. Inorg.Chim.Acta ,2014,421:10-17; L.C.Song,J.P. Li,Z.J.Xie,et al.Synthesis,structural characterization,and electrochemical properties of dinuclear Ni / Mn model complexes for active siteof[NiFe]-hydrogenases. Inorg. Chem. ,2013,52(19):11618-11626), but there are relatively few studies on the catalytic hydrogen production performance of these metal complexes. Gan et al. found that: The mononuclear nickel complex (dppe)Ni(bdt) of the dithiophenate ligand has no electrocatalytic hydrogen production activity in either acetic acid or p-toluenesulfonic acid medium (L.Gan, T.L.Groy, P.Tarakeshwar, et al, A nickel phsphine complex as fast and efficient hydrogen production catalyst. J.Am.Chem.Soc. , 2015, 137(3), 1109-1115)

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
  • Application of a mononuclear nickel complex containing mnt ligand as a catalyst for electrocatalytic hydrogen production
  • Application of a mononuclear nickel complex containing mnt ligand as a catalyst for electrocatalytic hydrogen production
  • Application of a mononuclear nickel complex containing mnt ligand as a catalyst for electrocatalytic hydrogen production

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A kind of mononuclear nickel complex containing N-substituted bis (diphenylphosphino) ammonia and maleonitrile dithiolate ligand, the chemical formula of the mononuclear nickel complex is (CH 3 O(CH 2 ) 3 N(PPh 2 ) 2 )Ni(mnt), the reaction equation is as follows:

[0030]

[0031] The synthetic method of described mononuclear nickel complex containing N-substituted bis(diphenylphosphino)ammonia and maleonitrile dithiolate ligand is as follows:

[0032] In a round bottom flask equipped with a magnetic stir bar, 0.1860 g Na 2 mnt (1mmol), 0.5870g (CH 3 O(CH 2 ) 3 N(PPh 2 ) 2 )NiCl 2 (1mmol) and 20mL of dichloromethane were mixed, stirred and reacted at room temperature for 3 hours to obtain an orange-red solution. Wash with 2 x 20 mL water to remove NaCl, anhydrous MgSO 4 Drying, rotary evaporator decompression removes organic solvent, dissolves with appropriate amount of dichloromethane, uses the dichloromethane:methanol that volume ratio is 10:1 to carry ...

Embodiment 2

[0034] A kind of mononuclear nickel complex containing N-substituted bis (diphenylphosphino) ammonia and maleonitrile dithiolate ligand, the chemical formula of the mononuclear nickel complex is (CH 3 S(CH 2 ) 3 N(PPh 2 ) 2 )Ni(mnt), its chemical structure is as follows:

[0035]

[0036] The synthetic method of described mononuclear nickel complex containing N-substituted bis(diphenylphosphino)ammonia and maleonitrile dithiolate ligand is as follows:

[0037] In a round bottom flask equipped with a magnetic stir bar, 0.1860 g Na 2 mnt (1mmol), 0.6030g (CH 3 S(CH 2 ) 3 N(PPh 2 ) 2 )NiCl 2 (1mmol) and 20mL of dichloromethane were mixed, stirred and reacted at room temperature for 3 hours to obtain an orange-red solution. Wash with 2 x 20 mL water to remove NaCl, anhydrous MgSO 4 Dry, remove the organic solvent under reduced pressure with a rotary evaporator, dissolve with an appropriate amount of dichloromethane, use a 20:1 mixture of dichloromethane and methanol...

Embodiment 3

[0039] A kind of mononuclear nickel complex containing N-substituted bis (diphenylphosphino) ammonia and maleonitrile dithiolate ligand, the chemical formula of the mononuclear nickel complex is (CH 3 CHPhN (PPh 2 ) 2 )Ni(mnt), its chemical structure is as follows:

[0040]

[0041] The synthetic method of described mononuclear nickel complex containing N-substituted bis(diphenylphosphino)ammonia and maleonitrile dithiolate ligand is as follows:

[0042] In a round bottom flask equipped with a magnetic stir bar, 0.1860 g Na 2 mnt (1mmol), 0.6190g (CH 3 CHPhN (PPh 2 ) 2 )NiCl 2 (1 mmol) and 20 mL of chloroform were mixed, stirred and reacted at room temperature for 3 hours to obtain an orange-red solution. Wash with 2 x 20 mL water to remove NaCl, anhydrous MgSO 4 Dry, remove the organic solvent under reduced pressure with a rotary evaporator, dissolve with an appropriate amount of dichloromethane, use a 10:1 mixture of dichloromethane and methanol as a developing so...

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 belongs to the field of catalyst preparation, and particularly relates to application of a mononuclear nickel complex containing mnt ligand as electro-catalysis hydrogen production catalyst. The electro-catalysis hydrogen production catalyst is the mononuclear nickel complex which contains the N-substituted bi(diphenylphosphine) ammonia(R-PNP) and malononitrile bithiolate (mnt2-) ligand, and the chemical structure of the electro-catalysis hydrogen production catalyst is disclosed in the following diagram. The nickel complex shows high electro-catalysis hydrogen production activity in acid media. The synthesis method for the mononuclear nickel complex has the advantages of simpleness, moderate reaction condition, high productivity and the like, can be suitable for the synthesis of series of mononuclear nickel complex, with catalysis hydrogen production performance, containing N-substituted bi(diphenylphosphine) ammonia and malononitrile bithiolate, and has a potential application value on an aspect of hydrogen energy development.

Description

technical field [0001] The present invention relates to the technical field of catalyst preparation, specifically a kind of N-substituted bis (diphenylphosphino) ammonia (R-PNP) and maleonitrile dithiolate (mnt 2- ) ligand and metal nickel atom linking a kind of metal complex as the application of electrocatalytic hydrogen production catalyst. Background technique [0002] With the rapid development of social economy, the energy crisis has become increasingly prominent, so it is becoming more and more important to develop a catalyst with high-efficiency hydrogen production activity. As we all know, the developed natural resources on the earth are basically non-renewable and often polluting resources. Hydrogen energy has the characteristics of high combustion calorific value and no pollution, which makes the development of hydrogen energy particularly highly valued by governments and scientists of various countries. Hydrogen production pathways mainly include fossil fuel cr...

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): C07F15/04B01J31/22C25B1/04C25B11/06
CPCB01J31/226B01J35/0033B01J2531/847C07F15/045C25B1/04C25B11/04Y02E60/36
Inventor 谢斌张栋梁邓成龙何林芯胡殊鹏吴宇牟文玉冯健申
Owner SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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