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A kind of dinitrogen coordination polymer applicable to nitrogen fixation and reduction and its application

A technology of coordination polymers and multidentate ligands, applied in organic compound/hydride/coordination complex catalysts, chemical/physical process, physical/chemical process catalysts, etc., can solve the difficulties of CPs, coordination polymer Lack of activated nitrogen metal reaction sites and other problems, to achieve the effect of good cycleability and good stability

Active Publication Date: 2021-09-28
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main reason is that conventional coordination polymers lack metal reactive sites for activating nitrogen, and it is very difficult to construct CPs with dinitrogen-containing bridging coordination and good cycle stability.

Method used

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  • A kind of dinitrogen coordination polymer applicable to nitrogen fixation and reduction and its application
  • A kind of dinitrogen coordination polymer applicable to nitrogen fixation and reduction and its application
  • A kind of dinitrogen coordination polymer applicable to nitrogen fixation and reduction and its application

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Experimental program
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Embodiment 1

[0027] The preparation of embodiment 1 dinitrogen coordination polymer of the present invention

[0028] Mix 5 mL of tetrakis(6-isoquinolyl)-tetrathiafulvalene (0.01 mmol) in chloroform and 1.5 mL of LiTCNQ (0.02 mmol) N,N'-dimethylformamide solution, and the upper layer Paved with Zn(NO 3 ) 2 (0.04mmol) methanol solution, under air or nitrogen environment, leave standstill (about two weeks), collect the black lump crystal on the test tube wall, and wash three times with methanol, dry naturally, calculate in L, productive rate is about 70%. {[Zn(L)(N 2 ) 1 / 2 (TCNQ 2 ) 1 / 2 ]·(TCNQ) 1 / 2} n , 3425(m), 3048(w), 2179(s), 2129(w), 1624(s), 1496(w), 1375(m), 1277(m).

[0029] Relevant characterization of dinitrogen coordination polymers:

[0030] (1) Determination of the single crystal structure of the complex

[0031] The complex was subjected to a single crystal diffraction test at a temperature of 150K. Select a suitable crystal and place it on a Bruker D8Venture Photo...

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Abstract

The invention discloses a kind of dinitrogen coordination polymer and its application in nitrogen fixation and activation. The chemical formula of the dinitrogen coordination polymer is {[M(L)(N 2 ) 1 / 2 (TCNQ 2 ) 1 / 2 ]·(TCNQ) 1 / 2} n , where M is a divalent transition metal ion, L is a tetradentate ligand, and n is the degree of polymerization. The dinitrogen coordination polymer of the present invention has a clear dinitrogen anion catalytic reaction site, can directly exchange with external nitrogen (air), and can be reduced and converted into ammonia under light conditions, which is a catalyst for nitrogen activation and transformation. New catalytic materials are provided.

Description

technical field [0001] The invention belongs to the field of nitrogen fixation and reduction catalysis, and specifically relates to a class of dinitrogen coordination polymers and applications thereof. Background technique [0002] The catalytic reaction of Nitrogen Reduction Reaction (NRR) is a kind of key reaction currently studied, because nitrogen (N 2 ) reduction to generate ammonia with the role of agricultural fertilizer or intermediate product hydrazine with industrial product use, which has great research significance. However, since nitrogen molecules are very stable, it is not easy to activate and reduce nitrogen at room temperature except for harsh conditions such as high temperature and high pressure (Haber-Bosch process). [0003] Inspired by the variable metal center and dinitrogen bridge coordination in biological nitrogenase, some research groups at home and abroad are conducting research on molecular catalytic materials for nitrogen fixation and reduction,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G83/00B01J31/22
CPCB01J31/1691B01J31/183B01J2531/26C08G83/008
Inventor 左景林李邦闫桐熊衍金钟
Owner NANJING UNIV