Unlock instant, AI-driven research and patent intelligence for your innovation.

Binuclear cobalt complex as well as preparation method and application thereof

A technology of cobalt complexes and chemical formulas, applied in the field of binuclear cobalt complexes and their preparation, to achieve significant catalytic effects, high catalytic activity and selectivity

Active Publication Date: 2022-02-11
GUANGXI NORMAL UNIV
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although in recent years in CO 2 Great progress has been made in fixation and conversion, but how to fix and convert CO more efficiently 2 , remains one of the challenging issues
So far, no cobalt complexes with 2,6-bis((bis(pyridin-2-ylmethyl)amino)methyl)-4-methoxyphenol (Hbpmp) as ligand have been used in photocatalytic CO 2 Relevant reports on catalysts in reduction

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
  • Binuclear cobalt complex as well as preparation method and application thereof
  • Binuclear cobalt complex as well as preparation method and application thereof
  • Binuclear cobalt complex as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Take 2,6-bis((bis(pyridin-2-ylmethyl)amino)methyl)-4-methoxyphenol (0.055g, 0.01mmol) and Co(OAc) 2 4H 2 O (0.0498g, 0.02mmol) was placed in a 10mL round bottom flask, and 5mL of a mixed solvent composed of methanol and ethanol (the volume ratio of methanol and ethanol was 1:1) was added, and the pH of the system was adjusted to 8.5 with triethylamine, Afterwards, the reaction was refluxed in a water bath at 70°C for 8 hours. After the reaction was stopped, the temperature was slowly lowered to room temperature. Diethyl ether equivalent to twice the volume of the reaction solution was added to the reaction solution, and a dark brown powder was precipitated. The powder was collected and dried. Yield is 75% (0.064g, based on Co 2+ ).

[0029] The product obtained in this embodiment is characterized:

[0030] (1) Mass spectrum, its spectrum is as follows figure 1 shown.

[0031] Anion peaks showed a strong peak at 781 according to high resolution electrospray ionizati...

Embodiment 2

[0043] Repeat Example 1, except that the mixed solvent is replaced by ethanol, the pH of the system is adjusted to 7.5 with triethylamine, and the reaction is carried out in a water bath at 50°C.

[0044] The result was a dark brown powdery solid. Yield is 69% (0.059g, based on Co 2+ ).

[0045] The product obtained in this embodiment is characterized by the same method as in Example 1, and it is determined that the powdery solid obtained is the target product [(C 33 h 33 N 6 o 2 )Co 2 (CH 3 COO) 2 ](CH 3 COO)·H 2 O.

Embodiment 3

[0047] Example 1 was repeated, except that the mixed solvent was replaced with methanol, the pH of the system was adjusted to 9.5 with triethylamine, and the reaction was carried out in a water bath at 80°C.

[0048] The result was a dark brown powdery solid. Yield is 79% (0.067g, based on Co 2+ ).

[0049] The product obtained in this embodiment is characterized by the same method as in Example 1, and it is determined that the powdery solid obtained is the target product [(C 33 h 33 N 6 o 2 )Co 2 (CH 3 COO) 2 ](CH 3 COO)·H 2 O.

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 binuclear cobalt complex as well as a preparation method and application thereof. The chemical formula of the binuclear cobalt complex is [(C33H33N6O2) Co2 (CH3COO) 2] (CH3COO).H2O. The preparation method of the binuclear cobalt complex comprises the following steps: putting 2, 6-bis ((bis (pyridine-2-yl methyl) amino) methyl)-4-methoxyphenol and cobaltous acetate tetrahydrate into methanol and / or ethanol, adjusting the pH value of a system to be alkaline, reacting under a heating condition, cooling reaction liquid, and adding an ether solvent to separate out a product, thereby obtaining the binuclear cobalt complex. Experimental results of the applicant show that the complex as a homogeneous molecular catalyst shows relatively high catalytic activity and selectivity in CO2 reduction, and has a remarkable catalytic effect.

Description

technical field [0001] The invention relates to metal complexes, in particular to a binuclear cobalt complex and its preparation method and application. Background technique [0002] As we all know, CO 2 It is the chief culprit of the greenhouse effect. The increase in global temperature will continue to deteriorate the living environment of human beings, reduce the quality of life, and cause health hazards and economic losses. Experts point out that if no action is taken on global warming, it will cause serious public health problems. Therefore, using green and environmentally friendly solar energy to convert CO 2 It is of great significance to convert them into high value-added energy substances or chemical raw materials. [0003] Due to CO 2 The C=O bond in the product can reach 803KJ / mol, and the high bond energy determines the high stability of its properties. It is difficult to produce a carbon-containing reduction product under normal temperature and pressure. At...

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): C07F15/06B01J31/22C01B32/40
CPCC07F15/065B01J31/2243C01B32/40C07B2200/13B01J2531/845B01J35/39
Inventor 刘冬成苏超奉琴韦方沙胡焕成陈自卢
Owner GUANGXI NORMAL UNIV