Preparation method of precious metal-loaded porous organic framework atomic-scale catalyst capable of catalytic degradation of VOCs at normal temperature

An organic framework, catalytic degradation technology, applied in organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve problems such as hidden dangers, safety of VOCs, high energy consumption, etc. Achieve enhanced safety, easy regulation of active sites, and high catalytic performance

Active Publication Date: 2019-07-19
TIANJIN UNIV
View PDF5 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The currently commonly used VOCs destruction methods in my country include catalytic incineration, low-temperature plasma, and ultraviolet photocataly...

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 method of precious metal-loaded porous organic framework atomic-scale catalyst capable of catalytic degradation of VOCs at normal temperature

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0022] The preparation method of the noble metal-loaded porous organic framework atomic-level catalyst that can be used for catalytic degradation of VOCs at room temperature of the present invention comprises the following steps:

[0023] (a) Prepare the carrier:

[0024] (1) Add triethylamine into the dichloromethane solution, stir evenly to obtain the first solution, and the volume ratio of triethylamine to dichloromethane is 1:10.

[0025] (2) Add 2,6-diaminopyridine and 1,3,5-benzenetricarbonyl chloride in a molar ratio of 3:1 to the first solution and stir to obtain a second solution; the 2, The volume ratio of the total volume of 6-diaminopyridine and 1,3,5-benzenetricarboxylic acid chloride to the first solution is 1:2.

[0026] (3) Put the second solution in an oil bath and react at 20-90° C. for 2-8 hours to generate a porous organic framework containing pyridine-amide functional groups.

[0027] Preferably, the temperature of the oil bath is 40-60°C, and the reacti...

Embodiment 1

[0038] (a) Preparation of carrier

[0039] (1) Add triethylamine into the dichloromethane solution, stir evenly to obtain the first solution, the volume ratio of triethylamine and dichloromethane is 1:10.

[0040] (2) Add 2,6-diaminopyridine and 1,3,5-benzenetricarboxylic acid chloride with a molar ratio of 3:1 into the first solution and stir to obtain a second solution; 2,6-diaminopyridine The volume ratio of the total volume of aminopyridine and 1,3,5-benzenetricarboxylic acid chloride to the first solution is 1:2.

[0041] (3) The second solution was placed in an oil bath and reacted at 20° C. for 8 hours to generate a porous organic framework containing pyridine-amide functional groups.

[0042] (b) Impregnated loaded Pt metal

[0043] (1) The porous organic framework is completely impregnated into 0.05mol / L H 2 PtCl 6 The solution was subjected to ultrasonic treatment for 1 h, and then stood at 10 °C for 6 h to obtain a porous organic framework loaded with Pt metal. ...

Embodiment 2

[0050] (a) Prepare the carrier:

[0051] (1) Add triethylamine into the dichloromethane solution, stir evenly to obtain the first solution, the volume ratio of triethylamine and dichloromethane is 1:10.

[0052](2) Add 2,6-diaminopyridine and 1,3,5-benzenetricarboxylic acid chloride with a molar ratio of 3:1 into the first solution and stir to obtain a second solution; 2,6-diaminopyridine The volume ratio of the total volume of aminopyridine and 1,3,5-benzenetricarboxylic acid chloride to the first solution is 1:2.

[0053] (3) The second solution was placed in an oil bath and reacted at 40° C. for 6 hours to generate a porous organic framework containing pyridine-amide functional groups.

[0054] (b) Impregnated loaded Pt metal

[0055] (1) The porous organic framework is completely impregnated into 0.2mol / L H 2 PtCl 6 The solution was subjected to ultrasonic treatment for 1.5 h, and then stood at 20° C. for 8 h to obtain a porous organic framework loaded with Pt metal. ...

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 of a precious metal-loaded porous organic framework atomic-scale catalyst for catalytic degradation of VOCs at normal temperature. The preparation method comprises the following steps: (a) preparing a carrier: adding 2,6-diaminopyridine and 1,3,5-benzenetricarbonyl trichloride into a dichloromethane solution containing triethylamine, conducting uniformstirring, putting the formed solution into an oil bath pot, and conducting heating for reaction to obtain a porous organic framework containing a pyridine-amide functional group; (b) conducting dipping for loading a precious metal, specifically, completely dipping the pyridine-amide porous organic framework into a precious metal salt solution, carrying out ultrasonic treatment and standing, then adding a sodium borohydride solution to reduce the precious metal, and conducting washing and drying to obtain a precious metal-loaded pyridine-amide porous organic framework atomic-scale active site catalyst semi-finished product; and (c) conducting calcining, specifically calcining the semi-finished product in a muffle furnace to obtain a finished product. The catalyst is high in atom dispersityand can form atomic-scale active sites, so that the catalytic efficiency is greatly improved.

Description

technical field [0001] The invention relates to a preparation method of a porous organic framework atomic-level catalyst, in particular to a preparation method of a porous organic framework atomic-level catalyst loaded with noble metals that can be used for catalytic degradation of VOCs at room temperature. Background technique [0002] Volatile organic compounds (VOCs) are an important class of air pollutants, defined by the World Health Organization as organic compounds with a boiling point of 50-260°C and a saturated vapor pressure of more than 133Pa at room temperature, including alkanes, alkenes, aromatics and their derivatives, Alcohols, aldehydes and ketones, amines and amides, acids and anhydrides, etc. VOCs are an important class of air pollutants. [0003] The currently commonly used VOCs destruction methods in my country include catalytic incineration, low-temperature plasma, and ultraviolet photocatalysis. These methods often require high temperature conditions,...

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): B01J31/28B01D53/86B01D53/44
CPCB01D53/8687B01D2257/708B01J31/28
Inventor 丁辉赵昊天
Owner TIANJIN UNIV
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