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

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,...

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 photocatalysis. These methods often require high temperature conditions, high energy consumption, and there are safety hazards when dealing with flammable and explosive VOCs.

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