Preparation method of catalyst for formaldehyde degradation

Abstract

The invention discloses a preparation method of a catalyst for formaldehyde degradation by recycling waste carbon batteries. The method comprises the following steps: (1) removing the waste carbon battery in a glove box in an argon atmosphere, collecting the obtained positive electrode material, and conducting grinding and crushing; (2) weighing the powder, adding deionized water, conducting stirring, conducting cleaning, conducting filtering until the pH value of filtrate is 7-8, and collecting cleaned and filtered black powder; and (3) putting the powder into an oven at the temperature of 60-150 DEG C, conducting drying for 12-24 hours, mixing the collected solid with a sulfuric acid solution, conducting heating and stirring for 5-15 hours under the condition of oil bath at the temperature of 60-120 DEG C at the stirring speed of 200-300 revolutions per minute, then conducting filtering to obtain a solid, washing the solid with deionized water to be neutral, and finally putting the solid into an oven at the temperature of 60 DEG C, and conducting drying for 12 hours, so as to obtain a sample which can be directly used for a formaldehyde degradation catalyst. The method is simple in steps and easy to operate, and the prepared formaldehyde degradation catalyst has high formaldehyde degradation efficiency and good stability.

Description

Technical field [0001] The present invention relates to a process for recycling of waste material carbaldehyde cathode of a battery using a carbon catalyst degradation, belonging to the scope of the preparation of inorganic materials. Background technique [0002] Formaldehyde is volatile organic compounds VOCs (Volatile Organic Compounds) in the main one of the highest of the two toxic chemicals in China priority control list. Formaldehyde has become one of the most important indoor air pollutants not only affect the body's upper respiratory tract and lungs; cause liver function, immune function, nervous system abnormalities; resulting in loss of function of the central part; and prolonged exposure to high concentrations of formaldehyde can cause a variety of cancer. In June 2004, IARC carcinogens formaldehyde rise from second-class to a class of carcinogens. Indoor formaldehyde release process up to 3 to 15 years, China on March 1, 2003 implementation of the "indoor air quality...

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the problems that the current positive electrode recovery method of waste carbon batteries requires complex recovery procedures, and the waste positive electrode materials have potential secondary pollution and other disadvantages; while commercially available formaldehyde degradation catalysts have high cost, complicated operation, and low degradation efficiency. The invention provides a method for preparing a formaldehyde degradation catalyst by recycling waste carbon batteries

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