Birnessite type manganese oxide catalyst preparation method and application

Abstract

The invention relates to a preparation method of a birnessite type manganese oxide catalyst material and application thereof in charcoal smoke particle catalytic combustion. According to the birnessite type manganese oxide catalyst preparation method disclosed by the invention, the material is a manganese oxide catalyst material with a birnessite type structure, a manganese oxide material is K2Mn4O8, and the manganese oxide catalyst is a catalyst material with the molar ratio of K to Mn to O as 2 to 4 to 8. According to the manganese oxide catalyst, potassium permanganate and glucose which arelow in cost are utilized as raw materials; by means of a simple preparation method of using the glucose as a reducing agent, the birnessite type K2Mn4O8 manganese oxide catalyst with higher oxidationreduction ability is further obtained. The preparation method disclosed by the invention avoids special equipment and severe conditions, and the prepared birnessite type manganese oxide catalyst hasthe advantages of simple preparation technology, strong practicability and easiness in achieving large-scale production.

Description

technical field [0001] The invention belongs to the technical field of preparation of catalyst materials, in particular to a birnessite-type K 2 mn 4 o 8 Preparation method and application of manganese oxide catalyst material. Background technique [0002] Compared with gasoline engines, diesel engines have significant advantages such as higher economy, lower emissions and better durability, so diesel engines have become ideal for automobiles and ships. However, diesel engines emit a large amount of soot particles, causing serious pollution to the environment. At the same time, charcoal smoke particles are the carriers of strong carcinogens, benzopyrene and nitro-condensed aromatic hydrocarbons, which are extremely harmful to human health. Therefore, controlling the emission of soot and particulate matter from diesel engine exhaust is an important task for the catalytic purification of diesel vehicle exhaust, and it has also become one of the key directions of environmen...

AI Technical Summary

Problems solved by technology

However, diesel engines emit a large amount of soot particles, causing serious pollution to the environment

At the same time, charcoal smoke particles are the carriers of strong carcinogens, benzopyrene and nitro-condensed aromatic hydrocarbons, which are extremely harmful to human health.

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