Magnetic carbon material supported metal catalyst and method for catalyzing the dechlorination of chlorinated phenol

Abstract

The invention relates to a metal-loaded magnetic carbon material catalyst and a method for catalyzing dechlorination of chlorinated phenol through the metal-loaded magnetic carbon material catalyst, and belongs to the field of organic synthesis and catalytic reaction. The metal-loaded magnetic carbon material catalyst and the method for catalyzing dechlorination of the chlorinated phenol through the catalyst are provided. The metal-loaded magnetic carbon material catalyst is a compound obtained by loading Fe3O4 and active metal elements on a carbon material, wherein the carbon material is activated carbon or carbon nano tubes or graphene, and the active metal elements are one or two of platinum, palladium and rhodium. The preparation steps of the catalyst are simple, reduction is carried out simultaneously in the preparation process of the catalyst, and the reduction step is omitted. The catalyst has terrific hydrodechlorination performance on the chlorinated phenol and is used for dechlorination of the chlorinated phenol, reaction conditions are milder, no inorganic or organic additive is added to a reaction system, and the catalyst can be recycled.

Description

technical field [0001] The invention relates to a metal catalyst supported by a magnetic carbon material and a method for catalyzing the dechlorination of chlorinated phenol, and belongs to the technical field of water treatment and water pollution treatment. Background technique [0002] Chlorinated phenolic organic compounds are a very important class of chemical raw materials and are widely used in the production of dyes, preservatives, herbicides and insecticides. These compounds have strong chemical stability and are difficult to biodegrade in the environment. The extensive use in industrial and agricultural production has caused serious pollution to the environment. Therefore, it is of great practical significance to develop new treatment methods for organic polluted wastewater and study the degradation mechanism to protect the ecological environment and maintain the healthy development of the national economy and society. [0003] Catalytic hydrodechlorination techno...

AI Technical Summary

Problems solved by technology

[0004] However, the high concentration of HCl produced in the existing catalytic chlorinated phenol hydrodechlorination process will be strongly adsorbed on the active center of the catalyst, inhibiting the adsorption and activation of the reaction substrate and hydrogen, resulting in catalyst poisoning and deactivation

At present, most of the research systems need to add a large amount of alkali such as NaOH, triethylamine, etc. as additives to suppress catalyst poisoning, so there are the following problems: one is that adding a large amount of inorganic and organic bases will increase secondary pollution; After adding NaOH and other alkalis to the system, it will react with the HCl produced in the degradation process to form the salt NaCl, and NaCl will also be adsorbed in the pores of the carrier or covered on the surface of the catalyst, thereby hindering the formation of organic chlorides and H 2 The adsorption and activation of the catalyst will lead to the deactivation of the catalyst