Bimetal-doped plant leaf derived carbon material as well as preparation method and application thereof

Abstract

The invention discloses a bimetal-doped plant leaf derived carbon material and a preparation method and application thereof. The material is prepared by calcining and carbonizing in an inert atmosphere after plant leaves absorb M1 and M2 metal elements, wherein the metal element M1 is Co, Mn or Fe, and the metal element M2 is Ni, Cu or Zn. The invention provides an efficient, green and safe catalyst for synthesizing naphthenic alcohol and naphthenic ketone through selective catalytic oxidation of naphthenic hydrocarbon, the prepared bimetal-doped plant leaf derived carbon material has a good application effect in catalytic oxidation reaction of naphthenic hydrocarbon, and the application method has the advantages comprising high selectivity of naphthenic alcohol and naphthenic ketone, low reaction temperature, few byproducts, small environmental influence, low naphthenic peroxide content, high safety coefficient and the like.

Description

technical field [0001] The invention belongs to the field of industrial catalysis and fine organic synthesis, and specifically relates to a bimetallic-doped plant leaf-derived carbon material and its preparation method and application. Background technique [0002] Catalytic oxidation of naphthenes is a very important conversion process in the chemical industry. The oxidation products cycloalkanol and cycloalkanone are not only important organic solvents, but also important fine chemical intermediates, widely used in pesticides, medicines, dyes, surface Synthesis of fine chemical products such as active agents and resins, especially the production of polyamide fibers nylon-6 and nylon-66. At present, the industrial catalytic oxidation of naphthenes is mainly based on homogeneous Co 2+ or Mn 2+ As a catalyst, oxygen (O 2 ) is an oxidizing agent, which is carried out at 150°C to 170°C. The main problems are that the reaction temperature is high, the conversion rate of the s...

AI Technical Summary

Problems solved by technology

At present, the industrial catalytic oxidation of naphthenes is mainly based on homogeneous Co 2+ or Mn 2+ As a catalyst, oxygen (O 2 ) is an oxidizing agent, which is carried out at 150°C to 170°C. The main problems are that the reaction temperature is high, the conversion rate of the substrate is low, and the selectivity of the target product is poor, especially the formation of aliphatic diacids is difficult to suppress (Applied Catalysis A, General 2019,575:120-131; Catalysis Communications 2019,132:105809)

The main root causes of the above problems are: (1) O 2 Oxidation of cycloalkanes mainly undergoes a disordered free radical diffusion process; (2) the oxidation intermediate product, cycloalkyl hydroperoxide, converts to the target oxidation products cycloalkanol and cycloalkanone through a free radical thermal decomposition path, which increases the inability of the reaction system. controllability, reducing the selectivity of cycloalkyl alcohols and cycloalkyl ketones