Preparation method of nickel-loaded activated carbon with large specific surface area

Abstract

The invention relates to the field of activated carbon materials, and in particular, relates to a preparation method of nickel-loaded activated carbon with a large specific surface area. The preparation method comprises the specific steps: a, putting poly(4-styrenesulfonic acid-co-maleic acid) sodium salt, a nickel chloride solution and an NH4OH solution which are blended in proportion into an oil bath pan to be subjected to oil bath, then taking out and drying, wherein the temperature of the oil bath pan is 200 DEG C, and the oil bath time is 2-6 hours; and b, drying and then putting into a tubular furnace, wherein the pyrolysis time is 30-120 minutes. The nickel-loaded activated carbon has a large specific surface area, a metal catalyst can be well dispersed, exposure of active sites of the catalyst is increased, and the catalytic efficiency is improved; the activated carbon material is stable and can effectively evaluate the intrinsic activity of the metal catalyst as a catalyst carrier; and the carbon source of the activated carbon is wide, and the activated carbon can be prepared from biomass, petroleum processed products and the like mainly containing carbon elements through pyrolysis.

Description

technical field [0001] The invention relates to the field of activated carbon materials, in particular to a method for preparing nickel-loaded activated carbon with a large specific surface area. Background technique [0002] With the gradual reduction of fossil fuels and the intensification of environmental crisis, the preparation of clean hydrogen by electrochemical hydrogen evolution has become an important choice to replace fossil energy. Currently, small-scale commercial catalyst materials are mainly noble metal-based materials, such as Pt-based materials. Large-scale commercial use is limited by the scarcity and high cost of precious metals. At present, it is urgent to find a low-cost metal catalyst to replace the noble metal catalyst, reduce the cost, and realize large-scale commercial production. However, pure metal catalysts generally have poor dispersion of metal particles, resulting in low catalytic activity, and supported catalysts can solve this problem well. ...

AI Technical Summary

Problems solved by technology

Due to the complex composition of biomass activated carbon, the pretreatment of raw materials is difficult, and it is difficult to prepare an activated carbon catalyst with stable and efficient performance. The preparation of activated carbon from petroleum processed products causes serious environmental pollution. Therefore, the existing activated carbon cannot be used as an ideal activated carbon-supported catalyst material.