Preparation method of zinc oxide whiskers containing metal nickel and copper

Abstract

The invention relates to a preparation method of zinc oxide whiskers containing metal nickel and copper. The preparation method comprises the following steps: firstly adding water-soluble nickel salts and copper salts into a water solution of ammonium sulfate or sodium acetate, dissolving, then adding ethanol, polyethylene glycol and polyvinyl pyrrolidone as additives, further forming a mixture water solution with tetrapod-like zinc oxide whiskers, heating to the temperature of 70-90 DEG C, then transferring into a pressure reactor, continuously increasing the temperature to 115-160 DEG C, introducing hydrogen while stirring, then introducing ammonia gas or adding ammonia water, or adding a sodium hydroxide solution, enabling nano or superfine metal nickel and copper to be deposited on the tetrapod-like zinc oxide whiskers, and forming a compact metal layer along with the increase in metal deposition; and draining the mixture water solution after reaction, filtering, washing and drying to get the tetrapod-like zinc oxide whiskers loaded with 0.1-50 percent of nickel or copper or the nickel and the copper metals, which can be used as catalytic materials or be used for preparing composite materials.

Description

technical field [0001] The invention relates to a method for preparing zinc oxide whiskers containing metal nickel and copper, and belongs to the technical field of preparation of inorganic materials and catalytic materials. In particular, it relates to loading nanometer, ultrafine or dense metal nickel or copper or nickel-copper layer on the surface of tetrapod-shaped zinc oxide whisker, which is used as a catalytic material or to prepare a composite material. technical background [0002] Petroleum occupies a major position in the world's primary energy consumption structure. Due to the continuous exploitation of petroleum, high-quality petroleum has been greatly reduced. With the continuous growth of global petroleum consumption and the decline of crude oil quality, the heavy and As the degree of inferiority deepens and the sulfur content of crude oil increases, the deep processing and utilization of heavy oil is becoming more and more important. As the consumption of oi...

AI Technical Summary

Problems solved by technology

In the state of roasting or hydrogen reduction, the properties of the carrier catalyst are often changed and the performance of the catalyst is reduced, and the catalytic activity of the supported nickel and copper is low and easy to deactivate; especially the carrier is prone to sintering and is difficult to separate, which changes the performance of the catalyst.

The arc plasma method is an effective method for preparing pure nanometer or ultrafine metal nickel, copper or nickel-copper alloy powder. The high temperature generated by the plasma is used to vaporize the metal and condense it in a protective atmosphere to obtain high-purity nanometer or ultrafine powder. Fine metal nickel, copper or nickel-copper alloy powder; but this method is due to large equipment investment, complicated operation, and low yield; the arc plasma method is not suitable for large specific surface area or low bulk density due to special equipment structure and process requirements When the metal is loaded on the material, when the four needle-shaped zinc oxide whiskers are used as the raw material to prepare the catalyst loaded with nickel and copper, the operation is difficult and economically unreasonable