METHOD FOR PREPARING NANO-NICKEL POWDER WITH MICROCHANNEL REACTOR

摘要

A method for preparing nano-nickel powder with microchannel reactor is provided. The method comprises the following steps: preparing the alcoholic solution of soluble nickel salt and the alcoholic solution of alkaliferous hydrazine hydrate; injecting the two solutions into a heated micromixer according to a certain molar ratio of hydrazine hydrate/nickel; directly injecting the mixed solution into the heated microchannel reactor; separating and washing the products and then storing them without air. During the preparation process, solvents partially vaporize to form a flowing form of gas phase and liquid phase section flows, which can eliminate the blockage in the microchannel reactor during the process of synthesizing the nano granules, and thereby the nano-nickel granules can be continuously synthesized. Furthermore, the preparation process has the advantages of no addition of any surfactants such as dispersing agents, low cost of raw materials, simple operation, uniform nano-nickel granule size, good dispersibility and the like.