Preparation process of transition metal boride and uses thereof

摘要

The invention provides a preparation process of transition metal boride, comprising the following steps: A) aluminum is put in a reactor, inert gas is fed into the reactor after evacuation, the reactor is heated up to 700 to 800° C. and then added with dry potassium fluoborate or sodium fluoborate, monomer boron and cryolite are generated by rapid stirring and reaction for 4 to 6 hours, and the molten liquid at the upper layer is sucked out and the monomer boron is obtained by means of separation; and B) the obtained monomer boron is added with transition metal for reaction at the temperature from 1800 to 2200° C. in order to generate corresponding transition metal boride.

主权项

1. A method of preparing transition metal boride comprising the following steps:
A) aluminum is put in a first reactor, an inert gas is fed into the reactor after evacuation, the reactor is heated up to 700 to 800° C. and then added with dry potassium fluoborate or sodium fluoborate, such that monomer boron and cryolite are generated by rapid stirring and reaction for 4 to 6 hours, and the monomer boron is obtained by means of separation; and B) the obtained monomer boron is added with transition metal to a second reactor for reaction at the temperature from 1800 to 2200° C. in order to generate corresponding transition metal boride, the method further comprising
fusing the obtained transition metal boride with a carbon material;then tamping the fused obtained transition metal boride and the carbon material onto a surface of a carbon cathode; andfinally sintering the obtained transition metal boride and the carbon material on the carbon cathode so as to form inert cathode coating material.