Chinese Name: cobalt borate

English Name: cobalt border

Chemical formula: cob

Melting point: 1460 ° C

Density: 7.250

Color: Black Gray

Appearance: gray black powder

Density: 8.1G /cm3

Molecular weight: 69.74

EINECS No.: 235-722-7

Purpose:

1. Amorphous Co-B is a new type of material with short-range order and

long-range disorder structure, which belongs to metastable state in

thermodynamics. At present, Co-B powder has been widely used as

catalyst for hydrogenation reaction and on-site hydrogen production

reaction because of its good catalytic activity, hydrogenation activity

and hydrogenolysis activity. The carrier can disperse the catalyst

componentson the surface of the carrier, obtain a higher specific surface

area,and improve the catalytic efficiency of active components per unit

mass. Therefore, on the one hand, the carrier needs to have appropriate

shape and mechanical strength, on the other hand, it also needs to have

good inertia, that is, the carrier cannot react with the catalyst or raw materials.

Obviously, using crystalline Co-B powder with porous structure as the support

of amorphous Co-B catalyst has more advantages in chemical compatibility

than other supports.

2. Bismuth vanadate film photoelectric anode modified by cobalt borate is used

 for Photoelectrochemical decomposition of water The photocurrent of bismuth 

vanadate film photoanode modified by cobalt borate is 23 times higher than that 

of single BiVO film

3. Cobalt borate (co2b) can be used as a catalyst for sodium borohydride to 

generate hydrogen in proton exchange membrane fuel cells.

4. It can be used for high corrosion resistance and wear resistance coating on 

the surface of metal parts.

Production process:

1. A new method for preparing crystalline transition metal boride cob by

solid-state reaction of cobalt oxide or hydroxide and boron hydride. The

method of the invention: after the oxide or hydroxide of cobalt and boron

hydride are mixed evenly according to the molar ratio of 1:1-1:1.5, the

tablet is pressed under the pressure of 15-20mpa, and the insulation is

maintained for 6-24h under the protection of 400-800 degrees argon, and

then it is slowly cooled to room temperature; The obtained product is

fully washed with deionized water and ethanol and vacuum dried to obtain

the product cob.

2. After mixing element boron and element cobalt in proportion, it is formed

under pressure and heated in a heating furnace.

Packaging and storage: sealed and stored in a dry and cool environment, not

exposed to the air, so as to prevent oxidative agglomeration caused by moisture, 

which will affect the dispersion performance and use effect