Phenolic resin as a carbon source for the synthesis of monometallic Mo and bimetallic CoMo carbides via carbothermal reduction route

ABSTRACT

It was the first time that phenolic resin (PR) was used as a carbon source for the synthesis of nanostructured monometallic Mo and bimetallic CoMo carbides via carbothermal reduction route. The results showed that phase-pure β-Mo₂C can be formed under an Ar atmosphere at 900°C or a H₂ atmosphere above 700°C. However, almost pure CoMo carbides (Co₃Mo₃C and Co₆Mo₆C) can be obtained only under a H₂ atmosphere at a low temperature of 630°C for 24 and 48 h, respectively. The role of PR in the preparation process has been investigated and a detailed formation mechanism was proposed based on the experimental results.

GRAPHICAL ABSTRACT

KEYWORDS:

• Phenolic resin
• nanostructured carbides
• carbothermal reduction
• monometallic Mo carbide
• bimetallic CoMo carbide

Acknowledgements

The work was supported by the National Natural Science Foundation of China (No. 21276253) and by talent scientific research fund of LSHU (No. 2013XJJ-018).