To prepare porous carbons with meso-pores

nanometer hydrotalcite (HT）particles were incorporated into vinylidene chloride-methyl acrylate (VDC-MA）copolymer by in-situ suspension polymerization and further melt processing. Porous carbons with meso-pores were obtained by high-temperature carbonization of the VDC-MA copolymer/HT composites and removing of inorganic particles.The composites and the resultant porous carbons with meso-pores were characterized by electron microscope

X-ray diffraction

and nitrogen adsorption/desorption analysis.The results showed that most HT particles were dispersed in the VDC-MA copolymer matrix in nanometer size

when the mass fraction of HT was ≤6.25%.HT was transformed to metal oxides during the carbonization process

which was easy to remove by acid etching and acted as template to form meso-pores.During the carbonization process

micro-pores were also formed due to the thermal degradation of VDC copolymer.When carbonization temperature was lower (600—700℃)

VDC-MA copolymer could not be degraded completely

and the specific surface area and porosity of the resulted carbon were lower.When carbonization temperature was 800℃

the carbons prepared from composites with different HT contents had specific surface areas of about 1000 m2·g-1.The maximum degree of meso-porosity was 26.5% for the carbon prepared from VDC-MA copolymer/HT composite with 6.25%（mass） HT.