Improving the Micropore Capacity of Activated Carbon by Preparation under a High Magnetic Field of 10 T.

ABSTRACT: The influence of an applied magnetic field on the formation of carbon materials from coal tar pitch is investigated. Under an applied magnetic field, crystallites in a mesophase resembling liquid crystals are magnetically oriented during the carbonization process. Compared with that under a nonmagnetic field, carbonized coal tar pitch under a strong magnetic field of 10 T, generated by a superconducting magnet, has a highly oriented structure of carbon crystallites. The orientation of samples prepared under 2 T, which can easily be supplied by an electromagnet, was insufficient. Activation by potassium hydroxide is effective for affording a precursor for activated carbon. The activated carbon obtained under a strong magnetic field has a unique adsorption ability, which arises from its incr

SUBMITTER: Hamasaki A 

PROVIDER: S-EPMC6522527 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature