Highly Porous Expanded Graphite: Thermal Shock vs. Programmable Heating.

ABSTRACT: Highly porous expanded graphite was synthesized by the programmable heating technique using heating with a constant rate (20 °C/min) from room temperature to 400-700 °C. The samples obtained were analyzed by scanning electron microscopy, energy-dispersive spectroscopy, low-temperature nitrogen adsorption, X-ray photoelectron spectroscopy, Raman spectroscopy, thermogravimetry, and differential scanning calorimetry. A comparison between programmable heating and thermal shock as methods of producing expanded graphite showed efficiency of the first one at a temperature 400 °C, and the surface area reached 699 and 184 m²/g, respectively. The proposed technique made it possible to obtain a relatively higher yield of expanded graphite (78-90%) from intercalated graphite. The experiment

SUBMITTER: Bannov AG 

PROVIDER: S-EPMC8708924 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature