Ar AND CO_2 PHYSISORPTION ON C_(60): EXPERIMENTAL AND COMPUTER SIMULATION STUDY

摘要

In a previous paper the surface of a well-crystallized sample of C_(60) fullerene has been characterized by means of nitrogen physisorption. Simulated adsorption isotherms have been compared with the experimental ones and the agreement was excellent. The obtained results allowed the identification of three adsorption sites on the C_(60) surface. The first site is the cavity delimited by four C_(60) molecules; the second site is the region between two Ceo units and the third site is located on top of the C_(60) molecules. We also explained the results obtained by other authors while studying the adsorption of hydrocarbons by inverse gas chromatography. In this paper we present experimental and simulation results of argon (77.4 K) and carbon dioxide (195.5 K) physisorption on the same sample of C_(60).