Effect of the reaction time on the microstructure and porous texture of carbon materials obtained by chlorination of Ti(C5H5)Cl2

Abstract

Carbon materials have been obtained by the chlorination reaction of Ti(C5H5)Cl2 at 900 °C, varying the reaction time at 30, 60, 90 and 120 min. The average microstructure, studied by X ray powder diffraction, suggest that these materials consist mainly of disordered carbon with low graphitization degree (from 13.5 to 16.5%). These results are in agreement with the Raman data since the D band (at ≈ 1350 cm−1) indicates that disordered carbon networks have appeared. The calculated in-plane correlation length increases from 4.04 to 4.70 nm as the chlorination time increases from 30 to 120 min. The textural analyses reveal adsorption isotherms type 1 with hysteresis H4, microporous areas as high as 855 m2/g and pore volume of 0.55 cm3/g. Additionally, an important contribution of mesoporosity, around 3.6 nm, was also detected.