Prethodno priopćenje
Surface properties of carbon black treated by inorganic acids
Ankica RAĐENOVIĆ
; Metalurški fakultet, Sveučilište u Zagrebu, Zagreb
Jadranka MALINA
; Metalurški fakultet, Sveučilište u Zagrebu, Zagreb
Gordana MATIJAŠIĆ
; Fakultet kemijskog inženjerstva i tehnologije Sveučilišta u Zagrebu, Zagreb
Ljerka SLOKAR
; Metalurški fakultet, Sveučilište u Zagrebu, Zagreb
Sažetak
The aim of this work is to investigate the infl uence of chemical treatment by inorganic acids (H2SO4 and HNO3) as oxidizing agents on the surface properties of carbon black. The specifi c surface area, average pore diameter, total pore volume were analyzed by Brunauer-Emmett-Teller (BET) and Barrett-Joyner-Halenda (BJH) methods. Fourier transform infrared spectroscopy (FTIR) analysis was used to identify the changes in the sample surface groups before and after chemical treatment. Microscopic observation was conducted using scanning electron microscopy (SEM) method. The results have shown that chemical treatment by H2SO4 modified the carbon black surface. At the same time there were no significant changes in the specific surface area, average pore diameter, total pore volume after treatment with both acids. The obtained results allow assessment of the use of carbon black as an adsorbent thereby extending the scope of its application.
Ključne riječi
H2SO4; HNO3; carbon black; chemical treatment; surface properties
Hrčak ID:
106069
URI
Datum izdavanja:
19.7.2013.
Posjeta: 1.949 *