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Površinska svojstva čađe obrađene anorganskim kiselinama

Authors :
Ankica RAĐENOVIĆ
Jadranka MALINA
Gordana MATIJAŠIĆ
Ljerka SLOKAR
Source :
Polimeri : časopis za plastiku i gumu, Volume 34, Issue 1
Publication Year :
2013
Publisher :
Society of Plastics and Rubber Engineers, 2013.

Abstract

Cilj je ovog rada ispitati utjecaj kemijske obrade čađe anorganskim oksidirajućim kiselinama (H2SO4 i HNO3) na njezina površinska svojstva. Specifična površina, prosječni promjer pora i raspodjela veličina pora analizirani su metodama Brunauer-Emmett-Teller (BET) i Barrett-Joyner-Halenda (BJH). Mikroskopska opažanja provedena su pretražnom elektronskom mikroskopijom (SEM). Za identifi ciranje površinskih skupina prije i nakon obrade čađe upotrijebljena je Fourierova pretvorna infracrvena spektrometrija (FTIR). Rezultati su pokazali da je kemijska obrada s H2SO4 modifi cirala površinu čađe. Istodobno, nisu uočene znatnije promjene specifi čne površine, veličine pora i raspodjele veličina pora nakon obrade objema kiselinama. Dobiveni rezultati omogućuju procjenu upotrebe čađe kao adsorbenta, čime se proširuje područje njezine primjene.<br />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.

Details

Language :
Croatian
ISSN :
18460828 and 03511871
Volume :
34
Issue :
1
Database :
OpenAIRE
Journal :
Polimeri : časopis za plastiku i gumu
Accession number :
edsair.od.......951..cb78280bca2e01b747d5ba4abbe54b01