Effect of different parameters on porosity and compressive strength of coal tar pitch derived carbon foam

Design and Catalytic Behaviour of Hosted in Activated Carbon Foam CoxZn1−xFe2O4 Ferrites

“…The overlapping absorption features in the 1440-1380 cm −1 region could be assigned to C-OH bending and asymmetric CH 2 and CH deformations [34,37]. The broad absorption band in the 1300-1260 cm −1 region originates probably with the superimposition of stretching vibrations in C-O-C, carbonyl and carboxyl groups [34,37,65]. For the ACF60 sample, this band is shifted to lower wavenumbers, which indicates the presence of a larger portion of carboxyl groups.…”

“…1600-1500 cm −1 are attributed to the C-C stretching vibrations in the aromatic rings [34,60]. The overlapping absorption features in the 1440-1380 cm −1 region could be assigned to C-OH bending and asymmetric CH2 and CH deformations [34,37]. The broad absorption band in the 1300-1260 cm −1 region originates probably with the superimposition of stretching vibrations in C-O-C, carbonyl and carboxyl groups [34,37,65].…”

“…Contribution of the C-N stretching vibrations to the band situated at around 1220 cm −1 due to the incorporation of nitrogen in the carbon foam during the synthesis in the presence of nitric acid could also be assumed [46]. The significant absorption bands in the 900-700 cm −1 region are generally assigned to out-of-plane vibrations in the aromatic rings [37,60,62]. The differences in the profile of this band for both samples is probably associated with the presence of a high amount of isolated (890-870 cm −1 ) and two adjacent (850-810 cm −1 ) H atoms in the aromatic ring for ACF40 and domination of over 3 adjacent H atoms (790-720 cm −1 ) in the aromatic ring for ACF60 [63], which indicates a higher degree of cross-link for the former material.…”

“…The potential of the ferrite/activated carbon composites as catalysts in methanol decomposition was also demonstrated. Carbon foam is a new class of porous materials, which can be easily prepared by carbonization of low-cost materials, such as polymers, biomass, coal or petroleum tar pitch [32][33][34][35][36][37][38][39]. Carbon foam has a specific, highly interconnected porous structure.…”

“…It is developed by macropores, surrounded by carbon wall (cells) and holes in the carbon wall, connecting the neighboring cells (windows) as well as a lot of micropores, mesopores and small macropores in the carbon wall [40]. The precursor characteristics and the preparation method used affect the structure of the obtained material [37,[41][42][43]. Stoycheva et al [44] reported an easy and economically viable procedure for the preparation of carbon foam.…”