High porosity activated carbon synthesis using asphaltene particles

Petroleum Asphaltene-Based Activated Nanoporous Carbon for CO2 Capture and H2 Storage

“…In 2015 and 2017, IBM Zurich confirmed the island architecture by obtaining atomic force microscopy (nc-AFM) images of asphaltene molecules. , Asphaltenes are soluble in toluene and chloroform and insoluble in linear alkanes, including n -heptane and n -hexane. , The richness in sp 2 -hybridization of carbon species and polycyclic aromatic hydrocarbons found in the chemical structures of asphaltenes ease the cross-linking of these molecules. , The development of porous carbon nanosheets with a certain level of graphitization obtained from asphaltenes, a cheap and abundant by-product, for mass production might have significance for both the environment and crude oil industry . Several reports have explained the synthesis of nanoporous carbonized asphaltenes. ,, The results obtained by using asphaltenes were either low-surface-area carbon such as 1590 and 1717 m 2 /g, or a costly modification procedure tested in the synthetic steps to augment the surface area of the carbonized material. − In carbonizing asphaltenes, an important aspect, as revealed by AFM imaging, is that, depending on the origin, the asphaltene structure presents a different number of fused aromatic rings and different types of pentagonal rings …”

Studies on the Process of Basic Dyes Adsorption on Uniform Spherical Carbons

“…S BET /V p /D a [mg/g] activated carbons prepared from granulated post-consumer PET by combined activation including heat treatment with sulphuric acid, (chemical activation) followed by steam activation [41] 1030 m 2 /g; 0.60 cm 3 /g; 1.8 nm 319 active carbon from lignin [42] 570 m 2 /g; 294 hollow micro-mesoporous carbon polyhedra from the cellular cavities of PU foam [43] 1384 m 2 /g; 1.15 3.2 nm 354 mesoporous carbon with embedded iron carbide nanoparticles [44] 252 m 2 /g; 0.25 cm 3 /g; 5.4 nm 90 activated carbon web prepared by controlled pyrolysis of acrylic fibrous waste under the layer of charcoal using physical activation [45] 280 m 2 /g; 0.44 cm 3 /g; 3.1 nm 8.76 activated carbon prepared from coconut shells and modified by spark discharge of atmospheric pressure plasma jets [46] 1047 m 2 /g; 0.42 cm 3 /g; 1.6 nm 530 activated carbon from asphaltene particles extracted from natural bitumen [47] 970 m 2 /g; 1.3 cm 3 /g 218 magnetic active carbon produced by ZnCl 2 activation of coconut shell (char:ZnCl 2 , 2 : 1) and by chemical co-precipitation of Fe 3 + /Fe 2 + [48] 748 m 2 /g; 0.42 cm 3 /g, 2.2 nm 156 activated carbon prepared by thermal activation of phosphoric acid treated eucalyptus residue [49] 1545 m 2 /g; 977 spherical activated carbon -[this study] 1269 m 2 /g; 1.56 cm 3 /g, 4.9 nm…”

A facile synthesis of a Ce-based MOF at room temperature for effective adsorption of methylene blue

“…9,10 Adsorbents such as activated carbon, zeolite, clay, and metal oxides have been used for the adsorption of dyes. Low dye adsorption is still an issue with activated carbon, although it has a certain specific surface area and porosity, 11 while zeolite and clay are frequently used in the adsorption of cationic dyes due to their cation exchange properties, which result in low selectivity of dye adsorption. 12 Zeolite offers mechanical and thermal stability, but it has insufficient structural flexibility.…”