Carbon Adsorbents Produced From the Processed Combustible Raw Materials

Organomineralic adsorbents derived from zeolites by the use of cracking residues

“…It has been shown [1][2][3][4][5] that it is promising to use cracking residues as binders and components in making adsorbents, as they are represented by multifunctional compounds. They consist of condensed aromatic structures with small numbers of heterocycles and small numbers of alkyl substituents.…”

Mathematical dependence of the sorptivity of adsorbents with asphalt additives on their nature and structure

“…This is also indicated by the fact that the absence of W 01 in Eqs. (2) and (4) has little effect on the exponents for other parameters, and a higher value of k corresponds to the functional-empirical equations for methane, carbon dioxide, and xenon, i.e., they better describe the dependence being studied.…”

“…Adsorbents obtained from petroleum residues (asphaltites, residues from propane de-asphaltization, concentrates of asphaltite compounds from acid and straight-run tars), are distinguished from commercial adsorbents by high sorptivity with the same pore structure owing to the higher content of heteroatoms and therefore high surface polarity [1,2].…”

“…This relation makes it possible to predict the sorption properties and determines their parameters from chromatographic data. The sorptivity of high-polarizability molecules is most affected not by the total volume of the micropores but rather by the width of the micropore-size distribution and the surface polarity of the sorbents.Adsorbents obtained from petroleum residues (asphaltites, residues from propane de-asphaltization, concentrates of asphaltite compounds from acid and straight-run tars), are distinguished from commercial adsorbents by high sorptivity with the same pore structure owing to the higher content of heteroatoms and therefore high surface polarity [1,2].The present article describes the technology used to obtain the adsorbents with asphaltite addition, the properties of the adsorbents, and a mathematical relation that takes account of the sorptivity of the adsorbents, the total volume of the micropores, the width of the micropore-size distribution, as well as the surface polarity characterized by the content of heteroatoms. The carbon adsorbents were formed by a well-known commercial scheme [1] from a charge containing lean Propop'ev coal (central mine) containing 13.4 % volatile materials and 7 wt.…”