Parameters influence establishment of the petroleum coke genesis on the structure and properties of a highly porous carbon material obtained by activation of KOH

Kudinova, A.A.; Poltoratckaya, Maria E.; Gabdulkhakov, Renat R.; Литвинова, Т. Е.; Rudko, Viacheslav A.

doi:10.1007/s10934-022-01287-1

Cited by 13 publications

(7 citation statements)

References 63 publications

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“…Petroleum coke was obtained from vacuum residue in the laboratory delayed coking unit at a coking temperature of 500℃ and overpressure of 1.5 to 3.5 atmg. The delayed coking process and petroleum coke characteristics are described in more detail in our previous paper (Kudinova et al, 2022).…”

Section: Methodsmentioning

confidence: 99%

“…The obtained samples were dried at 120℃ for 3 h. Optimal activation parameters for obtaining highly porous carbon material were selected based on literature data. Activated petroleum coke characteristics are described in more detail in our previous paper (Kudinova et al, 2022).…”

Section: Methodsmentioning

confidence: 99%

“…The elemental composition was obtained using carbon, hydrogen, nitrogen analyzer LECO CHN628 and X-ray uorescence spectrometer EDX-7000P Shimadzu (Kudinova et al, 2022). The results are presented in Table 3.…”

Section: Methodsmentioning

confidence: 99%

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Thermodynamic studу of ethyl alcohol sorption on activated petroleum coke

Tsareva,

Poltoratckaya,

Litvinova

et al. 2023

Preprint

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The low-quality petcoke do not find qualified application and is stockpiled at refineries or used as solid fuel. One of the promising uses of low-quality petroleum coke is its physical or chemical activation in order to obtain a highly porous carbon material that can be used as a catalyst carrier, adsorbent, the basis for capacitive electrodes etc. In this work the possibility of using petroleum coke to produce sorbent for organic compounds was studied. The activated petroleum cake was obtained by chemical activation with KOH, and had a specific surface area of 1218 m2/g. Sorption of ethyl alcohol was studied at temperatures 285, 293, and 300 K. It is a physical process, proceeds mainly in pores of activated petroleum coke. Sorption can be described as a reversible exothermic process. The effective Gibbs energy at a temperature of 293 K is -2.75 kJ/mol. The heat of sorption is -25.65 kJ/mol. The obtained data confirm that porous carbon material obtained from petroleum coke can be used as sorbent for ethanol at room temperature. For example, for adsorption of bioethanol from the effluent of the fermentation process or for purification of wastewater from organic compounds.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Thermodynamic studу of ethyl alcohol sorption on activated petroleum coke

Tsareva,

Poltoratckaya,

Litvinova

et al. 2023

Preprint

Self Cite

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show abstract

“…Extraction efficiency of copper cations from solutions was determined according to GOST 4388-72 "Drinking water. Methods for Determination of Copper Mass Concentration" [20,21].…”

Section: Introductionmentioning

confidence: 99%

Development of composition and study of sorbent properties based on saponite

Zubkova

Pyagay

Pankratieva

et al. 2023

PMI

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The development of a comprehensive approach to preventing the pollution of natural objects is necessary due to the high requirements of environmental legislation for the discharge of industrial wastewater. Adsorbents are used in various industries to extract heavy metals from wastewater. In this study the possibility of using saponite clay as a raw material for the production of sorbent for the extraction of copper ions Cu2+ from industrial wastewater is considered, a recipe and technology of sorbent production are developed, and its chemical composition is established. It has been established that the optimum temperature for heat treatment of the sorbent and corresponds to 550 ºC, since at this temperature saponite extrudates acquire strength (strength 34.1 kg/mm2) and textural properties (specific surface area of pellets 22.803 m2/g), allowing them to be used as sorbents. The kinetics of molecular adsorption was studied using model solutions of copper (II) sulfate. The extraction efficiency of copper (II) ions from the model solutions is 93 %. Extraction efficiency of copper (II) ions from copper plating wastewater reaches 94 %. SEM results confirm the presence of metal on the sorbent surface.

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“…According to this document, it is necessary to increase the production of metallurgical products with high added value. Moreover, the priority of the state is to stimulate the improvement of the technical level of production of Russian companies in order to increase the efficiency of processing mineral raw materials [48][49][50][51][52][53][54].…”

Section: Introductionmentioning

confidence: 99%

Investigation of the ytterbium reduction process in the synthesis of Al – Yb master alloys for the modification of aluminum alloys

Bazhin¹,

Savchenkov²,

Gordevnin³

2022

nfm

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This work investigates the synthesis process and characterization of a novel type of aluminum-ytterbium master alloy in molten salts. The significance of the obtained results for the research conducted in the field so far is due to the previously proven effectiveness of the influence of ytterbium on the structure and properties of aluminum alloys. During experimental work, the thermodynamic analysis of the aluminothermic process of ytterbium fluoride reduction from molten salts was performed and revealed that the process might occur and develop in the presence of sodium fluoride and potassium chloride if the NaYbF 4 precursor is formed. Subsequently, the temperature intervals of thermal effects during the process of reduction of ytterbium from its fluoride in molten salts (NaF -KCl) by aluminum were determined as a result of thermal analysis. During Al -Yb master alloys synthesis experiments, the maximal value of ytterbium extraction to master alloy of 82.5% was achieved by changing the process parameters, such as temperature, reaction time, and molten salts/aluminium ratios. Besides, master alloys containing ytterbium from 1.1 to 5.1 wt.% were synthesized using the optimized technological process conditions and examined with metallographic analysis. The analysis revealed that the microstructure of the synthesized master alloys is presented by eutectic colonies of Al + Al 3 Yb composition located along the boundaries of α-Al dendritic cells. It was found that about 85.5% of the area of the studied samples with ytterbium content of 5.1 wt.% consist of aluminum dendrites with an average cell size of 25 μm. The presented in this research results are of significant importance for the development of cheap and high-quality aluminum alloys.

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Parameters influence establishment of the petroleum coke genesis on the structure and properties of a highly porous carbon material obtained by activation of KOH

Cited by 13 publications

References 63 publications

Thermodynamic studу of ethyl alcohol sorption on activated petroleum coke

Thermodynamic studу of ethyl alcohol sorption on activated petroleum coke

Development of composition and study of sorbent properties based on saponite

Investigation of the ytterbium reduction process in the synthesis of Al – Yb master alloys for the modification of aluminum alloys

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