Efficient adsorbent-desiccant based on aluminium oxide
| Autor: | E. P. Meshcheryakov, Mariya P. Sandu, Alexey S. Knyazev, Sergey I. Reshetnikov, Irina Kurzina |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Desiccant
Materials science aluminium oxide адсорбция водяного пара 02 engineering and technology 010402 general chemistry 01 natural sciences lcsh:Technology адсорбционная активность lcsh:Chemistry chemistry.chemical_compound adsorbent adsorption activity Adsorption material modification with ions адсорбенты General Materials Science оксид алюминия Texture (crystalline) Instrumentation Gibbsite lcsh:QH301-705.5 Fluid Flow and Transfer Processes Aluminium oxides lcsh:T Process Chemistry and Technology General Engineering 021001 nanoscience & nanotechnology Alkali metal Acceptor lcsh:QC1-999 0104 chemical sciences Computer Science Applications Chemical engineering chemistry lcsh:Biology (General) lcsh:QD1-999 lcsh:TA1-2040 Aluminium oxide 0210 nano-technology lcsh:Engineering (General). Civil engineering (General) water vapour adsorption lcsh:Physics |
| Zdroj: | Applied sciences. 2021. Vol. 11, № 6. P. 2457 (1-23) Applied Sciences, Vol 11, Iss 2457, p 2457 (2021) |
| Popis: | The review describes the main methods of obtaining hydroxides and aluminium oxides (AO) of various structures from gibbsite. The promising techniques of obtaining AO adsorbents are discussed, namely the technique of thermal activation in the mode of pneumatic transport with gibbsite by heated air (TCA Gb) and the technique of thermal activation of gibbsite in centrifugal flash reactors (CTA Gb). The main methods of improving the adsorbent properties of AO, such as the optimisation of texture characteristics and phase composition, as well as the influence of the modification of aluminium oxide adsorbents, obtained using CTA and TCA technologies with cations of alkaline metals, are considered. It is shown that the modification allows a controlled variation of the characteristics of donor and acceptor active sites on the surface of adsorbents and, thus, a substantial increase in their adsorption activity, in particular, with respect to water vapour. |
| Databáze: | OpenAIRE |
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