Effect of Modifying Alumina Desiccants with Sulfuric Acid on Their Physicochemical Properties Full article
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Kinetics and Catalysis
ISSN: 0023-1584 , E-ISSN: 1608-3210 |
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| Output data | Year: 2014, Volume: 55, Number: 3, Pages: 372-379 Pages count : 8 DOI: 10.1134/S0023158414030021 | ||
| Tags | Acid Site; Average Pore Diameter; Lewis Acid Site; Static Capacity; Bayerite | ||
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| Affiliations |
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Abstract:
In the production of alumina desiccants by extrusion, the introduction of sulfuric acid at the stage of preparing a mouldable paste based on hydroxides containing bayerite or pseudoboehmite increases the sorption capacity of the product. This effect is most pronounced for the pseudoboehmite-based materials. The dynamic capacity of these desiccants increases to the level characteristic of the bayerite-containing hydroxide (>5 g H2O/100 cm3) for a dew point of −40°C and a contact time of 1.5 s), and their static capacity exceeds this value (increasing from 21.13 to 23.1 g H2O/100 cm3). This procedure changes the phase composition and textural characteristics of the pseudoboehmite-based desiccants and increases Brønsted acidity and generates strong Lewis acid sites on the surface of all oxides. The dynamic capacity of desiccants with similar textural characteristics depends on the acid-base properties of their surface.
Cite:
Danilevich V.V.
, Isupova L.A.
, Paukshtis E.A.
, Ushakov V.A.
Effect of Modifying Alumina Desiccants with Sulfuric Acid on Their Physicochemical Properties
Kinetics and Catalysis. 2014. V.55. N3. P.372-379. DOI: 10.1134/S0023158414030021 WOS Scopus РИНЦ ANCAN OpenAlex
Effect of Modifying Alumina Desiccants with Sulfuric Acid on Their Physicochemical Properties
Kinetics and Catalysis. 2014. V.55. N3. P.372-379. DOI: 10.1134/S0023158414030021 WOS Scopus РИНЦ ANCAN OpenAlex
Original:
Данилевич В.В.
, Исупова Л.А.
, Паукштис Е.А.
, Ушаков В.А.
Влияние модифицирования алюмооксидных осушителей серной кислотой на их физико-химические свойства
Кинетика и катализ. 2014. Т.55. №3. С.391-398. DOI: 10.7868/S0453881114030022 РИНЦ OpenAlex
Влияние модифицирования алюмооксидных осушителей серной кислотой на их физико-химические свойства
Кинетика и катализ. 2014. Т.55. №3. С.391-398. DOI: 10.7868/S0453881114030022 РИНЦ OpenAlex
Dates:
| Submitted: | Jul 16, 2013 |
| Published print: | May 1, 2014 |
| Published online: | Jun 17, 2014 |
Identifiers:
| Web of science: | WOS:000337639300012 |
| Scopus: | 2-s2.0-84903776493 |
| Elibrary: | 24064297 |
| Chemical Abstracts: | 2014:980971 |
| Chemical Abstracts (print): | 161:396494 |
| OpenAlex: | W1998904287 |