Investigation of the Dissolution Kinetics of Meta-Kaolin in H2SO4 Solution
| Autor: | Handan Akalın, Nergis Melek, Mehmet Rıza Altıokka, Sema Akyalçın |
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| Přispěvatelé: | Anadolu Üniversitesi, Mühendislik Fakültesi, Kimya Mühendisliği Bölümü, Altıokka, Mehmet Riza, Akyalçın, Sema |
| Rok vydání: | 2010 |
| Předmět: |
Chromatography
Reaction step General Chemical Engineering Kinetics Analytical chemistry chemistry.chemical_element Sulfuric acid General Chemistry Activation energy Industrial and Manufacturing Engineering law.invention chemistry.chemical_compound chemistry law Aluminium Calcination Leaching (metallurgy) Dissolution |
| Zdroj: | Industrial & Engineering Chemistry Research. 49:12379-12382 |
| ISSN: | 1520-5045 0888-5885 |
| DOI: | 10.1021/ie101147n |
| Popis: | WOS: 000284991100008 Kaolin with a given size distribution was calcined at 1023 K for 2 h then digested in 3 0, 4 5, and 60 N sulfuric acid at constant temperatures within the range 328-358 K The samples taken from the solution at predetermined time intervals were analyzed by using a complexometric method and the amount of aluminum passed into the solution was determined The results showed that the dissolution kinetics follow the shrinking core model for spherical particles of unchanging size, t/tau = 1 - (1 - x(B))(1/3), with the apparent activation energy of 98 4 kJ/mol The leaching reaction was found to be the 0 75th order with respect to acid concentration and controlled by reaction step |
| Databáze: | OpenAIRE |
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