Kinetics of catalytic hydrolysis of NaBH4 solution: Ni-La-B catalyst

Basit Öğe Kaydı
dc.contributor.authorEkinci, Arzu
dc.contributor.authorSahin, Omer
dc.contributor.authorHoroz, Sabit
dc.date.accessioned2024-12-24T19:25:06Z
dc.date.available2024-12-24T19:25:06Z
dc.date.issued2022
dc.departmentSiirt Üniversitesi
dc.description.abstractIn the present study, hydrolysis of NaBH4 was carried out in the presence of Ni-La-B catalyst, and its kinetic modeling was studied by the Coats-Redfern method. By setting up the system in microwave and non-microwave media, the hydrolysis reaction of NaBH4 was started and the hydrogen formed was measured as a function of time. Hydrolysis of NaBH4 to produce hydrogen was studied in the temperature range 30-80 degrees C. Parameters such as NaOH concentration, time efficiency and microwave power efficiency were examined, and activation energies and reaction degree n values were calculated for each step. When examined in terms of activation energy and NaOH effect, it was observed that the microwave media was more active. In the microwave media, the hydrogen production volume decreased as the NaOH concentration increased. In the non-microwave media, when the NaOH concentration was increased from 1.5 to 5%, the hydrogen volume increased and then decreased with increasing concentration. The activation energy for microwave (Power: 100 W, Heating rate: 2 degrees C/min) and non-microwave media was calculated as 69.920 and 70.544 kJ/mol, respectively. When the heating rate was 8.33 degrees C/min, the activation energy calculated for both media was 46.832 kj/mol (microwave) and 66.960 kj/mol (non-microwave). It was concluded that there are different mechanisms depending on the reaction order of n. The variation of the parameters in the conversion scope was discussed based on changes in solution properties during the progression of the hydrolysis reaction for both microwave and non-microwave media.
dc.identifier.doi10.1007/s41779-021-00673-3
dc.identifier.endpage121
dc.identifier.issn2510-1560
dc.identifier.issn2510-1579
dc.identifier.issue1
dc.identifier.scopus2-s2.0-85118466619
dc.identifier.scopusqualityQ2
dc.identifier.startpage113
dc.identifier.urihttps://doi.org/10.1007/s41779-021-00673-3
dc.identifier.urihttps://hdl.handle.net/20.500.12604/6269
dc.identifier.volume58
dc.identifier.wosWOS:000713992000001
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherSpringer
dc.relation.ispartofJournal of The Australian Ceramic Society
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_20241222
dc.subjectCoats-Redfern method
dc.subjectMicrowave
dc.subjectCatalyst
dc.subjectActivation energy
dc.titleKinetics of catalytic hydrolysis of NaBH4 solution: Ni-La-B catalyst
dc.typeArticle

Dosyalar

Koleksiyon

WOS İndeksli Yayınlar Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu