Kinetic studies of acetophenone derivative oximes and investigation of thermal decomposition mechanism.
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| Title: | Kinetic studies of acetophenone derivative oximes and investigation of thermal decomposition mechanism. |
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| Alternate Title: | Asetofenon türevi oksimlerin kinetik çalışmaları ve termal bozunma mekanizmasının incelenmesi. |
| Authors: | İlkileri, Züleyha Merve1 m.ilkileri@gmail.com, Karapınar, Emin2 ekarapinar@pau.edu.tr, Donat, Ramazan2 rdonat@pau.edu.tr, Karapınar, Nazan1 nkarapinar@pau.edu.tr |
| Source: | Pamukkale University Journal of Engineering Sciences. 2025, Vol. 31 Issue 6, p1093-1101. 9p. |
| Subjects: | Acetophenone derivatives, Chemical decomposition kinetics, Thermolysis, Nitroso compounds, Chemical kinetics, Activation energy |
| Abstract (English): | In this study, two acetophenone derivatives, isonitrosomethyl-p-tolyl ketone (L1) and isonitroso-p-chloroacetophenone (L2), were resynthesized, and their thermal decompositions were investigated kinetically and thermodynamically. Nitrogen gas (5, 10, 15 min flow rates) was used as an inert medium in the thermal decompositions of both ligands. Kinetic analyses were first performed independently of the model using Flynn Wall Ozawa (FWO) and Kissinger Akahira Sunose (KAS) methods, and the effective model in the progression of the reaction was examined by combining the FWO and KAS equations with the model equations together with the graphs of the variation of activation energies with the event fraction. The thermal breakdown processes of L1 and L2 occurred within 25 to 600 C. The effect of heating rate on the TG and DTG curves was studied. As the heating rate went up, so did the temperature needed for the synthetic chemical compounds to break down. The activation energies of the L1molecule, as determined by the KAS and FWO techniques, were 75.96 kJ mol-1 and 79.49 kJ mol-1, respectively. The computed values for the L2 molecule were 43.80 and 49.37 kJ mol-1, respectively. [ABSTRACT FROM AUTHOR] |
| Abstract (Turkish): | Bu çalışmada, iki adet asetofenon türevi olan izonitrosometil-p-tolil keton (L1) ve izonitroso-p-kloroasetofenon (L2) ligandları yeniden sentezlenerek kinetik ve termodinamik olarak termal bozunmaları incelenmiştir. Her iki ligandın termal bozunmalarında inert ortam olarak azot gazı (5, 10, 15 dk. akış hızı) kullanılmıştır. Kinetik analizler ilk olarak modelden bağımsız olarak Flynn Wall Ozawa (FWO) ve Kissinger Akahira Sunose (KAS) yöntemleri kullanılarak, aktivasyon enerjilerinin olay kesriyle değişiminin grafikleri ile birlikte FWO ve KAS denklemlernini model denklemleriyle birleştirilmiş haliyle reaksiyonun ilerlemesinde etkin model incelenmiştir. İzonitrosometil-p-tolil keton (L1) ve izonitroso-p-kloroasetofenon (L2)'un termal bozunma basamakları 25 ila 600 C arasında gerçekleşti. Isıtma hızının TG ve DTG eğrileri üzerindeki etkisi incelendi. Isıtma hızı arttıkça, sentezlenen kimyasal bileşiklerin parçalanması için gereken sıcaklık da arttı. L1 molekülünün KAS ve FWO teknikleriyle belirlenen aktivasyon enerjileri sırasıyla 75.96 kJ mol-1 ve 79.49 kJ mol-1 idi. L2 molekülü için hesaplanan değerler sırasıyla 43.80 ve 49.37 kJ mol-1 dür. [ABSTRACT FROM AUTHOR] |
| Copyright of Pamukkale University Journal of Engineering Sciences is the property of Pamukkale University Journal of Engineering Sciences (PAJES) and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 189539874 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Kinetic studies of acetophenone derivative oximes and investigation of thermal decomposition mechanism. – Name: TitleAlt Label: Alternate Title Group: TiAlt Data: Asetofenon türevi oksimlerin kinetik çalışmaları ve termal bozunma mekanizmasının incelenmesi. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22İlkileri%2C+Züleyha+Merve%22">İlkileri, Züleyha Merve</searchLink><relatesTo>1</relatesTo><i> m.ilkileri@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Karapınar%2C+Emin%22">Karapınar, Emin</searchLink><relatesTo>2</relatesTo><i> ekarapinar@pau.edu.tr</i><br /><searchLink fieldCode="AR" term="%22Donat%2C+Ramazan%22">Donat, Ramazan</searchLink><relatesTo>2</relatesTo><i> rdonat@pau.edu.tr</i><br /><searchLink fieldCode="AR" term="%22Karapınar%2C+Nazan%22">Karapınar, Nazan</searchLink><relatesTo>1</relatesTo><i> nkarapinar@pau.edu.tr</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Pamukkale+University+Journal+of+Engineering+Sciences%22">Pamukkale University Journal of Engineering Sciences</searchLink>. 2025, Vol. 31 Issue 6, p1093-1101. 9p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Acetophenone+derivatives%22">Acetophenone derivatives</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+decomposition+kinetics%22">Chemical decomposition kinetics</searchLink><br /><searchLink fieldCode="DE" term="%22Thermolysis%22">Thermolysis</searchLink><br /><searchLink fieldCode="DE" term="%22Nitroso+compounds%22">Nitroso compounds</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+kinetics%22">Chemical kinetics</searchLink><br /><searchLink fieldCode="DE" term="%22Activation+energy%22">Activation energy</searchLink> – Name: Abstract Label: Abstract (English) Group: Ab Data: In this study, two acetophenone derivatives, isonitrosomethyl-p-tolyl ketone (L1) and isonitroso-p-chloroacetophenone (L2), were resynthesized, and their thermal decompositions were investigated kinetically and thermodynamically. Nitrogen gas (5, 10, 15 min flow rates) was used as an inert medium in the thermal decompositions of both ligands. Kinetic analyses were first performed independently of the model using Flynn Wall Ozawa (FWO) and Kissinger Akahira Sunose (KAS) methods, and the effective model in the progression of the reaction was examined by combining the FWO and KAS equations with the model equations together with the graphs of the variation of activation energies with the event fraction. The thermal breakdown processes of L1 and L2 occurred within 25 to 600 C. The effect of heating rate on the TG and DTG curves was studied. As the heating rate went up, so did the temperature needed for the synthetic chemical compounds to break down. The activation energies of the L1molecule, as determined by the KAS and FWO techniques, were 75.96 kJ mol-1 and 79.49 kJ mol-1, respectively. The computed values for the L2 molecule were 43.80 and 49.37 kJ mol-1, respectively. [ABSTRACT FROM AUTHOR] – Name: Abstract Label: Abstract (Turkish) Group: Ab Data: Bu çalışmada, iki adet asetofenon türevi olan izonitrosometil-p-tolil keton (L1) ve izonitroso-p-kloroasetofenon (L2) ligandları yeniden sentezlenerek kinetik ve termodinamik olarak termal bozunmaları incelenmiştir. Her iki ligandın termal bozunmalarında inert ortam olarak azot gazı (5, 10, 15 dk. akış hızı) kullanılmıştır. Kinetik analizler ilk olarak modelden bağımsız olarak Flynn Wall Ozawa (FWO) ve Kissinger Akahira Sunose (KAS) yöntemleri kullanılarak, aktivasyon enerjilerinin olay kesriyle değişiminin grafikleri ile birlikte FWO ve KAS denklemlernini model denklemleriyle birleştirilmiş haliyle reaksiyonun ilerlemesinde etkin model incelenmiştir. İzonitrosometil-p-tolil keton (L1) ve izonitroso-p-kloroasetofenon (L2)'un termal bozunma basamakları 25 ila 600 C arasında gerçekleşti. Isıtma hızının TG ve DTG eğrileri üzerindeki etkisi incelendi. Isıtma hızı arttıkça, sentezlenen kimyasal bileşiklerin parçalanması için gereken sıcaklık da arttı. L1 molekülünün KAS ve FWO teknikleriyle belirlenen aktivasyon enerjileri sırasıyla 75.96 kJ mol-1 ve 79.49 kJ mol-1 idi. L2 molekülü için hesaplanan değerler sırasıyla 43.80 ve 49.37 kJ mol-1 dür. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Pamukkale University Journal of Engineering Sciences is the property of Pamukkale University Journal of Engineering Sciences (PAJES) and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.5505/pajes.2025.35514 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 9 StartPage: 1093 Subjects: – SubjectFull: Acetophenone derivatives Type: general – SubjectFull: Chemical decomposition kinetics Type: general – SubjectFull: Thermolysis Type: general – SubjectFull: Nitroso compounds Type: general – SubjectFull: Chemical kinetics Type: general – SubjectFull: Activation energy Type: general Titles: – TitleFull: Kinetic studies of acetophenone derivative oximes and investigation of thermal decomposition mechanism. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: İlkileri, Züleyha Merve – PersonEntity: Name: NameFull: Karapınar, Emin – PersonEntity: Name: NameFull: Donat, Ramazan – PersonEntity: Name: NameFull: Karapınar, Nazan IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 10 Text: 2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 13007009 Numbering: – Type: volume Value: 31 – Type: issue Value: 6 Titles: – TitleFull: Pamukkale University Journal of Engineering Sciences Type: main |
| ResultId | 1 |
