Thermal Treatment of Cerium Oxide and Its Properties: Adsorption Ability versus Degradation Efficiency
المؤلفون المشاركون
Janoš, Pavel
Hladík, Tomáš
Kormunda, Martin
Ederer, Jakub
Šťastný, Martin
المصدر
Advances in Materials Science and Engineering
العدد
المجلد 2014، العدد 2014 (31 ديسمبر/كانون الأول 2014)، ص ص. 1-12، 12ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2014-06-11
دولة النشر
مصر
عدد الصفحات
12
الملخص EN
Cerium oxide belongs to the most important heterogeneous catalysts, but its applicability as so-called reactive sorbent for the degradation of toxic chemicals was only recently discovered.
For these purposes, cerium oxide is prepared by precipitation of insoluble cerium salts (carbonates) with a subsequent thermal decomposition.
Properties of cerium oxide prepared from the carbonate precursor are strongly affected by the temperature during the calcination.
Main physicochemical properties of cerium oxide (specific surface area, crystallinity, and surface chemistry) were examined in dependence on the calcination temperature.
As the adsorptive properties of CeO2 are undoubtedly of great importance in the abovementioned applications, the adsorption ability was studied using an azo dye Acid Orange 7 (AO7) as a model compound.
The highest sorption efficiency towards AO7 exhibited sorbents prepared at temperatures below 700°C, which was attributed mainly to the presence of hydroxyl groups on the oxide surface.
A strong correlation was found between an adsorption efficiency of cerium oxides and their degradation efficiency for organophosphate pesticide parathion methyl.
The >Ce–OH groups on the sorbent surface are responsible for the dye binding by the surface-complexation mechanism, and probably also for the nucleophilic cleavage of the P–O–aryl bond in the pesticide molecule.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Janoš, Pavel& Hladík, Tomáš& Kormunda, Martin& Ederer, Jakub& Šťastný, Martin. 2014. Thermal Treatment of Cerium Oxide and Its Properties: Adsorption Ability versus Degradation Efficiency. Advances in Materials Science and Engineering،Vol. 2014, no. 2014, pp.1-12.
https://search.emarefa.net/detail/BIM-1015808
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Janoš, Pavel…[et al.]. Thermal Treatment of Cerium Oxide and Its Properties: Adsorption Ability versus Degradation Efficiency. Advances in Materials Science and Engineering No. 2014 (2014), pp.1-12.
https://search.emarefa.net/detail/BIM-1015808
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Janoš, Pavel& Hladík, Tomáš& Kormunda, Martin& Ederer, Jakub& Šťastný, Martin. Thermal Treatment of Cerium Oxide and Its Properties: Adsorption Ability versus Degradation Efficiency. Advances in Materials Science and Engineering. 2014. Vol. 2014, no. 2014, pp.1-12.
https://search.emarefa.net/detail/BIM-1015808
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1015808
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر