Influence of Synthesis Conditions on the Physicochemical Properties and Catalytic Activity of FeCr-Pillared Bentonites
المؤلف
المصدر
العدد
المجلد 2012، العدد 2012 (31 ديسمبر/كانون الأول 2012)، ص ص. 1-14، 14ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2012-01-16
دولة النشر
مصر
عدد الصفحات
14
التخصصات الرئيسية
الملخص EN
The synthesis of Fe/Cr-pillared bentonites starting from a 2% clay suspension and also from dry clay using ultrasound treatment for both the aging and the intercalation steps of the pillaring solution considerably reduces the time and the amount of water required compared with the conventional synthesis method.
The catalysts were characterized using scanning electron microscopy with an energy dispersive system (SEM-EDS), powder X-ray diffraction (XRD), N2 and CO2-adsorption/desorption, electron paramagnetic resonance (EPR), Fourier-transform infrared spectroscopy (FTIR) and thermogravimetric (TG) analysis and the catalytic activity of selected samples was evaluated for the phenol oxidation reaction.
The results of XRD analysis showed that delaminated Fe/Cr-pillared bentonite with d001 value 68 Å was observed after intercalation a direct mixture of the pillaring solution and dry clay.
The adsorption-desorption isotherm analysis showed that the samples synthesized with the proposed methodology in intercalation stage have similar textural properties and these properties do not change remarkably with synthesis conditions.
In addition, the characterisation studies showed that the physicochemical properties of samples synthesized by ultrasound were comparable to those of sample synthesized by conventional method in this study.
The sample synthesized by conventional method show 50% phenol conversion.
This value was higher than those of samples synthesized by the ultrasound.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Tomul, Fatma. 2012. Influence of Synthesis Conditions on the Physicochemical Properties and Catalytic Activity of FeCr-Pillared Bentonites. Journal of Nanomaterials،Vol. 2012, no. 2012, pp.1-14.
https://search.emarefa.net/detail/BIM-997470
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Tomul, Fatma. Influence of Synthesis Conditions on the Physicochemical Properties and Catalytic Activity of FeCr-Pillared Bentonites. Journal of Nanomaterials No. 2012 (2012), pp.1-14.
https://search.emarefa.net/detail/BIM-997470
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Tomul, Fatma. Influence of Synthesis Conditions on the Physicochemical Properties and Catalytic Activity of FeCr-Pillared Bentonites. Journal of Nanomaterials. 2012. Vol. 2012, no. 2012, pp.1-14.
https://search.emarefa.net/detail/BIM-997470
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-997470
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