کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
40132 45844 2013 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Catalysis with ceria nanocrystals: Bio-oil model compound ketonization
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Catalysis with ceria nanocrystals: Bio-oil model compound ketonization
چکیده انگلیسی


• Shape selective ceria nanocrystals were synthesized.
• The nanoparticles were examined as catalysts in the ketonization of acetic acid.
• No clear specific connection between shape and activity was determined.

The problems associated with the high content of organic acids present in bio-oil can potentially be alleviated through the use of the ketonization reaction. While there have been previous reports that ketonization reactions are sensitive to the surface morphology of the respective catalyst, these studies have largely been performed in idealized conditions. Here, shape selective ceria nanocatalysts were synthesized and examined in both condensed and vapor phase ketonization reactions with the model bio-oil compound, acetic acid. It was found that in lower temperature (503 K) condensed-phase conditions the morphology of the catalyst was of less importance due to crystal disruption from metal carboxylate formation. However, the bulk structure was maintained to a greater extent in the higher temperature (623 K) vapor phase conditions. This work demonstrated that surface morphology of the ceria catalyst did not play a significant role in the ketonization reaction.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Catalysis A: General - Volumes 464–465, 15 August 2013, Pages 288–295
نویسندگان
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