کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
38706 45788 2016 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Total oxidation of ethanol over Au/Ce0.5Zr0.5O2 cordierite monolithic catalysts
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Total oxidation of ethanol over Au/Ce0.5Zr0.5O2 cordierite monolithic catalysts
چکیده انگلیسی


• Gold/ceria-zirconia catalysts prepared in monolithic form needed for industrial applications using cordierite monoliths.
• Depending on catalyst preparation conditions, different Au particle sizes can be obtained using the same direct anionic exchange method.
• Smaller Au particle sizes result in enhanced redox properties of catalysts and improved catalytic performance in ethanol oxidation.

The aim of this work was to propose the methods for gold introduction during the preparation of monolithic catalysts and to investigate their effect on catalyst properties. Two types of catalysts were prepared: (i) monoliths washcoated with gold/ceria-zirconia powder, and (ii) gold deposited on the monoliths washcoated with ceria-zirconia powder. An important part of the work was the characterization of the catalysts, in particular Au particle size and redox properties. Catalytic performance and selectivity were evaluated using ethanol gas-phase oxidation. It was shown that the enhanced reducibility of the catalysts with higher Au dispersion leads to improved catalytic performance.

Figure optionsDownload high-quality image (105 K)Download as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Catalysis A: General - Volume 522, 25 July 2016, Pages 130–137
نویسندگان
, ,