کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
59883 1419431 2015 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
MoOx-promoted Pt catalysts for the water gas shift reaction at low temperatures
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
MoOx-promoted Pt catalysts for the water gas shift reaction at low temperatures
چکیده انگلیسی

Pt-Mo/SiO2 catalysts were prepared using impregnation-reduction methods. Mo-promoted Pt catalysts exhibit much higher water gas shift reaction activity at low temperatures than Pt/SiO2 catalysts. Various characterization methods including inductive coupled plasma atomic emission spectrometry, X-ray diffraction, transmission electron microscopy, X-ray absorption near edge spectrum, and X-ray photoelectron spectroscopy were applied to investigate the composition, structure and chemical state of the Pt-Mo/SiO2 catalysts. Our results indicate that the added Mo species effectively improves the dispersion of Pt nanoparticles and the synergistic effect between the Pt nanoparticles and surface MoOx species enhances the catalytic performance for the water gas shift reaction. Pt nanoparticles decorated with highly dispersed MoOx patches are found to be the active architecture.

MoOx-promoted Pt nanoparticles exhibit remarkable activity for the WGS reaction at low temperatures and highly dispersed MoOx nanopatches on Pt nanoparticles are the active architecture.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chinese Journal of Catalysis - Volume 36, Issue 5, May 2015, Pages 750–756
نویسندگان
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