کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6657176 | 461677 | 2014 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Propane dehydrogenation over Al2O3 supported Pt nanoparticles: Effect of cerium addition
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
The catalyst of Pt nanoparticles loaded on Al2O3 support has been prepared by a facile liquid phase synthesis-ultrasonic vibration method. With propane dehydrogenation as a probe reaction, the influence of promoter cerium (Ce) on the catalyst was investigated by means of transmission electron microscope (TEM), X-ray diffraction (XRD), N2 adsorption-desorption, X-ray photoelectron spectroscopy (XPS), Fourier transform infrared (FTIR) spectroscopy of CO adsorption, H2-temperature programmed reduction (H2-TPR), and catalytic properties for propane dehydrogenation. The results revealed that the Pt nanograins with diameter of 1.6-4.8Â nm were evenly dispersed on the Ce-containing Al2O3 support. The introduction of a small amount Ce into Pt/Al2O3 results in a bimetallic surface interaction, enhancing the surface reducibility and dispersity of Pt nanoparticles. The study of propane dehydrogenation performance shows that Ce-containing Pt catalyst is more active and less coke deposition than Ce-free Pt/Al2O3 counterpart. This study can provide an insight into the design and development of new Pt-based catalyst, especially for the improvement of catalytic activity and stability towards alkane dehydrogenation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel Processing Technology - Volume 128, December 2014, Pages 283-288
Journal: Fuel Processing Technology - Volume 128, December 2014, Pages 283-288
نویسندگان
Zhanhua Ma, Jun Wang, Jun Li, Ningning Wang, Changhua An, Lanyi Sun,