کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
60481 47534 2016 12 صفحه PDF سفارش دهید دانلود کنید
عنوان انگلیسی مقاله ISI
Sour water–gas shift reaction over Pt/CeZrO2 catalysts
ترجمه فارسی عنوان
واکنش تغییر آب و گاز ترش بیش از کاتالیزور Pt/CeZrO2
کلمات کلیدی
تغییر آب و گاز؛ تحمل گوگرد؛ کاتالیزور مبتنی بر پلاتین؛ اکسیدهای مخلوط Ce-Zr . اثر پشتیبانی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
چکیده انگلیسی


• The presence of H2S influenced platinum catalysts for the water–gas shift reaction.
• Pt/CeO2 showed higher initial catalytic activity and deactivation and low recovery.
• ZrO2 addition to CeO2 was beneficial to increase sulfur tolerance.
• The deactivation ratios for Pt/CeZrO2 catalysts were low with full recovery.

The influence of H2S on the performance of platinum catalysts for the water–gas shift reaction was investigated. Platinum catalysts supported on different oxides (γ-Al2O3, ZrO2, CeO2, Ce0.75Zr0.25O2, and Ce0.25Zr0.75O2) were tested under industrial conditions in the absence and presence of H2S. Pt/CeO2 showed higher initial catalytic activity than Pt/Al2O3, but exhibited some deactivation and low recovery of catalytic activity when subjected to contaminated conditions, due to the formation of sulfur species on the ceria surface. Zirconia addition to CeO2 was beneficial to increase sulfur tolerance and preserve high activity. The deactivation ratios for Pt/CeZrO2 catalysts were very close and recovery ratios were 100%, indicating that for these catalysts the deactivation is reversible, which can be related to less interaction between H2S and these supports.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Catalysis - Volume 341, September 2016, Pages 1–12
نویسندگان
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