کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
49236 46726 2016 5 صفحه PDF ندارد دانلود رایگان
عنوان انگلیسی مقاله
Property influence and poisoning mechanism of HgCl2 on V2O5-WO3/TiO2 SCR-DeNOx catalysts
ترجمه فارسی عنوان
تاثیر خواص و مکانیسم مسمومیت HgCl2 بر روی کاتالیزورهای V2O5-WO3/TiO2 SCR-DeNOx
کلمات کلیدی
کاهش کاتلیست انتخابی؛ HgCl2؛ V2O5-WO3/TiO2 SCR-DeNOx ؛ فعالیت؛ مکانیسم مسمومیت
Selective catalytic reduction; HgCl2; V2O5-WO3/TiO2; Activity; Poisoning mechanism
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
چکیده انگلیسی


• V2O5-WO3/TiO2 SCR catalysts were deactivated with the addition of HgCl2.
• New NH3 adsorption sites were generated after HgCl2 addition.
• HgCl2-poisoning mechanism over V2O5-WO3/TiO2 SCR catalysts was proposed.

In this paper, HgCl2 was loaded by impregnation method to study its property influence and poisoning mechanism on V2O5-WO3/TiO2 SCR-DeNOx catalyst. For HgCl2-containing catalysts, deactivation was observed in simulated gas stream, and its catalytic activity declined with the increase of HgCl2 loadings. Brønsted acid sites (VOH) and VO bond were affected evidently by HgCl2, new NH3 adsorption site ClVOH was generated after HgCl2 addition. Interactions between HgCl2 and V2O5 resulted in the loss of SCR active sites, and –HgCl existed as the stable form on the bridge site. Finally, the probable schematic diagram of HgCl2 poisoning mechanism was also proposed.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Catalysis Communications - Volume 85, 5 October 2016, Pages 34–38
نویسندگان
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