کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7709805 1497334 2017 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Ammonia synthesis at intermediate temperatures in solid-state electrochemical cells using cesium hydrogen phosphate based electrolytes and noble metal catalysts
ترجمه فارسی عنوان
سنتز آمونیاک در دمای متوسط ​​در سلول های الکتروشیمیایی جامد با استفاده از الکترولیت های بر پایه هیدروژن فسفات سزیم و کاتالیزورهای فلز نجیب
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
چکیده انگلیسی
This work reports the electrochemical synthesis of ammonia in solid-state cells at 220 °C and atmospheric pressure. Composites of CsH2PO4 and SiP2O7 were used as the electrolyte, and Pt/C-loaded carbon paper was employed as the anode. Five kinds of electrode materials, including Pt/C-, Pt-Ru/C-, Ru/C-, Ru- and Ag-Pd-loaded carbon paper, were examined as the cathode. Electrochemical activities of the cathode materials were evaluated by cyclic voltammetry. Both H2 and steam were used as the hydrogen source. The successful synthesis of ammonia was confirmed using Nessler's solution. When H2 was used as the hydrogen source, ammonia formation rates higher than 10−10 mol cm−2 s−1 were obtained using Pt/C- or Ru-loaded carbon paper as the cathode. When steam was used as the hydrogen source, ammonia formation rates higher than 10−11 mol cm−2 s−1 were obtained using Pt-Ru/C- or Ru/C- or Ru-loaded carbon paper as the cathode. Ru and Ag-Pd were the most promising noble metal catalysts for electrochemical synthesis of ammonia from N2 and steam.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 42, Issue 43, 26 October 2017, Pages 26843-26854
نویسندگان
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