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文章標題: 「Preparation and characterization of nano-rare earth composite materials: application in selectivity catalytic oxidation of ammonia and its cytotoxicity study」
出版年月: 2011/02
委辦機關: 科技部
文章出處: JOURNAL OF HAZARDOUS MATERIALS
作者: Chang-Mao Hung
摘要:
This work considers the oxidation of ammonia (NH3) by selective catalytic oxidation (SCO) over a Pt-Pd-Rh cordierite monolith catalyst in a tubular fixed-bed flow quartz reactor (TFBR) at temperatures between 423 and 623 K. A Pt-Pd-Rh cordierite monolith catalyst was prepared by incipient wetness impregnation with aqueous solutions of H-2 PtCl6, Pd(NO3)(3) and Rh(NO3)(3) that were coated on cordierite substances. The catalysts were characterized using XRD, PSA and SEM. The experimental results show that around 99.0% NH3 removal was achieved during catalytic oxidation over the Pt-Pd-Rh cordierite monolith catalyst at 623 K with oxygen content of 4%. N-2 was the main product in the NH3-SCO process over the Pt-Pd-Rh cordierite monolith catalyst. These results also verify that the Pt-Pd-Rh metals on cordierite monolith surfaces, resulting in the formation of catalytically active sites at the metal-support interface in the reduction of NH3 in the process.

文獻摘要連結:
卷號: 180
頁碼: P.561~565
關鍵字: Selective catalytic oxidation (SCO); Tubular fixed-bed reactor (TFBR); Ammonia (NH3); Pt-Pd-Rh cordierite monolith catalyst
資料庫分類: 科技部、處理、其他暴露途徑、金屬、多重奈米物質、其他暴露或危害之標的、SCI / SSCI期刊文章、其他風險暴露群、技術研究者、工程/人造/非故意發生
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網頁更新日期:2016/06/15