Reactivity Analysis and Modeling of Cu-SCR Based on NH₃-SCR Mechanism Considering Cu Redox

Cu のレドックスを考慮したNH₃-SCR 反応メカニズムに基づく Cu-SCR 触媒の反応性解析とモデリング

In this study, NOₓ purification characteristics of Cu-zeolite catalyst were analyzed based on the NH₃-SCR reaction mechanism considering Cu redox. Adsorbed NH₃ showed different reactivity with NOₓ depending on the type of adsorption site and gas compositions. Reactivity of adsorbed NH₃ on Cu sites had changed by the presence of oxidative gas component, and it was shown that NOₓ was also purified at reaction sites derived from zeolite. The authors proposed reaction schemes considering these effects and developed the SCR/DPF model incorporating these schemes.本研究では,Cuのレドックスを考慮したNH₃-SCR反応メカニズムに基づきCu-SCR触媒の反応点活性化条件の違い及び吸着NH₃の種類によるNOₓ浄化特性を解析し,その影響を明らかにすると共にこれらを考慮したモデル化を行った.また,本モデルにて計算を行い実使用条件でのNOx浄化性について知見を得た.

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  • Accession Number: 01689616
  • Record Type: Publication
  • Source Agency: Japan Science and Technology Agency (JST)
  • Files: TRIS, JSTAGE
  • Created Date: Nov 26 2018 3:02PM