A Perspective on the Selective Catalytic Reduction (SCR) of NO with NH3 by Supported V2O5–WO3/TiO2 Catalysts,ACS Catalysis

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A Perspective on the Selective Catalytic Reduction (SCR) of NO with NH3 by Supported V2O5–WO3/TiO2 Catalysts
ACS Catalysis ( IF 11.3 ) Pub Date : 2018-06-04 00:00:00 , DOI: 10.1021/acscatal.8b01357
Jun-Kun Lai ₁ , Israel E. Wachs ₁

Affiliation

The selective catalytic reduction (SCR) of NO_x with NH₃ to harmless N₂ and H₂O plays a crucial role in reducing highly undesirable NO_x acid gas emissions from large utility boilers, industrial boilers, municipal waste plants, and incinerators. The supported V₂O₅–WO₃/TiO₂ catalysts have become the most widely used industrial catalysts for these SCR applications since introduction of this technology in the early 1970s. This Perspective examines the current fundamental understanding and recent advances of the supported V₂O₅–WO₃/TiO₂ catalyst system: (i) catalyst synthesis, (ii) molecular structures of titania-supported vanadium and tungsten oxide species, (iii) surface acidity, (iv) catalytic active sites, (v) surface reaction intermediates, (vi) reaction mechanism, (vii) rate-determining-step, and (viii) reaction kinetics.

中文翻译：

V ₂ O ₅ -WO ₃ / TiO ₂负载催化剂对NH ₃选择性催化还原NO的展望

用NH ₃将NO _x选择性催化还原（SCR）为无害的N ₂和H ₂ O在减少大型公用事业锅炉，工业锅炉，市政废物处理厂和焚化炉产生的极不希望的NO _x酸性气体排放中起着至关重要的作用。自1970年代初引入该技术以来，负载型V ₂ O ₅ -WO ₃ / TiO ₂催化剂已成为这些SCR应用中使用最广泛的工业催化剂。本观点探讨了负载型V ₂ O ₅ –WO ₃ / TiO的当前基本理解和最新进展。₂催化剂体系：（i）催化剂合成，（ii）二氧化钛负载的钒和氧化钨物质的分子结构，（iii）表面酸度，（iv）催化活性位点，（v）表面反应中间体，（vi）反应机理，（vii）速率确定步骤和（viii）反应动力学。

更新日期：2018-06-04

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