氨气选择性催化还原(NH3-SCR)消除氮氧化物(NOx)以其高效、低成本的优势成为目前最具潜力和最广泛应用的固定源脱硝技术.传统的NH3-SCR以V2O5/WOx-TiO2为催化剂,但该类催化剂水热稳定性差,易中毒且其本身就具有毒性,因此开发金属基分子筛催化剂是当前的研究热点之一.本文介绍了分子筛型NH3-SCR催化剂的研究进展,总结了不同金属负载分子筛对选择性催化还原的影响及其反应机理,探讨了催化剂失活的影响因素.
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