Inorganic Chemicals Industry >
Research status and prospects of diesel SCRF catalysts
Received date: 2020-08-14
Online published: 2021-02-06
By analyzing the impact of future emission regulations on diesel aftertreatment systems,it was found that the SCRF systems having greater advantages of De-NOx under low temperature or cold start conditions.It will play an important role in meeting China 6b（China′s stage 6 vehicle emission standards） and above.The characteristics and applicability of several carriers commonly used in SCRF were described,and the factors to be considered for carrier material and parameter selection were pointed out.It was found that the carriers with high-void of SiC,ACM and AF having a broad application prospects.The research status and respective characteristics of V/Cu/Fe-SCRF,layered and mixed coating technologies were summarized,it was confirmed that Cu-based molecular sieves were still the preferred coating material for SCRF catalysts,especially after aging of Cu-LTA.It still showed excellent NOx conversion performance at high temperature.The method and significance of SCRF modeling and simulation were introduced,and it was confirmed that SCRF simulation can be better used for practical application simulation.
Key words： diesel engine; SCRF; soot oxidation; NOx reduction; catalysts
Chaoqiang Wang , Fei Yu , Shiying Chang , Huilong Lai , Jiangli Ma , Dongxia Yang , Zhongchun Zhang . Research status and prospects of diesel SCRF catalysts[J]. Inorganic Chemicals Industry, 2021 , 53(2) : 5 -10 . DOI: 10.11962/1006-4990.2020-0164
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