Deactivation on vehicle-aged diesel oxidation catalysts
نویسندگان
چکیده
This paper studies oxidation catalytic converters that were vehicle-aged in a diesel automobile. The deposition of several atoms (S, P, C, Si, Ca, Zn and Fe) was detected by several chemical analysis techniques. Moreover, AlPO4 and Al2(SO4)3 were identified by XRD. The catalytic performance of the aged catalysts with different mileages showed a similar degree of deactivation for CO and C3H6 oxidation. By contrast, laboratory sintering carried out on fresh catalysts revealed that it may have certain impact in the deactivation of diesel catalysts. Nevertheless, the possibility that the impact of chemical deposition on deactivation has a threshold value cannot be discarded.
منابع مشابه
Diesel Catalysts [subscription]
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