Low Temperature Microwave Regeneration of Catalytic Diesel Particulate Filter

Low Temperature Microwave Regeneration of Catalytic Diesel Particulate Filter

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Diesel particulate filter (DPF), consisting in alternately plugged parallel square channels with porous walls that trap the soot particles, must be periodically regenerated.In this work, a new procedure for the preparation of microwave susceptible catalytic DPFs based on a preliminary here controlled chemical erosion of the porous structure was optimized, so obtaining catalytic filters with higher catalyst load (30 %wt CuFe2O4).The filters showed pressure drop values very similar equi-jec 7 to that pertaining to the uncatalysed filters and a higher regeneration activity: consequently their microwave assisted regeneration phase, compared to the traditional fuel post-injection, allowed an energy saving of about 60 %.