Effect of biofuel- and lube oil-originated sulfur and phosphorus on the performance of Cu-SSZ-13 and V2O5-WO3/TiO2 SCR catalysts

Dahlin, SandraKTH,Processteknologi,Kungliga Tekniska Högskolan (KTH),Royal Institute of Technology (KTH) (författare)

QC 20200630
Two different SCR catalysts, V2O5-WO3/TiO2 and Cu-SSZ-13, were exposed to biodiesel exhausts generated by a diesel burner. The effect of phosphorus and sulfur on the SCR performance of these catalysts was investigated by doping the fuel with P-, S-, or P + S-containing compounds. Elemental analyses showed that both catalysts captured phosphorus while only Cu-SSZ-13 captured sulfur. High molar P/V ratios, up to almost 3, were observed for V2O5-WO3/TiO2, while the highest P/Cu ratios observed were slightly above 1 for the Cu-SSZ-13 catalyst. Although the V2O5-WO3/TiO2 catalyst captured more P than did the Cu-SSZ-13 catalyst, a higher degree of deactivation was observed for the latter, especially at low temperatures. For both catalysts, phosphorus exposure resulted in suppression of the SCR performance over the entire temperature range. Sulfur exposure, on the other hand, resulted in deactivation of the Cu-SSZ-13 catalyst mainly at temperatures below 300-350 °C. The use of an oxidation catalyst upstream of the SCR catalyst during the exhaust-exposure protects the SCR catalyst from phosphorus poisoning by capturing phosphorus. The results in this work will improve the understanding of chemical deactivation of SCR catalysts and aid in developing durable aftertreatment systems.

TEKNIK OCH TEKNOLOGIER Kemiteknik hsv//swe
ENGINEERING AND TECHNOLOGY Chemical Engineering hsv//eng
TEKNIK OCH TEKNOLOGIER Kemiteknik Kemiska processer hsv//swe
ENGINEERING AND TECHNOLOGY Chemical Engineering Chemical Process Engineering hsv//eng
TEKNIK OCH TEKNOLOGIER Kemiteknik Annan kemiteknik hsv//swe
ENGINEERING AND TECHNOLOGY Chemical Engineering Other Chemical Engineering hsv//eng
NATURVETENSKAP Kemi Annan kemi hsv//swe
NATURAL SCIENCES Chemical Sciences Other Chemistry Topics hsv//eng
biodiesel exhaust
Cu-SSZ-13
NH3-SCR
phosphorus
sulfur
V2O5-WO3/TiO2
Ammonia
Biodiesel
Catalyst poisoning
Molar ratio
Tungsten compounds
Vanadium pentoxide
Aftertreatment systems
Chemical deactivation
Low temperatures
Oxidation catalysts
SCR catalysts
Temperature range
WO3/TiO2
WO3/TiO2 catalyst
Catalyst deactivation

Englund, Johanna,1988Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)johancar (författare)
Malm, H.Umicore SA (författare)
Feigel, M.Technische Universität München (TUM),Technical University of Munich (TUM) (författare)
Westerberg, B.Scania CV AB (författare)
Regali, F.Scania CV AB (författare)
Skoglundh, Magnus,1965Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)skoglund (författare)
Pettersson, LarsKTH,Kemiteknik,Kungliga Tekniska Högskolan (KTH),Royal Institute of Technology (KTH)(Swepub:kth)u1kcgmtv (författare)
KTHProcessteknologi (creator_code:org_t)

Av författaren/redakt...: Dahlin, Sandra; Englund, Johanna ...; Malm, H.; Feigel, M.; Westerberg, B.; Regali, F.; visa fler...; Skoglundh, Magnu ...; Pettersson, Lars; visa färre...

Om ämnet

TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Kemiteknik; och Kemiska processe ...

TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Kemiteknik; och Annan kemiteknik

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.