Mg(Al)O supported Ru and Rh catalysts with low loading of active metal (0.5wt.%) were tested in the steam reforming (SR) of acetic acid (AA) to hydrogen rich mixtures. Two synthetic procedures were adopted to deposit metal nanoparticles on support material: conventional impregnation from metal chlorides aqueous solutions and size-controlled metal nanoparticles (SCMNPs) deposition method. SCMNP derived Ru catalysts showed good performances fully comparable to standard Rh based systems. After 20h t.o.s. at reaction temperature of 700°C, steam-to-carbon ratio of 3 and weight hourly space velocity of 6h-1, Ru catalysts showed 100% conversion and hydrogen yield higher than 70%. The presence of well formed metal nanoparticles and the residual hydrotalcite present in the support play a determinant role in limiting the deactivation by coke deposition and by nanoparticles sintering.

Well-formed, size-controlled ruthenium nanoparticles active and stable for acetic acid steam reforming

BOSSOLA, FILIPPO;RECCHIA, SANDRO;DAL SANTO, VLADIMIRO
2016-01-01

Abstract

Mg(Al)O supported Ru and Rh catalysts with low loading of active metal (0.5wt.%) were tested in the steam reforming (SR) of acetic acid (AA) to hydrogen rich mixtures. Two synthetic procedures were adopted to deposit metal nanoparticles on support material: conventional impregnation from metal chlorides aqueous solutions and size-controlled metal nanoparticles (SCMNPs) deposition method. SCMNP derived Ru catalysts showed good performances fully comparable to standard Rh based systems. After 20h t.o.s. at reaction temperature of 700°C, steam-to-carbon ratio of 3 and weight hourly space velocity of 6h-1, Ru catalysts showed 100% conversion and hydrogen yield higher than 70%. The presence of well formed metal nanoparticles and the residual hydrotalcite present in the support play a determinant role in limiting the deactivation by coke deposition and by nanoparticles sintering.
2016
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84940094025&partnerID=40&md5=1a0258b7e3a6c704279c4c17754e51e8
Acetic acid; Hydrogen; Magnesium aluminum mixed oxide; Size-controlled ruthenium nanoparticles; Steam reforming;
Bossola, Filippo; Evangelisti, C.; Allieta, M.; Psaro, R.; Recchia, Sandro; DAL SANTO, Vladimiro
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11383/2056837
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