TY - JOUR
T1 - Selective hydrogenation of 1,3-butadiene in the presence of 1-butene under liquid phase conditions using structured catalysts
AU - Méndez, Franklin J.
AU - Sanz, Oihane
AU - Montes, Mario
AU - Guerra, Julia
AU - Olivera-Fuentes, Claudio
AU - Curbelo, Susana
AU - Brito, Joaquín L.
N1 - Publisher Copyright:
© 2016 Elsevier B.V.
PY - 2017
Y1 - 2017
N2 - Different aluminium structured substrates (monoliths of 350 and 1100 cpsi; foams of 10, 20 and 40 ppi) have been loaded with NiPd/(CeO2-Al2O3) catalyst by washcoating. To improve the adherence between catalyst particles and metallic surface, aluminium substrates were previously anodized to produce a rough (cracked) surface. Catalytic layers of different thickness have been deposited onto aluminium substrates. The catalytic coatings were characterized measuring their textural properties, adhesion and morphology. These structured catalysts have been tested in the selective hydrogenation of 1,3-butadiene in presence of 1-butene under liquid-phase conditions. The effects of some design parameters over the catalytic performance were studied: catalyst loading (125, 250 or 500 mg), geometry of the structured substrate (monoliths or foams), and porosity (cpsi or ppi). The catalytic results show that foams present better activity than the monoliths. This can be related to better mass and heat transfer in the case of foams. In addition, the catalytic coating thickness influence directly the reaction selectivity; thicker layers produce undesired products (BA and isomers) due to diffusion limitations. However, it seems that the mass transfer of reactants to the surface of the catalyst layer plays a major role than the diffusion of reactants inside the catalyst layer.
AB - Different aluminium structured substrates (monoliths of 350 and 1100 cpsi; foams of 10, 20 and 40 ppi) have been loaded with NiPd/(CeO2-Al2O3) catalyst by washcoating. To improve the adherence between catalyst particles and metallic surface, aluminium substrates were previously anodized to produce a rough (cracked) surface. Catalytic layers of different thickness have been deposited onto aluminium substrates. The catalytic coatings were characterized measuring their textural properties, adhesion and morphology. These structured catalysts have been tested in the selective hydrogenation of 1,3-butadiene in presence of 1-butene under liquid-phase conditions. The effects of some design parameters over the catalytic performance were studied: catalyst loading (125, 250 or 500 mg), geometry of the structured substrate (monoliths or foams), and porosity (cpsi or ppi). The catalytic results show that foams present better activity than the monoliths. This can be related to better mass and heat transfer in the case of foams. In addition, the catalytic coating thickness influence directly the reaction selectivity; thicker layers produce undesired products (BA and isomers) due to diffusion limitations. However, it seems that the mass transfer of reactants to the surface of the catalyst layer plays a major role than the diffusion of reactants inside the catalyst layer.
KW - 1,3-butadiene hydrogenation
KW - Foams
KW - Monoliths
KW - NiPdCe catalysts
KW - Structured catalysts
KW - Washcoating
UR - http://www.scopus.com/inward/record.url?scp=85028276967&partnerID=8YFLogxK
U2 - 10.1016/j.cattod.2016.09.022
DO - 10.1016/j.cattod.2016.09.022
M3 - Artículo
AN - SCOPUS:85028276967
SN - 0920-5861
VL - 289
SP - 151
EP - 161
JO - Catalysis Today
JF - Catalysis Today
ER -