TY - JOUR
T1 - Pd/C-CaO-catalyzed Α-alkylation and hydrodeoxygenation of an acetone-butanol-ethanol mixture for biogasoline synthesis
AU - Vo, Huyen Thanh
AU - Yeo, Seung Mi
AU - Dahnum, Deliana
AU - Jae, Jungho
AU - Hong, Chang Seop
AU - Lee, Hyunjoo
N1 - Funding Information:
We would like to acknowledge the financial support from the R&D Convergence Program of NST (National Research Council of Science & Technology) of Republic of Korea/KIST (Korea Institute of Science and Technology) (2E26550).
Publisher Copyright:
© 2016 Elsevier B.V.
PY - 2017
Y1 - 2017
N2 - A solvent-free α-alkylation of acetone with butanol and ethanol was conducted using a mixture of Pd/C and CaO as heterogeneous catalysts. After reaction at 180 °C for 20 h, alkylated products, including C5-C11ketones and alcohols, were obtained with a total yield of 78.1%. After this α-alkylation, consecutive hydrodeoxygenation at 270 °C for 20 h under H2at 500 psig yielded 74.7% C5–C11alkanes based on the amount of acetone. The product could be used as a bio-gasoline. After alkylation, the catalyst was isolated and characterized using XRD, TGA, XPS, and TEM to elucidate the deactivation of the catalyst. The main reason was found to be decreased basicity of Ca species by conversion of CaO to CaCO3during the reaction. The Pd/C particles were slightly agglomerated after alkylation, but still retained their catalytic activity during successive reuses for the alkylation reaction. In subsequent runs, the activity of the used catalyst could be recovered by adding a sufficient amount of CaO, or by decarboxylation of CaCO3to CaO at 500 °C, under H2.
AB - A solvent-free α-alkylation of acetone with butanol and ethanol was conducted using a mixture of Pd/C and CaO as heterogeneous catalysts. After reaction at 180 °C for 20 h, alkylated products, including C5-C11ketones and alcohols, were obtained with a total yield of 78.1%. After this α-alkylation, consecutive hydrodeoxygenation at 270 °C for 20 h under H2at 500 psig yielded 74.7% C5–C11alkanes based on the amount of acetone. The product could be used as a bio-gasoline. After alkylation, the catalyst was isolated and characterized using XRD, TGA, XPS, and TEM to elucidate the deactivation of the catalyst. The main reason was found to be decreased basicity of Ca species by conversion of CaO to CaCO3during the reaction. The Pd/C particles were slightly agglomerated after alkylation, but still retained their catalytic activity during successive reuses for the alkylation reaction. In subsequent runs, the activity of the used catalyst could be recovered by adding a sufficient amount of CaO, or by decarboxylation of CaCO3to CaO at 500 °C, under H2.
KW - ABE mixture
KW - Aldol-condensation
KW - Biofuel
KW - C–C coupling
KW - Hydrodeoxygenation
UR - http://www.scopus.com/inward/record.url?scp=85028259779&partnerID=8YFLogxK
U2 - 10.1016/j.cej.2016.11.044
DO - 10.1016/j.cej.2016.11.044
M3 - Article
AN - SCOPUS:85028259779
SN - 1385-8947
VL - 313
SP - 1486
EP - 1493
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
ER -