Premium
Effect of Reduction Protocol of Pd Catalysts on Product Distribution in Furfural Hydrogenation
Author(s) -
Date Nandan S.,
Biradar Narayan S.,
Chikate Rajeev C.,
Rode Chandrashekhar V.
Publication year - 2017
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201601790
Subject(s) - furfural , decarbonylation , furfuryl alcohol , catalysis , chemistry , selectivity , hydrogenolysis , product distribution , particle size , formaldehyde , medicinal chemistry , organic chemistry
Single step conversion of furfural to ring hydrogenation and decarbonylation products, 2‐methyltetrahydrofuran (2‐MeTHF) and tetrahydrofuran (THF) in high selectivity was achieved by controlling the particle size of Pd/C catalyst. The particle size variation of Pd/C catalysts in the range of 3.8 to 22 nm could be achieved by employing different reducing agents. Of particular interest was the NaBH 4 reduced catalyst (Pd−B/C), which gave the lowest crystallite size of 4.8 nm due to incorporation of B into the inner lattices of Pd−Pd. This phase was evidenced by a characteristic XRD peak of Pd−B at 2θ=38.85 O as well as a shift of (111) peak (40.07 O ) of Pd towards the lower value (39.8 O ). As compared to formaldehyde reduced catalyst (Pd−F/C), Pd−B/C catalyst completely suppressed the formation of furfuryl alcohol to give > 65 % selectivity to 2‐MeTHF and THF. At 180 O C, almost equal distribution of side chain hydrogenation and ring opening products, 2‐MF (45 %) and PeDO (37 %), respectively, was observed while, higher temperature clearly favoured ring hydrogenation and decarbonylation reactions to give 2‐MeTHF and THF.