One-pot selective conversion of C5-furan into 1,4-pentanediol over bulk Ni–Sn alloy catalysts in an ethanol/H₂O solvent mixture

Abstract

The synergistic actions between an inexpensive bulk Ni–Sn(1.5) alloy, hydrogen gas, and an ethanol/H2O solvent mixture selectively assisted the one pot conversion of C5-furan compounds to 1,4-pentanediol with outstanding yields up to 92%.

One-pot Selective Conversion of Biomass-derived Furfural into Cyclopentanone/Cyclopentanol over TiO2 Supported Bimetallic Ni-M (M = Co, Fe) Catalysts

“…Meanwhile, in 2-propanol/H2O solvent resulted 4.0% CPL at 87.2% conversion of FFald (entry 5). These results confirmed that the solvent significantly inhibited the C=C hydrogenation as reported previously [19,21,28]. Therefore, it can be concluded that ethanol/H2O is suitable solvent for the catalytic conversion of FFald to CPL or CPO in presence of bimetallic catalysts.…”

“…The formation of FFalc was the first step then rearrangement of FFalc structure occurred on the acidic surface of bimetallic Ni-Sn alloy catalysts [20][21]. Therefore, similar approach would be applicable to the catalytic conversion of FFald over bimetallic Ni-Fe(3.0)/TiO2 catalyst.…”

“…In our previous reports, the synthetic pro-cedure for bimetallic Ni-based with second metals of Sn, In, Co, and Fe applied for chemoselective hydrogenation of biomassderived furfural, levulinic acid, and dodecanoic acid, have developed. Most recently, the bulk bimetallic Ni-Sn alloy for hydrogenation and rearrangement of FFald in H2O or H2O/ethanol solvents and provided CPO and CPL as minor products was applied [20][21]. Therefore, in the present report, an extended investigation on the catalytic conversion of FFald and FFalc using bimetallic Ni-Co(3.0) and Ni-Fe(3.0) supported on TiO2 (denoted as Ni-Co(3.0)/TiO2 and Ni-Fe(3.0)/TiO2 whereas 3.0 is Ni/Co or Ni/Fe molar ratio based on the feeding ratio) is described.…”

Selective Conversion of 2-Methylfuran to 1,4-Pentanediol Catalyzed by Bimetallic Ni-Sn Alloy

“…formic acid or acetic glacial), the use of additives is not desirable and should be avoided if possible, as suggested by Schniepp et al [10] and Leuck et al [39] Especially at relatively higher temperature and initial H2 pressure, the formation of 1,4-PeD are strongly influenced by both those parameters as shown in Figure 5 and Figure 6. Therefore, we conclude that our AlOH or -Al2O3 supported Ni-Sn(3.0) and Ni-Sn(1.5) alloy catalysts are suitable for the hydrolysis-hydrogenation reaction of 2-MeF to produce a high valuable 1,4-PeD (with yield up to 64%) product under milder reaction conditions [43].…”

“…NH3-TPD measurements show the differences in the surface acidity (e.g., part of strong acid, >923 K) between AlOH or -Al2O3 and AC supports ( Figure 4 and Table 1). The strong acid site may able to interact with C=C bond of furan ring, protonated, and then hydrolysed in presence of ethanol/H2O [40][41][42][43]. Note to be important that over AlOH or -Al2O3 supported Ni-Sn(3.0) catalysts, no side polymerization product was observed within the reactions.…”