Fig. 1
From: Selective production of phase-separable product from a mixture of biomass-derived aqueous oxygenates
The catalytic function of water in ABE aqueous solution conversion reaction and proposed reaction pathways. a ABE as feedstock (A:B:E weight ratio is 9:51:1). b ABE with water as feedstock (A:B:E:H2O weight ratio is 9:51:1:22). Reaction conditions: ceria (16.0 g, 14–25 mesh), N2 as carrier gas (flow rate = 33 mL min−1), 400 °C, WHSV = 0.5 h−1. c Pulse reaction of a mixture of n-butanol and D2O (detected by on-line mass spectrometry). Ceria (1.0 g, 14–25 mesh), 10 μL per injection of n-butanol and D2O mixture, Ar as carrier gas (flow rate = 30 mL min−1), 400 °C. The fluctuation of each pulse is due to non-uniform sampling of butanol for each injection (from butanol/D2O emulsion mixture). d Proposed reaction pathways leading to 4-HPO in a fixed-bed reactor with acetone, n-butanol, ethanol, and water as feedstock over ceria-based catalyst
