Fig. 7: Promoting effects of gaseous oxygenate additives on BTX formation rates.
From: Hydrogen spillover assisted by oxygenate molecules over nonreducible oxides
(a) a function of H2 partial pressure with or without 0.5 kPa oxygenate additive. Reaction condition: 450 °C, 0.5 kPa guaiacol, balanced by N2, methanol and ethanol used as the precursors of formaldehyde and acetaldehyde, respectively, 1Pt@-10Fe@SiO2 as catalyst. Solid curves indicate trends. (b) correlation between the maximum rBTX (rBTX,max) achieved on 1Pt@-10Fe@SiO2 and DFT-derived HAE values for various oxygenate additives (rBTX,max taken from Fig. 7a; HAE taken from Supplementary Fig. 10). (c) An illustration of the proposed oxygenate-assisted hydrogen spillover mechanism over the inert SiO2 support.
