TY - JOUR
T1 - Isotope effect in formaldehyde steam reforming on Pt/m-ZrO2
T2 - Insight into chemical promotion by alkalis
AU - Martinelli, Michela
AU - Marcelle, Jonas
AU - Cronauer, Donald C.
AU - Kropf, A. Jeremy
AU - Jacobs, Gary
N1 - Publisher Copyright:
© 2023 The Authors
PY - 2023/5
Y1 - 2023/5
N2 - Infrared spectroscopy, temperature programmed reaction mass spectrometry (TP-reaction/MS), and catalyst testing were used to investigate alkali promotion of dehydrogenation selectivity during formaldehyde steam reforming (FSR) on Pt/m-ZrO2. In a preferred pathway, formaldehyde reacts with water forming hydrogen and formate, followed by forward formate decomposition to CO2 and H2. Alkali-doping of 2 wt% Pt/m-ZrO2 increases catalyst basicity, which weakens the formate C–H bond promoting formate dehydrogenation / decarboxylation. Promotion by alkali in FSR was observed through a formate ν(CH) band shift to lower wavenumbers in infrared spectroscopy, and through a decrease in the normal isotope effect in switching from H- to D-labeled formaldehyde in TP-reaction/MS.
AB - Infrared spectroscopy, temperature programmed reaction mass spectrometry (TP-reaction/MS), and catalyst testing were used to investigate alkali promotion of dehydrogenation selectivity during formaldehyde steam reforming (FSR) on Pt/m-ZrO2. In a preferred pathway, formaldehyde reacts with water forming hydrogen and formate, followed by forward formate decomposition to CO2 and H2. Alkali-doping of 2 wt% Pt/m-ZrO2 increases catalyst basicity, which weakens the formate C–H bond promoting formate dehydrogenation / decarboxylation. Promotion by alkali in FSR was observed through a formate ν(CH) band shift to lower wavenumbers in infrared spectroscopy, and through a decrease in the normal isotope effect in switching from H- to D-labeled formaldehyde in TP-reaction/MS.
KW - Alkali
KW - Formaldehyde steam reforming
KW - Hydrogen production
KW - Isotope effect
KW - Platinum / zirconia
KW - Sodium
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U2 - 10.1016/j.catcom.2023.106668
DO - 10.1016/j.catcom.2023.106668
M3 - Article
AN - SCOPUS:85153511025
SN - 1566-7367
VL - 178
JO - Catalysis Communications
JF - Catalysis Communications
M1 - 106668
ER -