Abstract
Engineering the adsorption of molecules on active sites is an integral and challenging part for the design of highly efficient transition-metal-based catalysts for methanol dehydrogenation. A Mott–Schottky catalyst composed of Ni nanoparticles and tailorable nitrogen-doped carbon-foam (Ni/NCF) and thus tunable adsorption energy is presented for highly efficient and selective dehydrogenation of gas-phase methanol to hydrogen and CO even under relatively high weight hourly space velocities (WHSV). Both theoretical and experimental results reveal the key role of the rectifying contact at the Ni/NCF boundaries in tailoring the electron density of Ni species and enhancing the absorption energies of methanol molecules, which leads to a remarkably high turnover frequency (TOF) value (356 mol methanol mol−1 Ni h−1 at 350 °C), outpacing previously reported bench-marked transition-metal catalysts 10-fold.
Original language | English (US) |
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Pages (from-to) | 2697-2701 |
Number of pages | 5 |
Journal | Angewandte Chemie - International Edition |
Volume | 57 |
Issue number | 10 |
DOIs | |
State | Published - Mar 1 2018 |
Keywords
- adsorption energy
- gas–solid reactions
- heterogeneous catalysis
- Mott–Schottky effect
- nanostructures
ASJC Scopus subject areas
- Catalysis
- General Chemistry