Flame Spray Pyrolysis as a Synthesis Platform to Assess Metal Promotion in In <sub>2</sub> O <sub>3</sub> ?Catalyzed CO <sub>2</sub> Hydrogenation
نویسندگان
چکیده
A plethora of metal promoters have been applied to enhance the performance In2O3 in CO2 hydrogenation methanol, a prospective energy carrier. However, lack systematic catalyst preparation and evaluation precludes direct comparison their speciation promotional effects, consequently, design an optimal system. Herein, flame spray pyrolysis (FSP) is employed as standardized synthesis method introduce nine (0.5 wt.%) into In2O3. Methanol productivity generally increased on M-In2O3 with selectivity following Pd ? Pt > Rh Ru Ir Ni Co Ag Au. In-depth characterization, kinetic analyses, theoretical calculations reveal range metal-dependent which dictate architecture degree promotion. Atomically-dispersed (Pd, Pt, Rh, Ru, Ir) grant highest improvement performance, particularly markedly promote hydrogen activation while hindering undesired CO formation. In contrast, metals clustered (Ni Co) nanoparticle (Ag Au) forms display moderate no promotion, respectively. This study provides atomic-level understanding promotion based unified protocol, highlights potential FSP engineer complex catalytic systems toward more efficient transformations.
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ژورنال
عنوان ژورنال: Advanced Energy Materials
سال: 2022
ISSN: ['1614-6832', '1614-6840']
DOI: https://doi.org/10.1002/aenm.202103707