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Neutron Insights into Sorption Enhanced Methanol Catalysis
Marin Nikolic1,2, Luke Daemen3, Anibal J Ramirez-Cuesta3
1Laboratory for Advanced Analytical Technologies, Empa - Swiss Federal Laboratories for Material Science and Technology, Überlandstrasse 129, 8600 Dübendorf, Switzerland.
Topics in Catalysis
|November 1, 2021
Summary
Sorption-enhanced methanol production uses a catalyst to improve yields. Inelastic neutron scattering revealed how water's changing pressure affects reaction pathways during this process.
Area of Science:
- Chemical Engineering
- Catalysis Science
- Materials Science
Background:
- Sorption-enhanced methanol production shifts equilibrium for higher yields.
- Complex catalysts can lead to side products and complicate mechanism analysis.
- High intermediate concentrations in sorbents enable advanced spectroscopic analysis.
Purpose of the Study:
- To elucidate the reaction mechanism in sorption-enhanced methanol production.
- To investigate the influence of water partial pressure on reaction pathways.
- To validate findings using model catalysts and inelastic neutron scattering (INS).
Main Methods:
- Utilizing inelastic neutron scattering (INS) spectroscopy for post-mortem analysis.
- Conducting experiments with zeolite sorbents and model catalysts.
- Analyzing changes in reaction paths influenced by water adsorption saturation.
Main Results:
- INS data revealed a shift in the reaction path during sorption catalysis.
- Varying water partial pressure significantly impacts water-involved reaction steps.
- Model catalyst experiments corroborated the findings from INS analysis.
Conclusions:
- Water partial pressure, influenced by zeolite saturation, is a critical factor in sorption-enhanced methanol production.
- INS spectroscopy is effective in revealing reaction mechanism changes in complex catalytic systems.
- Understanding these dynamics can optimize methanol synthesis processes.
Keywords:
CO2 hydrogenationDimethyl etherInelastic neutron scatteringMethanolSorption enhanced catalysisMore Related Videos
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