ISIS Neutron and Muon Source Data Journal

Investigating competitive diffusion of methanol, dimethyl ether and water in a microporous catalyst

Abstract: The competitive diffusion of components of the zeolite catalysed methanol to dimethyl ether (DME) process will be investigated using quasi-elastic neutron scattering. The diffusion coefficient of DME will be measured in a commercial sample of zeolite HY at temperatures between 300-400 K in the presence of D2O (the by-product) and CD3OD, methanol will also be measured in the presence of deuterated DME and D2O to understand the difference in diffusivity of the reactant and product mid-reaction. Measurements will also be taken of DME with D2O to investigate the diffusion behaviour upon reaction completion, and the diffusion of DME will be measured without D2O to understand the effect of by-product absence on diffusion. Results will be combined with measurements of pure methanol in the same zeolite sample completing the first neutron study of competitive diffusion in a catalytic process.

Principal Investigator: Professor Richard Catlow
Experimenter: Dr Alexander O'Malley
Experimenter: Mr Wilm Jones
Local Contact: Dr Ian Silverwood
Experimenter: Professor Stewart Parker
Experimenter: Dr Sanghamitra Mukhopadhyay

DOI: 10.5286/ISIS.E.RB1520212

ISIS Experiment Number: RB1520212

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
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Data Citation

The recommended format for citing this dataset in a research publication is as:
[author], [date], [title], [publisher], [doi]

For Example:
Professor Richard Catlow et al; (2015): Investigating competitive diffusion of methanol, dimethyl ether and water in a microporous catalyst , STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1520212

Data is released under the CC-BY-4.0 license.