ISIS Neutron and Muon Source Data Journal

Proof of concept study on the effect of pre-adsorbed hydrocarbon on the transport of ammonia within an industrially relevant zeolite

Abstract: Diffusion of ammonia within zeolites is of great interest due to applications in the selective catalytic reduction (SCR) reaction in fuel exhausts, reducing harmful NOx compounds to nitrogen. Though this system has been studied previously with small pore zeolites (showing that the presence of a counter ion affects ammonia diffusivity), a real system involves the presence of hydrocarbons in the catalyst which competitively diffuse with ammonia. This proposal aims to measure the effect of the presence of a long and short alkane (deuterated to remove their signal) on the diffusion of ammonia in commercial SCR catalyst zeolite Beta. The metal free zeolite is chosen because counter ion presence was shown previously to affect diffusion. Two loadings of the alkane will be chosen (1 mol/uc and 3 mol/uc) to judge the affect of both concentration and chain length in hindering ammonia diffusion.

Principal Investigator: Dr Paul Collier
Experimenter: Dr Misbah Sarwar
Experimenter: Dr Andrew York
Experimenter: Dr Ian Silverwood
Experimenter: Dr Alexander O'Malley
Experimenter: Dr Iain Hitchcock

DOI: 10.5286/ISIS.E.RB1610302

ISIS Experiment Number: RB1610302

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:
Dr Paul Collier et al; (2016): Proof of concept study on the effect of pre-adsorbed hydrocarbon on the transport of ammonia within an industrially relevant zeolite, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1610302

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