ISIS Neutron and Muon Source Data Journal

This is a page describing data taken during an experiment at the ISIS Neutron and Muon Source. Information about the ISIS Neutron and Muon Source can be found at https://www.isis.stfc.ac.uk.


Clarifying the interaction between cyclic oxime and acidic silanols in hierarchical SAPO-34 and AlPO-5 for the Beckmann rearrangement

Abstract: Caprolactam (CL) is a high-value chemical and precursor to nylon-6. Industrially, a harsh, liquid acid catalyst transforms C6-oxime to CL but due to the risk and inefficiency of the process, a solid-acid alternative is desirable. Whilst silicoaluminophosphates (SAPOs) have been successful in this domain, their small micropores suffer mass transport limitations. Hierarchically-porous (HP) SAPOs contain an auxiliary mesoporous network generated by soft-templating with surfactant. As well as improved mass transport, the synthesis introduces pendant silanols in the mesopores, with their own catalytic potential. Interestingly, earlier INS studies revealed the loss of oxime and catalyst O-H modes, indicating that the silanols can interact with oxime at low temperature, in a solid-state mixture. Our aim is to clarify the nature of these interactions and to investigate the loss of the O-H bands.

Principal Investigator: Professor Robert Raja
Experimenter: Dr Stephanie Richardson
Experimenter: Dr Alexander O'Malley
Experimenter: Professor Stewart Parker

DOI: 10.5286/ISIS.E.RB1710094

ISIS Experiment Number: RB1710094

Part DOI Instrument Public release date Download Link
10.5286/ISIS.E.86390213 TOSCA 10 May 2020 Download

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
Select the data format above to find out more about it.

Data Citation

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

For Example:
Professor Robert Raja et al; (2017): Clarifying the interaction between cyclic oxime and acidic silanols in hierarchical SAPO-34 and AlPO-5 for the Beckmann rearrangement , STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1710094

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



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