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.


Role of acidic silanols and Brønsted acid sites in hierarchically porous SAPO-34 for the production of eta-caprolactam - TOSCA

Abstract: The commercially important polymer Nylon 6 is manufactured by ring-opening polymerization of eta-caprolactam. Industrially, eta-caprolactam is conventionally made by the Beckmann rearrangement of cyclohexanone oxime, a stoichiometric process that generates large quantities of undesirable by-products. Recent work at Southampton has shown that a hierarchically porous silicoaluminophosphate; HP-SAPO-37, is able to achieve near-quantitative yields of eta-caprolactam at temperatures as low as 130 °C. The interaction of the oxime with acidic silanols and Brønsted acid sites is crucial to the mechanism but this is not well-understood. The aim of this proposal is to investigate a series of catalysts with different types of acidity in order to characterise how the interaction of cyclohexanone oxime varies with the different acid groups and hence provide insight into the reaction mechanism.

Principal Investigator: Professor Robert Raja
Experimenter: Miss Stephanie Newland
Experimenter: Dr Stephanie Richardson
Experimenter: Professor Stewart Parker
Experimenter: Dr Ian Silverwood
Experimenter: Professor Richard Catlow
Experimenter: Dr Alexander O'Malley

DOI: 10.5286/ISIS.E.RB1610057

ISIS Experiment Number: RB1610057

Part DOI Instrument Public release date Download Link
10.5286/ISIS.E.75421415 TOSCA 12 May 2019 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; (2016): Role of acidic silanols and Brønsted acid sites in hierarchically porous SAPO-34 for the production of eta-caprolactam - TOSCA, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1610057

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



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