Loading...
Please wait, while we are loading the content...
Understanding the Role of Molecular Di ff usion and Catalytic Selectivity in Liquid-Phase Beckmann Rearrangement
| Content Provider | Semantic Scholar |
|---|---|
| Author | Malley Chapman, Stephanie Kezina, Julija Silverwood, I. P. Mukhopadhyay, Sanghamitra Carravetta, Marina Parker, Stewart F. |
| Copyright Year | 2017 |
| Abstract | Understanding the role of diffusion in catalysis is essential in the design of highly active, selective, and stable industrial heterogeneous catalysts. By using a combination of advanced in situ spectroscopic characterization tools, particularly quasi-elastic and inelastic neutron scattering, we outline the crucial differences in diffusion modes and molecular interactions of active sites within solid-acid catalysts. This, coupled with 2D solid-state NMR and probe-based FTIR spectroscopy, reveals the nature of the active site in our SAPO37 catalyst and affords detailed information on the evolution of solid-acid catalysts that can operate at temperatures as low as 130 °C, for the Beckmann rearrangement of cyclohexanone oxime to ε-caprolactam (precursor for Nylon-6). The versatility of this approach leads to structure−property correlations that contrast the dynamics of the diffusion process in the different materials studied. Our results illustrate the power of these techniques in unravelling the interplay between active site and molecular diffusion in single-site heterogeneous catalysts, which can play a vital role in designing low-temperature, sustainable catalytic processes. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://eprints.soton.ac.uk/406724/3/acscatal_2E6b03641.pdf |
| Alternate Webpage(s) | http://orca-mwe.cf.ac.uk/100094/1/acscatal.6b03641.pdf |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Catalysis DNA Sequence Rearrangement Interaction Kripke semantics Magnetic Resonance Imaging Neutrons Oximes Selectivity (electronic) Tree rearrangement cyclohexanone oxime nylon 6 |
| Content Type | Text |
| Resource Type | Article |
