Publisher: American Chemical Society (ACS)

Issue: 1

License:

Publication date(s): 2019/01/10 (print) 2018/12/13 (online)

Pages: 417-425

Volume: 123 Issue: 1

Journal: The Journal of Physical Chemistry C

Link: /doi/pdf/10.1021/acs.jpcc.8b08420

The properties of 1-octene adsorbed in zeolite ZSM-5 at 293 K are studied by means of inelastic and quasielastic neutron scatterings (INS and QENS) to investigate interactions relevant to the zeolite solid acid catalysis of fluidized catalytic cracking reactions. The INS spectrum is compared to that recorded for the solid alkene and reveals significant changes of bonding on adsorption at ambient temperatures; the changes are attributed to the oligomerization of the adsorbed 1-octene to form a medium chain n-alkane or n-alkane cation. QENS analysis shows that these oligomers are immobilized within the zeolite pore structure, but a temperature-dependant fraction is able to rotate around their long axis within the pore channels.