Bimetallic catalysts for low-pressure ring opening

  • Author / Creator
    Shen, Jing
  • Selective ring opening of naphthenic molecules is a preferred reaction to increase cetane number of fuels, and it should result in products with no loss in molecular weight and longer alkyl side chains. Benzocyclopentane (indan) ring opening was studied under hydrogen atmospheric pressure at 609 K with a variety of poly-(vinylpyrrolidone)-stabilized Pd, Ir, and Ru mono- and bimetallic nanocatalysts. The bimetallic catalysts were synthesized either via simultaneous reduction or via hydrogen-sacrificial technology, providing presumably alloy or core-shell structures, respectively. Pd catalysts displayed the lowest activity; Ru showed the highest formation of o-xylene. Monometallic Ir (sphere 1.6 nm) and bimetallic Pd-Ir catalyst (2.7 nm) with presumable core-shell structure showed superior activity and selectivity to desired 2-ethyltoluene and n-propylbenzene, as well as lower cracking as compared to industrial Pt-Ir catalyst.

  • Subjects / Keywords
  • Graduation date
    Spring 2011
  • Type of Item
  • Degree
    Master of Science
  • DOI
  • License
    This thesis is made available by the University of Alberta Libraries with permission of the copyright owner solely for non-commercial purposes. This thesis, or any portion thereof, may not otherwise be copied or reproduced without the written consent of the copyright owner, except to the extent permitted by Canadian copyright law.