Accession Number : ADA586538


Title :   Size and Composition Optimized Nanocatalysts for Propulsion Applications


Descriptive Note : Final rept. Jun 2010-Mar 2013


Corporate Author : YALE UNIV NEW HAVEN CT DEPT OF CHEMICAL ENGINEERING


Personal Author(s) : Pfefferle, Lisa D ; Flytzani-Stephanopoulos, Maria ; Gorte, Raymond ; Haller, Gary ; McEnally, Charles ; Neurock, Matthew ; Vajda, Stefan


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a586538.pdf


Report Date : Oct 2013


Pagination or Media Count : 89


Abstract : In this research we have developed 5 different catalyst formats capable of accelerating the rate of combustion cracking, oxidation and dehydrogenation reactions of jet type fuels. These include: 1) metal nanoclusters covered with a porous nano-oxide; 2) a nanometallic layer on an oxide nanocluster; 3) metal decorated nanoscale oxide shapes; 4) acid functional groups on MWNT; 5) size-selected sub-nanometer size catalyst clusters on carbon-based supports. The practical catalyst formats can be made fuel soluble and most do not use precious metal components. A major accomplishment of this project is our linking the behavior of the model catalyst formats (size selected metal clusters on various substrates) with the practical catalyst analogs. The practical catalyst work was complemented by detailed theoretical and experimental studies on the reactivity of size-selected clusters including studies of support interactions. The links between theory, model catalyst and real catalyst tests are designed to provide a fundamental understanding to aid in the design of active and stable catalysts.


Descriptors :   *CATALYSTS , *CATALYTIC CRACKING , *CATALYTIC OXIDATION , *DEHYDROGENATION , *JET ENGINE FUELS , CARBON NANOTUBES , CHEMICAL COMPOSITION , CRACKING(FRACTURING) , NANOMATERIALS , NANOPARTICLES , SIZES(DIMENSIONS) , SYNTHESIS(CHEMISTRY)


Subject Categories : Organic Chemistry
      Physical Chemistry
      Fuels


Distribution Statement : APPROVED FOR PUBLIC RELEASE