2014 AIChE Annual Meeting

(421m) Packed Bed Packets, Effective Thermal Conductivity and Advantage of in-Situ W ALD

Authors

Staci A. Van Norman - Presenter, University of Colorado Boulder
Jeni Sorli, University of Colorado at Boulder
Ronggui Yang, University of Colorado at Boulder
Joseph W. Tringe, Lawrence Livermore National Lab
John D. Sain, Lawrence Livermore National Lab
John L. Falconer, University of Colorado Boulder
Alan W. Weimer, University of Colorado at Boulder

Tungsten is added to a porous structure in order to increase the effective thermal conductivity (keff) of the starting material and surpass the keff of a packed Al2O3 catalyst support.  The conformal self-limited ALD reaction maintains porous properties of the starting material, preserves surface area of the catalyst support, and improves thermal conductivity.  In-situ W ALD of 25 cycle’s deposit uniformly throughout a packed bed of porous particles and particle internal volume and display increased keff.  An original sample preparation technique was used for measuring thermal conductivity of packed beds coated by ALD.