TRANSPORT MECHANISM OF ELECTROLYTE VAPOR TO REFORMING CATALYST

Citation
M. Matsumura et C. Hirai, TRANSPORT MECHANISM OF ELECTROLYTE VAPOR TO REFORMING CATALYST, Industrial & engineering chemistry research, 37(5), 1998, pp. 1793-1798
Citations number
9
Categorie Soggetti
Engineering, Chemical
ISSN journal
08885885
Volume
37
Issue
5
Year of publication
1998
Pages
1793 - 1798
Database
ISI
SICI code
0888-5885(1998)37:5<1793:TMOEVT>2.0.ZU;2-A
Abstract
The transport mechanism of electrolyte vapor to internal reforming cat alyst is studied by combining two kinds of experiments: post-test anal yses of catalyst and out-of-cell tests measuring the transfer rate of electrolyte vapor in the gas phase. In the post-test analyses K and Li pickups show a different behavior: the K pickup shows a saturated beh avior around 1.1 wt % pickup after a short period of time, while the L i pickup shows a steady increase during the life of the pickup. As a t ransport mechanism electrolyte transfer through the gas phase is concl uded to be the most likely path. The quick K pickup compared to Li is explained by the difference of the transfer rate in the gas phase (4.4 x 10(-11) mol of K/cm(2)/s versus 1.7 x 10(-12) mol of Li/cm(2)/s). T he concentration of the electrolyte vapor obtained is 1.4 x 10(-6) for K and 1.3 x 10(-8) for Li as a mole fraction in a reducing atmosphere , at 0.1MPa, and at 650 degrees C.