Preferential CO oxidation over Pt-SnO2/Al2O3 in hydrogen rich streams containing CO2 and H2O (CO removal from H-2 with PROX)


UYSAL G., AKIN A. N. , ÖNSAN Z. İ. , YILDIRIM R.

CATALYSIS LETTERS, cilt.111, ss.173-176, 2006 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 111
  • Basım Tarihi: 2006
  • Doi Numarası: 10.1007/s10562-006-0143-6
  • Dergi Adı: CATALYSIS LETTERS
  • Sayfa Sayıları: ss.173-176

Özet

The effects of reaction gases including CO2 and H2O and temperature on the selective low-temperature oxidation of CO were studied in hydrogen rich streams using a flow micro-reactor packed with a Pt-SnO2/Al2O3 sol-gel catalyst that was initially designed and optimized for operation in the absence of CO2 and H2O. 100% CO conversion was achieved over the 1 wt% Pt-3 wt% SnO2/Al2O3 catalyst at 110 degrees C using a feed composition of 1.0% CO, 1.5% O-2, 25% CO2, 10% H2O, 58% H-2 and He as balance at a space velocity of 24,000 cm(3)/(g h). CO2 in the feed was found to decrease CO conversion significantly while the presence of H2O in the feed increased CO conversion, balancing the effect of CO2.