Design and fabrication of an automated temperature programmed reaction system to evaluate 3-way catalysts Ce1−x−y ,(La/Y) x Pt y O2−δ

Autor: R. Srihari, Tinku Baidya, Arup Gayen, M. S. Hegde, G. S. Ramesh
Rok vydání: 2006
Předmět:
Zdroj: Journal of Chemical Sciences. 118:47-55
ISSN: 0973-7103
0253-4134
Popis: A completely automated temperature-programmed reaction (TPR) system for carrying out gas-solid catalytic reactions under atmospheric flow conditions is fabricated to study CO and hydrocarbon oxidation, and NO reduction. The system consists of an all-stainless steel UHV system, quadrupole mass spectrometer SX200 (VG Scientific), a tubular furnace and micro-reactor, a temperature controller, a versatile gas handling system, and a data acquisition and analysis system. The performance of the system has been tested under standard experimental conditions for CO oxidation over well-characterized Ce1-x-y(La/Y)(y)O2-delta catalysts. Testing of 3-way catalysis with CO, NO and C2H2 to convert to CO2, N-2 and H2O is done with this catalyst which shows complete removal of pollutants below 325 degrees C. Fixed oxide-ion defects in Pt substituted Ce1-y(La/Y)(y)O2-y/2 show higher catalytic activity than Pt ion-substituted CeO2
Databáze: OpenAIRE
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