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Towards practical application of lanthanum ferrite catalysts for NO reduction with H2

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Towards practical application of lanthanum ferrite catalysts for

NO reduction with H2

Authors

Stefania Furfori, Samir Bensaid, Nunzio Russo, Debora Fino

Publication date

2009/11/15

Journal

Chemical Engineering Journal

Volume 154 Issue 1-3 Pages 348-354 Publisher Elsevier Description

A series of perovskite-type catalysts (LaFeO3, La0.8Sr0.2FeO3, Pd/La0.8Sr0.2FeO3,

La0.8Sr0.2Fe0.9Pd0.1O3, La0.7Sr0.2Ce0.1FeO3, Pd/La0.7Sr0.2Ce0.1FeO3 and

La0.7Sr0.2Ce0.1Fe0.9Pd0.1O3) has been prepared by the solution combustion synthesis method

and fully characterized by XRD, BET, FESEM and TPD/R analyses. The performance of these catalysts towards the NO reduction mechanism by H2 has been evaluated in a

temperature-programmed reaction apparatus (TPRe) in the absence and in the presence of oxygen. The catalysts have been studied in the 25–350 °C temperature range, and significant catalytic activities were measured at 150–250 °C. Among the catalysts screened, La0.8Sr0.2Fe0.9Pd0.1O3, showed the best performance. Hence, it was deposited directly over a

ceramic honeycomb monolith by in situ SCS, tested in a lab-scale test rig, then submitted to the specific ageing protocol …

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