Study on the spectra of Au/α-Fe2O3 catalysts modified by ZrO2 and Nb2O5 promoters - Details

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Abstract：

A　series　of　Au/α-Fe2O3　catalysts　promoted　with　ZrO2　and　Nb2O5　were　prepared　by　parallel　co-precipitation　method.　Detailed　characterizations　were　conducted　by　techniques　including　UV-Vis-DRS,　XPS,　TEM　and　XRF.　Results　indicated　that　the　enrichment　of　Au,　ZrO2　and　Nb2O5　on　the　surface　induced　by　the　strong　interaction　between　ZrO2　and　Nb2O5　kept　the　nanoparticles　apart,　delaying　sintering.　Performance　tests　carried　out　in　the　reformed　methanol　steam　showed　that　its　CO　conversion　almost　reached　the　maximum　value　of　99%　at　200°C,　and　maintained　a　better　stability　compared　with　unmodified　samples　within　50　h　on-stream.　All　these　indicated　that　ZrO2　and　Nb2O5　promoters　efficiently　improved　the　performance　of　the　Au/α-Fe2O3　catalysts.

Keyword：

Au/α-Fe2O3 catalysts; Promoters; UV-Vis DRS; XPS

Community：

[ 1 ] [Zhang, F.-L.]National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou 350002, China
[ 2 ] [Zheng, Q.]National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou 350002, China
[ 3 ] [Lin, X.-Y.]National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou 350002, China
[ 4 ] [Zhang, H.-H.]National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou 350002, China
[ 5 ] [Li, J.-W.]National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou 350002, China
[ 6 ] [Zhang, Q.]National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou 350002, China

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[Zhang, F.-L.]National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou 350002, China

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Spectroscopy and Spectral Analysis

ISSN： 1000-0593

Year： 2007

Issue： 4

Volume： 27

Page： 781-784

0 . 8 4 3

JCR@2007

0 . 7 0 0

JCR@2023

JCR Journal Grade：3

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ESI Highly Cited Papers on the List： 0 Unfold All

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30 Days PV： 2

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