Effects of dual structure promoters on Ru/AC catalyst for ammonia synthesis - Details

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Abstract：

The　thermal　stability　of　the　Ru-Ba-K/AC　catalysts　promoted　with　single　structural　additive　is　poor　for　ammonia　synthesis　under　the　conditions　of　high　temperature　and　high　pressure,　but　the　stability　could　be　sufficient　improved　by　addition　of　samarium　promoter.　Results　show　that　the　stability　is　remarkably　improved　and　catalyst　activity　is　weak　affected　when　samarium　content　was　0.5%.　The　stability　is　further　strengthen,　but　a　significant　reduction　of　the　catalytic　activity　is　observed　when　samarium　content　is　higher　than　1%.　The　main　reasons　for　significantly　improved　stability　could　be　that　the　doping　improved　the　sintering　resistance　of　the　structural　additives,　and　methanation　resistance　by　suppressing　the　hydrogen　adsorption　on　the　surface　of　the　ruthenium.

Keyword：

Activity; Ammonia synthesis; Promoter; Ru catalyst; Stability

Community：

[ 1 ] [Ni, J.]National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou 350002, China
[ 2 ] [Liu, B.-Y.]National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou 350002, China
[ 3 ] [Zhu, Y.-L.]National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou 350002, China
[ 4 ] [Chen, G.]National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou 350002, China
[ 5 ] [Lin, J.-X.]National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou 350002, China
[ 6 ] [Wei, K.-M.]National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou 350002, China

Reprint 's Address：

[Ni, J.]National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou 350002, China

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Source ：

Journal of Molecular Catalysis

ISSN： 1001-3555

Year： 2013

Issue： 4

Volume： 27

Page： 371-376

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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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