Ammonia synthesis over ruthenium catalysts using barium-doped zirconia as supports prepared by citric acid method - Details

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Abstract：

Barium-promoted　zirconia　(Ba-ZrO2)　was　synthesized　by　the　citric　acid　method　and　used　as　supports　for　Ru/Ba-ZrO2　catalysts,　which　were　prepared　by　incipient　wetness　impregnation　with　K2RuO4　as　precursor.　The　obtained　Ba-ZrO2　and　catalysts　were　characterized　by　X-ray　diffraction　and　CO2　temperature-programmed　desorption.　The　effect　of　Ba　content　on　the　structure　and　catalytic　activity　of　K-Ru/Ba-ZrO2　catalysts　is　discussed.　The　formation　of　BaZrO3　can　improve　significantly　the　catalytic　activity　of　Ru/Ba-ZrO2　for　ammonia　synthesis.　The　ammonia　concentration　and　rate　of　ammonia　synthesis　of　the　K-Ru/Ba-ZrO2　catalyst　(molar　ratio　of　Ba:Zr　is　1:1)　were　9.24%　and　29.77　mmol/(g·h),　respectively,　at　425°C,　5.0　MPa,　and　10000　h-1.　Improvements　in　electron　conductivity　and　the　basic　nature　of　the　catalyst　may　be　the　main　reasons　for　such　high　catalytic　activity　in　ammonia　synthesis.

Keyword：

Ammonia synthesis; Barium; Electronic conductivity; Ruthenium; Zircona

Community：

[ 1 ] [Lin, J.]National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou 350002, Fujian, China
[ 2 ] [Wang, Z.]National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou 350002, Fujian, China
[ 3 ] [Zhang, L.]National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou 350002, Fujian, China
[ 4 ] [Ni, J.]National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou 350002, Fujian, China
[ 5 ] [Wang, R.]National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou 350002, Fujian, China
[ 6 ] [Wei, K.]National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou 350002, Fujian, China

Reprint 's Address：

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

Email：

lin3jx@fzu.edu.cn

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Source ：

Chinese Journal of Catalysis

ISSN： 0253-9837

CN： 21-1601/O6

Year： 2012

Issue： 7

Volume： 33

Page： 1075-1079

1 . 3 0 4

JCR@2012

1 5 . 7 0 0

JCR@2023

JCR Journal Grade：2

CAS Journal Grade：4

Cited Count：

WoS CC Cited Count：

SCOPUS Cited Count： 21

ESI Highly Cited Papers on the List： 0 Unfold All

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Chinese Cited Count：

30 Days PV： 0

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