Effect of precursors on catalytic activity of Ru/MgO-CeO2 catalyst for ammonia synthesis - Details

author：

Wang, X. (Wang, X..) ^[1] | Wang, R. (Wang, R..) ^[2] | Ni, J. (Ni, J..) ^[3] | Lin, J. (Lin, J..) ^[4] | Wei, K. (Wei, K..) ^[5]

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Scopus PKU CSCD

Abstract：

Ru/MgO-CeO2　catalysts　were　prepared　by　co-precipitation　with　different　precursors,　including　K2RuO4,　Ru(Ac)3,　and　RuCl3,　the　obtained　catalysts　were　characterized　by　X-ray　diffraction,　X-ray　fluorescence,　N2　physisorption,　temperature-programmed　reduction,　and　CO　chemisorption.　The　results　showed　that　the　ammonia　synthesis　activity　of　the　Ru/MgO-CeO2　catalyst　prepared　with　K2RuO4　was　16.0%　at　10　MPa,　450°C,　and　10000　h-1,　which　was　higher　than　those　obtained　with　the　other　two　precursors.　The　turnover　frequency　(TOF)　of　the　Ru/MgO-CeO2　catalyst　prepared　with　K2RuO4　was　higher　than　those　obtained　with　the　other　precursors　under　the　same　reaction　conditions.　The　influence　of　precursors　and　preparation　methods　on　the　structure　and　performance　of　the　catalysts　was　studied.　The　ratio　of　Ru/MgO-CeO2　catalysts　prepared　with　K2RuO4,　Ru(Ac)3,　and　RuCl3　as　precursors　for　ammonia　synthesis　turnover　frequency　is　1.33:1.05:1　under　10　MPa,　425°C,　and　10000　h-1.

Keyword：

Ammonia synthesis; Cerium dioxide; Magnesium oxide; Precursor; Ruthenium

Community：

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

Reprint 's Address：

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

Email：

rwang@fzu.edu.cn

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Source ：

Chinese Journal of Catalysis

ISSN： 0253-9837

CN： 21-1601/O6

Year： 2010

Issue： 12

Volume： 31

Page： 1452-1456

0 . 7 5 2

JCR@2010

1 5 . 7 0 0

JCR@2023

JCR Journal Grade：3

CAS Journal Grade：4

Cited Count：

WoS CC Cited Count：

SCOPUS Cited Count：

ESI Highly Cited Papers on the List： 0 Unfold All

WanFang Cited Count：

Chinese Cited Count：

30 Days PV： 2

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