Ru alloying with La or Y for ammonia synthesis via integrated dissociative and associative mechanism with superior operational stability - Details

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EI SCIE

Abstract：

The　alloying　of　Ru　with　rare-earth　elements　(REEs)　is　an　effective　approach　for　the　modification　of　the　electronic　structure　of　Ru.　Here,　for　the　first　time,　we　report　the　formation　of　Ru-M　(M　=　La　or　Y)　alloys　that　are　endowed　with　a　completely　new　type　of　active　sites.　Over　the　Ru-M　(M　=　La　or　Y)　catalysts,　N-2　activation　in　ammonia　synthesis　follows　neither　the　well-known　dissociative　nor　the　associative　route　but　rather　a　co-operation　of　both,　leading　to　outstanding　performance.　The　developed　RuLa/HZ　catalyst　exhibits　a　NH3　synthesis　rate　of　14.73　mmol　gcat(-1)　h(-1)　at　400　degrees　C　and　1　MPa　without　obvious　deactivation　in　a　run　of　1756　h　(ca.73　days).　(C)　2021　Elsevier　Ltd.　All　rights　reserved.

Keyword：

Ammonia synthesis DFT calculation Integration of the dissociative and associative mechanism Maximization of electronic effect Ru-M (M=La or Y) alloying

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[ 1 ] [Zhang, Tianhua]Fuzhou Univ, Natl Engn Res Ctr Chem Fertilizer Catalyst, Fuzhou 350002, Fujian, Peoples R China
[ 2 ] [Zhu, Jie]Fuzhou Univ, Natl Engn Res Ctr Chem Fertilizer Catalyst, Fuzhou 350002, Fujian, Peoples R China
[ 3 ] [Peng, Xuanbei]Fuzhou Univ, Natl Engn Res Ctr Chem Fertilizer Catalyst, Fuzhou 350002, Fujian, Peoples R China
[ 4 ] [Deng, Jinxiu]Fuzhou Univ, Natl Engn Res Ctr Chem Fertilizer Catalyst, Fuzhou 350002, Fujian, Peoples R China
[ 5 ] [Zhou, Yanliang]Fuzhou Univ, Natl Engn Res Ctr Chem Fertilizer Catalyst, Fuzhou 350002, Fujian, Peoples R China
[ 6 ] [Ni, Jun]Fuzhou Univ, Natl Engn Res Ctr Chem Fertilizer Catalyst, Fuzhou 350002, Fujian, Peoples R China
[ 7 ] [Wang, Xiuyun]Fuzhou Univ, Natl Engn Res Ctr Chem Fertilizer Catalyst, Fuzhou 350002, Fujian, Peoples R China
[ 8 ] [Liang, Shijing]Fuzhou Univ, Natl Engn Res Ctr Chem Fertilizer Catalyst, Fuzhou 350002, Fujian, Peoples R China
[ 9 ] [Lin, Xingyi]Fuzhou Univ, Natl Engn Res Ctr Chem Fertilizer Catalyst, Fuzhou 350002, Fujian, Peoples R China
[ 10 ] [Au, Chak-tong]Fuzhou Univ, Natl Engn Res Ctr Chem Fertilizer Catalyst, Fuzhou 350002, Fujian, Peoples R China
[ 11 ] [Jiang, Lilong]Fuzhou Univ, Natl Engn Res Ctr Chem Fertilizer Catalyst, Fuzhou 350002, Fujian, Peoples R China
[ 12 ] [Wang, Junjie]Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Shaanxi, Peoples R China
[ 13 ] [Wang, Shiyao]Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Shaanxi, Peoples R China
[ 14 ] [Song, Yi]Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Shaanxi, Peoples R China
[ 15 ] [Zheng, Ying]Western Univ, Dept Chem & Biochem Engn, London, ON, Canada
[ 16 ] [Zheng, Lirong]Chinese Acad Sci, Inst High Energy Phys, Beijing, Peoples R China