Strong metal-support interactions of Co-based catalysts facilitated by dopamine for highly efficient ammonia synthesis:: In situ XPS and XAFS spectroscopy coupled with TPD studies - Details

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Abstract：

We　report　a　new　strategy　for　strengthening　metal-support　interaction　and　stabilizing　Co　nanoparticles　at　high　temperature.　Through　the　use　of　dopamine　and　removal　of　carbon　layers　by　thermal　N2　treatment,　ceria-based　Co　catalysts　that　are　efficient　and　highly　stable　for　ammonia　synthesis　can　be　obtained.　The　ammonia　synthesis　rate　at　425　°C　and　1　MPa　is　enhanced　from　3.81　mmolNH3　gcat-1　h-1　over　Co/CeO2　to　19.12　mmolNH3　gcat-1　h-1　over　a　dopamine-mediated　catalyst.　The　superior　catalytic　performances　of　the　dopamine-mediated　Co/CeO2　catalyst　are　associated　with　smaller　crystalline　size,　stronger　metal-support　interaction　and　lower　N2　activation　energy.　©　2019　The　Royal　Society　of　Chemistry.

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[ 1 ] [Wang, X.]National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou Fujian, 350002, China
[ 2 ] [Li, L.]National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou Fujian, 350002, China
[ 3 ] [Zhang, T.]National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou Fujian, 350002, China
[ 4 ] [Lin, B.]National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou Fujian, 350002, China
[ 5 ] [Ni, J.]National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou Fujian, 350002, China
[ 6 ] [Au, C.-T.]National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou Fujian, 350002, China
[ 7 ] [Jiang, L.]National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou Fujian, 350002, China

Reprint 's Address：

[Jiang, L.]National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou UniversityChina

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jll@fzu.edu.cn

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Chemical Communications

ISSN： 1359-7345

Year： 2019

Issue： 4

Volume： 55

Page： 474-477

5 . 9 9 6

JCR@2019

4 . 3 0 0

JCR@2023

ESI HC Threshold：184

JCR Journal Grade：1

CAS Journal Grade：2

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WoS CC Cited Count：

SCOPUS Cited Count： 37

ESI Highly Cited Papers on the List： 0 Unfold All

WanFang Cited Count：

Chinese Cited Count：

30 Days PV： 1

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