Inverse kinetic isotope effect of ammonia decomposition over Ru/CeO2 using deuterated ammonia

被引：1
作者：
Suguro, Takuya [1 ]
Kishimoto, Fuminao [1 ]
Kuramoto, Sota [1 ]
Movick, William J. [1 ]
Takanabe, Kazuhiro [1 ]
机构：
[1] Univ Tokyo, Sch Engn, Dept Chem Syst Engn, 7-3-1 Hongo,Bunkyo Ku, Tokyo, Japan
来源：
CHEMICAL COMMUNICATIONS | 2024年 / 60卷 / 60期
基金：
日本科学技术振兴机构;
关键词：
COX-FREE HYDROGEN; NH3; DECOMPOSITION; RU CATALYST; GENERATION; CLUSTERS; H-2; ADSORPTION; MECHANISM; STORAGE; NI;
D O I：
10.1039/d4cc02372b
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
This study investigated the ammonia decomposition mechanism over Ru/CeO2. Isotopic tests using ND3 revealed that the rate-determining step involves adsorbed nitrogen atoms on Ru. Moreover, an inverse kinetic isotope effect where ND3 decomposition was faster than NH3 was clearly observed. The origin of the inverse effect was explained by the lower D coverage on the catalyst surface compared to H coverage for mitigating the inhibition of ND3 activation.
引用
收藏
页码：7713 / 7716
页数：4
相关论文
共 50 条
  • [31] Efficient ammonia synthesis over Ru/CeO2-PrOx catalysts with controlled Ru dispersion by Ru-Pr interaction
    Kikugawa, Masashi
    Goto, Yoshihiro
    Kobayashi, Keisuke
    Nanba, Tetsuya
    Matsumoto, Hideyuki
    Imagawa, Haruo
    JOURNAL OF CATALYSIS, 2022, 413 : 934 - 942
  • [32] A new high efficiency catalyst of Co-Ni/CeO2 for hydrogen production by ammonia oxidative decomposition at low temperature
    Li, Long
    Zhao, Lifang
    Ma, Zhiqiang
    Li, Chaojie
    Duan, Jihai
    Wang, Weiwen
    INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2024, 50 : 36 - 47
  • [33] Efficient Ru/Y2O3 Catalyst Derived from Ru Nanoparticles on Yttrium Carbonate for Production of Hydrogen from Ammonia Decomposition
    Feng, Ji
    Wan, Ningbo
    Ju, Xiaohua
    Liu, Lin
    Bai, Liguang
    Zhao, Xiaodong
    He, Teng
    CHEMCATCHEM, 2025, 17 (01)
  • [34] CeO2-x modified Ru/γ-Al2O3 catalysts for ammonia decomposition reaction
    Meng, Qinglu
    Liu, Haoxin
    Xu, Kai
    Wang, Weiwei
    Jia, Chunjiang
    JOURNAL OF RARE EARTHS, 2023, 41 (06) : 801 - 809
  • [35] Ammonia decomposition over Ru-coated metal-structured catalysts for COx-free hydrogen production
    Koo, Kee Young
    Im, Hyo Been
    Song, Dahye
    Jung, Unho
    INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2024, 52 (534-545) : 534 - 545
  • [36] Ammonia decomposition kinetics over LiOH-promoted, α-Al2O3 -supported Ru catalyst
    Lamb, Krystina
    Hla, San Shwe
    Dolan, Michael
    INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2019, 44 (07) : 3726 - 3736
  • [37] Liquid Ammonia as a Potential High Heat Sink Fuel via Catalytic Decomposition over Ru/CeO2-Al2O3 Coatings
    Kong, Zhiyuan
    Liu, Sibao
    Liu, Hongwang
    Liu, Guozhu
    ENERGY & FUELS, 2024, 38 (07) : 6538 - 6546
  • [38] Deuterium Inverse Isotopic Effect in Ammonia Synthesis over Ru-Based and Fe-Based Catalysts
    Lin Jingdong
    Liao Daiwei
    Zhang Hongbin
    Wan Huilin
    Tsai Khirui
    CHINESE JOURNAL OF CATALYSIS, 2010, 31 (02) : 153 - 155
  • [39] Plasma-enhanced catalytic ammonia decomposition over ruthenium (Ru/Al2O3) and soda glass (SiO2) materials
    El-Shafie, Mostafa
    Kambara, Shinji
    Hayakawa, Yukio
    JOURNAL OF THE ENERGY INSTITUTE, 2021, 99 : 145 - 153
  • [40] Ru Nanoparticles on Pr2O3 as an Efficient Catalyst for Hydrogen Production from Ammonia Decomposition
    Zhang, Xilun
    Liu, Lin
    Feng, Ji
    Ju, Xiaohua
    Wang, Jiemin
    He, Teng
    Chen, Ping
    CATALYSIS LETTERS, 2022, 152 (04) : 1170 - 1181
12345