Catalytic ammonia decomposition to COx-free hydrogen over ruthenium catalyst supported on alkali silicates

被引：28

作者：

Fu Zhiqiang ^{[1
]}

Wang Ziqing ^{[1
]}

Li Dexing ^{[1
]}

Lin Jianxin ^{[2
]}

Yu Lingzhi ^{[1
]}

Wu Qin ^{[1
]}

Wei Zhong ^{[1
]}

机构：

[1] Shihezi Univ, Sch Chem & Chem Engn, Key Lab Green Proc Chem Engn Xinjiang Bingtuan, Shihezi 832003, Peoples R China

[2] Fuzhou Univ, Natl Engn Res Ctr Chem Fertilizer Catalyst, Fuzhou 350002, Fujian, Peoples R China

来源：

FUEL | 2022年 / 326卷

基金：

中国国家自然科学基金;

关键词：

Ammonia decomposition; Hydrogen energy; Ruthenium catalyst; Silicates support; Electronic metal-support interaction; RU/GAMMA-AL2O3; CATALYSTS; PARTICLE-SIZE; RU CATALYST; GENERATION; OXYGEN; SIO2; NANOPARTICLES; ZRO2; XPS;

D O I：

10.1016/j.fuel.2022.125094

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

A series of alkali metal silicates A(2)SiO(3) (A = Li, Na and K) were synthesized by a sol-gel method route and employed as support for Ru nanoparticles to catalyze NH3 decomposition. The NH3 conversion can be ranked as the order of Ru/K2SiO3 > Ru/Na2SiO3 > Ru/Li2SiO3 > Ru/SiO2 at the same conditions, and Ru/K2SiO3 displays the highest NH3 conversion of 60.5% with the TOF (H2) of 2.03 s(-1) under the weight hourly space velocity (GHSV) of 30,000 mL.g(cat)(-1).h(-1) at 450 degrees C. The combination results of different characterization indicate that the formation of alkali metal silicates can increase the strength and number of basic sites, and the strong electronic metalsupport interaction (EMSI) would appear between Ru particles and oxygen vacancies in A(2)SiO(3) structure at reduction conditions. The presence of EMSI can result in the higher Ru dispersion and enhanced electronic density of Ru particles over A(2)SiO(3), greatly facilitating the decomposition of NH3 to COx-free hydrogen.

引用

页数：9

共 66 条

[11] Ru-doped, oxygen-vacancy-containing CeO2 nanorods toward N2 electroreduction [J].

Ding, Yu ;

Huang, Linsong ;

Zhang, Junbo ;

Guan, Anxiang ;

Wang, Qihao ;

Qian, Linping ;

Zhang, Lijuan ;

Zheng, Gengfeng .

JOURNAL OF MATERIALS CHEMISTRY A, 2020, 8 (15) :7229-7234

[12] Highly Dispersed Ruthenium Nanoparticles on Y2O3 as Superior Catalyst for Ammonia Decomposition [J].

Feng, Ji ;

Liu, Lin ;

Ju, Xiaohua ;

Wang, Jiemin ;

Zhang, Xilun ;

He, Teng ;

Chen, Ping .

CHEMCATCHEM, 2021, 13 (06) :1552-1558

[13]

Feng KC, 2012, CHINESE J PHYS, V50, P932, DOI 10.6122/CJP.50.932

[14] Reducing-atmosphere resistant mechanism on microwave dielectric enhancement of CaMgSi2O6 glass-ceramics [J].

Feng, Kuei-Chih ;

Chen, Pin-Yi ;

Wu, Po-Hsien ;

Chen, Cheng-Sao ;

Tu, Chi-Shun .

JOURNAL OF ALLOYS AND COMPOUNDS, 2018, 765 :75-81

[15] XPS and EELS characterization of Mn2SiO4, MnSiO3 and MnAl2O4 [J].

Grosvenor, A. P. ;

Bellhouse, E. M. ;

Korinek, A. ;

Bugnet, M. ;

McDermid, J. R. .

APPLIED SURFACE SCIENCE, 2016, 379 :242-248

[16] Ammonia decomposition by ruthenium nanoparticles loaded on inorganic electride C12A7:e- [J].

Hayashi, Fumitaka ;

Toda, Yoshitake ;

Kanie, Yoshimi ;

Kitano, Masaaki ;

Inoue, Yasunori ;

Yokoyama, Toshiharu ;

Hara, Michikazu ;

Hosono, Hideo .

CHEMICAL SCIENCE, 2013, 4 (08) :3124-3130

[17] Transesterification of used cooking oil over alkali metal (Li, Na ,K) supported rice husk silica as potential solid base catalyst [J].

Hindryawati, Noor ;

Maniam, Gaanty Pragas ;

Karim, Md. Rezaul ;

Chong, Kwok Feng .

ENGINEERING SCIENCE AND TECHNOLOGY-AN INTERNATIONAL JOURNAL-JESTECH, 2014, 17 (02) :95-103

[18] Stable Ir/SiO2 catalyst for selective hydrogenation of crotonaldehyde [J].

Hong, Xiao ;

Li, Bo ;

Wang, Yuejuan ;

Lu, Jiqing ;

Hu, Gengshen ;

Luo, Mengfei .

APPLIED SURFACE SCIENCE, 2013, 270 :388-394

[19] Ceria-supported ruthenium clusters transforming from isolated single atoms for hydrogen production via decomposition of ammonia [J].

Hu, Xiu-Cui ;

Fu, Xin-Pu ;

Wang, Wei-Wei ;

Wang, Xu ;

Wu, Ke ;

Si, Rui ;

Ma, Chao ;

Jia, Chun-Jiang ;

Yan, Chun-Hua .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2020, 268 (268)

[20] Hydrogen production via catalytic decomposition of NH3 using promoted MgO-supported ruthenium catalysts [J].

Hu, Xiu-Cui ;

Wang, Wei-Wei ;

Si, Rui ;

Ma, Chao ;

Jia, Chun-Jiang .

SCIENCE CHINA-CHEMISTRY, 2019, 62 (12) :1625-1633

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