scholarly journals Enhanced Ammonia Synthesis Activity of Ceria-Supported Ruthenium Catalysts Induced by CO Activation

ACS Catalysis ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 1331-1339
Author(s):  
Bingyu Lin ◽  
Biyun Fang ◽  
Yuyuan Wu ◽  
Chunyan Li ◽  
Jun Ni ◽  
...  
Keyword(s):  
Ammonia Synthesis ◽  
Ruthenium Catalysts ◽  
Co Activation ◽  
Synthesis Activity

scholarly journals Enhanced Ammonia Synthesis Activity of Ceria-Supported Ruthenium Catalysts Induced by CO Activation

2020 ◽  
Author(s):  
Bingyu Lin ◽  
Biyun Fang ◽  
Yuyuan Wu ◽  
Chunyan Li ◽  
Jun Ni ◽  
...  
Keyword(s):  
Ammonia Synthesis ◽  
Ruthenium Catalysts ◽  
Co Activation ◽  
Synthesis Activity

scholarly journals Co/Ba/La2O3 catalyst for ammonia synthesis under mild reaction conditions

2021 ◽  
Author(s):  
Katsutoshi Nagaoka ◽  
Shin-ichiro Miyahara ◽  
Katsutoshi Sato ◽  
Yuta Ogura ◽  
Kotoko Tsujimaru ◽  
...  
Keyword(s):  
Ammonia Synthesis ◽  
Nickel Catalysts ◽  
Ruthenium Catalysts ◽  
Synthesis Rate ◽  
Turnover Frequency ◽  
Reaction Conditions ◽  
Synthesis Activity ◽  
Co Nanoparticles ◽  
Ammonia Poisoning ◽  
Nanoparticle Catalyst

Ruthenium catalysts may allow realization of renewable energy–based ammonia synthesis processes using mild reaction conditions (<400 °C, <10 MPa). However, ruthenium is relatively rare and therefore expensive. Here, we report a Co nanoparticle catalyst loaded on a basic Ba/La2O3 support and pre-reduced at 700 °C (Co/Ba/La2O3_700red) that showed higher ammonia synthesis activity at 350 °C and 1.0–3.0 MPa than two benchmark Ru catalysts, Cs+/Ru/MgO and Ru/CeO2. The synthesis rate of the catalyst at 350 °C and 1.0 MPa (19.3 mmol h−1g−1) was 8.0 times that of Co/Ba/La2O3_500red and 6.9 times that of Co/La2O3_700red. The catalyst showed activity at temperatures down to 200 °C. High-temperature reduction induced formation of a BaO-La2O3 nano-fraction around the Co nanoparticles, which increased turnover frequency, inhibited Co nanoparticle sintering, and suppressed ammonia poisoning. These strategies may also be appliable to nickel catalysts.

ChemInform Abstract: Influence of Method of Preparation on Ammonia Synthesis Activity of Cesium Promoted Ruthenium Catalysts Supported on Active Carbon (AC).

ChemInform ◽  
2010 ◽  
Vol 26 (9) ◽  
pp. no-no
Author(s):  
S. K. MASTHAN ◽  
K. S. R. RAO ◽  
P. K. RAO ◽  
L. KALUSCHNYAYA ◽  
S. M. YUNUSOV ◽  
...  
Keyword(s):  
Active Carbon ◽  
Ammonia Synthesis ◽  
Ruthenium Catalysts ◽  
Synthesis Activity

Improved ammonia synthesis activity of Ce doped barium tantalate supported Ru catalysts

2021 ◽  
Author(s):  
Jia Huang ◽  
Yushi Zhao ◽  
Mingwei Yuan ◽  
Jinjun Li ◽  
Zhixiong You
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Ammonia Synthesis ◽  
Ru Catalysts ◽  
Synthesis Activity

Ce doping could increase the specific surface area and reducibility of the barium tantalate carrier, which is beneficial to Ru based ammonia synthesis.

Microwave-assisted synthesis of MgO–CNTs supported ruthenium catalysts for ammonia synthesis

2007 ◽  
Vol 8 (12) ◽  
pp. 1881-1885 ◽  
Author(s):  
Qing-Chi Xu ◽  
Jing-Dong Lin ◽  
Jun Li ◽  
Xian-Zhu Fu ◽  
Ying Liang ◽  
...  
Keyword(s):  
Ammonia Synthesis ◽  
Ruthenium Catalysts ◽  
Microwave Assisted Synthesis ◽  
Microwave Assisted

scholarly journals The influence of pre-treatment gas mixture upon the ammonia synthesis activity of Co–Re catalysts

2015 ◽  
Vol 68 ◽  
pp. 53-57 ◽  
Author(s):  
K. McAulay ◽  
J.S.J. Hargreaves ◽  
A.R. McFarlane ◽  
D.J. Price ◽  
N.A. Spencer ◽  
...  
Keyword(s):  
Ammonia Synthesis ◽  
Gas Mixture ◽  
Synthesis Activity ◽  
Pre Treatment
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