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

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 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.

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

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
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