Graphdiyne Interface Engineering: Highly Active and Selective Ammonia Synthesis

2020 ◽  
Vol 59 (31) ◽  
pp. 13021-13027 ◽  
Author(s):  
Yan Fang ◽  
Yurui Xue ◽  
Yongjun Li ◽  
Huidi Yu ◽  
Lan Hui ◽  
...  
Keyword(s):  
Ammonia Synthesis ◽  
Interface Engineering ◽  
Highly Active

Graphdiyne Interface Engineering: Highly Active and Selective Ammonia Synthesis

2020 ◽  
Vol 132 (31) ◽  
pp. 13121-13127
Author(s):  
Yan Fang ◽  
Yurui Xue ◽  
Yongjun Li ◽  
Huidi Yu ◽  
Lan Hui ◽  
...  
Keyword(s):  
Ammonia Synthesis ◽  
Interface Engineering ◽  
Highly Active

Electron Donation by Low-Crystalline Ba-La-Ce Oxygen-Deficient Composite Oxide Accumulating on Ru Nanoparticles for Ammonia Synthesis under Mild Conditions

2019 ◽  
Author(s):  
Katsutoshi Sato ◽  
Shin-ichiro Miyahara ◽  
Yuta Ogura ◽  
Kotoko Tsujimaru ◽  
Yuichiro Wada ◽  
...  
Keyword(s):  
Ammonia Synthesis ◽  
Bond Cleavage ◽  
Synthesis Process ◽  
Strong Electron ◽  
Mild Conditions ◽  
Ru Nanoparticles ◽  
Rate Determining Step ◽  
Highly Active ◽  
Composite Oxides ◽  
Low Crystalline

<p>To mitigate global problems related to energy and global warming, it is helpful to develop an ammonia synthesis process using catalysts that are highly active under mild conditions. Here we show that the ammonia synthesis activity of Ru/Ba/LaCeO<i><sub>x</sub></i> pre-reduced at 700 °C is the highest reported among oxide-supported Ru catalysts. Our results indicate that low crystalline oxygen-deficient composite oxides, which include Ba<sup>2+</sup>, Ce<sup>3+</sup> and La<sup>3+</sup>, with strong electron-donating ability, accumulate on Ru particles and thus promote N≡N bond cleavage, which is the rate determining step for ammonia synthesis.</p>

Electron Donation by Low-Crystalline Ba-La-Ce Oxygen-Deficient Composite Oxide Accumulating on Ru Nanoparticles for Ammonia Synthesis under Mild Conditions

2019 ◽  
Author(s):  
Katsutoshi Sato ◽  
Shin-ichiro Miyahara ◽  
Yuta Ogura ◽  
Kotoko Tsujimaru ◽  
Yuichiro Wada ◽  
...  
Keyword(s):  
Ammonia Synthesis ◽  
Bond Cleavage ◽  
Synthesis Process ◽  
Strong Electron ◽  
Mild Conditions ◽  
Ru Nanoparticles ◽  
Rate Determining Step ◽  
Highly Active ◽  
Composite Oxides ◽  
Low Crystalline

<p>To mitigate global problems related to energy and global warming, it is helpful to develop an ammonia synthesis process using catalysts that are highly active under mild conditions. Here we show that the ammonia synthesis activity of Ru/Ba/LaCeO<i><sub>x</sub></i> pre-reduced at 700 °C is the highest reported among oxide-supported Ru catalysts. Our results indicate that low crystalline oxygen-deficient composite oxides, which include Ba<sup>2+</sup>, Ce<sup>3+</sup> and La<sup>3+</sup>, with strong electron-donating ability, accumulate on Ru particles and thus promote N≡N bond cleavage, which is the rate determining step for ammonia synthesis.</p>

Effects of solvent stabilizer in the preparation of highly active potassium-promoted Ru/MgO catalysts for ammonia synthesis

2008 ◽  
Vol 9 (6) ◽  
pp. 1214-1218 ◽  
Author(s):  
Qing-Chi Xu ◽  
Jing-Dong Lin ◽  
Xian-Zhu Fu ◽  
Dai-Wei Liao
Keyword(s):  
Ammonia Synthesis ◽  
Highly Active

Surface Dynamics for Creating Highly Active Ru Sites for Ammonia Synthesis: Accumulation of a Low-Crystalline, Oxygen-Deficient Nanofraction

2020 ◽  
Vol 8 (7) ◽  
pp. 2726-2734 ◽  
Author(s):  
Katsutoshi Sato ◽  
Shin-ichiro Miyahara ◽  
Yuta Ogura ◽  
Kotoko Tsujimaru ◽  
Yuichiro Wada ◽  
...  
Keyword(s):  
Ammonia Synthesis ◽  
Surface Dynamics ◽  
Highly Active ◽  
Low Crystalline

scholarly journals Effect of nitrogen co-doping with ruthenium on the catalytic performance of Ba/Ru–N-MC catalysts for ammonia synthesis

RSC Advances ◽  
2019 ◽  
Vol 9 (38) ◽  
pp. 22045-22052 ◽  
Author(s):  
Yongcheng Ma ◽  
Guojun Lan ◽  
Xiaolong Wang ◽  
Geshan Zhang ◽  
Wenfeng Han ◽  
...  
Keyword(s):  
Ammonia Synthesis ◽  
Catalytic Performance ◽  
Co Doping ◽  
Highly Active

A highly active and stable mesoporous Ba/Ru–N-MC catalyst for ammonia synthesis was prepared by an in situ thermal carbonization method with nitrogen co-doping with ruthenium NPs.

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