scholarly journals Highly effective and selective molecular nanowire catalysts for hydrogen and ammonia synthesis

2020 ◽  
Vol 8 (48) ◽  
pp. 26075-26084
Author(s):  
Qian Wu ◽  
Rui Peng ◽  
Baibiao Huang ◽  
Liangzhi Kou ◽  
Ying Dai ◽  
...  
Keyword(s):  
High Activity ◽  
Ammonia Synthesis ◽  
Highly Effective

New types of electrocatalysts with high activity and selectivity are essential for advancing sustainable hydrogen and ammonia productions.

Two-Dimensional Transition Metal Borides as High Activity and Selectivity Catalysts for Ammonia Synthesis

Nanoscale ◽  
2021 ◽  
Author(s):  
Haona Zhang ◽  
Shuhua Wang ◽  
Hao Wang ◽  
Baibiao Huang ◽  
Shuping Dong ◽  
...  
Keyword(s):  
Transition Metal ◽  
Specific Surface ◽  
High Activity ◽  
Surface Area ◽  
Active Site ◽  
Ammonia Synthesis ◽  
Two Dimensional ◽  
Large Specific Surface Area ◽  
Site Density ◽  
Metal Borides

In comparison to defect/doping induced activity in materials, transition metal borides with exposed metal atom, large specific surface area and high active site density show advantages as durable and efficient...

Novel preparation of nanocrystalline magnesia-supported caesium-promoted ruthenium catalyst with high activity for ammonia synthesis

2003 ◽  
pp. 2488-2489 ◽  
Author(s):  
Shan Wu ◽  
Jixin Chen ◽  
Xingfang Zheng ◽  
Haisheng Zeng ◽  
Chunming Zheng ◽  
...  
Keyword(s):  
High Activity ◽  
Ammonia Synthesis ◽  
Ruthenium Catalyst

On the origin of high activity of hcp metals for ammonia synthesis

2016 ◽  
Vol 18 (7) ◽  
pp. 5291-5298 ◽  
Author(s):  
Shideh Ahmadi ◽  
Payam Kaghazchi
Keyword(s):  
High Activity ◽  
Ammonia Synthesis

We find that the high activity of nanoparticles of hcp metals (Ru, Os, and Re) for ammonia synthesis is due to the N-induced formation of atomically-rough {134̄2} facets.

Preparation of High Activity Catalyst for Ammonia Synthesis by Supporting Well-Defined Ru Nanoparticles on γ-Al2O3

2001 ◽  
Vol 30 (12) ◽  
pp. 1332-1333 ◽  
Author(s):  
Akane Miyazaki ◽  
Ioan Balint ◽  
Ken-ichi Aika ◽  
Yoshio Nakano
Keyword(s):  
High Activity ◽  
Ammonia Synthesis ◽  
Ru Nanoparticles ◽  
Activity Catalyst

Highly effective perovskite-type BaZrO3 supported Ru catalyst for ammonia synthesis

2013 ◽  
Vol 458 ◽  
pp. 130-136 ◽  
Author(s):  
Ziqing Wang ◽  
Benyao Liu ◽  
Jianxin Lin
Keyword(s):  
Ammonia Synthesis ◽  
Ru Catalyst ◽  
Highly Effective ◽  
Perovskite Type

High Activity Dual Colloid Ammonia Synthesis Catalysts

1987 ◽  
Vol 111 ◽  
Author(s):  
Thomas Henry Vanderspurt ◽  
Michael A. Richard
Keyword(s):  
High Activity ◽  
Ammonia Synthesis ◽  
Iron Alloy ◽  
Synthesis Technique ◽  
New Synthesis ◽  
Synthesis Catalysts ◽  
Iron Alloy Catalysts ◽  
Micro Morphology ◽  
Alloy Catalysts

AbstractA new synthesis technique produces a family of iron and iron alloy catalysts with a micro-morphology uniquely suited for ammonia synthesis catalysts.

scholarly journals Low Apparent Activation Energy of Ammonia Synthesis over Ru Catalyst Supported by Hydrogen Storage Material

2021 ◽  
Author(s):  
kazuma torii ◽  
Takaya Ogawa ◽  
Ryusei Morimoto ◽  
Tetsu Seno ◽  
Hideyuki Okumura ◽  
...  
Keyword(s):  
Activation Energy ◽  
Hydrogen Storage ◽  
Apparent Activation Energy ◽  
High Activity ◽  
Ammonia Synthesis ◽  
Catalytic Performance ◽  
Ruthenium Catalysts ◽  
High Electron ◽  
Hydrogen Storage Material ◽  
Storage Material

<p>Ruthenium is an excellent catalyst for ammonia synthesis and recently shows quite high activity when supported on materials with high electron-donating and hydrogen-absorbing properties. The high activity is generally considered to originate from the two effects: the electron-donating property of the support, which reduces its apparent activation energy (<sup>app</sup>E<sub>a</sub>) to half of pure Ru’s <sup>app</sup>E<sub>a</sub>, and the hydrogen-absorbing property, which increases the active site by suppressing hydrogen poisoning, a drawback of ruthenium catalysts. Here, we investigated the catalytic performance of ruthenium loaded on TiMn<sub>2</sub>, a hydrogen storage material without electron-donating property to ruthenium. Ruthenium on TiMn<sub>2</sub> showed the <sup>app</sup>E<sub>a</sub> reduced by half despite the lack of electron-donating property. It is plausible that the decreased <sup>app</sup>E<sub>a</sub> is due to the elimination of hydrogen over Ru by TiMn<sub>2</sub>. The hydrogen storage capacity is also an essential factor in discussing the <sup>app</sup>E<sub>a</sub>.</p>

Ruthenium Ammonium Chloride as a Precursor for the Preparation of High Activity Catalysts for Ammonia Synthesis

2009 ◽  
Vol 30 (3) ◽  
pp. 185-190 ◽  
Author(s):  
Jun NI ◽  
Rong WANG ◽  
Jianxin LIN ◽  
Kemei WEI
Keyword(s):  
High Activity ◽  
Ammonium Chloride ◽  
Ammonia Synthesis

scholarly journals Rational construction of free-standing P-doped Fe2O3 nanowire arrays as highly effective electrocatalyst for overall water splitting

RSC Advances ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 1233-1240
Author(s):  
Yong Li Tong ◽  
Bao Qian Chi ◽  
Dong Li Qi ◽  
Weiqiang Zhang
Keyword(s):  
Energy Conversion ◽  
High Activity ◽  
Water Splitting ◽  
Nanowire Arrays ◽  
Free Standing ◽  
Overall Water Splitting ◽  
Highly Effective ◽  
Energy Conversion Systems ◽  
Rational Construction

Designing electrode structures with high activity is very significant for energy conversion systems.

scholarly journals Low Apparent Activation Energy of Ammonia Synthesis over Ru Catalyst Supported by Hydrogen Storage Material

2021 ◽  
Author(s):  
kazuma torii ◽  
Takaya Ogawa ◽  
Ryusei Morimoto ◽  
Tetsu Seno ◽  
Hideyuki Okumura ◽  
...  
Keyword(s):  
Activation Energy ◽  
Hydrogen Storage ◽  
Apparent Activation Energy ◽  
High Activity ◽  
Ammonia Synthesis ◽  
Catalytic Performance ◽  
Ruthenium Catalysts ◽  
High Electron ◽  
Hydrogen Storage Material ◽  
Storage Material

<p>Ruthenium is an excellent catalyst for ammonia synthesis and recently shows quite high activity when supported on materials with high electron-donating and hydrogen-absorbing properties. The high activity is generally considered to originate from the two effects: the electron-donating property of the support, which reduces its apparent activation energy (<sup>app</sup>E<sub>a</sub>) to half of pure Ru’s <sup>app</sup>E<sub>a</sub>, and the hydrogen-absorbing property, which increases the active site by suppressing hydrogen poisoning, a drawback of ruthenium catalysts. Here, we investigated the catalytic performance of ruthenium loaded on TiMn<sub>2</sub>, a hydrogen storage material without electron-donating property to ruthenium. Ruthenium on TiMn<sub>2</sub> showed the <sup>app</sup>E<sub>a</sub> reduced by half despite the lack of electron-donating property. It is plausible that the decreased <sup>app</sup>E<sub>a</sub> is due to the elimination of hydrogen over Ru by TiMn<sub>2</sub>. The hydrogen storage capacity is also an essential factor in discussing the <sup>app</sup>E<sub>a</sub>.</p>

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