A stable and efficient 3D cobalt-graphene composite catalyst for the hydrolysis of ammonia borane

2016 ◽  
Vol 6 (19) ◽  
pp. 7186-7192 ◽  
Author(s):  
Mengxiong Li ◽  
Jiantong Hu ◽  
Hongbin Lu
Keyword(s):  
Catalytic Activity ◽  
Cobalt Catalyst ◽  
Ammonia Borane ◽  
Composite Catalyst ◽  
High Catalytic Activity ◽  
Graphene Composite ◽  
3D Composite ◽  
Hydrolysis Of

We synthesized a PEI decorated GO 3D composite supported cobalt catalyst that showed high catalytic activity and stability for the hydrolysis of AB.

From Ru nanoparticle-encapsulated metal–organic frameworks to highly catalytically active Cu/Ru nanoparticle-embedded porous carbon

2017 ◽  
Vol 5 (10) ◽  
pp. 4835-4841 ◽  
Author(s):  
Pradip Pachfule ◽  
Xinchun Yang ◽  
Qi-Long Zhu ◽  
Nobuko Tsumori ◽  
Takeyuki Uchida ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
High Temperature ◽  
Porous Carbon ◽  
Metal Organic Frameworks ◽  
Ammonia Borane ◽  
Carbon Composites ◽  
High Catalytic Activity ◽  
Catalytically Active ◽  
Metal Organic

High-temperature pyrolysis of Ru nanoparticle-encapsulated MOF (Ru@HKUST-1) afforded ultrafine Cu/Ru nanoparticle-embedded porous carbon composites (Cu/Ru@C), which show high catalytic activity for ammonia borane hydrolysis.

Non-noble bimetallic CuCo nanoparticles encapsulated in the pores of metal–organic frameworks: synergetic catalysis in the hydrolysis of ammonia borane for hydrogen generation

2015 ◽  
Vol 5 (1) ◽  
pp. 525-530 ◽  
Author(s):  
Jun Li ◽  
Qi-Long Zhu ◽  
Qiang Xu
Keyword(s):  
Catalytic Activity ◽  
Hydrogen Generation ◽  
Metal Organic Frameworks ◽  
Ammonia Borane ◽  
Alloy Nanoparticles ◽  
Metal Organic ◽  
Hydrolysis Of

Non-noble bimetallic CuCo alloy nanoparticles were successfully encapsulated in the pores of MIL-101 without aggregation on the external surfaces of the host framework, which exhibit excellent catalytic activity for hydrolytic dehydrogenation of ammonia borane.

Surfactant PVA-Stabilized Co–Mo Nanocatalyst Supported by Graphene Oxide Sheets Toward the Hydrolytic Dehydrogenation of Ammonia Borane

NANO ◽  
2019 ◽  
Vol 14 (11) ◽  
pp. 1950137 ◽  
Author(s):  
Xin Zhao ◽  
Dandan Ke ◽  
Shumin Han ◽  
Yuan Li ◽  
Hongming Zhang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Catalytic Activity ◽  
Amorphous State ◽  
Ammonia Borane ◽  
Molar Ratio ◽  
Composite Catalyst ◽  
Catalyst Carrier ◽  
Bimetallic Composite ◽  
Good Catalytic Activity ◽  
Graphene Oxide Sheets

By adding surfactant polyvinyl alcohol (PVA) and controlling the preparation process, we successfully synthesized Co–Mo catalysts. For further improving the dispersion, reduced graphene oxide sheets as catalyst carrier were introduced to synthesize Co–Mo@rGO composite catalyst as highly efficient catalysts for hydrolytic dehydrogenation of ammonia borane. The introduction of Mo for preparing Co–Mo@rGO catalyst helped to form alloy catalyst with better structure, better dispersity and smaller particle size. When the molar ratio of Co and Mo was 0.75:0.25, the bimetallic composite catalyst exhibited superior activity with TOF value of 16.29[Formula: see text]mol[Formula: see text]. The activation energy of the reaction was calculated to be 43.72[Formula: see text]kJ[Formula: see text][Formula: see text]. Furthermore, the reusability tests reveal that waxberry-like Co–Mo still show good catalytic activity with 80.3% of their initial activity in five successive runs. The enhanced catalytic activities were due to the synergistic interaction between graphene sheets and waxberry-like Co–Mo NPs, which was beneficial to improve the dispersion and stability of bimetallic NPs. Also, ligand effects on the formation of waxberry-like structure and amorphous state further promoted the catalytic activity.

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