Catalytic Effect of Nb2O5 in MgH2-Nb2O5 Ball-Milled Composites

Catalysts

Tao Ma¹  Shigehito Isobe¹  Yongming Wang¹  Naoyuki Hashimoto¹ 

[1] Graduate School of Engineering, Hokkaido University, N-13, W-8, Sapporo 060-8628, Japan;

关键词: MgH₂;    Nb₂O₅;    catalytic effect;    ball-milling;   

DOI  :  10.3390/catal2030344

来源: mdpi

【 摘 要 】

We report a study on the desorption properties, crystallography and chemical state of MgH₂ and 1 mol% Nb₂O₅ ball-milled composites. Desorption temperatures of the composites decreased with increase of ball-milling time. Size of MgH₂ crystallites decreased during ball-milling. Reduction of Nb₂O₅ after ball-milling was confirmed by tracing the chemical state of Nb and was further supported by TEM observation. The reduced phases may act as more effective catalysts improving the desorption properties.

【 授权许可】

CC BY   
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