COx-free hydrogen production from ammonia at low temperature using Co/SiC catalyst: Effect of promoter

Self-combustion Ni and Co-based perovskites as catalyst precursors for ammonia decomposition. Effect of Ce and Mg doping

“…Additionally, the catalytic activity is given by turnover frequency (TOF) [14,67] and it was estimated according to the next equation:…”

“…Despite of the highest catalytic activity of Ru catalysts [7][8][9], more economical and available metals have been explored to produce hydrogen from ammonia. In this context Ni and Co have attracted huge attention thanks to their high activity on ammonia decomposition reaction [10][11][12][13][14]. Moreover, bimetallic non-noble metal catalysts based on Ni and Co have shown higher catalytic activities than the monometallic ones due to the enhancement of the reaction rate-limiting step [15,16].…”

Recent progress for hydrogen production from ammonia and hydrous hydrazine decomposition: A review on heterogeneous catalysts

“…Even though Ru is a precious and expensive metal, many studies have focused on Ru catalysts due to their excellent catalytic properties [58], [60], [63], [65], [68] . However, other novel catalysts are investigated with promising results for future experiments [56], [59], [61], [64], [71].…”

“…Generally, the most common ones are alumina and silica [63], [69], but other materials are used as well [57]- [60], [67], [71].…”

“…[71] developed Co catalysts supported on β-SiC for the H2 production by ammonia decomposition at reaction temperatures below 500 o C. The catalysts were modified with different metals (K, Cs, Ca, Mg, La and Ce) to study the effect of promoters. The catalysts with the addition of 1 % of Cs, Mg, Ca or Ce showed poorer performance while the catalysts loaded with K or La enhanced the catalytic activity due their electron-donor properties that modified the electronic structure of cobalt active sites.…”