The study of the performance of PtNi/CeO2–nanocube catalysts for low temperature steam reforming of ethanol

Improved stability of Ni/Al2O3 catalysts by effect of promoters (La2O3, CeO2) for ethanol steam-reforming reaction

“…[5] and undesired reactions which contribute to catalyst deactivation by coke formation (Eqs. (4) and (5)): nC 2 H 4 → oligomers + coke (4) CH 4 → 2H 2 + C, H • 298 = +74.9 kJ mol −1 (5) Development of suitable catalysts which are able to produce a H 2 -rich stream with very low CO concentration at medium or low temperature and stable over time is still a challenge [6]. Different catalysts, including supported metals (Ni [7][8][9][10][11][12] and Co [13,14]), supported noble metals [2] and bimetallic catalysts [15][16][17] have been studied for the ESR.…”

セリア担持ニッケル–銅触媒の還元挙動とエタノール水蒸気改質における触媒性能に及ぼす触媒組成の効果

“…Ni10 underwent the stepwise reduction of NiO to the metal at 510 K and 572 K, which were approximately 100 K lower than the reduction temperatures for unsupported NiO 29) , indicating a promoting effect of the CeO2 on Ni reduction. The broad peak with a maximum at approximately 1040 K is attributed to the reduction of bulk CeO2 28) . The TPR profile of Cu10 was characterized by two partially overlapping peaks with small widths and high intensities at approximately 455 K and 475 K. The reduction temperatures for Ni10 and Cu10 were consistent with the XRD results.…”

“…Ni and Co are non-noble metal catalysts that are under extensive investigation because of their high activities and low costs 9) 16) . Bimetallic effects have also been investigated to improve the catalytic performance of monometallic catalysts 17) 28) . The combination of Ni and Cu into a bimetallic catalyst for SRE has been extensively studied 17) 21) .…”

Rh/Al 2 O 3 –La 2 O 3 catalysts promoted with CeO 2 for ethanol steam reforming reaction

“…Development of suitable catalysts which are able to produce a H 2 rich stream with very low CO concentration at medium or low temperature,and stable over time is still a challenge [3].Different metals, Ni, Co, Pt, Rh, Ni/Cu, Pt/Ni deposited on different oxide supports (e.g., Al 2 O 3 , La 2 O 3 , ZnO, CeO 2 , MgO, etc.) have been studied for the ESR [4][5][6][7][8][9].…”