Investigation of steam reforming of acetic acid to hydrogen over Ni–Co metal catalyst

Catalytic generation of hydrogen by steam reforming of acetic acid over a series of Ni–Co catalysts have been studied. The catalyst with the molar ratio of 0.25:1 between Ni and Co was superior to other catalysts. The effects of reaction temperature, liquid hourly space velocity (LHSV) and molar ratios of steam-to-carbon (S/C) were studied in detail over this catalyst. At T = 673 K, LHSV = 5.1 h−1, S/C = 7.5:1, the catalyst exhibited the best performances. Acetic acid was converted completely to hydrogen, while H2 selectivity reached up to 96.3% and CO2 selectivity up to 98.1% was obtained, respectively. Ni–Co catalyst showed rather stable performances for the 70 h time-on-stream without any deactivation.

At 673 K, acetic acid was converted to hydrogen completely over Ni–Co catalyst via steam reforming. The selectivities to H2 and CO2 reached maximum values 96.3% and 98.1%, respectively, while the selectivity to CH4 maintained about 0.7%. Figure optionsDownload as PowerPoint slide