Steam reforming of glycerin on Ni-loaded catalyst was performed using a ZrO 2 -based support material. The addition of CaO to ZrO 2 improved the catalyst performance, and NiO/CaO-ZrO 2 afforded glycerin conversion of 88.9% with an H 2 yield of 75.3% at 600°C. Carbon formation decreased from 4.2 to 2.0% with CaOadded catalyst. Solid solution was formed with the addition of CaO to ZrO 2 , and it exhibited basic characteristics. Further reduction of carbon formation during the reforming reaction was achieved by using a quaternary complex oxide catalyst NiO-CeO 2 /CaO-ZrO 2 , where glycerin conversion of 96.1% and a H 2 yield of 83.7% were achieved with carbon formation of 0.7% at 600°C.
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