Name : [in Japanese]
Location : [in Japanese]
Date : October 20, 2022 - October 21, 2022
Pages 78-79
Ethanol is one of renewable biomass and its dry-reforming using CO2 to produce CO and H2 is an attractive process for recycling society pointing to zero-emission. In the present study, composite catalysts composed of major active metal Cu, CeO2 with high ability to transfer oxygen, ZrO2 with structural stability were prepared by the sol-gel method to investigate the dry reforming of ethanol. 10Cu45Ce45Zr, 10Cu67.5Ce22.5Zr and 10Cu22.5Ce67.5Zr include 10 wt% of Cu and the weight ratio of CeO2 and ZrO2 was changed in the range from 22.5 to 67.5 wt%. Three catalysts exhibited the conversion of ethanol and CO2 and dry-reforming proceeded at 675°C and 700°C. 10Cu45Ce45Zr exhibited the higher yields of CO and H2. It was shown that in TG-DTA measurement of used catalysts, the carbon content in 10Cu45Ce45Zr was lower than those of other two catalysts, indicating that coke formation was inhibited by the catalyst. TEM image shows the formation of carbon nanotube which would bring about the higher temperature to burn coke.
