Effects of Alkali Metals on Nickel/Alumina Catalyzed Ethanol Dry Reforming

Although ethanol dry reforming is an attractive carbon utilization technology, problems of severe coke formation and low catalytic activity should be solved for realization the technology. We demonstrate effects alkali metal additives (lithium, sodium, potassium) on nickel catalyzed reforming. Potassium doped catalyst (Ni/K2O-Al2O3) showed enhanced durability in Thermogravimetric analysis (TGA) that Ni/K2O-Al2O3 had a high resistance to formation. The amounts formed were 1/3 lower than Ni/Al2O3. total quantities closely correlated number basic sites catalysts. Raman spectroscopy transmission electron microscopy analyses revealed metals control