title: Nickel metal with various morphologies: synthesis and performances for catalytic carbon dioxide reforming with methane.
abstract: In this research, nickel metal of three different morphologies including nanostar, icosahedra, and microsphere structures were synthesized. It was found nanostar nickel revealed the Ni(111) crystallographic plane with particle size in the range of 150-200 nm and BET surface area of 13 m2/g. The icosahedra nickel also showed the Ni(111) crystallographic plane with larger particle size (300-400 nm) and BET surface area of 20 m2/g, whereas microsphere nickel exhibited the relatively large cluster size (approximately 3 microm) and BET surface area (114 m2/g) as a result of an aggregation of Ni(101) nanoplates. The obtained nickel catalysts were tested for the activity in carbon dioxide reforming with methane. Based on the similar specific surface area of catalysts, nanostar nickel showed the highest carbon dioxide and methane conversions due to its crystallographic structure. At 700 degrees C, nanostar nickel catalyst exhibited the highest carbon dioxide and methane conversions of 17.6 and 10.5 times higher than those of microsphere nickel catalyst, respectively.
authors: Faculty of Engineering, Department of Chemical Engineering, Center for Petroleum, Petrochemical, and Advanced Materials, Kasetsart University, Bangkok 10900, Thailand.
authors: Nopporn
authors: N
authors: Teabpinyok
authors: Sutheerawat
authors: S
authors: Samingprai
authors: Metta
authors: M
authors: Chareonpanich