The Investigation of Active Sites on Nickel Oxide Based Catalysts towards the In-situ Reactions of Methanation and Desulfurization | Zendy

Wan Azelee Wan Abu Bakar | Zendy; Mohd. Yusuf Othman | Zendy; Rusmidah Ali | Zendy; Ching Kuan Yong | Zendy; Susilawati Toemen | Zendy

Open Access

The Investigation of Active Sites on Nickel Oxide Based Catalysts towards the In-situ Reactions of Methanation and Desulfurization

Author(s) -

Wan Azelee Wan Abu Bakar,

Mohd. Yusuf Othman,

Rusmidah Ali,

Ching Kuan Yong,

Susilawati Toemen

Publication year - 2009

Publication title -

modern applied science

Language(s) - English

Resource type - Journals

eISSN - 1913-1852

pISSN - 1913-1844

DOI - 10.5539/mas.v3n2p35

Subject(s) - catalysis , methanation , nickel , flue gas desulfurization , x ray photoelectron spectroscopy , incipient wetness impregnation , oxide , materials science , adsorption , inorganic chemistry , desorption , sulfur , nuclear chemistry , chemistry , chemical engineering , metallurgy , organic chemistry , engineering , selectivity

Supported nickel oxide based catalysts of Fe/ Co/ Ni (10: 30: 60)-Al₂O₃ and Pr/ Co/ Ni (5: 35: 60)-Al₂O₃that were prepared by wetness impregnation method showed potential catalysts for the in-situ reactions of H₂S desulfurization and CO₂ methanation from ambient temperature up to 300 ^oC. X-ray Photoelectron Spectroscopy revealed Ni₂O₃ and Fe₃O₄ as the surface active components on the Fe/ Co/ Ni (10: 30: 60)-Al₂O₃ catalyst, while Ni₂O₃ and Co₃O₄ on the Pr/ Co/ Ni (5: 35: 60)-Al₂O₃ catalyst. Energy Dispersive X-ray analysis indicated the presence of 2.7 % and 0.9 % of sulfur on the spent Fe/ Co/ Ni (10: 30: 60)-Al₂O₃ and Pr/ Co/ Ni (5: 35: 60)-Al₂O₃ catalysts, respectively. N₂ adsorption-desorption analysis showed reduction of 5.5 % on the surface area of the spent Fe/ Co/ Ni (10: 30: 60)-Al₂O₃ catalyst. However, the surface area of the spent Pr/ Co/ Ni (5: 35: 60)-Al₂O₃catalyst increased by 8.6 %.