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First row transition metal oxide based catalysts for the in-situ reactions of methanation and desulfurization in the removal of sour gases from simulated natural gas

Wan Abu Bakar, Wan Azelee and Othman, Mohd. Yusuf and Ching, Kuan Yong and Mohd. Nasir, Junaidi (2008) First row transition metal oxide based catalysts for the in-situ reactions of methanation and desulfurization in the removal of sour gases from simulated natural gas. Modern applied science, 2 (3).

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Abstract

The objective of this novel catalyst development is to achieve both low temperature and high conversion of sour gases of H2S and CO2 present in the natural gas. The results showed that the conversion of H2S to elemental sulfur on all of the potential catalysts was achieved 100 %. However, methanation of CO2 in the presence of H2S yielded 0.7 % CH4 over Fe/ Zn/ Cu/ Ti-Al2O3 catalyst, 1.1 % CH4 over Fe/ Zn/ Cu-Al2O3 catalyst and the highest is 6.1 % CH4 over Pr/ Co/ Ni-Al2O3 catalyst at maximum studied temperature of 300 oC. The catalysts were further characterized by X-rays Photoelectron Spectroscopy and Nitrogen Adsorption analysis. XPS results revealed Ni2+ ion in the NiO and Ni3+ in Ni2O3 species, spinel compound of Co3O4 on the Pr/ Co/ Ni-Al2O3 catalyst. N2 adsorption-desorption analysis illustrated 7.9 % increment of surface area over the spent Pr/ Co/ Ni-Al2O3 catalyst, which assumed to be responsible for the dramatical increased of the methanation activity of this catalyst at the reaction temperature of 300 oC.

Item Type:Article
Additional Information:The research is financed by Universiti Teknologi Malaysia and Ministry of Science, Technology and Innovation, Malaysia through IRPA Vot 74248
Uncontrolled Keywords:titanium, copper, nickel, methanation, desulfurization, natural gas
Subjects:Q Science > QD Chemistry
Divisions:Science
ID Code:6745
Deposited By: Ms Zalinda Shuratman
Deposited On:03 Nov 2008 04:13
Last Modified:01 Jun 2010 15:46

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