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The characterization of Ni-based catalysts for autothermal reforming process

Latiff, M. H. A. and Songip, Ahmad Rahman and Nasri, N. S. and Tutuk, D. K. (2004) The characterization of Ni-based catalysts for autothermal reforming process. Proceedings of 18th Symposium of Malaysian Chemical Engineers SOMChE 2004, 1 . pp. 1-79.

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A simple technique approach was used to characterize the structural and chemical properties of CoO-NiO catalysts supported on delta-Al2O3, HZSM-5 and MgO-Al2O3.The morphology of the catalysts was studied by X-Ray diffraction to determine the phase composition and the particle size of the catalysts. Temperature-programmed reduction (TPR) reveals the formation of NiO and Co3O4 in dependence on temperature in case of catalysts supported on delta-Al2O3 and MgO-Al2O3 at higher metal loading. The catalysts supported on HZSM-5 also show appearance of NiO, CoO and Co3O4, which could lead to deactivation of the catalysts via formation of coke on the catalyst surface. The formation of NiO-CoO-MgO solid solution supported on MgO-Al2O3 exhibited stronger interaction between metal and support thus can make the catalysts more resistant to sintering and enhance the structure durability of catalyst in high temperature methane reforming process.

Item Type:Article
Uncontrolled Keywords:Alumina, characterizations, CoO-NiO, HZSM-5, MgO-Al2O3, solid solution, temperature-programmed reduction, X-ray diffraction
Subjects:T Technology > T Technology (General)
Divisions:Chemical and Natural Resources Engineering
ID Code:5138
Deposited By: Norhani Jusoh
Deposited On:14 Feb 2008 08:04
Last Modified:01 Jun 2010 03:23

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