Thermal behavior study of the MoVTeNb oxide catalyst for selective oxidation process

Rubia Idris and S. B. Abd Hamid (2009) Thermal behavior study of the MoVTeNb oxide catalyst for selective oxidation process. In: International Conference on Nanoscience and Nanotechnology (NANO-SciTech 2008), 18-21 November 2008, Selangor, Malaysia.

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Several parameters involved in preparing the multi metal oxide (MMO) catalysts (Mo(1)V(0.3)Te(0.23)Nb(0.12)O(x)) for selective oxidation of propane to acrylic acid (AA) were investigated. These included the proper pre-calcined and calcinations atmosphere effect on the performance of the catalysts. It was found that each metal element plays a critical role to the performance of an effective catalyst and also the calcinations under a non-flow inert atmosphere. The characterization results from XRD, SEM, TG and DSC show the important differences depending on the activation procedures of the MoVTeNb oxide catalyst. The XRD analysis is used to identify the phase inventory of the MoVTeNb oxide catalysts. The structure of orthorhombic M1, M2, TeMo(5)O(16), V(0.95)Mo(0.97)O(5) and Mo(5)O(14) phase was investigated. The orthorhombic M1 phase is the most active and selective phase and is responsible for the major of the efficiently of the best catalyst for selective oxidation process. TGA and DTG allow the identification of the number and types, of reactions involving evaporation of small molecules from removal of ligands and water to condensation or drying processes. From all these analyses it was proven that the activation procedures would affect the performance of the MoVTeNb oxide catalyst.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Uncontrolled Keywords: Selective oxidation process, Propane, Acrylic acid, MoVTeNb oxide catalyst
Subjects: Q Science > QC Physics > QC1-999 Physics > QC170-197 Atomic physics. Constitution and properties of matter
Divisions: SCHOOL > School of Science and Technology
Depositing User: ADMIN ADMIN
Date Deposited: 07 Feb 2012 12:21
Last Modified: 30 Dec 2014 14:39

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