Haslinda Mohd Sidek, and Irmawati Ramli, and Norhazlin Zainuddin, and Ahangar, Hossein Abbastabar and Taufiq-Yap Yun Hin, (2021) Physicochemical properties of MoVTeNb mixed oxide catalysts synthesized using different vanadium sources. Sains Malaysiana, 50 (8). pp. 2395-2405. ISSN 0126-6039
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Official URL: https://www.ukm.my/jsm/malay_journals/jilid50bil8_...
Abstract
The use of different vanadium sources in the synthesis of multi-metal MoVTeNb oxide catalysts has been investigated for their effect on the physicochemical properties of catalysts. Metal oxides were synthesized by slurry method assisted with a microwave irradiation. Vanadium pentoxide (V2O5), vanadyl sulphate (VOSO4) and ammonium metavanadate (NH4VO3) were used as the vanadium sources, respectively. X-ray diffraction (XRD) pattern showed the existence of orthorhombic (M1) phases in all catalysts. The catalyst prepared using V2O5 produced the highest formation of the phase. This was further supported by Inductive Couple Plasma-Atomic Emission Spectroscopy (ICP-AES), which showed that the V2O5 catalyst has the highest V: Mo ratio, mainly responsible for the high catalytic activity. Temperature Programmed Reduction in Hydrogen (H2-TPR) showed better reducibility for the catalyst when compared to the others. Temperature Programmed Reaction (TPRn) confirmed that the oxidants active for propane conversion into acrylic acid were originated from the lattice of the catalyst.
Item Type: | Article |
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Keywords: | Acrylic acid; Anaerobic reaction; MoVTeNb mixed metal oxide; Propane oxidation; Vanadium source |
Journal: | Sains Malaysiana |
ID Code: | 17594 |
Deposited By: | ms aida - |
Deposited On: | 15 Nov 2021 02:51 |
Last Modified: | 19 Nov 2021 02:10 |
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