Structural characterization and catalytic activity of molybdenum oxide supported zirconia catalysts

“…4 shows two steps weight loss below 300 owing to removal of physisorbed, structural water, ammonia, nitrous oxide and complete decomposition of iron and manganese nitrate salts to their oxides Ferric oxide, Manganese oxide 24,25 as well as formation of MoO 3 oxide. The third weight losses step at about 830 is attributed to the evaporation of MoO 3 at higher temperature 25,26 .…”

Section: Biodiesel Determination Through Gc Analysismentioning

confidence: 98%

Biodiesel Synthesis Catalyzed by Transition Metal Oxides: Ferric-Manganese Doped Tungstated/Molybdena Nanoparticle Catalyst

2015

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“…Mo structures and oxidation states are determined by preparation parameters such as loading, preparation method, calcination temperature, reduction temperature and reaction temperature [17]. One area of interest is in their ability to form carbides through the insertion of carbon into the lattices of Mo.…”

Section: Introductionmentioning

confidence: 99%

n-Heptane hydroconversion over sulfated-zirconia-supported molybdenum carbide catalysts

2016

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Molybdenum carbide on sulfated zirconia was prepared by impregnation of MoO 3 on sulfated zirconia to give a loading of 5 wt% followed by carburisation at 923 K in a mixture of CH 4 /H 2 (4:1). The resulting catalyst was characterised by N 2 adsorption-desorption, CO chemisorption, FTIR of pyridine adsorption, XRD, TPR, TGA, Raman and SEM-EDX. This combination of characterisation studies suggests formation of a well-dispersed Mo 2 C phase over tetragonal zirconia. When employed in the hydroconversion of n-heptane, high temperature and low space velocity lead to substantial cracking. However, under some conditions, an increase in the research octane number (RON) from 0 (n-heptane) to ca. 50 was attained. Between 723 and 873 K, n-heptane is mainly cracked to iso-pentane and ethane. The product distribution as a function of conversion suggests that the reaction did not simply follow a consecutive reaction pathway, but that other parallel routes were involved.

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Structural characterization and catalytic activity of molybdenum oxide supported zirconia catalysts

Cited by 67 publications

References 56 publications

Synthesis of Waste Cooking Oil Based Biodiesel via Ferric-Manganese Promoted Molybdenum Oxide / Zirconia Nanoparticle Solid acid Catalyst: Influence of Ferric and Manganese Dopants

Synthesis of Waste Cooking Oil Based Biodiesel via Ferric-Manganese Promoted Molybdenum Oxide / Zirconia Nanoparticle Solid acid Catalyst: Influence of Ferric and Manganese Dopants

Biodiesel Synthesis Catalyzed by Transition Metal Oxides: Ferric-Manganese Doped Tungstated/Molybdena Nanoparticle Catalyst

n-Heptane hydroconversion over sulfated-zirconia-supported molybdenum carbide catalysts

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