Pure molybdenum trioxide (MoO₃) is a high-purity inorganic compound widely valued for its versatile chemical, electrical, and catalytic properties. It typically appears as a pale yellow or white crystalline powder and is one of the most important oxides of molybdenum. With a molecular weight of 143.94 g/mol, MoO₃ is produced primarily by roasting molybdenite (MoS₂), which oxidizes sulfur and molybdenum to form this stable oxide.
MoO₃ has a layered orthorhombic crystal structure and a relatively wide bandgap (~3 eV), making it a useful material in various electronic and optical applications. Its layered nature allows for ion intercalation, an essential feature in advanced energy storage devices. MoO₃ is thermally stable and exhibits good volatility at high temperatures, which enables its use in vapor-phase deposition processes and thin-film technologies.
One of the most notable applications of pure molybdenum trioxide is in catalysis, especially in the petroleum refining industry, where it acts as a catalyst or a catalyst support for hydrodesulfurization (HDS) and hydrodenitrogenation (HDN). These processes help remove sulfur and nitrogen compounds from fuels, improving fuel quality and reducing harmful emissions. MoO₃ is often used in combination with cobalt or nickel on alumina supports to enhance its catalytic activity.
MoO₃ also plays a critical role in energy storage systems such as lithium-ion and sodium-ion batteries. Its ability to reversibly insert and extract metal ions makes it an excellent candidate for battery cathodes and pseudocapacitors.
In glass and ceramics, molybdenum trioxide is added to improve resistance to thermal shock and chemical corrosion. It enhances the mechanical strength and optical properties of speciality glass.
In summary, pure molybdenum trioxide is a multifunctional material with significant industrial value. Its roles in catalysis, energy storage, electronics, and materials science make it a cornerstone compound in both traditional and emerging technologies.
Pure molybdenum trioxide (MoO₃) is widely used in catalysis, especially in petroleum refining for hydrodesulfurization. It’s also applied in gas sensors, electrochromic devices, lithium-ion batteries, and as a precursor for molybdenum metal production. Its semiconducting properties make it valuable in optoelectronics and energy-efficient solar and bright windows coatings.
| Mo | Ca | Cu | K | Fe | Na | Pb | Cr | Mn | P | Sn | V | Zn | W |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 66.6% | <5ppm | <20ppm | |||||||||||
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