Gamma Alumina Nanofibers: Gamma Aluminum Oxide (γ-Al2O3) Solutions

Gamma-alumina is a metastable phase of aluminum oxide that irreversibly transforms into the more thermally stable alpha phase at sufficiently high temperatures, typically cited in the literature as somewhere between 1,000 and 1,200°C, though the exact point varies with particle size, heating rate, and impurities. This transition costs gamma-alumina its high surface area and porosity, since alpha-alumina is denser and lower-surface-area. This matters when choosing between the phases: use gamma-alumina below its transition temperature, and alpha-alumina for higher-temperature environments. TruSpin can help evaluate which phase suits your application's operating temperature range.

Yes. TruSpin's AC electrospinning platform provides precise control over porosity, diameter, alignment, and cross-linking, so gamma-alumina porosity can be tailored to your application rather than limited to one standard configuration. Porosity is especially important here since it directly affects surface area, flow-through, and adsorption or catalytic performance — higher porosity generally increases surface area but may trade off mechanical strength depending on the use. TruSpin's technical team works directly with research and industrial partners to define target porosity based on intended use, whether catalysis, adsorption filtration, or another application. Submit your requirements through the services page to start.

Orders are typically processed within 1–2 business days. Delivery times vary by location, but most orders arrive within 3–7 business days. You’ll receive tracking details once your order ships.Gamma-alumina (γ-Al2O3) is widely used as a catalyst support because of its high surface area, porous structure, and good thermal/chemical stability at moderate temperatures, allowing catalytic materials to disperse across a large, accessible surface for improved reaction efficiency. Its porous structure also supports good flow-through in reactor systems, reducing pressure drop versus denser supports. In nanofiber form, gamma-alumina's surface area advantage is amplified, since electrospun fibers offer a continuous, high-surface-area network that can improve reactant accessibility over particulate or pelletized supports. TruSpin's AC electrospinning platform can tailor porosity and fiber diameter to a specific catalytic application.

Surface area in gamma-alumina nanofibers is mainly determined by fiber diameter, porosity, and processing conditions during and after electrospinning, so it's tunable rather than fixed. Because gamma-alumina is already recognized as high-surface-area in bulk or particulate form, forming it into a nanofiber via TruSpin's AC electrospinning platform can further increase accessible surface area versus pellet or powder formats — part of why it's popular for catalysis and adsorption. Ideal surface area depends on your target catalytic loading, reaction kinetics, or adsorption capacity. TruSpin's technical team can define a target spec with you and discuss validating testing as needed.

Yes, gamma-alumina's high surface area and porous structure suit adsorption-based filtration, where contaminants are captured on the material's surface rather than filtered by size exclusion alone — the same property behind its common use in water treatment and industrial adsorption. In nanofiber format, adsorption capacity can be further enhanced by the fiber network's high accessible surface area versus bulk particulate media, potentially improving contaminant capture per unit volume. TruSpin's AC electrospinning platform allows porosity and diameter to be tailored to your adsorption or filtration application; the team can discuss your target contaminants and operating conditions to help determine fit.