Nanofibers Functionalized with Palladium Catalysts

Nanofibers functionalized with palladium catalysts

Palladium Applications

Palladium is a platinum group metal (PGM) and a versatile material that can coordinate with various organic chelating agents to produce a wide variety of palladium based catalysts. It is a good oxidative catalyst, hence it is widely used in CO and hydrocarbon oxidation, and it exhibits good electrical properties for use in many electronic devices. The primary use of palladium catalysts is in three-way catalytic convertors for motor vehicle exhaust treatment with both palladium and palladium oxide providing excellent oxidative catalyst performance. Palladium oxide is a preferred catalyst for catalytic hydrogenation in organic synthesis reactions.

Properties

MemPro’s palladium functionalized nanofibers consist of a base aluminum oxide (Al2O3) nanofibers incorporated with nanoparticles of palladium(II) oxide or as palladium metal.  Our unique manufacturing process produces nanofibers with uniform dispersion of palladium or palladium(II) oxide nanoparticles on the interior and exterior surfaces of Al2O3 fibers. Analysis of palladium nanoparticles reveals very consistent diameters (geometric size) within a range of 2 to 6 nm.

MemPro’s nanofibers are also available with platinum, rhodium, and palladium noble metals incorporated within a single nanofiber support material, manufactured to meet customer specifications.

Palladium functionalized nanofiber materials are made to our customers’ specifications, according to their catalyst loading and base material requirements. Please contact us to order this product.

Characteristic Value
Appearance fibrous, non-woven,whitish-grey flake-like material
Structure Al2O3 crystalline nanofiber material (gamma- or alpha- phase) with supported Pd/PdO nanoparticulates
Density Al2O3 nanofibers:4 gcm-3, palladium nanoparticles: 8.3-12 gcm-3, bulk: 0.1 gcm-3
Surface area Al2O3 nanofibers: 150 – 200 m2g-1, palladium nanoparticles: m2g-1
Melting Point Al2O3 nanofibers: 2072°C, palladium nanoparticles: 750°C PdO and 1,555°C Pd
Thermal Conductivity Al2O3 nanofibers: 30 Wm-1K-1
Electrical Conductivity Al2O3 nanofibers: < 10-14 Sm-1
Dielectric Strength Al2O3 nanofibers: 13.4 MVm-1
Hardness Al2O3 nanofibers: 9 (Mohs)
Fiber diameter 90 – 120 nm (ave.)
Fiber length >5 µm
Refractive Index Al2O3 nanofibers: 1.74926 (λ=1.36 µm)
Other high chemical resistance, catalytically active, insoluble in water

Nanoparticles of palladium supported in inorganic matrices provide a versatile catalyst that is exceptionally well suited for hydrogenation and dehydrogenation reactions. Palladium is commonly used in the Suzuki process to produce polyolifins and styrene from boronic acids. Palladium is a very good heterogeneous catalyst for a a variety of applications with the most common usage (over 50% annually) in catalytic converters. It is also used in multilayer ceramic capacitors. As a material, oxide supported transition-metal catalysts, such as palladium functionalized Al2O3 nanofibers, is of extreme importance in many technological applications including:

  • catalytic converters
  • oxidation of methane
  • oxidation of organic pollutants
  • C-C coupling reactions
  • glass and optical components
  • petroleum cracking (fluid catalytic cracking)

For more information on palladium-based catalyst products, please view the material data safety sheets and specification sheets in PDF format.

Spec sheet: ceramic nanofibers functionalized with palladium
MSDS: Al2O3/PdO material data safety sheet


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