Catalysts - Using Select Nanomaterials From Nanophase Technologies Corporation For Use In Catalysts and Catalytic Applications

Topics Covered

Background
Applications and Markets
Catalysts
NanoTek® Industrial Iron Oxide
NanoTek® Zinc Oxide
NanoTek® Tin Oxide

Background

Nanophase Technologies is an industry-leading nanocrystalline materials innovator and manufacturer with an integrated family of nanomaterial technologies. The entire focus of Nanophase is nanotechnology, with two distinct and patented processes for the preparation and commercial manufacturing of nanopowder metal oxides i.e. Aluminum Oxide, Zinc Oxide, Cerium Oxide, Titanium Dioxide, and several others. Nanophase Technologies Corporation has developed a process, Discrete Particle Encapsulation, to coat the surface of its nanoparticles with a thin polymeric shell that enables compatibility of the particles with a wide variety of fluids, resins and polymers.

Also, Nanophase has developed technology to permit the dispersion of its nanoparticles in water and a variety of polar and non-polar organic fluids. This allows Nanophase to supply concentrated, ready-to-use nanoparticle dispersions, eliminating the need for customers to disperse the nanoparticles themselves. Nanophase’s family of integrated technologies economically produces nanocrystalline materials, and then nanoengineers those materials to fit a customer need.

Applications and Markets

Nanophase produces engineered nanomaterial products for a variety of diverse markets: personal care, sunscreens, abrasion-resistant applications, environmental catalysts, antimicrobial products, and a variety of ultra-fine polishing applications, including semiconductor wafers, hard disk drives, and optics. Various applications include wood preservation, anti-fouling and anti-microbial coatings, fuel cells, catalytic converters, UV-attenuation coatings, scratch resistant coatings, charge dissipating coatings, deodorant/antiperspirants, depilatory/shaving products, and others. In parallel, new markets and applications are constantly being developed.

Catalysts

Catalysts can perform reactions that, although thermodynamically feasible, would not run without the presence of a catalyst, or perform them much faster, more specific, or at lower temperatures. The extremely small size of nanoparticles maximizes the surface area exposed to the reactant, allowing more reactions to take place simultaneously, thus accelerating the process.

The use of nanomaterials based on rare earth metal oxides allows for the preparation of thinner active layers, which can mean less precious metal usage. These nanomaterials also allow for the preparation of higher solids dispersions that are very stable, minimizing the number of coating steps and losses due to flocculated dispersions. Automotive catalytic converters are a key focus area for catalyst performance. While government regulations continue to drive lower acceptable emissions levels of carbon monoxide, hydrocarbons and nitrogen oxides, automotive companies are attempting to lower the use of precious metals, such as platinum, palladium and rhodium, in the catalytic converter to lower cost while meeting the more stringent performance standards. Diesel engines are beginning to be subject to similar regulations as gasoline engines.

NanoTek® Industrial Iron Oxide

NanoArc® Industrial Iron Oxide EXP 0815 is a general purpose gamma phase material suitable for use in catalytic applications such as ammonia synthesis and dehydrogenation reactions.  Manufactured by growing nanocrystals rapidly in a high temperature gas phase condensation, these 30nm particles are fully crystalline and have high surface purity.

NanoTek® Zinc Oxide

NanoShield® ZN-5060 is especially well-suited to meet the criteria necessary for excellent catalytic performance when properly incorporated into a catalyst system, and because the nanoparticles are dense, single phase individual crystals, there is nothing to collapse during thermal cycling. The same materials can be used in other types of environmental catalysts, such as exhaust converters for stationary and large internal combustion engines, chemical scrubbers and for other gaseous products and waste streams.

NanoTek® Tin Oxide

NanoTek® Tin Oxide 1400 is also well-suited to meet the criteria necessary for excellent catalytic performance.  Tin oxide is a wide-energy-gap semiconductor and has been widely used as a catalyst for oxidation of organic compounds, optical electronic devices, rechargeable Li-batteries, and for applications such as solid-state gas sensors.

Successes in many of these applications rely significantly on the preparation of Tin Oxide nanoparticles with a uniform crystalline nanostructure.

Source: Nanophase

For more information on this source please visit Nanophase

Date Added: Sep 14, 2006 | Updated: Jun 11, 2013
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