New Precious Metal Compounds and Catalysts Catalog


March 11, 2008 Ward Hill, MA A new Precious Metal Compounds and Catalysts
catalog is now available from Alfa Aesar. This new 80-page publication lists a full range
of precious metal (platinum, palladium, rhodium, iridium, ruthenium, gold, silver and
osmium) chemicals and catalysts.

Included in the new catalog is a 14-page Introduction to Catalysis and Catalysts written
by Martyn Twigg, Chief Scientist, Johnson Matthey. This introduction provides in-depth
background on historical aspects, general catalyst requirements, advantages,
disadvantages and reaction types associated with supported, unsupported and
homogeneous catalysts and catalysis.

The catalog lists a comprehensive range of high purity Johnson Matthey heterogeneous
and homogeneous catalysts. Three new catalyst kits; Asymmetric Hydrogenation
Ligand/Catalyst Kit, Advanced Coupling Kit and Mini Advanced Coupling Kit, are also
listed.

The catalog also offers proprietary Johnson Matthey product lines, such as the HiSPEC
line of precious metal catalysts for fuel cell research. HiSPEC catalysts provide
superior performance in proton exchange membrane (PEM) and direct methanol fuel
cells. The product line consists of single and bimetallic supported and unsupported
catalysts, which have been used with success in both anodes and cathodes. HiFUEL
base metal catalysts and a range of fuel cell components are also included.

Other proprietary Johnson Matthey product lines listed include FibreCat Anchored
Homogeneous Catalysts and Smopex Scavenger Systems. These newly designed
polymer-anchored materials for homogeneous catalysis help maintain the accessibility of
the catalytic sites for diffusion of the starting materials and products. The Smopex
Precious Metal Scavenger System is one of the most efficient methods for removing
metallic impurities in process catalysis. Smopex products are available individually or
in kits. FibreCat catalysts are anchored to a series of functional fibers, enabling them to
be optimized for a wide range of reaction types.

Alfa Aesar carries a full range of Johnson Matthey precious metal catalysts and
chemicals in-stock for immediate shipment. Plants in the USA and England have the
stock and manufacturing capability to scale up to meet customers needs on short notice.
All catalysts are lot-traceable and certificates of analysis are available. To request a copy
of the Precious Metal Compounds and Catalysts Catalog visit our website at
www.alfa.com, call 1-800-343-0660 or email your request to info@alfa.com.

About Alfa Aesar
Alfa Aesar, a Johnson Matthey Company, is a leading international manufacturer and
supplier of research chemicals, metals and materials. With over 30,000 products listed in
its catalog, Alfa Aesar is the single source for customers needs for chemicals and
materials in sizes for research and scale up. The Alfa Aesar Catalog carries organic
compounds, high purity inorganics, pure elements, alloys, precious metal catalysts,
AA/ICP standards and more. Alfa Aesar has sales offices and distribution facilities
throughout North America, Europe and Asia and a distributor network covering the
globe.

Please visit our website at http://www.alfa.com/