Wolfgang/Hanau, Germany (3 November 2005). – Degussa AG has
launched its Deloxan® metal scavengers as producs: Deloxan® THP II
and Deloxan® MP. As macroporous organofunctional polysiloxanes, both
products have excellent properties for removing Pd, Pt, Rh, Ag, Au, Zn,
Cu and other transition metals from APIs and chemical processes.
Deloxan® THP II carries thiourea as functional group while Deloxan® MP
carries a thiol functionality.
Deloxan® products offer several advantages over organic polymers. The
surface density of the Deloxan® metal scavengers is significantly higher
than that of surface-modified or post-reacted polymers so more metals
can be captured. By virtue of their inert backbone Deloxan® products are
compatible with all solvents. They also exhibit high structural and thermal
stability. In addition, they are easy to filter due to their bead shape and
are stable in a wide pH range.
As a leading manufacturer of heterogeneous and homogeneous
catalysts, Degussa offers a broad range of ancillary services to support
our customers, said Dr. Jürgen Krauter, head of marketing for the
Deloxan® product lines. This is why we have launched these product
lines. Our Deloxan® products make it easy to remove metals from APIs
and nicely complement our heterogeneous and homogeneous catalysts.
Both product lines can be used in batch mode or tubular plug-flow mode.
In a batch reactor, the Deloxan® metal scavenger is added to the reaction
mixture, stirred and filtered off.
An attractive alternative to the batch mode is Degussa’s proprietary
tubular plug-flow reactor mode of operation where the Deloxan® metal
scavenger is put into a fixed-bed column. Easy to set up, this mode
reduces overall batch time and eliminates the filtration step.
Sample kits are available through Degussa sales representatives or
directly through Deloxan’s website.