National Technical Reports Library

The National Technical Information Service acquires, indexes, abstracts, and archives the largest collection of U.S. government-sponsored technical reports in existence. The NTRL offers online, free and open access to these authenticated government technical reports. Technical reports and documents in its repository may be available online for free either from the issuing federal agency, the U.S. Government Publishing Office’s Federal Digital System website, or through search engines.

Details

Imaging Catalytic Surfaces by Multiplexed Capillary Electrophoresis with Absorption Detection.

DE2003804534

Publication Date	2002
Personal Author	Christodoulou, M.
Page Count	50
Abstract	A new technique for in situ imaging and screening heterogeneous catalysts by using multiplexed capillary electrophoresis with absorption detection was developed. By bundling the inlets of a large number of capillaries, an imaging probe can be created that can be used to sample products formed directly from a catalytic surface with high spatial resolution. In this work, we used surfaces made of platinum, iron or gold wires as model catalytic surfaces for imaging. Various shapes were recorded including squares and triangles. Model catalytic surfaces consisting of both iron and platinum wires in the shape of a cross were also imaged successfully. Each of the two wires produced a different electrochemical product that was prepared by capillary electrophoresis. Based on the collected data we were able to distinguish the products from each wire in the reconstructed image.
Keywords	Electrophoresis Catalysts Absorption Detection Physical chemistry Analytical chemistry Capillaries Gold Iron Platinum Probes Shape Spatial resolution Theses
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Iowa State Univ., Ames.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200313

Imaging Catalytic Surfaces by Multiplexed Capillary Electrophoresis with Absorption Detection.

Imaging Catalytic Surfaces by Multiplexed Capillary Electrophoresis with Absorption Detection.
DE2003804534

Publication Date	2002
Personal Author	Christodoulou, M.
Page Count	50
Abstract	A new technique for in situ imaging and screening heterogeneous catalysts by using multiplexed capillary electrophoresis with absorption detection was developed. By bundling the inlets of a large number of capillaries, an imaging probe can be created that can be used to sample products formed directly from a catalytic surface with high spatial resolution. In this work, we used surfaces made of platinum, iron or gold wires as model catalytic surfaces for imaging. Various shapes were recorded including squares and triangles. Model catalytic surfaces consisting of both iron and platinum wires in the shape of a cross were also imaged successfully. Each of the two wires produced a different electrochemical product that was prepared by capillary electrophoresis. Based on the collected data we were able to distinguish the products from each wire in the reconstructed image.
Keywords	Electrophoresis Catalysts Absorption Detection Physical chemistry Analytical chemistry Capillaries Gold Iron Platinum Probes Shape Spatial resolution Theses
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Iowa State Univ., Ames.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200313