The Interaction of Carbon Monoxide With Nitric Oxide and Hydrogen on Platinum

Reaction of NO, CO, and H(,2), and interaction between NO and CO and between CO and H(,2) on Pt(410) have been investigated using Temperature Programmed Desorption. Pt(410) is found to be unusually reactive in decomposition of NO even at 120 K, as evidenced by desorption of N(,2)O below 150 K. At low exposures of NO, only the formation of N(,2) is observed. The formation of N(,2)O if found to take place via a precursor mechanism, i.e. reaction between adsorbed nitrogen atoms and weakly bound NO molecules. Annealing experiment indicates that a surface reconstruction takes place during heating cycle of an NO adlayer at 120 K. Pt(410) is also found to be unusually reactive in decomposition of CO. This decomposition process complicates the desorption spectra of CO in room temperature study. Adsorption of CO at 120 K is almost identical to the room temperature study, except the appearance of the (alpha)(,0) and (alpha)(,1) peaks.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Chemical Engineering

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2014

Author dc:creator

• Park, Young Oun

• Engineering, Chemical

Identifier

(UMI)AAI8511658

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/69751