caa a22 4500 463252152 CHVBK 20180405153343.0 cr unu---uuuuu 170326e20071101xx s 000 0 eng 10.1007/s10562-007-9184-8 doi (NATIONALLICENCE)springer-10.1007/s10562-007-9184-8 Fabrication of an Effusive Molecular Beam Instrument for Surface Reaction Kinetics—CO Oxidation and NO Reduction on Pd(111) Surfaces [Elektronische Daten] [Kandasamy Thirunavukkarasu, Chinnakonda Gopinath] A simple molecular beam instrument (MBI) was fabricated for measuring the fundamental parameters in catalysis such as, sticking coefficient, transient and steady state kinetics and reaction mechanism of gas/vapor phase reactions on metal surfaces. Important aspects of MBI fabrication are given in detail. Nitric oxide (NO) decomposition and NO reduction with carbon monoxide (CO) on Pd(111) surfaces were studied. Interesting results were observed for the above reactions and they support the efficiency of the MBI to derive the fundamental parameters of adsorption and catalysis. Sustenance of CO oxidation at 400K is dependent mostly on the absence of CO-poisoning; apparently, CO+O recombination is the rate determining step ≤400K. NO adsorption measurements on Pd(111) surface clearly indicating a typical precursor kinetics. Displacement of the chemisorbed CO by NO on Pd(111) surfaces was observed directly with NO+CO beams in the transient kinetics. It is also relatively easy to identify the rate-determining step directly from the MBI data and the same was demonstrated for the above reactions. Springer Science+Business Media, LLC, 2007 Molecular beam nationallicence Kinetics nationallicence Catalysis nationallicence Nitric oxide nationallicence Carbon monoxide nationallicence Pd(111) nationallicence Thirunavukkarasu Kandasamy Catalysis Division, National Chemical Laboratory, Dr. Homi Bhabha Road, 411 008, Pune, India aut Gopinath Chinnakonda Catalysis Division, National Chemical Laboratory, Dr. Homi Bhabha Road, 411 008, Pune, India aut Catalysis Letters Springer US; http://www.springer-ny.com 119/1-2(2007-11-01), 50-58 1011-372X 119:1-2<50 2007 119 10562 https://doi.org/10.1007/s10562-007-9184-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10562-007-9184-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Thirunavukkarasu Kandasamy Catalysis Division, National Chemical Laboratory, Dr. Homi Bhabha Road, 411 008, Pune, India aut NATIONALLICENCE 700 1- Gopinath Chinnakonda Catalysis Division, National Chemical Laboratory, Dr. Homi Bhabha Road, 411 008, Pune, India aut NATIONALLICENCE 773 0- Catalysis Letters Springer US; http://www.springer-ny.com 119/1-2(2007-11-01), 50-58 1011-372X 119:1-2<50 2007 119 10562 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer