AVS 54th International Symposium
    Surface Science Tuesday Sessions
       Session SS-TuP

Paper SS-TuP38
Design and Construction of a Batch Microreactor for Investigations of Heterogeneous Catalysts Deposited on Flat Supports

Tuesday, October 16, 2007, 6:00 pm, Room 4C

Session: Surface Science Poster Session
Presenter: M. Sushchikh, University of California, Santa Barbara
Authors: M. Sushchikh, University of California, Santa Barbara
J. Colby, University of California, Santa Barbara
L. Cameron, University of California, Santa Barbara
W. Tang, University of California, Santa Barbara
A. Kleiman-Shwarsctein, University of California, Santa Barbara
J.N. Park, University of California, Santa Barbara
H. Metiu, University of California, Santa Barbara
E. McFarland, University of California, Santa Barbara
Correspondent: Click to Email

A five microliter volume batch microreactor system has been developed for the investigations of the reaction kinetics over low surface area catalysts deposited on flat supports including submonolayers of metals on single crystals. The main features of the reactor are: micro-probing capability using principle of variable leak valves (minimal altering of the amount of gases in the reactor volume); direct probing of the gases into ultra-high vacuum (UHV) mass-spectrometer volume (high sensitivity); enclosure of the reactor volume in larger tank (leak-proof by design). The reactor is made of UHV compatible components and is ready to be attached to an UHV chamber equipped with linear stage sample transfer. The reactor has been tested at initial total pressure 500 Torr, but both, lower and higher pressures are possible. The temperature is controlled over the range of 20°C to 250°C. The reactor allows monitoring of the reactions over time from tens of minutes to hours. The performance of the reactor has been demonstrated for CO oxidation reaction over Pd foil.