@article { ISI:000250234900007,
	title = {Fabrication of an effusive molecular beam instrument for surface reaction kinetics - CO oxidation and NO reduction on Pd(111) surfaces},
	journal = {Catalysis Letters},
	volume = {119},
	number = {1-2},
	year = {2007},
	month = {NOV},
	pages = {50-58},
	publisher = {SPRINGER},
	type = {Article},
	address = {233 SPRING STREET, NEW YORK, NY 10013 USA},
	abstract = {<p>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 400 K is dependent mostly on the absence of CO-poisoning; apparently, CO + O recombination is the rate determining step \&lt;= 400 K. 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.</p>},
	keywords = {carbon monoxide, catalysis, kinetics, molecular beam, nitric oxide, Pd(111)},
	issn = {1011-372X},
	doi = {10.1007/s10562-007-9184-8},
	author = {Thirunavukkarasu, Kandasamy and Gopinath, Chinnakonda S.}
}
@article { ISI:000262582400008,
	title = {Kinetic evidence for the influence of subsurface oxygen on palladium surfaces towards CO oxidation at high temperatures},
	journal = {Chemistry-an Asian Journal},
	volume = {4},
	number = {1},
	year = {2009},
	month = {OCT},
	pages = {74-80},
	publisher = {WILEY-V C H VERLAG GMBH},
	address = {PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY},
	abstract = {<p>Transient state kinetics of the catalytic oxidation of CO with 0, on Pd-surfaces has been measured under isothermal conditions by using a molecular beam approach. Systematic studies were carried out as a function of reaction temperature and CO+O(2) composition. With sufficient kinetic evidence, we have demonstrated the positive influence of subsurface oxygen towards CO-adsorption and oxidation to CO, at high temperatures (600-900 K) on Pd-surfaces, and the likely electronic nature of the surface changes with oxygen in the subsurface. These studies also provide a direct proof for CO-adsorption with a significantly reactive sticking coefficient at high temperatures on Pd-surfaces exhibiting a significant subsurface O-coverage.</p>},
	keywords = {Adsorption, kinetics, Oxidation, Palladium, surface analysis},
	issn = {1861-4728},
	doi = {10.1002/asia.200800278},
	author = {Gopinath, Chinnakonda S. and Thirunavukkarasu, Kandasamy and Nagarajan, Sankaranarayanan}
}
