Carbon monoxide oxidation, on platinum

Carbon Monoxide Oxidation on Platinum Coverage Dependence of the Product Internal Energy... 

CARBON MONOXIDE OXIDATION 6.2.1 Carbon Monoxide Oxidation on Platinum... 

Watanabe M, Shibata M, Motoo S. 1985. Electrocatalysis hy ad-atoms. PartXn. Enhancement of carbon monoxide oxidation on platinum electrodes by oxygen adsorbing ad-atoms (Ge, Sn, Pb, As, Sb and Bi). J Electroanal Chem 187 161-174. 

Potentiometric techniques have been used to study autonomous reaction rate oscillations over catalysts and carbon monoxide oxidation on platinum has received a considerable amount of attention43,48,58 Possible explanations for reaction rate oscillations over platinum for carbon monoxide oxidation include, (i) strong dependence of activation energy or heat of adsorption on coverage, (ii) surface temperature oscillations, (iii) shift between multiple steady states due to adsorption or desorption of inert species, (iv) periodic oxidation or reduction of the surface. The work of Sales, Turner and Maple has indicated that the most... 

H.H. Rotermund, W. Engel, M. Kordesh, G. Ertl, Imaging of Spatio Temporal Pattern Evolutionduring Carbon Monoxide Oxidation on Platinum, Nature 343 (6256) (1990) 355. 

Gorodetskii, V., Block, J.H., Drachsel, W., and Ehsasi, M., Oscillations in the carbon monoxide oxidation on platinum surfaces observed by field electron microscopy, Appl. Sutf. Sci, 61,198-205,1993. 

Garcia G, Koper MTM. 2008. Stripping voltammetry of carbon monoxide oxidation on stepped platinum single-crystal electrodes in alkaline solution. Phys Chem Chem Phys 10 3802-3811. 

IX yer, S. M. Transient infrared studies of carbon monoxide oxidation on a supported platinum catalyst. M. S. Thesis, University of Connecticut, 1980. 

K. Grass and H. G. Lintz, The kinetics of carbon monoxide oxidation on tin(TV) oxide supported platinum catalysts, J. Catal. 172, 446-452 (1997). 

The electrochemical performance of carbon monoxide adsorbed on platinum basal planes has been extensively studied with the help of various physical techniques such as LEED, AES, and in situ infrared spectroscopy of the surface species [68,69]. The common feature of these studies is the use of a non-adsorbing anion electrolyte such as perchloric acid. The problem arises from the coincident potential region for adsorbed carbon monoxide oxidation and desorption that only on carbon monoxide surface saturation, we can neglect the influence of the hydrogen-adsorbed states. 

Matsushima, T., Ohno, Y., and Rar, A., Reaction sites for carbon monoxide oxidation on a stepped platinum (1 1 2) surface a spatial distribution study a product desorption. Surf. Sci., 293, 145-151, 1993. 

Akubuiro, E. C., Verykios, X. E. Lesnick, L. Dispersion and snpport effects in carbon monoxide oxidation over platinum. App/ied Catalysis 14, 215-227 (1985). Stara, L, Nehasil, V. MatoUn, V. The influence of particle size on CO oxidation on Pd/alumina model catalyst. Surface Science 331—333, 173—177 (1995). 

Berlowitz PJ, Peden CHF, Goodman DW (1988) Kinetics of carbon monoxide oxidation on single-crystal palladium, platinum, and iridium. J Phys Chem 92 5213-5221... 

Jambunathan, K., Shah, B.C., Hillier, A.C. Scanning electrochemical microscopy of hydrogen electro-oxidation. Rate constant measurements and carbon monoxide poisoning on platinum. J. Electroanal. Chem. 2001, 500, 279-289. 

Oxidation. Carbon monoxide can be oxidized without a catalyst or at a controlled rate with a catalyst (eq. 4) (26). Carbon monoxide oxidation proceeds explosively if the gases are mixed stoichiometticaHy and then ignited. Surface burning will continue at temperatures above 1173 K, but the reaction is slow below 923 K without a catalyst. HopcaUte, a mixture of manganese and copper oxides, catalyzes carbon monoxide oxidation at room temperature it was used in gas masks during World War I to destroy low levels of carbon monoxide. Catalysts prepared from platinum and palladium are particularly effective for carbon monoxide oxidation at 323 K and at space velocities of 50 to 10, 000 h . Such catalysts are used in catalytic converters on automobiles (27) (see Exhaust CONTHOL, automotive). 

Igarashi H, Fujino T, Watanabe M. 1993. Hydrogen electro-oxidation on platinum catalysts in the presence of trace carbon monoxide. J Electroanal Chem 391 119-123. 

Kunimatsu K, Golden WG, Seki H, Philpott MR. 1985a. Carbon monoxide adsorption on a platinum electrode studied by polarization modulated FT-IRRAS. 1. Co Adsorbed in the double-layer potential region and its oxidation in acids. Langmuir 1 245 -250. 

Weaver, M.J., Zou, S., and Tang, C. (1999) A concerted assessment of potential-dependent vibrational frequencies for nitric oxide and carbon monoxide adlayers on low-index platinum-group surfaces in electrochemical compared with ultrahigh vacuum environments structural and electrostatic implications. Journal of Chemical Physics, 111, 368-381. 

HIE) Liao, P. C., Wolf, E. E. Self-Sustained Oscillations During Carbon Monoxide Oxidation 1982 on a Platinum/y-Aluminum Oxide Catalyst. Chem. Eng. Commun. 13(4-6), 315-326... 

S.E. Voltz, C.R. Morgan, D. Liederman and S.M. Jacob Kinetic Study of Carbon Monoxide and Propylene Oxidation on Platinum Catalysts. Ind. Eng. Chem. Prod. Res. Develop., 12(4) 294 301,1973. 

There is a strong difference between the voltammetric profiles of the carbon monoxide oxidative desorption on a pure platinum single crystal in the presence of an ad-metal species and the same in the absence of an ad-metal species. The carbon monoxide adsorption and oxidation are also different depending on the type of the deposited metal as shown in Figure 11.4. 

---