Adsorption and Activation of Carbon Monoxide at Palladium Surfaces

Taylor, Hugh S.; McKinney, Paul V.

doi:10.1021/ja01361a005

Cited by 11 publications

(3 citation statements)

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“…Relatively few data were obtained at temperature regions including an adsorption maximum or minimum. Systems which show reversal of temperature coefficients at such isobar regions include hydrogen-zinc oxide (187), carbon monoxide-palladium (302), oxygen-glass (264,282), hydrogen-ZnO • Cr203 (291, 305), and hydrogen-ZnO Mo2Oe (291, 305), probably hydrogen-nickel-kieselguhr (269), and oxygen-silver (284,324). The data for the last two systems are fragmentary.…”

Section: The Effects Of Temperaturementioning

confidence: 99%

Kinetics of Chemisorption of Gases on Solids.

Low¹

1960

Chem. Rev.

797

309

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Section: The Effects Of Temperaturementioning

confidence: 99%

Kinetics of Chemisorption of Gases on Solids.

Low¹

1960

Chem. Rev.

797

309

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“…Studies on carbon monoxide separation from gases began as early as World War I. ,, Most of the processes involve numerous kinds of catalysts that can directly oxide carbon monoxide to carbon dioxide or chemically adsorb carbon monoxide on the catalyst surface. The metals that can chemically adsorb carbon monoxide include copper, palladium, cobalt, or even gold . The catalysts that were evaluated for their catalytic activity for converting carbon monoxide to carbon dioxide include lithium doped nickel oxide-silica, metallophthalocyanine monolayers supported on graphite, potassium carbonate promoted iron, magnesium oxide, or zinc oxide …”

Section: Introductionmentioning

confidence: 99%

Adsorption Equilibria and Kinetics of Carbon Monoxide on Zeolite 5A, 13X, MOF-5, and MOF-177

2009

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Carbon monoxide adsorption equilibria and kinetics on zeolite 5A, 13X, MOF-5, and MOF-177 were measured volumetrically at (298, 237, and 194.5) K and carbon monoxide pressures up to 108 kPa. It was found that zeolite 5A had the highest adsorption capacity at ambient temperature (298 K) and ambient pressure (108 kPa), whereas MOF-177 was a better adsorbent at (194.5 and 237) K. Both the Langmuir and Freundlich isotherm models were used to correlate the adsorption isotherms. Diffusivities of carbon monoxide in these adsorbents were estimated from the adsorption uptake curves by a micropore diffusion model. The average carbon monoxide diffusivities at 298 K and carbon monoxide pressures below 108 kPa are 3.42·10−11 m2·s−1, 1.40·10−11 m2·s−1, 1.72·10−8 m2·s−1, and 5.01·10−9 m2·s−1 for zeolite 5A, 13X, MOF-5, and MOF-177, respectively. The heat of adsorption of carbon monoxide at low coverage on zeolite 5A and 13X is below 70 kJ·mol−1 and drops rapidly as the coverage increases, while the heat of adsorption of carbon monoxide in MOF-5 and MOF-177 is in the range of (16 to 22) kJ·mol−1.

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“…The complete cleansing may of course result not in a surface of maximum activity but merely in one of constant activity. 5) in the study of palladium to check the completeness of the degassing process. In the present study the amount of hydrogen adsorbed was less in the first two trials, table 2, than in the subsequent experiments.…”

Section: Stability Of the Adsorbent Surfacementioning

confidence: 99%