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Cited by 61 publications
(4 citation statements)
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“…In order to calculate the dispersion D (that is, the atomic ratio between the number of surface Pd atoms (Pd s ) and the number of total Pd atoms) from CO chemisorption measurements, the stoichiometric ratio CO/Pd s has to be known. It has been shown that CO chemisorption on Pd can occur in two ways (17,18): a carbon monoxide molecule can be bonded through the carbon to one Pd atom (linear CO) or to two Pd atoms (bridged CO). The ratio of linearly held CO to bridged-bonded CO decreases as the dispersion decreases (19,20) and the result of this is an increase in the global ratio CO/Pd s with dispersion.…”
Section: Synthesismentioning
confidence: 99%
“…In order to calculate the dispersion D (that is, the atomic ratio between the number of surface Pd atoms (Pd s ) and the number of total Pd atoms) from CO chemisorption measurements, the stoichiometric ratio CO/Pd s has to be known. It has been shown that CO chemisorption on Pd can occur in two ways (17,18): a carbon monoxide molecule can be bonded through the carbon to one Pd atom (linear CO) or to two Pd atoms (bridged CO). The ratio of linearly held CO to bridged-bonded CO decreases as the dispersion decreases (19,20) and the result of this is an increase in the global ratio CO/Pd s with dispersion.…”
Section: Synthesismentioning
confidence: 99%
“…A review on surface area measurements by Farrauto (1974) gives details on the chemisorption method, and the article by Pulvermacher and Ruckenstein (1974) provides details on the other methods including magnetic measurements. Of these methods, gas chemisorption is perhaps the most accurate and certainly the easiest to implement, e.g., Hz on Pt (Spenadel and Boudart, 1960;Adler and Kearney, 1960) and on Ni (Taylor, Yates and Sinfelt, 1964), CO on Pd (Scholten and Montfoort, 1962), and NO on oxides of Cu, N, and Fe (Gandhi and Shelef, 1973). While the chemisorption method is a powerful tool for catalytic research, it has its limitations for the determination of active surface area.…”
Section: Introductionmentioning
confidence: 99%
“…In this manuscript, the host will be referred to as Pt(1.12)­Si (IE) . The hydrogen adsorption isotherm was measured by a static volumetric apparatus at 25 °C. , By assuming a stoichiometry of 2 H/surface Pt, the number of Pt surface atoms (Pt s ) was 48.32 μmol. The resulting metal dispersion was ca.…”
Section: Experimental Sectionmentioning
confidence: 99%