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High-area Carbons

Gojkovic SL, Vidakovic TR. 2001. Methanol oxidation on an ink type electrode using Pt supported on high area carbons. Electrochim Acta 47 633-642. [Pg.557]

It may thus be concluded that the specific methodology involved in the dispersion of FePc on high area carbon leads to the thermal decomposition of the macrocycle at temperatures much below those expected for the bulk material, generating small particles of hydrated FeOOH upon exposure to an alkaline solution. [Pg.263]

E. Ayranci, B.E. Conway, Adsorption and electrosorption of ethyl xanthate and thiocyanate anions at high-area carbon-cloth electrodes studied by in situ UV spectroscopy development of procednres for wastewater pnrification. Anal. Chem., 73, 1181-1189 (2001). [Pg.105]

Gojkovic, S.L., Gupta, S., and Savinell, R.F., Heat-treated iron(lll) tetramethoxyphe-nyl porphyrin chloride supported on high-area carbon as an electrocatalyst for oxygen reduction, Electrochim. Acta, 45, 889, 1999. [Pg.299]

Donors and Donees in Permanent Contact.—A spillover mechanism has been put forward to account for the catalysis of the hydrogenation of high area carbon to methane by impregnated metals.The activity series found (Rh >... [Pg.163]

Figure 3.30 Normalized Fe K-edge fluorescence XANES of (a) microcrystalline (FeTMPPbO, (b) and (c) 40% w/w (FeTMPPbO on Black Pearls (BP) high-area carbon in 0.1 M NaOH in the original oxidized state, 0.43V and in the reduced state, —0.90V versus SCE, respectively, recorded in situ (d) microcrystalline FePc. Insert cyclic voltammetry (5 mVs n) of 40% (FeTMPP)20 BP in the same solution. Figure 3.30 Normalized Fe K-edge fluorescence XANES of (a) microcrystalline (FeTMPPbO, (b) and (c) 40% w/w (FeTMPPbO on Black Pearls (BP) high-area carbon in 0.1 M NaOH in the original oxidized state, 0.43V and in the reduced state, —0.90V versus SCE, respectively, recorded in situ (d) microcrystalline FePc. Insert cyclic voltammetry (5 mVs n) of 40% (FeTMPP)20 BP in the same solution.
Figure 3.31 In situ reduced Fe K-edge EXAFS functions (A) and their corresponding Fourier transforms (B) for (FeTMPP)20 adsorbed on Black Pearls high-area carbon recorded in aqueous solutions, pH = 13 polarized at a potential at which the adsorbate is present in its oxidized (dimer) (a) and reduced (b) (monomer) forms. Figure 3.31 In situ reduced Fe K-edge EXAFS functions (A) and their corresponding Fourier transforms (B) for (FeTMPP)20 adsorbed on Black Pearls high-area carbon recorded in aqueous solutions, pH = 13 polarized at a potential at which the adsorbate is present in its oxidized (dimer) (a) and reduced (b) (monomer) forms.
More recently, Faubert et al. [129] studied in a more systematic fashion the effect of Tp on both the activity and the stability of FeTPP (presumably in its (t-oxo form) and CoTPP dispersed on XC-72 carbon incorporated into a gas diffusion electrode in actual fuel cells. Shown in Figure 3.72A and 3.72B are polarization curves recorded at 50 °C for FeTPP XC-72 and CoTPP XC-72, respectively, pyrolyzed at the specified temperatures, in a Nafion -based fuel cell configuration for which the performance of specimen in the range 700 < Tp < 900 °C was fairly comparable to that of 2% w/w Pt supported on high-area carbon. These same materials also displayed good stability up to about 10 h compared to samples treated at higher and lower Tp under the same conditions (see Figure 3.73A and 3.73B). Also shown for comparison are the results obtained for 2% w/w Pt dispersed in the same carbon. [Pg.273]

Figure 3.72 Polarization curves recorded at 50°C for FeTPP XC-72 (A) and CoTPP XC-72 (B) pyrolyzed at the specified temperatures in a fuel cell configuration. Also shown in dotted lines for comparison are data collected under the same conditions for 2% w/w Pt, supported on high-area carbon (see original reference for details). Figure 3.72 Polarization curves recorded at 50°C for FeTPP XC-72 (A) and CoTPP XC-72 (B) pyrolyzed at the specified temperatures in a fuel cell configuration. Also shown in dotted lines for comparison are data collected under the same conditions for 2% w/w Pt, supported on high-area carbon (see original reference for details).
Scherson, D. A.A. Tanaka, S.L. Gupta, D. Tryk, C. Fierro, R. Holze, and E.B. Yeager (1986). Transition metal macrocycles supported on high area carbon Pyrolysis-mass spectrometry studies. Electrochim. Acta 31, 1247-1258. [Pg.141]

Choi, H.J., G. Kwag, and S. Kim (2001). Electrochemical and XAFS investigation of nitrite reduction by heat-treated fi-oxo derivative if iron phthalocyanin supported on high area carbon. J. Electtoanal. Chem. 508, 105-114. [Pg.186]

Stefan IC, Mo Y, Ha SY, Scherson D (2003) In situ Fe K-edge X-ray absorption fine structure of a nitrosyl adduct of iron phthalocyanine irreversibly adsorbed on a high area carbon electrode in an acidic electrolyte, Inorg Chem 42(14) 4316-4321... [Pg.208]

Scherson DA, Tanaka A, Gupta SL, Tryk D, Fierro C, Holze R, Yeager EB (1986) Transition metal macrocycles supported on high area carbon pyrolysis-mass spectrometry studies. Electrochim Acta 31 1247-1258... [Pg.331]

Bael T, Scherson DA (1998) In situ real-time Pt L-III-edge x-ray absorption spectra of carbon monoxide adsorbed on platinum particles dispersed in high-area carbon in aqueous electrolytes. J Electrochem Soc 145 80-83... [Pg.408]

Gojkovic SL, Gupta S, Savinell RE (1998) Heat-treated iron(III) tetramethoxyphenyl porphyrin supported on high-area carbon as an electrocatalyst for oxygen reduction—I. Characterization of the electrocatalysL J Electrochem Soc 145 3493-3499... [Pg.35]


See other pages where High-area Carbons is mentioned: [Pg.328]    [Pg.580]    [Pg.495]    [Pg.258]    [Pg.263]    [Pg.265]    [Pg.294]    [Pg.288]    [Pg.254]    [Pg.2135]    [Pg.421]    [Pg.29]    [Pg.191]    [Pg.227]    [Pg.230]    [Pg.237]    [Pg.269]    [Pg.271]    [Pg.277]    [Pg.254]    [Pg.2134]    [Pg.29]    [Pg.285]    [Pg.74]    [Pg.143]    [Pg.362]    [Pg.328]   
See also in sourсe #XX -- [ Pg.29 ]




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