Effect of W on PtSn/C catalysts for ethanol electrooxidation
Tóm tắt
Binary and ternary Pt-based catalysts were prepared by the Pechini–Adams modified method on carbon Vulcan XC-72, and different nominal compositions were characterized by TEM and XRD. XRD showed that the electrocatalysts consisted of the Pt displaced phase, suggesting the formation of a solid solution between the metals Pt/W and Pt/Sn. Electrochemical investigations on these different electrode materials were carried out as a function of the electrocatalyst composition, in acid medium (0.5 mol dm−3 H2SO4) and in the presence of ethanol. The results obtained at room temperature showed that the PtSnW/C catalyst display better catalytic activity for ethanol oxidation compared to PtW/C catalyst. The reaction products (acetaldehyde, acetic acid and carbon dioxide) were analyzed by HPLC and identified by in situ infrared reflectance spectroscopy. The latter technique also allowed identification of the intermediate and adsorbed species. The presence of linearly adsorbed CO and CO2 indicated that the cleavage of the C–C bond in the ethanol substrate occurred during the oxidation process. At 90 °C, the Pt85Sn8W7/C catalyst gave higher current and power performances as anode material in a direct ethanol fuel cell (DEFC).
Tài liệu tham khảo
Vigier F, Coutanceau C, Hahn F, Belgsir EM, Lamy C (2004) J Electroanal Chem 563:81
Lamy C (2006) In: Lens PNL, Kennes C, Le Cloirec P, Deshusses MA (eds) Waste gas treatment for resource recovery, integrated environmental technology series, Chap. 21. IWA publishing, pp 360–383
Iwasita T, Pastor E (1994) Electrochim Acta 39:531
Xia XH, Liess H-D, Iwasita T (1997) J Electroanal Chem 437:233
Neto AO, Giz MJ, Perez J, Ticianelli EA, Gonzalez ER (2002) J Electrochem Soc 149:A272
Camara GA, de Lima RB, Iwasita T (2004) Electrochem Commun 6:812
Shao MH, Adzic RR (2005) Electrochim Acta 50:2415
Lamy C, Belgsir EM, Léger J-M (2001) J Appl Electrochem 31:799
Camara GA, de Lima RB, Iwasita T (2005) J Electroanal Chem 585:128
Léger J-M, Rousseau S, Coutanceau C, Hahn F, Lamy C (2005) Electrochim Acta 50:5118
Jusys Z, Schmidt TJ, Dubau L, Lasch K, Jörissen L, Garche J, Behm RJ (2002) J Power Sources 105:297
Santos VP, Tremiliosi-Filho G (2003) J Electroanal Chem 554–555:395
Pereira MG, Jiménez MD, Elizalde MP, Manzo-Robledo A, Alonso-Vante N (2004) Electrochim Acta 49:3917
Zhou WJ, Song SQ, Li WZ, Sun GQ, Xin Q, Kontou S, Poulianitis K, Tsiakaras P (2004) Solid State Ionics 175:797
Xu C, Shen PK, Ji X, Zeng R, Liu Y (2005) Electrochem Commun 7:1305
Tarasevich MR, Karichev ZR, Bogdanovskaya VA, Lubnin EN, Kapustin AV (2005) Electrochem Commun 7:141
Jiang L, Sun G, Sun S, Liu J, Tang S, Li H, Zhou B, Xin Q (2005) Electrochim Acta 50:5384
Song SQ, Zhou WJ, Zhou ZH, Jiang LH, Sun GQ, Xin Q, Leontidis V, Kontou S, Tsiakaras P (2005) Int J Hydrogen Energy 30:995
Zhou WJ, Song SQ, Li WZ, Zhou ZH, Sun GQ, Xin Q, Douvartzides S, Tsiakaras P (2005) J Power Sources 140:50
Wang H, Jusys Z, Behm RJ (2006) J Power Sources 154:351
Mann J, Yao N, Bocarsly AB (2006) Langmuir 22:10432
Colmenares L, Wang H, Jusys Z, Jiang L, Yan S, Sun GQ, Behm RJ (2006) Electrochim Acta 52:221
Goetz M, Wendt H (1998) Electrochim Acta 43:3637
Neto AO, Perez J, Napporn WT, Ticianelli EA, Gonzalez ER (2000) J Braz Chem Soc 11:39
Roth C, Goetz M, Fuess H (2001) J Appl Electrochem 31:793
de Oliveira MB, Profeti LPR, Olivi P (2005) Electrochem Commun 7:703
dos Anjos DM, Kokoh KB, Léger J-M, de Andrade AR, Olivi P, Tremiliosi-Filho G (2006) J Appl Electrochem 36:1391
Ribeiro J, dos Anjos DM, Kokoh KB, Coutanceau C, Léger J-M, Olivi P, de Andrade AR, Tremiliosi-Filho G (2007) Electrochim Acta 52:6997
Lamy C, Rousseau S, Belgsir EM, Coutanceau C, Léger J-M (2004) Electrochim Acta 49:3901
Rousseau S, Coutanceau C, Lamy C, Léger J-M (2006) J Power Sources 158:18
Antolini E, Colmati F, Gonzalez ER (2007) Electrochem Commun 9:398
Colmati F, Antolini E, Gonzalez ER (2007) J Electrochem Soc 154:B39
Zhou W, Zhou Z, Song S, Li W, Sun G, Tsiakaras P, Xin Q (2003) Appl Catal B: Environ 46:273
Roman-Martinez C, Cazorla-Amoros D, Yamashita H, de Miguel S, Scelza OA (2000) Langmuir 16:1123
Li H, Sun G, Cao L, Jiang L, Xin Q (2007) Electrochim Acta 52:6622
Umeda M, Ojima H, Mohamedi M, Uchida I (2004) J Power Sources 136:10
Shen PK, Tseung ACC (1994) J Electrochem Soc 141:3082
Tanaka S, Umeda M, Ojima H, Usui Y, Kimura O, Uchida I (2005) J Power Sources 152:34
McLeod EJ, Birss VI (2005) Electrochim Acta 51:684
Profeti LPR, Simões FC, Olivi P, Kokoh KB, Coutanceau C, Léger J-M, Lamy C (2006) J Power Sources 158:1195
Pechini MP, Adams N (1967) US Patent, 3,330,697:1
Ribeiro J, Alves PDP, de Andrade AR (2007) J Mater Sci 42:9293
Cullity BD (1978) In: Elements of X-Ray diffraction. Addison-Wesley, San Francisco, p. 102
Powder Diffraction File: 01-087-0646, 00-035-1360 and 00-041-0905 Joint Committee on Powder Diffraction Standards (2005) International Center for Diffraction Data, Vol. PDF-2, Pennsylvania, USA
Sutton LE (1965) In: Table of interatomic distances and configuration in molecules and ions, Supplement 1956–1959, Special publication No. 18, Chemical Society, London, UK
Hume-Rothery W, Smallman RE, Hayworth CW (1969) The structure of metals and alloy, London
Ribeiro J, de Andrade AR (2004) J Electrochem Soc 151:D106
Colmati F, Antolini E, Gonzalez ER (2007) Appl Catal B: Environ 73:106
Calegaro ML, Suffredini HB, Machado SAS, Avaca LA (2006) J Power Sources 156:300
Vielstich W (1968) In: Fuel cells: modern processes for the electrochemical production of energy, Wiley-Interscience
Lamy C, Lima A, Le Rhun V, Delime F, Coutanceau C, Léger J-M (2002) J Power Sources 105:283