Decomposition of methanol on Pt-loaded ceria

Imamura, Seiichiro; Higashihara, Takao; Saitō, Yoshio; Aritani, Hirofumi; Kanai, Hiroyoshi; Matsumura, Yukihiko; Tsuda, Noritoshi

doi:10.1016/s0920-5861(98)00516-1

Cited by 90 publications

(55 citation statements)

References 57 publications

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“…This suggests that the relatively small improvement observed in this sample can be attributed either to the large size of the Pt particles considered, or perhaps a partial encapsulation of the Pt particles by CeO 2 , also suggested in Ref. [46]. As previously discussed, the possibility of alloy formation in the Pt/CeO 2 samples might also give rise to detrimental effects in the reactivity of this system.…”

Section: Catalytic Activity and Selectivitysupporting

confidence: 59%

“…It has been reported that the Pt in Pt/CeO 2 is the main catalytic species for the decomposition of MeOH [46]. This suggests that the relatively small improvement observed in this sample can be attributed either to the large size of the Pt particles considered, or perhaps a partial encapsulation of the Pt particles by CeO 2 , also suggested in Ref.…”

Section: Catalytic Activity and Selectivitysupporting

confidence: 57%

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Support Dependence of MeOH Decomposition Over Size-Selected Pt Nanoparticles

et al. 2007

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We present here the decomposition of methanol over Pt nanoparticles supported on a series of oxide powders. The samples tested may be roughly grouped in two categories consisting of large (~ 15-18 nm) and small (~ 8-9 nm) Pt particles deposited on reducible (CeO 2 , TiO 2 ) and non-reducible (SiO 2 , ZrO 2 , Al 2 O 3 ) supports. The smallest particles (~ 8 nm), deposited on ZrO 2 , were found to be cationic and the most active for the decomposition of methanol. Furthermore, the stability of metallic Pt and its oxides was observed to be dependent on the choice of support. In all Pt containing samples the reaction proceeds via the direct decomposition of methanol, as no significant amounts of by-products were detected in the experimental range of 100 -300°C.

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Section: Catalytic Activity and Selectivitysupporting

confidence: 59%

Section: Catalytic Activity and Selectivitysupporting

confidence: 57%

Support Dependence of MeOH Decomposition Over Size-Selected Pt Nanoparticles

et al. 2007

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“…[6][7][8][9][10][11][12][13][14][15][16][17] The reactivity of ceria in oxidation reactions, include CO oxidation [18][19][20] and NO X reduction [21][22][23][24][25] is intertwined with the release and uptake of oxygen. Doping of ceria with other metal cations, such as Zr, La, Pd, Ti and Cu has been widely studied [26][27][28][29][30][31][32][33][34][35][36][37][38] to enhance reactivity in oxidation reactions. Also, catalysts based on mixed MgO-CeO 2 supports and Mg doping have been proposed for many different reactions.…”

Section: Q2mentioning

confidence: 99%

On the interaction of Mg with the (111) and (110) surfaces of ceria

Nolan

Lykhach

Tsud

et al. 2012

Phys. Chem. Chem. Phys.

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Access to the full text of the published version may require a subscription. Please note that, in the typefaces we use, an italic vee looks like this: n, and a Greek nu looks like this: n. RightsWe will publish articles on the web as soon as possible after receiving your corrections; no late corrections will be made.Please return your final corrections, where possible within 48 hours of receipt, by e-mail to: pccp@rsc.org.Reprints-Electronic (PDF) reprints will be provided free of charge to the corresponding author. The catalytic activity of cerium dioxide can be modified by deposition of alkaline earth oxide layers or nanoparticles or by substitutional doping of metal cations at the Ce site in ceria. In order to understand the effect of Mg oxide deposition and doping, a combination of experiment and first principles simulations is a powerful tool. In this paper, we examine the interaction of Mg with the ceria (111) surface using both angle resolved X-ray (ARXPS) and resonant (RPES) photoelectron spectroscopy measurements and density functional theory (DFT) corrected for onsite Coulomb interactions (DFT + U). With DFT + U, we also examine the interaction of Mg with the ceria (110) (111) surface. The combined results provide a basis for deeper insights into the catalytic behaviour of ceria-based mixed oxide catalysts.

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“…A promoter component was ceria, which has oxygen storage action [9][10][11][12][13][14]. Owing to this function, it promotes the action of various precious metals in the reactions in which hydrogen is involved as a reactant or product [15][16][17][18][19] …”

Section: Introductionmentioning

confidence: 99%