Journal ArticleDOI
Adsorption and Reaction of Methanol Molecule on Nickel Cluster Ions, Nin+ (n = 3−11)
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TLDR
In this article, the reactions of methanol on a size-selected nickel cluster ion, Nin+ (n = 3−11), were investigated at collision energies less than 10 eV in a beam-gas geometry.Abstract:
The reactions of methanol on a size-selected nickel cluster ion, Nin+ (n = 3−11), were investigated at collision energies less than 10 eV in a beam-gas geometry Dominant reactions were methanol chemisorption, demethanation, and carbide formation The absolute cross sections of these different reactions were measured and found to change dramatically with the cluster size; the demethanation proceeds preferentially on Ni4+, the carbide formation on Ni7,8+, and the chemisorption on Ni6+ A kinematic model explains the size-dependent characteristics that the chemisorption proceeds efficiently if the barrier height between the physisorbed and the chemisorbed states is low, and the demethanation and the carbide formation proceed otherwise The rate of the carbide formation depends sensitively on an Ni−Ni distance of Nin+ so that it proceeds only on Ni7,8+read more
Citations
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Journal ArticleDOI
Reactive scattering of clusters and cluster ions from solid surfaces
Hisato Yasumatsu,Tamotsu Kondow +1 more
TL;DR: In this paper, the authors explain the features of a cluster-impact process by dividing the collision energy into several energy ranges, in each of which a characteristic feature is manifested; high vibrational excitation of fullerenes in the lowest energy range, mechanical bond splitting of I − and a four-centre reaction between N2 and O2 in a higher energy range.
Journal ArticleDOI
Probing elementary steps of nickel-mediated bond activation in gas-phase reactions: Ligand- and cluster-size effects
Maria Schlangen,Helmut Schwarz +1 more
TL;DR: In this article, mass-spectrometry-based experiments are presented which demonstrate the richness of nickel-containing reagents when employed in various bond activation processes and conducted under single-collision conditions.
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Magnetic moment and local moment alignment in anionic and/or oxidized Fen clusters
TL;DR: The calculated adiabatic electron affinity and the vertical transitions from the anion to the neutral species are found to be in good agreement with the available negative ion photodetachment spectra, providing support to the calculated ground states including the noncollinear ones.
Journal ArticleDOI
Catalytic oxidation of hydrogen on free platinum clusters
Mats Andersson,Arne Rosén +1 more
TL;DR: In this article, the adsorption of hydrogen (deuterium) and oxygen on neutral platinum clusters has been investigated in a cluster beam experiment, where the beam passes through two low-pressure reaction cells and the clusters, with and without adsorbed molecules, are detected by laser ionization and mass spectrometry.
Journal ArticleDOI
Oxidation of CO and NO on Composition-Selected Cerium Oxide Cluster Cations
TL;DR: The collisional reactions of composition-selected cerium oxide cluster cations, CenOm(+) (n = 2-6; m ≤ 2n), with CO and NO have been investigated under single collision conditions using a tandem mass spectrometer, and it is found that the CO oxidation has a small activation barrier, whereas the NO oxidation is a barrierless process.
References
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Journal ArticleDOI
The structure of small nickel clusters. I. Ni3–Ni15
TL;DR: In this paper, the geometrical structure of small nickel clusters was probed via molecular adsorption of nitrogen on their surfaces, and the proposed structures can be rationalized with the predicted structures if it is assumed that N2 binds to every exposed nickel atom, that the binding energies decrease with increasing metal coordination, and that atoms that are four or less coordinate can bind two nitrogen molecules.
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Observation of a methoxy species on Ni(111) by high-resolution electron energy-loss spectroscopy
J.E. Demuth,H. Ibach +1 more
TL;DR: In this paper, a methoxy species (CH3O) was identified as a quasi-stable surface intermediate during the thermal decomposition of chemisorbed methanol.
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A detailed study of the reactions between size selected aluminum cluster ions, Al+n (n=3–26), and oxygen
Martin F. Jarrold,J. Eric Bower +1 more
TL;DR: In this paper, a detailed study of the reactions between size selected aluminum cluster ions and oxygen is presented, where measurements of product distributions and total reaction cross sections at collision energies of 1.2 and 4.2 eV for aluminum cluster ion with between 3 and 26 atoms are reported.
Journal ArticleDOI
Gas‐phase methanol solvation of Cs+ : Vibrational spectroscopy and Monte Carlo simulation
TL;DR: In this paper, the solvation of the cesium ion by methanol has been investigated by gas phase vibrational spectroscopy and Monte Carlo simulations of small ion clusters: Cs(CH3OH)+N, N=4-25.
Journal ArticleDOI
Bonding capabilities of nickel cluster ions: synthetic chemistry in a molecular beam
TL;DR: The stoichiometry of these clusters correlates extremely well with the electron-counting rules proposed by Lauher as discussed by the authors, where Ni/sub n/(CO)/sub k/n/C(CO) was treated with carbon monoxide to yield in the gas phase nickel-carbonyl complexes.
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