Spillover and Migration of Surface Species on Catalysts book cover

Spillover and Migration of Surface Species on Catalysts

This fourth spillover conference in Dalian exhibits advances and new results in spillover studies since 1993.
In the proceedings, 5 invited lectures, 23 oral and 28 poster presentations are collected. In the 5 invited lectures, the active research areas are reviewed by well recognized scientists in the relevant fields. The first lecture highlights the fact that spillover plays a significant role in controlling the dynamic state of catalysts when it occurs in the catalytic process. The second lecture studies the surface mobility of oxygen and hydrogen using isotopic exchange method, and the impact of surface mobility on many catalytic processes is discussed. In the third paper the acidic functions of spilt-over hydrogen in a number of acid catalyzed reactions are well clarified. Subsequently, the fourth lecture explores electrochemically controlled spillover phenomenon over mm distances directly observed on metal catalysts. Finally, the last lecture reports the spontaneous dispersion of compounds onto supports and its importance in catalysis, and concludes that surface migration is a quite common process.
The conference papers present a number of aspects of spillover studies, such as new spillover phenomena, new methods for spillover characterization, spillover effects in catalysis, etc. Studies on migration and mobility of surface species are also included in the conference topics, as it is believed that the migration of species is a more general phenomenon, and spillover can be considered as a special case of migration. The spillover of hydrogen and oxygen is the major issue at the conference, while the spillover of larger molecules are reported as well in some papers. Simulation and modeling of spillover and surface mobility are also a very interesting subject in the meeting.

Audience
For catalytic scientists.

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Published: September 1997

Imprint: Elsevier

ISBN: 978-0-444-82333-5

Contents

  • Section headings and selected papers: Preface. Invited Lectures. Spillover controlled catalytic processes: from the atomic scale to macroscopic kinetics (B. Delmon). Study of surface mobility by isotopic exchange: recent developments and perspectives (D. Duprez). Acidic function of spilt-over hydrogen (K. Fujimoto, I. Nakamura). Direct STM, XPS and TPD observation of spillover phenomena over mm distances on metal catalyst films interfaced with solid electrolytes (C.G. Vayenas et al.). Surface migration and spontaneous monolayer dispersion of compounds onto supports (Youchang Xie et al.). Oral Presentations. Spillover Assisted Catalytic Effects (SPACE) - a new reaction model for bifunctionally catalyzed hydrocarbon conversions (F. Roessner et al.). Hydrogenation of carbonaceous adsorbed species on a zirconia aero-gel catalyst in presence of platinum (H. Kalies et al.). Influence of hydrogen spillover effect on the properties of Ni particles prepared by ultrasonic spray pyrolysis (S.R. Stopic et al.). Promotional effect of oxygen spillover in the ultrafine Mo-Ce oxide particle catalysts for selective oxidation of toluene (Yining Fan et al.). Oxidation of carbon monoxide over platinum-tin(IV) oxide catalysts: an example of spillover catalysis? (K. Grass, H-G. Lintz). Accumulation and migration of alkali halide molecules incident upon metal surfaces heated in high vacua (Hiroyuki Kawano et al.). Study on the role of platinum in PtMo/Al2O3 for hydrodesulfurization of dibenzothiophene (Jun Wang et al.). A new model on the nature of spiltover hydrogen (U. Roland, F. Roessner). Discovery of a new role of spillover hydrogen emitted by sulfided catalysts: creation of acidic sites on amorphous silica-alumina (A.M. Stumbo et al.). TPR of sulfated zirconia in the presence of Pt/NaY: migration of spilt-over hydrogen (Boqing Xu, W.M.H. Sachtler). State of portholes responsible for spillover of hydrogen in Pt/MoO3 (P.A. Sermon, K.M. Keryou). Spillover of oxygen species in the steam reforming of propane on ceria-containing catalysts (T. Maillet et al.). Poster Presentations. Oxygen exchange between C18O2 and basic metal oxides (CaO, MgO, ZrO2,ZnO) (B. Bachiller-Baeza et al.). Elementary steps in oxygen exchange on oxide surfaces: possible implications in oxygen migration (M. Colin et al.). FTIR investigation of HD-exchange of deuterium with the surface OH-groups of the HY, CoHY, NiNaY and Pt-HY zeolite catalysts (V.V. Rozanov, E.A. Rozanova). A comprehensive kinetic model for hydrotreating catalysis based on the remote control mechanism: HYD and HDS (Yongwang Li, B. Delmon). Temperature-programmed desorption study of the surface states during positive-ionic and neutral-molecular desorption from a lithium halide film on platinum (Yongfa Zhu et al.). The spillover of oxygen vacancies over strontium doped lanthanum manganite(LSM) cathode catalysts (Shizhong Wang et al.). Carbon deposition and migration on Pt and Pt-Sn catalysts (Zhusheng Xu et al.). Investigation of the thermal behaviour of Ag-Pd intermetallic compounds in hydrogen atmosphere (D. Minic et al.). Ammoxidation of propane over Mo-V-Nb-Te mixed oxide catalysts (Takshi Ushikubo et al.). Synthesis of titanium silicalite-1 from TPABr system (Xinwen Guo et al.). Author Index. Subject Index.

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