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Platinum Gold And Platinum Tin Bimetallic Catalysts Correlation Between Microstructure Miscibility And Activity
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Book Synopsis PLATINUM-GOLD AND PLATINUM-TIN BIMETALLIC CATALYSTS: CORRELATION BETWEEN MICROSTRUCTURE, MISCIBILITY, AND ACTIVITY. by : AMIT SACHDEV
Download or read book PLATINUM-GOLD AND PLATINUM-TIN BIMETALLIC CATALYSTS: CORRELATION BETWEEN MICROSTRUCTURE, MISCIBILITY, AND ACTIVITY. written by AMIT SACHDEV and published by . This book was released on 1989 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: microstructural information is vital in the interpretation of the catalytic reactivity trends.
Book Synopsis BIMETALLIC PLATINUM-GOLD AND PLATINUM-TIN CATALYSTS: REACTIVITY, ADSORPTION BEHAVIOR, AND SURFACE COMPOSITION (BIMETALLIC CATALYSTS). by : KRISHNAN BALAKRISHNAN
Download or read book BIMETALLIC PLATINUM-GOLD AND PLATINUM-TIN CATALYSTS: REACTIVITY, ADSORPTION BEHAVIOR, AND SURFACE COMPOSITION (BIMETALLIC CATALYSTS). written by KRISHNAN BALAKRISHNAN and published by . This book was released on 1991 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: partially reduced to a Sn (0) state. The interactions between platinum and an alumina-stabilized tin species (Sn (II), Sn (IV)) could explain the behavior of Pt-Sn/Al$\sb2$O$\sb3$ catalysts.
Book Synopsis New Frontiers in Catalysis, Parts A-C by : L. Guczi
Download or read book New Frontiers in Catalysis, Parts A-C written by L. Guczi and published by Elsevier. This book was released on 1993-04-20 with total page 2955 pages. Available in PDF, EPUB and Kindle. Book excerpt: These volumes comprise the proceedings of the major international meeting on catalysis which is held at 4 year intervals. The programme focussed on New Frontiers in Catalysis including nontraditional catalytic materials and environmental catalysis. The contributions cover a wide range of fundamental, applied, industrial and engineering aspects of catalysis. The extensive range of highly efficient industrial techniques for observing and characterizing catalytically important surfaces is evident. The programme covered the following sessions: Mechanism, theory, in situ methods; Catalytic reaction on atomically clean surfaces; Catalytic reaction on zeolites and related substances; New methods and principles for catalyst preparation; Hydrotreatment reactions (HDS, HDN); Characterization of catalysts, application of novel techniques; Selective oxidation; New catalytic aspects of heteropoly acids and related compounds; Reaction of hydrocarbons; Nontraditional catalytic materials; Fuel upgrading; Alkane activation; Acid-base catalysis; New selective catalytic reactons, fine chemicals; Environmental catalysis; Industrial catalysis, deactivation, reactivation; Synthesis from syngas; Electrocatalysis; Photocatalysis. The invited lectures and 433 papers included in these volumes present an update on all areas of catalysis and applications.
Book Synopsis American Doctoral Dissertations by :
Download or read book American Doctoral Dissertations written by and published by . This book was released on 1989 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Supported Bimetallic Catalysts Derived from Platinum-gold Phosphine Stabilized Cluster Compounds, Their Preparation, Characterization and Catalytic Activity by : Irina Vladimirovna Gubkina Graf
Download or read book Supported Bimetallic Catalysts Derived from Platinum-gold Phosphine Stabilized Cluster Compounds, Their Preparation, Characterization and Catalytic Activity written by Irina Vladimirovna Gubkina Graf and published by . This book was released on 1996 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Platinum-tin Bimetallic Catalysts Supported on L-zZeolite by : Hui Wang
Download or read book Platinum-tin Bimetallic Catalysts Supported on L-zZeolite written by Hui Wang and published by . This book was released on 1998 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 1990 with total page 684 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Platinum-tin Bimetallic Catalysts Supported on L-zeolite by : Hui Wang
Download or read book Platinum-tin Bimetallic Catalysts Supported on L-zeolite written by Hui Wang and published by . This book was released on 1997 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Catalytic Properties of Platinum and Tungsten Carbide-based Bimetallic Surfaces by : Michael P. Humbert
Download or read book Catalytic Properties of Platinum and Tungsten Carbide-based Bimetallic Surfaces written by Michael P. Humbert and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Bimetallic surfaces often possess catalytic properties that differ from those of their parent metals, often resulting in activities and/or selectivities higher than those achievable with a monometallic catalyst. In addition, it is possible that the properties of bimetallic catalysts can be tuned by controlling their composition. In a fuel cell, for example, modifying Pt with small amounts of Au has the ability to stabilize the Pt while maintaining the activity of unmodified Pt. However, while increasing the amount of Au improves the stability, it does so at the expense of the activity of the underlying Pt. A plethora of additional examples can be given, and it is the wide range of applications that these materials may impact that has been the driving force behind the study of their properties. One class of bimetallic catalysts that has received a great deal of attention is Pt modified by 3d transition metals. A novel low-temperature cyclohexene hydrogenation pathway was found on Ni-modified Pt. Specifically, subsurface Ni modification of Pt(111) resulted in the improved catalytic activity. In order to determine the driving force behind the improvement in activity on Pt-Ni-Pt(111), a study of the interaction of hydrogen and cyclohexene with these surfaces was performed. From these results it was hypothesized that a weaker hydrogen binding energy (HBE) and cyclohexene binding energy were responsible for the novel properties of the Pt-Ni-Pt(111) surface. However, results on Pt-Co-Pt(111) seemed to conflict with this hypothesis as this surface had a weaker HBE and cyclohexene BE than did Pt-Ni-Pt(111), yet the activity on Pt-Ni-Pt(111) remained higher. The aim of this work was to explain this apparent discrepancy. By extending the Ni and Co-modified Pt(111) results to Fe and Cu-modified Pt(111), a volcano plot was found that related hydrogenation activity to the binding energy of cyclohexene. Further, Pt-Ni-Pt(111) had a binding energy near the optimal value. Thus, while the binding energy of hydrogen and cyclohexene on Pt-Co-Pt(111) was lower than that on Pt-Ni-Pt(111), it was too low such that Co modification of Pt led to lower activity than Ni modification. A similar result held for the case of acrolein hydrogenation, for which it was found that Pt-Ni-Pt(111) also provided an optimal binding energy to promote hydrogenation. In addition to the obvious impact of these results, the ability to correlate hydrogenation activity to a value which can be determined from density functional theory calculations leaves open the possibility to predict a priori additional surfaces which may possess attractive catalytic properties. While these results were promising, it was important to determine if Pt surfaces more relevant to industrial catalysts possessed the same activity improvement through modification with Ni. To that end, the single crystal studies were extended to polycrystalline Pt. As on Pt(111), Ni modification of Pt foil increased the activity toward hydrogenation. However, it was found that subsurface Ni was not necessary to promote this reaction since the Ni-Pt-Pt foil surface was also active toward this pathway. This was hypothesized to be due to the decreased binding energy of cyclohexene on the Ni-Pt-Pt(100) facet, or due the ability of Ni to form an alloy with Pt defect sites at lower temperatures than on Pt(111). Thus, the importance of considering the effect of the presence of multiple crystal facets, step edges, grain boundaries, and other defects was demonstrated. While, it was found that subsurface Ni-modification of polycrystalline Pt was not necessary for the production of cyclohexane from cyclohexene, subsurface Ni was necessary for the production of benzene, which was attributed to the lower binding energy of the benzene intermediate on Pt-Ni-Pt foil. Similar results were found for the hydrogenation of acrolein on Nimodified Pt foil. Specifically, surface and subsurface Ni enhanced the C=C hydrogenation pathway while subsurface Ni was required to hydrogenate the C=O moiety. Finally, it was desired to utilize the Pt-like properties of WC to replace the bulk Pt in Pt-Ni-Pt to arrive at an analogous Pt-Ni-WC surface. The reaction pathways of cyclohexene and acrolein were studied on this surface with the result that the activities and selectivities for cyclohexene and acrolein hydrogenation were similar on the Pt-Ni-Pt and Pt-Ni-WC surfaces. This led to the conclusion that it may indeed be feasible to replace the bulk Pt while producing a cheaper, more stable alternative.
Book Synopsis Synthesis and Characterization of Bimetallic Platinum-gold Catalysts by : Corina Mihut
Download or read book Synthesis and Characterization of Bimetallic Platinum-gold Catalysts written by Corina Mihut and published by . This book was released on 2002 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Correlation Between the Catalytic Activity of Platinum and Its Ability to Absorb Hydrogen by : Donald H. McClelland
Download or read book A Correlation Between the Catalytic Activity of Platinum and Its Ability to Absorb Hydrogen written by Donald H. McClelland and published by . This book was released on 1966 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Structure-property Relationship of Supported Platinum/3d Bimetallic Catalysts by : William W. Lonergan
Download or read book Structure-property Relationship of Supported Platinum/3d Bimetallic Catalysts written by William W. Lonergan and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Nanotechnology in Catalysis 3 by : Bing Zhou
Download or read book Nanotechnology in Catalysis 3 written by Bing Zhou and published by Springer Science & Business Media. This book was released on 2007-09-05 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume continues the tradition formed in Nanotechnology in Catalysis 1 and 2. As with those books, this one is based upon an ACS symposium. Some of the most illustrious names in heterogeneous catalysis are among the contributors. The book covers: Design, synthesis, and control of catalysts at nanoscale; understanding of catalytic reaction at nanometer scale; characterization of nanomaterials as catalysts; nanoparticle metal or metal oxides catalysts; nanomaterials as catalyst supports; new catalytic applications of nanomaterials.
Book Synopsis Electrochemical Biosensors by : Serge Cosnier
Download or read book Electrochemical Biosensors written by Serge Cosnier and published by CRC Press. This book was released on 2015-01-26 with total page 405 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since four decades, rapid detection and monitoring in clinical and food diagnostics and in environmental and biodefense have paved the way for the elaboration of electrochemical biosensors. Thanks to their adaptability, ease of use in relatively complex samples, and their portability, electrochemical biosensors now are one of the mainstays of analy
Book Synopsis Metal Nanocrystals by : Kallum M. Koczkur
Download or read book Metal Nanocrystals written by Kallum M. Koczkur and published by American Chemical Society. This book was released on 2020-07-31 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: Our society depends heavily on metals. They are ubiquitous construction materials, critical interconnects in integrated circuits, common coinage materials, and more. Excitingly, new uses for metals are emerging with the advent of nanoscience, as metal crystals with nanoscale dimensions can display new and tunable properties. The optical and photothermal properties of metal nanocrystals have led to cancer diagnosis and treatment platforms now in clinical trials, while, at the same time, the ability to tune the surface features of metal nanocrystals is giving rise to designer catalysts that enable more sustainable use of precious resources. These are just two examples of how metal nanocrystals are addressing important social needs.
Book Synopsis Metal Nanoclusters in Catalysis and Materials Science: The Issue of Size Control by : Benedetto Corain
Download or read book Metal Nanoclusters in Catalysis and Materials Science: The Issue of Size Control written by Benedetto Corain and published by Elsevier. This book was released on 2011-08-11 with total page 471 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal Nanoclusters in Catalysis and Materials Science: The Issue of Size Control deals with the synthesis of metal nanoclusters along all known methodologies. Physical and chemical properties of metal nanoclusters relevant to their applications in chemical processing and materials science are covered thoroughly. Special attention is given to the role of metal nanoclusters size and shape in catalytic processes and catalytic applications relevant to industrial chemical processing.An excellent text for expanding the knowledge on the chemistry and physics of metal nanoclusters. Divided in two parts; Part I deals with general aspects of the matter and Part II has to be considered a useful handbook dealing with the production of metal nanoclusters, especially from their size-control point of view. * Divided into two parts for ease of reference: general and operational * Separation of synthetic aspects, physical properties and applications* Specific attention is given to the task of metal nanoclusters size-control
Download or read book Nanoalloys written by Florent Calvo and published by Newnes. This book was released on 2013-03-12 with total page 433 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanoalloys: From Fundamentals to Emergent Applications presents and discusses the major topics related to nanoalloys at a time when the literature on the subject remains scarce. Particular attention is paid to experimental and theoretical aspects under the form of broad reviews covering the most recent developments. The book is organized into 11 chapters covering the most fundamental aspects of nanoalloys related to their synthesis and characterization, as well as their theoretical study. Aspects related to their thermodynamics and kinetics are covered as well. The coverage then moves to more specific topics, including optics, magnetism and catalysis, and finally to biomedical applications and the technologically relevant issue of self-assembly. With no current single reference source on the subject, the work is invaluable for researchers as the nanoscience field moves swiftly to full monetization. Encapsulates physical science of structure, properties, size, composition and ordering at nanoscale, aiding synthesis of experimentation and modelling Multi-expert and interdisciplinary perspectives on growth, synthesis and characterization of bimetallic clusters and particulates supports expansion of your current research activity into applications Synthesizes concepts and draws links between fundamental metallurgy and cutting edge nanoscience, aiding interdisciplinary research activity