Download or read book Contribution l tude des catalyseurs platine rh nium support s par l alumine gamma written by Carmelo Bolivar and published by . This book was released on 1974 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: PREPARATION DE CATALYSEURS PAR IMPREGNATION OU PAR ECHANGE. STRUCTURE ET TEXTURE DES CATALYSEURS. ACTIVITE POUR L'HYDROGENATION DU BENZENE
Download or read book Contribution l tude des catalyseurs platine alumine written by Bernard Roger and published by . This book was released on 1968 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Contribution l tude des catalyseurs platine alumine tude gravim trique de chimisorption written by Yolande Barbaux and published by . This book was released on with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Caract risation de catalyseurs platine rhodium sur alumine et sur zircone par spectroscopie XPS et r actions catalytiques written by Alain Airault and published by . This book was released on 1995 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: CE TRAVAIL A POUR OBJECTIF DE COMPARER LE COMPORTEMENT D'UNE ALUMINE GAMMA ET D'UNE ZIRCONE COMME SUPPORTS POUR DES CATALYSEURS BIMETALLIQUES PLATINE-RHODIUM. LES CARACTERISATIONS ONT PRINCIPALEMENT ETE EFFECTUEES A L'AIDE DE LA REACTION D'OXYDATION DU PROPANE EN SOUS-STOECHIOMETRIE D'OXYGENE (OXYDATION + VAPOREFORMAGE) ET DE LA SPECTROSCOPIE PHOTOELECTRONIQUE AUX RAYONS X (XPS). LES CATALYSEURS SUPPORTES SUR ALUMINE SONT TRES SENSIBLES AU TRAITEMENT OXYDANT: L'OXYDATION A HAUTE TEMPERATURE PROVOQUE UN FRITTAGE DES PARTICULES METALLIQUES ET UNE MIGRATION DU RHODIUM DANS LE SUPPORT. CES CATALYSEURS SONT REGENERABLES PAR UN TRAITEMENT REDUCTEUR QUI REDISPERSE LA PHASE METALLIQUE ET FAIT RESSORTIR LE RHODIUM. AVEC LA ZIRCONE POUR SUPPORT, LES CATALYSEURS SONT MOINS SENSIBLES AU FRITTAGE OXYDANT ET LA MIGRATION DU RHODIUM, OBSERVEE AVEC L'ALUMINE, N'A PAS LIEU. DE PLUS, L'ENRICHISSEMENT EN RHODIUM POUR LE BIMETALLIQUE (PTRH22Z) EST MOINDRE. NEANMOINS, LA REGENERATION EN MILIEU REDUCTEUR EST NEFASTE SI ELLE EST OPEREE A HAUTE TEMPERATURE SUR DES PARTICULES OXYDEES. C'EST POURQUOI ELLE DOIT ETRE OPEREE A BASSE TEMPERATURE. UNE RECALCINATION PERMET PAR AILLEURS DE REGENERER L'ACTIVITE OXYDANTE DES CATALYSEURS REDUITS RICHES EN PLATINE. LES CATALYSEURS DEPOSES SUR LA ZIRCONE PRESENTENT AUSSI DES PHENOMENES DE DESACTIVATION LIES A UNE ENCAPSULATION DE LA PHASE METALLIQUE PAR TRANSFORMATION DU SUPPORT LORS DES TRAITEMENTS A HAUTE TEMPERATURE. LE SUPPORT PEUT ETRE STABILISE PAR UNE PREREDUCTION DE LA ZIRCONE A TEMPERATURE ELEVEE AVANT L'IMPREGNATION DES SELS METALLIQUES. EN OUTRE, LE PRETRAITEMENT DU SUPPORT LIMITE LES PHENOMENES DE DESACTIVATION EN VAPOREFORMAGE ENTRE 550 ET 750C, PHENOMENES DEJA OBSERVES SUR L'ALUMINE ET LIES A LA FORMATION DE DEPOTS CARBONES. GRACE A CE PRETRAITEMENT, L'ACTIVITE INITIALE ET LA RESISTANCE AU FRITTAGE DES CATALYSEURS PLATINE-RHODIUM SUR ZIRCONE SONT CONSERVEES
Download or read book Contribution l tude des catalyseurs platine tain support s par l alumine written by Robert Bacaud and published by . This book was released on 1976 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Contribution l tude des catalyseurs bim talliques platine ruth nium sur alumine ou sur silice written by Gilbert Blanchard and published by . This book was released on 1982 with total page 159 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Management of Radioactive Wastes from the Nuclear Fuel Cycle written by and published by . This book was released on 1976 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Disposal of Radioactive Wastes Into the Ground written by and published by . This book was released on 1967 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Radioactivity Standards Distribution Program written by Lee H. Ziegler and published by . This book was released on 1976 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mass Transport in Oxides written by J. B. Wachtman and published by . This book was released on 1968 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Electrical Properties of Solids written by T. F. Connolly and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 115 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since 1963 the Research Materials Information Center has been answering inquiries on the availability, preparation, and properties of ultrapure inorganic research specimens. It has been possible to do this with reasonable efficiency by searching an automated coded microfilm collection of the report and open literature and of data sheets and question naires provided by commercial and research producers of pure materials. With the growth of the collection to over 70,000 documents and the increase in the demand for more general background information, it has been necessary to compile bibliographies on an increasing variety of subjects. These have been used as indexes to the microfilmed documents for more efficient searching, and in the past distributed in response to individual requests. However, their size and number no longer permit so casual and uneconomic a method of distribution. The "ORNL Solid State Physics Literature Guides" is a practical alternative. Organization The subject organization of the bibliography is given by the Table of Contents. Each section is preceded by a collection of reviews, bibliographies, and "general" papers (i.e., those dealing with methods or equipment rather than single materials, or with such a wide variety of materials that no subsection was appropriate). Coverage is generally from 1960 to mid-1970. Emphasis is on inorganic materials.
Download or read book Crystal Growth in Gels written by Heinz K. Henisch and published by Courier Corporation. This book was released on 1996-01-01 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: First book ever printed on growing crystals in a gel medium provides thorough descriptions of the procedure, its history and future potential. "Concise and readable."—Science. 42 illus. 1970 edition.
Download or read book Electrochemistry of Semiconductors written by Viktor Alekseevich Miamlin and published by Springer. This book was released on 1967-01-01 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physics of Electronic Conduction in Solids written by Frank J. Blatt and published by . This book was released on 1968 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: Classification of solids -- Lattice vibrations and lattice specific heat -- Equilibrium properties of a free-electron gas -- Electrons in a periodic lattice -- Transport equation -- Relaxation mechanisms -- Conductivity and related phenomena : metals -- Homogeneous semiconductors -- Rectifying junctions and transistors -- Optical properties of semiconductors -- Properties of semiconductors and metals in strong magnetic fields -- Appendix A. Summary of Elementary Quantum Mechanics -- Appendix B. Units and Conversion factors -- Appendix C. The Periodic Table -- Appendix D. Values of Important Physical Constants and Some Convenient Conversion Factors -- Appendix E. List of Symbols.
Download or read book Ferroelectric Materials and Ferroelectricity written by T. F. Connolly and published by Springer. This book was released on 2013-09-14 with total page 685 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is a joint effort of the Research Materials Information Center (RMIC) of the Solid State Division at Oak Ridge National Laboratory and the Libraries and Information Systems Center at Bell Telephone Laboratories (BTL) Murray Hill, N. J. The Research Materials Information Center has, since 1963, been answering inquiries on the avail ability, preparation, and properties of inorganic solid-state research materials. The preparation of bibliographies has been essential to this function, and the interest in ferroelectrics led to the compila tion of the journal and report literature on that subject. The 1962 book Ferroelectric Crystals, by Jona and Shirane, was taken as a cutoff point, and all papers through mid-1969 received by the Center have been included. The Libraries and Information Systems Center of BTL has, over a period of years, developed a proprie tary package of computer programs called BELDEX, which formats and generates indexes to biblio graphic material. This group therefore undertook to process RMIC's ferroelectric references by BELDEX so that both laboratories could have the benefit of an indexed basic bibliography in this important research area.
Download or read book The Growth of Single Crystals written by R. A. Laudise and published by Prentice Hall. This book was released on 1970 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chemical Physics of Semiconductors written by Jacques Paul Suchet and published by . This book was released on 1965 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
