2 edition of Infrared spectroscopic studies of a nickel alumina catalyst. found in the catalog.
Infrared spectroscopic studies of a nickel alumina catalyst.
Thesis (M.Phil.), School of Chemical Sciences, University of East Anglia, 1985.
Infrared spectroscopy of supported metal oxide catalysts Israel E. Wachs Zettlemoyer Center for Surface Studies and Department of Chemical Engineering, Lehigh University, Bethlehem, PA , USA Received 24 February ; accepted 30 June AbstractFile Size: KB. The growth and formation of oxide ﬁlms for infrared spectroscopy (RAIRS) has also been used use, for example, as model catalyst supports have to characterize thin alumina ﬁlms [6,10,11]. These been extensively studied using a range of surface- experiments have demonstrated that oxide ﬁlms.
Diffuse reflectance IR spectroscopy along with H2 and CO adsorption measurements were applied to the study of % Pt/-γ-Al2O3 catalyst precalcined in an air flow at K and then reduced at and K in hydrogen. Reduction of the catalyst at K results in formation of supported metallic Pt particles in SMSI (strong metal-support interaction) state, as evidenced by the Cited by: Aiming at the preparation of metal catalysts with nanoscale structures, Ni–Cu/Al2O3 nanoparticle catalysts (i.e., Ni&Cu-NP/γ-Al2O3), containing a certain amount of Ni and Cu were prepared for the hydrogenation of acetylene. The highly dispersed and stable Ni&Cu-NP/γ-Al2O3 catalyst .
The results of the infrared spectroscopic study of the interaction between furan and a vanadium oxide catalyst permit to suppose that the intermediates in furan oxidation are surface succinyl oxide and by: 3. Title: Operando Infrared Spectroscopic study on CO2 Methanation Catalysts Author: Per-Anders Carlsson Title: Operando Investigation of the Toluene Combustion on Palladium-Gold supported on ceria catalysts Authors: Aline Villarreal, Sebastian Collins Abstract: Toluene total oxidation on monometallic Au/CeO 2 and Pd/CeO 2, and bimetallic PdAu/CeO 2, catalysts was investigated by an operando.
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Infrared Spectroscopic Study of NO and NH3 Adsorption on Alumina-Supported Nickel Oxide Catalysts. Zeitschrift für Physikalische Chemie(6) DOI: /zpchCited by: Studies of supported nickel catalysts by X-ray photoelectron and ion scattering spectroscopies provided evidence that nickel does not interact with a silica support but forms nickel monoxide; that.
The aim of this work was to study the interaction between the metal precursor (nickel ions) and the alumina support surface by means of FT-IR and FT-IR/PAS occurring during different preparation procedures: CIM and by: 6.
Spectroscopic studies of alumina supported nickel catalysts precursors: Part II – catalysts prepared from alkaline solutions S. Pasieczna-Patkowska* and J. Rycz kowski. In the case of alumina-supported nickel catalysts the metal loading was varied from to 23 wt% in order to study the effects of metal-support interactions.
catalysts were prepared by both. The Nature of the Acidic Sites on a Silica-Alumina. Characterization by Infrared Spectroscopic Studies of Trimethylamine and Pyridine Chemisorption1. Article Views are the COUNTER-compliant sum of full text article downloads since November Cited by: Infrared Spectroscopy Studies on Sol-gel Prepared Alumina Powders New types of nickel catalysts are proposed.
The structural and acidic properties of sol–gel prepared alumina. Infrared Spectroscopic and Chemical Etching Study on the Crystallization Process of the B and E Forms of Stearic Acid: Roles of Dislocations in Single Crystals.
Journal of the American Chemical Society. Self-Assembly of CdSe−ZnS Quantum Dot Bioconjugates Using an Cited by: An infrared spectroscopy and temperature-programmed desorption study of carbon monoxide on molybdena/alumina catalysts: quantitation of the molybdena overlayer | The Journal of Physical Chemistry.
An infrared spectroscopy and temperature-programmed desorption study of carbon monoxide on molybdena/alumina catalysts: quantitation of the molybdena by: Fourier transform infrared spectroscopy has been used to study the adsorbed state of benzene (C 6 H 6 and C 6 D 6) on γ-alumina and alumina-supported Pt catalysts at K.
Benzene physisorbs on the alumina support with an infrared spectrum similar to that of liquid r, small increases in the energy of combination bands involving out-of-plane hydrogen vibrations and the formation Cited by: The application of infrared spectroscopy to probe the surface morphology of alumina-supported palladium catalysts Timothy Lear, Robert Marshall, J.
Antonio Lopez-Sanchez, and S. David Jackson Department of Chemistry, Joseph Black Building, University of Glasgow, Glasgow G12 8QQ, Scotland, United Kingdom Thomas M. Klapötke. Ni/α-Al 2 O 3 catalysts, prepared from nickel acetylacetonate, with low nickel contents (–3 wt.%), have been characterized after a reduction treatment at and °C by infrared spectroscopy of adsorbed CO (IR-CO), X-ray photoelectron spectroscopy (XPS), hydrogen chemisorption measurements, and temperature-programmed reduction (TPR).).
Relatively high dispersion and Cited by: Microcalorimetric adsorption and infrared spectroscopic studies of supported nickel catalysts for the hydrogenation of diisopropylimine to diisopropylamine stability and metal/support interactions in nickel/alumina catalysts.
Stud. Surf. Sci. Catal., 16 (), pp. S.D. Hee, K. KimFourier-transform infrared spectroscopic study Cited by: 2. Materials The catalysts used were and wt % nickel supported on y-alumina. preparation and treatment of those catalysts were described previously ().
Ultra high purity hydrogen (%) and research grade carbon monoxide (%) were both purchased from Matheson of Canada and used without further by: 1. Qualitative infrared and electronic spectroscopic data for a series of nickel(II) amine complexes suggest structures involving octahedral (transtetragonal) symmetry and associated with varying degrees of cation-anion interaction.
N-methyl ligand substituents contribute significantly to ligand conformations, complex symmetry, and cation-anion steric by: of 8 moles S-l m-3 of catalyst and H2/oil molarr!ltio of The duration of the run was x s.
Results and discussion Magnetic susceptibility studies Both W03 and alumina are diamagnetic and the observed magnetic behaviour of the catalyst is due mainly to nickel.
The FIR spectra are in harmony with the FT-Raman spectra. Far-infrared spectroscopy allows the study and differentiation of the stretching of AlO4 units to characterize these four alumina phases. FTIR spectroscopic study on nickel(II)-exchanged sulfated alumina: Nature of the active sites in the catalytic oligomerization of ethene By A.A.
Davydov, M. Kantcheva and M.L. Chepotko No static citation data No static citation data CiteAuthor: A.A. Davydov, M. Kantcheva and M.L. Chepotko. The industrially important interaction of methanol with an η-alumina catalyst has been investigated by a combination of infrared spectroscopy (diffuse reflectance and transmission) and inelastic neutron scattering (INS) infrared and INS spectra together show that chemisorbed methoxy is the only surface species present.
Confirmation of the assignments was provided by a Cited by: A comparative study of the hydrogen chemisorption properties and catalytic activities for the CO–H 2 reaction of two Ni/CeO 2 catalysts has been carried out.
These catalysts are obtained by reduction of Ni(OH) 2 precipitated on ceria supports differing by their preparation. At the precursor state, a more intense interaction occurs between nickel hydroxide and the ceria support of sample C 1 Cited by:. Surface Chemistry and Spectroscopy of Chromium in Inorganic Oxides.
Chemical Reviews96 (8), DOI: /cro. Bert M. Weckhuysen and, Israel E. Wachs. In Situ Raman Spectroscopy of Supported Chromium Oxide Catalysts: Reactivity Studies with Methanol and by: recently by Stencel in a book entitled Raman Spectroscopy for Catalysis which gathers literature acquired from to Most of the previously reported Raman studies on supported metal oxide catalysts, however, were performed under ambient conditions, File Size: 1MB.
The nature of the active sites in nickel(II)-exchanged sulfated alumina in the reaction of ethene oligomerization has been studied by means of FTIR spectroscopy of adsorbed CO. It has been established that isolated nickel(I) species are the active sites in this process. These sites are formed by a reduction process, in which protonic centers are by: