Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
The reactive products of laser ablated metals with simple gaseous reagents were characterized using high resolution molecular beam optical spectroscopy.
Generation, Detection and Characterization of Gas-phase Transition Metal Containing Molecules
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
The reactive products of laser ablated metals with simple gaseous reagents were characterized using high resolution molecular beam optical spectroscopy.
Generation, Detection and Characterization of Gas-phase Transition Metal Aggregates and Compounds. Final Technical Report, September 15, 1991--July 14, 1994
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 11
Book Description
The goal of this research project has been to identify and characterize small gas-phase metal containing molecules and relate these properties to proposed reaction mechanisms. Of particular emphasis has been the elucidation of the mechanism for activation of C-H, N-H, S-H, and C-C bonds in CH4, HCCH, H2S and NH3 by platinum, titanium, molybdenum, and niobium.
Generation, Detection and Characterization of Gas-phase Transition Metal Aggregates and Compounds
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 4
Book Description
The goal of our research is to employ spectroscopic techniques to characterize the bound portions of the potential energy surface (PES) for chemical systems involving diatomic and triatomic transition metal molecules. The approach incorporates the generation and isolation of new metal compounds via supersonic laser ablation molecular beam techniques. Detection and characterization is achieved using high resolution dye laser induced fluorescence spectroscopy. A major objective is to produce information which can be compared to theoretical predictions and thereby provide guidelines and insight into the development of reaction models.
Generation, Detection and Characterization of Gas-phase Transition Metal Aggregates and Compounds. Progress Report, Year One
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 4
Book Description
The goal of our research is to employ spectroscopic techniques to characterize the bound portions of the potential energy surface (PES) for chemical systems involving diatomic and triatomic transition metal molecules. The approach incorporates the generation and isolation of new metal compounds via supersonic laser ablation molecular beam techniques. Detection and characterization is achieved using high resolution dye laser induced fluorescence spectroscopy. A major objective is to produce information which can be compared to theoretical predictions and thereby provide guidelines and insight into the development of reaction models.
Scientific and Technical Aerospace Reports
Author: Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 376
Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Energy Research Abstracts
Author: Government Reports Announcements & Index
Author: Summaries of FY ... Research in the Chemical Sciences
Author: Catalysis by Transition Metal Sulphides
Author: RAYBAUD PascalPublisher: Editions TECHNIP
ISBN: 2710809915
Category : Science
Languages : en
Pages : 368
Book Description
The main application of Transition Metal Sulphides (TMS) as solid catalysts is for production of clean fuels in petroleum refineries. The various feedstocks to be processed all contain more or less sulphur, included in highly stable heteroaromatic molecules. In order to meet the stringent specifications imposed worldwide nowadays on transportation fuels to reduce their environmental impact, catalytic hydroprocessing remains essential. In this process, sulphur is removed as H2S following the reaction between molecular hydrogen and the heteroaromatics. The reaction conditions and reaction medium composition are such that only TMS provide stable catalysts, generally supported on alumina. Both for their fundamental and applied interest, these fascinating systems are still the subject of a very significant research effort, while major advances have been made over the past 30 years, involving innovative preparation routes, sophisticated surface science experiments for characterisation, detailed kinetic and mechanistic studies, and state of the art DFT simulations giving unprecedented insight into the local structure as well as elementary steps at microscopic level. This book aims at providing a complete, comprehensive and updated survey of the field, useful for anyone involved: the student starting a research project, the academic researcher or the refinery engineer willing to deepen their knowledge on the catalytic as well as on the process aspects. 37 specialists from IFP Energies nouvelles, CNRS, or French universities have contributed, reporting a unique synthesis of the last 15 years of research. The preface written by Michèle Breysse, a well known leading scientist who devoted most of her fruitful career to this topic, puts this collective work into a meaningful historical perspective. Contents : Part 1. Fundamental Aspects: Insights from DFT calculations and experimental surface sciences. 1. Periodic trends in catalysis by sulphides. 2. Atomic scale structures of mixed lamellar sulphides. 3. Theoretical and microkinetic studies of hydrotreatment reactions. 4. Models of supported Co(Ni)MoS Catalysts. Part 2. Progress in the preparation and characterisation of industrial hydrotreating catalysts. 1. Principles involved in the preparation of hydrotreatment catalysts. 2. Progress in the preparation of new catalysts. 3. Progress in the preparation of catalysts with controlled acidity: case of aluminosilicate supports. 4. Activation and genesis of the active phase by sulfidation. 5. life cycle of an HDT catalyst. 6. Charaterisation of catalysts. Part 3. Applications to the production of clean fuels. 1. An overview of refining. 2. Deep desulphurisation of middle distillates. 3. Selective desulphurisation of catalytic cracking gasolines. 4. Hydrocracking. 5. Hydroprocessing and hydroconversion of residue fractions. 6. Hydrotreatment of vegetable oils. 7. Hydroconversion of coals. Conclusion.
Dissertation Abstracts International
Author: Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 746
Book Description