Download or read book Preparation of Nano and ngstr m Sized Cobalt Ensembles and Their Performance in the Fischer Tropsch Synthesis written by Nico Fischer and published by . This book was released on 2011 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cobalt Nanoparticles for Fischer Tropsch Synthesis written by and published by . This book was released on 2015 with total page 381 pages. Available in PDF, EPUB and Kindle. Book excerpt: La present tesis va consistir en el disseny de nous nanocatalitzadors de cobalt per a la reacció de Fischer-Tropsh (FT). Les nano partícules de Cobalt van ser sintetitzades utilitzant diferents metodologies: reducció química utilitzant borohidrur de sodi com agent reductor o, descomposició tèrmica de compostos organometàl·lics tals com Co2(CO)8. Les síntesis van ser realitzades en presència de polímers com agents estabilitzants. Després de la síntesis, les nano partícules de cobalt foren aïllades, caracteritzades (utilitzant TEM, HR-TEM, XRD, XPS, ICP, FTIR, TGA i RAMAN) i provades en la reacció de Fischer-Tropsch en fase aquosa. Amb la finalitat de comparar amb catalitzadors suportats clàssics, les nano partícules de cobalt van ser immobilitzades amb TiO2 i provades en FT utilitzant un reactor de llit fix. En aquest estudi es va observar que l'activitat i la selectivitat de les nanopartícules de cobalt en ambdós sistemes catalítics depenien altament de paràmetres tals com el mètode de síntesis, el polímer estabilitzant i la mida de partícula. Aquestes diferències van ser atribuïdes a variacions en l'estructura i composició de les nano partícules que alhora eren intrínseques de cada paràmetre d'estudi.
Download or read book Cobalt written by Khan Maaz and published by BoD – Books on Demand. This book was released on 2017-12-06 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cobalt is a brittle, hard, silver-grey transition metal with high melting point, hard-wearing at elevated temperatures, good corrosion resistance and improved chemical, magnetic and mechanical properties. This book aims to provide in-depth study and analyses of various synthesis and processing techniques and characterization of cobalt that can lead to its increased applications in recent technology. This book presents deep understanding of the new techniques from basic to the advance level for scientists and engineers. The chapters cover all major aspects about cobalt and its application in material characterization with special emphasis on both theoretical and experimental aspects. This book addresses engineering professionals, students and materials scientists.
Download or read book The Synthesis of Nano sized Cobalt Particle Stabilized by Alkanethiol and the Characterization on the Surface written by Sangsoo Kim and published by . This book was released on 2010 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanosized cobalt particles prepared through a reverse microemulsion, introduced by Zhang, X. and Chan, K. [1], were modified by capping alkanethiol. The synthesis of ligands capped cobalt particle and the density calculation of ligands on the surface were firstly reported from this paper. The alkanethiol capped on the surface of cobalt particles prevented from them to coagulate each other by collision. The obtained reddish solution where cobalt particles stabilized showed two distinct UV-absorption peaks. The bondage between cobalt and ligand created new energy levels where free electrons could excite when UV-light was shined. The bondage also confirmed by the Co-S peak on SERS (Surface Enhancement Raman Spectra). The number of ligands bounded on the cobalt was determined by the chemical shift on NMR (Nuclear Magnetic Resonance). The density of ligands on each particle was calculated by TGA (Thermal gravitational analysis), AFM (Atomic Force Microscopy) and NMR. Also, the bondage breakage was detected by the weight loss from TGA and increase heat flow from DSC. The present work focused on assessing the usage of cobalt particles as a homogenous catalyst in the Fischer Tropsch process. To obtain single phase under the reaction condition, the proper feed ratio of CO, H2, and C6H14 (Hexane) was estimated by Peng-Robinson equation with Kij value.
Download or read book Cobalt Compounds and Applications written by Yasemin Yıldız and published by BoD – Books on Demand. This book was released on 2019-12-18 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: In addition to theoretical information, this book provides information on cobalt compounds and nanoparticles made at selected universities and research centers around the world.This book includes information on new cobalt approaches, nanostructured cobalt, and new catalysts in some reactions and biological systems and technologies.I deeply appreciate the authors? great contributions to this work.We hope that the book will shed light on new horizons for scientists, engineers, and students.
Download or read book Fischer Tropsch Synthesis on Cobalt and Nickel written by Isabel Maria Braz De Figueriredo and published by . This book was released on 1976 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mechanistic Study of the High temperature Fischer Tropsch Synthesis Using Transient Kinetics written by Nilenindran Sundra Govender and published by . This book was released on 2010 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Autoclave Studies of Supported Cobalt Carbonyl Clusters for the Fischer Tropsch Synthesis written by Gregory Frederick Meyers and published by . This book was released on 1985 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sechsundsiebzigster Katalog griechischer und lateinischer Klassiker aus dem antiquarischen Lager von A Asher Co written by and published by . This book was released on 1866 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modern Syntheses of Cobalt III Complexes written by M. Yamatera H. Shibata and published by . This book was released on 2014-01-15 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modern Syntheses of Cobalt III Complexes written by M. Shibata and published by de Gruyter. This book was released on 1984-01-14 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis and Characterization of Ferromagnetic Polymer Coated Cobalt Nanoparticles in Multi Gram Quantities written by Sarah Grace Rasmussen and published by . This book was released on 2009 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACTFerromagnetic cobalt nanoparticles (CoNPs) are of interest due to their inherent dipolar properties which enable one-dimensional (1-D) nanoparticle self-assembly. As their magnetic properties change drastically with their size, the ability to selectively synthesize monodisperse metallic nanoparticles of varying diameters remains a crucial challenge. Although there have been extensive studies performed on various metallic nanoparticles yielding superparamagnetic materials (such as Fe3O4, Fe2O3, Co metals), research concerning the synthesis of ferromagnetic materials has only recently resurged within the last 20 years. In this work, methods for the synthesis of ferromagnetic cobalt nanoparticles on multi-gram scales were investigated. A one-pot synthetic method which produced up to 4 grams of cobalt nanoparticles per reaction was developed, and it was also found that this reaction had a direct correlation with particle size and reaction temperature, allowing for the large-scale synthesis of polystyrene-coated cobalt nanoparticles of pre-selected diameters.
Download or read book Synthesis of Colloidal Cobalt Nanoparticles with Controlled Size and Shapes written by and published by . This book was released on 2001 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis and Characterization of Cobalt containing Nanoparticles on Alumina a Potential Catalyst for Gas to liquid Fuels Production written by Jonathan Cowen and published by . This book was released on 2016 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Particle Size Dependence in Fischer Tropsch Synthesis written by and published by . This book was released on 1994 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis of Al2O3 Nanofibers Stabilized Co3O4 Nanoparticles as Highly Active and Stable Fischer Tropsch Synthesis Catalysts written by and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fischer Tropisch Synthesis on Cobalt and Nickel written by Isabel Maria Braz De Figueiredo and published by . This book was released on 1976 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt:
