Download or read book The Oxidation of Carbon Monoxide on Nanoassembled Model Catalysts written by Antonio Sanchez and published by . This book was released on 2000 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Oxidation of Carbon Monoxide on Nanoassembled Model Catalysts written by Antonio Sanchez (biochimiste.) and published by . This book was released on 2000 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Oxidation of Carbon Monoxide on Palladium Model Catalysts written by Frederick H. Rumpf and published by . This book was released on 1987 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Oscillatory Oxidation of Carbon Monoxide Over Pt Pd and Ir Catalysts written by John E. Turner and published by . This book was released on 1982 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Oxidation of Carbon Monoxide and Methane by Nano and Regular Fe2O3 written by Soon-Chul Kwon and published by . This book was released on 2005 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: The catalytic performances of nano and regular Fe2O3 in the oxidation of methane (CH4) and carbon monoxide (CO) singly and in combination were compared in a laboratory study. The major oxidation product is carbon dioxide (CO2). The performance of the nanocatalyst for oxidation of CH4 and CO was studied under variable conditions of temperature, concentration and space-time. It was demonstrated that 40 mg of Fe2O3 nanoparticles (NANOCAT superfine iron oxide) was much more effective than 400mg of non-nano Fe2O3-PVS (Bailey-PVS Oxides) in calatalyzing the oxidation. Furthermore, in the oxidative coupling of CH4 and CO, the efficiency of mixed gas conversion was also higher when NANOCAT was used as the catalyst than when Fe2O3-PVS was used, and almost complete oxidation of the mixed gas phases was observed. These results support the hypothesis that the small particle size (3nm), high surface area (245 m2/g), and denser surface coordination of the nanocatalyst can contribute to its better performance as a catalyst. Generally, the oxidation of CO and CH4 increased significantly with increase in temperature. In the presence of oxygen, the reaction is zero-order on CO. The oxidation efficiency was not affected by the CO concentrations at any temperature (more than 200°C). However, lower concentrations in the gas phase contributed to higher oxidation efficiency over the entire range of temperatures. The oxidation of CH4 is quite complicated, and has not been clearly delineated. An increase in the inlet gas flow rate caused a lower conversion rate. An examination of space time effect of CO oxidation reveals that the higher space time between carbon monoxide and NANOCAT has little or no effect on oxidation efficiency. In contrary to CO oxidation, the CH4 and mixed gas (CO and CH4) oxidations were accelerated by increased space time with NANOCAT.

Download or read book Catalytic Oxidation of Carbon Monoxide at Low Concentrations written by Avinash G. Mulay and published by . This book was released on 1961 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Catalytic Oxidation of Carbon Monoxide Over Palladium copper Nanoalloy Catalysts written by Eunjoo Kim and published by . This book was released on 2016 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Low Temperature Carbon Monoxide Oxidation Over Gold Supported on Iron Oxide Catalysts written by Chien Sze and published by . This book was released on 1995 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Oxidation of Carbon Monoxide on Platinum Catalysts written by William Reginald Choate Graham and published by . This book was released on 1990 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Catalysts for the oxidation of carbon monoxide at low temperatures written by J. K. Musick and published by . This book was released on 1979 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Catalytic oxidation of carbon monoxide over oxides of indium an written by Adrianus Jacobus Van Dillen and published by . This book was released on 19?? with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The catalytic oxidation of carbon monoxide over a metal surface written by Christopher Bloor and published by . This book was released on 1971 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Encyclopedia of Interfacial Chemistry written by and published by Elsevier. This book was released on 2018-03-29 with total page 5276 pages. Available in PDF, EPUB and Kindle. Book excerpt: Encyclopedia of Interfacial Chemistry: Surface Science and Electrochemistry, Seven Volume Set summarizes current, fundamental knowledge of interfacial chemistry, bringing readers the latest developments in the field. As the chemical and physical properties and processes at solid and liquid interfaces are the scientific basis of so many technologies which enhance our lives and create new opportunities, its important to highlight how these technologies enable the design and optimization of functional materials for heterogeneous and electro-catalysts in food production, pollution control, energy conversion and storage, medical applications requiring biocompatibility, drug delivery, and more. This book provides an interdisciplinary view that lies at the intersection of these fields. Presents fundamental knowledge of interfacial chemistry, surface science and electrochemistry and provides cutting-edge research from academics and practitioners across various fields and global regions

Download or read book Novel Photodeposited Catalysts for Carbon Monoxide Oxidation and Preferential Oxidation of Carbon Monoxide in the Presence of Hydrogen PROX written by Sze Chi Chan and published by ProQuest. This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: It has been shown that gold nanoparticles supported on metal oxides with sizes below 5 nm exhibit unique catalytic properties for CO oxidation, water-gas shift, and epoxidation of propylene. In particular, Au/TiO 2 exhibits CO oxidation activity at temperature as low as 90 K. Recent research reported that silver nanoparticles supported on TiO 2 are similar to Au nanoparticles supported on TiO 2 . Conventional methods for preparing Ag/TiO 2 and Au/TiO 2 supported catalysts include deposition-precipitation, wet impregnation and co-precipitation. Among these methods deposition-precipitation has shown the best results for these reactions due to the narrow size distribution of Ag and Au. The major disadvantage of the deposition-precipitation method is that Au and Ag particle sizes are very sensitive to precursor concentration. Preparation of Au particles less than 5 nm requires a low precursor concentration and low Au loading. In this work, a different approach, photodeposition, was used to prepare Ag and Au nanoparticles supported on TiO 2 . The main shortcoming of photodeposition is that its efficiency is very sensitive to both bulk and surface structural features. However, such problems can be overcome by reducing the size of TiO 2 particles to the nanoscale. Photodeposition of Ag nanoparticles on commercial TiO 2 particles and nanoparticles was performed on microscope grid-supported samples in order to provide direct visualization of the spatial distribution of photoactive sites on sub-micron-scale and nanoscale TiO 2 particle surfaces and to create materials for potential catalytic applications. HRTEM (high-resolution transmission electron microscopy) and HAADF-STEM (high-angle annular dark-field scanning transmission electron microscopy) were used to characterize these materials. The size and spatial distributions of the Ag nanoparticles on the commercial TiO 2 were not uniform; the concentration of Ag was higher on grain boundaries and at the edges of these submicrometer particles. In the case of TiO 2 nanoparticles, the size distribution of the Ag nanoparticles deposited was relatively uniform and independent of irradiation time and photon energy. The amount of Ag deposited on TiO 2 nanoparticles was at least 6 times higher than that on commercial samples for comparable irradiation conditions. Compared to the case of Ag photodeposition, the difference in the amount of Au photodeposited on TiO 2 particles and nanoparticles was even greater, especially at low precursor concentration. Photodeposition on TiO 2 nanoparticles is suggested as a potential method for the preparation of Ag/TiO 2 and Au/TiO 2 catalysts. The high photoreactivity of TiO 2 nanoparticles makes them an ideal material for preparation of supported metal catalysts when highly uniform nanoscale particle size is required. Extending the previous work, the Ag and Au photodeposition on TiO 2 nanoparticles were scaled-up from micro scale to laboratory scale to generate sample powders in sufficient quantity to be utilized in catalytic reactor. Most of the methods published for the preparation of metal-decorated TiO 2 by photodeposition involve suspended particles in a aqueous media. Our approach for the scale-up process was different, and was developed based on the sample preparation for metal photodeposition on microscope grids. A thin film of TiO 2 nanoparticle powders coated on a glass plate was obtained by using a spin-coating technique before metal photodeposition. Several commercial TiO 2 nanoparticles were used in this study, in order to choose appropriate samples for the scale-up experiments. Preliminary studies of the photoreactivity of commercial TiO 2 nanoparticles for Ag photodeposition on a microscope grid were carried out prior to the scale-up process. The effects of Ag photoreduction conditions, in particular the radiation source and the metal precursor solution concentration, on Ag photodeposition were investigated to determine the optimum conditions for the scale-up process. The size and spatial distribution of Ag nanoparticles, as well as the Ag loading on commercial TiO 2 nanoparticles for the scale up process under various conditions were determined using TEM and HAADF-STEM techniques. After the optimal conditions for the scale-up process were established, Ag/TiO 2 and Au/TiO 2 nanoparticles obtained from the scaled-up process were characterized by atomic absorption spectroscopy (AAS), X-ray diffraction (XRD), Xray photoelectron spectroscopy (XPS) and HAADF. In addition, Ag/TiO 2 and Au/TiO 2 nanoparticles were also prepared using traditional deposition-precipitation methods. The catalytic performance of Ag/TiO 2 and Au/TiO 2 nanoparticles prepared using two different methods for CO oxidation and preferential oxidation of CO in the presence of H 2 (PROX) were investigated using a high-throughput reactor. Results obtained from this study showed that the size of Ag particles, Ag loading, as well as preparation method contributed to the difference in activity of Ag/TiO 2 for CO oxidation and PROX. In the case of Au/TiO 2 the difference in activity for CO oxidation and PROX is mainly due to the preparation method and Au loading.

Download or read book The Oxidation of Carbon Monoxide with a Silver Catalyst written by Richmond Thomas Bell and published by . This book was released on 1934 with total page 505 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Catalytic Reduction of Nitric Oxide with Carbon Monoxide written by Yu Sim Ng and published by . This book was released on 1965 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Carbon Monoxide Oxidation Over Three Different Oxidation States of Copper written by Glenn Geoffrey Jernigan and published by . This book was released on 1994 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt: