Materials Chemistry of Cu-ZnO-based Catalysts for Methanol Synthesis and Steam Reforming PDF Download
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Author:
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ISBN:
Category :
Languages : en
Pages : 364
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Book Description
Author:
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ISBN:
Category :
Languages : en
Pages : 364
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Book Description
Author: Robert Schlögl
Publisher: Walter de Gruyter GmbH & Co KG
ISBN: 3110608596
Category : Technology & Engineering
Languages : en
Pages : 685
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Book Description
Energy – in the headlines, discussed controversially, vital. The use of regenerative energy in many primary forms leads to the necessity to store grid dimensions for maintaining continuous supply and enabling the replacement of fossil fuel systems. Chemical energy storage is one of the possibilities besides mechano-thermal and biological systems. This work starts with the more general aspects of chemical energy storage in the context of the geosphere and evolves to dealing with aspects of electrochemistry, catalysis, synthesis of catalysts, functional analysis of catalytic processes and with the interface between electrochemistry and heterogeneous catalysis. Top-notch experts provide a sound, practical, hands-on insight into the present status of energy conversion aimed primarily at the young emerging research front.
Author: Jerzy Skrzypek
Publisher:
ISBN:
Category : Catalysis
Languages : en
Pages : 174
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Book Description
Author: Stefan Zander
Publisher: Sudwestdeutscher Verlag Fur Hochschulschriften AG
ISBN: 9783838150208
Category :
Languages : en
Pages : 132
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Book Description
Methanol is one of the most important industrial base chemicals and also a starting material for many organic syntheses. A steadily rising amount is used as fuel or fuel additive because methanol can serve as liquid hydrogen carrier. In the chemical industry, methanol is produced from synthesis gas over Cu/ZnO based catalysts. The catalyst is prepared by a multi-step synthesis (co-precipitation, calcination, reduction). Already in early stages of the preparation structural characteristics can provide indications for the resulting activity of the final catalyst. In order to investigate correlations between preparation parameters, microstructure and activity of Cu/ZnO based catalysts, the effects of the pH during co-precipitation and aging, use of MgO instead of ZnO and doping with Ga-ions were examined in the present work. Precursors, calcined and reduced samples were investigated with different methods (XRD, XRF, physisorption, TPR, RFC, UV-Vis spectroscopy, XAS, XPS, SEM, TEM) and selected samples were tested in methanol synthesis.
Author: Hadis Morkoç
Publisher: John Wiley & Sons
ISBN: 3527623957
Category : Technology & Engineering
Languages : en
Pages : 488
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Book Description
This first systematic, authoritative and thorough treatment in one comprehensive volume presents the fundamentals and technologies of the topic, elucidating all aspects of ZnO materials and devices. Following an introduction, the authors look at the general properties of ZnO, as well as its growth, optical processes, doping and ZnO-based dilute magnetic semiconductors. Concluding sections treat bandgap engineering, processing and ZnO nanostructures and nanodevices. Of interest to device engineers, physicists, and semiconductor and solid state scientists in general.
Author:
Publisher:
ISBN:
Category : Catalysts
Languages : en
Pages : 180
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Book Description
Several methods (sol-gel method, co-precipitation, homogeneous-precipitation) have been comparatively examined for the preparation of binary Cu/ZnO-based catalysts with Cu/Zn molar ratios in 70/30, 50/50 and 30/70 copper acetate (Cu(CH3COO)2H2O) and zinc acetate (Zn(CH3COO)2 2H2O) and ethanol were used as precursor for preparation of Cu/ZnO catalyst by sol-gel method. For co-precipitation method were prepared by the addition rate of a mixed copper nitrate (Cu(NO3)2) and zince nitrate (Zn(NO3)2) solution with a sodium carbonate (Na2CO3) solution. For homogeneous precipitation method were prepared by urea instead of Na2CO3 solution. All Cu/ZnO catalysts were applied for the catalytic production of hydrogen by steam reforming of methanol (SRM). Homogeneous precipitation method is preferable for this reaction. Then, study effect of calcinations conditions. Cu/ZnO catalysts are calcined by various atmospheres. Gases were used as atmosphere as follows: nitrogen, oxygen, air and hydrogen. Cu/ZnO catalyst was calcined by hydrogen, is the higher activity than the other atmospheres. Physical and chemical properties of Cu/ZnO catalyst were characterized by various techniques including X-ray diffraction (XRD), BET surface area, N2O chemisorption, Thermal gravimetric and differential thermal analysis (TG/DTA), Transmission electron microscopy (TEM), and Fourier transform infrared spectroscopy (FT-IR).
Author: Martin Bertau
Publisher: Springer Science & Business Media
ISBN: 3642397093
Category : Technology & Engineering
Languages : en
Pages : 699
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Book Description
Methanol - The Chemical and Energy Feedstock of the Future offers a visionary yet unbiased view of methanol technology. Based on the groundbreaking 1986 publication "Methanol" by Friedrich Asinger, this book includes contributions by more than 40 experts from industry and academia. The authors and editors provide a comprehensive exposition of methanol chemistry and technology which is useful for a wide variety of scientists working in chemistry and energy related industries as well as academic researchers and even decision-makers and organisations concerned with the future of chemical and energy feedstocks.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 108
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Book Description
Author: Annemie Bogaerts
Publisher: MDPI
ISBN: 3038977500
Category : Technology & Engineering
Languages : en
Pages : 248
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Book Description
Plasma catalysis is gaining increasing interest for various gas conversion applications, such as CO2 conversion into value-added chemicals and fuels, N2 fixation for the synthesis of NH3 or NOx, methane conversion into higher hydrocarbons or oxygenates. It is also widely used for air pollution control (e.g., VOC remediation). Plasma catalysis allows thermodynamically difficult reactions to proceed at ambient pressure and temperature, due to activation of the gas molecules by energetic electrons created in the plasma. However, plasma is very reactive but not selective, and thus a catalyst is needed to improve the selectivity. In spite of the growing interest in plasma catalysis, the underlying mechanisms of the (possible) synergy between plasma and catalyst are not yet fully understood. Indeed, plasma catalysis is quite complicated, as the plasma will affect the catalyst and vice versa. Moreover, due to the reactive plasma environment, the most suitable catalysts will probably be different from thermal catalysts. More research is needed to better understand the plasma–catalyst interactions, in order to further improve the applications.
Author: Rafael Luque
Publisher: Royal Society of Chemistry
ISBN: 1788014901
Category : Science
Languages : en
Pages : 370
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Book Description
This book presents an introduction to the preparation and characterisation of nanomaterials and their design for specific catalytic applications.
