Download or read book Reducing Green House Effect Caused by Soot Via Oxidation Using Modified LaFe1 xCuxO3 Catalysts written by Paritosh C. Kulkarni and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soot has been the cause of global warming since the dawn of diesel engines. Soot oxidation in the diesel particulate filters fixated at the exhaust of the engine has been a boon to reduce the particulate matter from entering the atmosphere. Here we have attempted to synthesize the smooth powder of supported and macro-porous perovskite LaFeO3 and its doped variant with 5, 10, 20, and 30% copper on B site. Subsequent catalysts, termed as LFO and LFCO- (5, 10, 20, 30) with formula LaFe1-xCuxO3, were investigated as catalysts for soot oxidation reaction. The structural and physical and chemical attributes of LaFe1-xCuxO3 and LaFeO3 are characterized by XRD patterns, FESEM, BET, particle size analysis measurements. Undoped LaFeO3 with desired textural structures were successfully prepared, employing the citric-acid auto combustion method, and the porous sample exhibits the best activity towards redox reactions, pointing out the enriched activity at redox sites of fabrication of porous perovskite for the responses. By correlating with the catalytic activities and the physical and chemical properties, of both doped and undoped samples, it is inferred that the best activity obtained from the porous LaFe0.9Cu0.10O3 is attributed to its extensive surface area corresponding to least particle size, precious active lattice oxygen, high oxygen storage capacity and vigorous surface activity.
Download or read book Global Warming and Climate Change written by John P. Tiefenbacher and published by BoD – Books on Demand. This book was released on 2020-06-03 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: Global Warming and Climate Change includes scientific and social scientific studies that consider problems stemming from the phenomena of a warming Earth atmosphere, including natural responses to thermal flux, implications for transformations of energy pathways, human actions to adjust, adapt, and mitigate the effects of changing climates, and engineering and design efforts to stop the warming of and reverse the impacts to our environments. A small volume can only touch on several aspects of our challenges and can only offer a small glimpse at the activities of scientists and social scientists around the world, but the array of chapters herein offers unique insight into the scholarship.
Download or read book Sustainable Industrial Chemistry written by Fabrizio Cavani and published by John Wiley & Sons. This book was released on 2009-09-22 with total page 621 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years the need for sustainable process design and alternative reaction routes to reduce industry?s impact on the environment has gained vital importance. The book begins with a general overview of new trends in designing industrial chemical processes which are environmentally friendly and economically feasible. Specific examples written by experts from industry cover the possibilities of running industrial chemical processes in a sustainable manner and provide an up-to-date insight into the main concerns, e.g., the use of renewable raw materials, the use of alternative energy sources in chemical processes, the design of intrinsically safe processes, microreactor and integrated reaction/ separation technologies, process intensification, waste reduction, new catalytic routes and/or solvent and process optimization.
Download or read book Selectivity in Catalysis written by Mark E. Davis and published by . This book was released on 1993 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discusses recent research and provides tutorial chapters on enhancing selectivity in catalysis through stereoselectivity, reaction pathway control, shape selectivity, and alloys and clusters. Presents an interdisciplinary approach to increasing selectivity in homogeneous and heterogeneous catalysis research. Includes an overview chapter that discusses the current state of the field and offers a perspective on future directions.
Download or read book Graphite and Precursors written by Pierre Delhaes and published by CRC Press. This book was released on 2000-12-21 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: Humans first used carbon as chars from firewood in ritual paintings and primitive metallurgical processes. Natural forms of carbon have been known since antiquity, yet the knowledge of the carbon element in chemistry and its technical applications on a larger scale are a relatively recent development. The industrial revolution in Europe two centuries ago led the way to the numerous applications of these graphitic forms that are still used today. Graphite and Precursors features short tutorial articles on different topics related to the science and technology of carbons intended for engineers, students of Materials Science and scientists who are seeking a fundamental understanding without "reinventing the wheel." This first volume of the World of Carbon book series focuses on graphite and its precursors, including its origin and various implications. The basic properties of hexagonal graphite are developed, and several theoretical and experimental approaches explain why this crystalline solid is fascinating in solid state physics. Also featured are the numerous applications connected to thermal, mechanical and chemical graphites, as well as their various industrial uses in polycrystalline form. Finally, carbon precursors are introduced.
Download or read book Advanced Photocatalytic Materials written by Vlassios Likodimos and published by . This book was released on 2021 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: Semiconductor photocatalysts have attracted a great amount of multidiscipline research due to their high potential for solar-to-chemical-energy conversion applications, ranging from water and air purification to hydrogen and chemical fuel production. This unique diversity of photoinduced applications has spurred major research efforts on the rational design and development of photocatalytic materials with tailored structural, morphological, and optoelectronic properties in order to promote solar-light harvesting, easy photogenerated electron-hole recombination and the concomitant low quantum efficiency. This book presents a collection of original research articles on advanced photocatalytic materials, synthesized by novel fabrication approaches and/or innovative modifications that improve their performance in target photocatalytic applications such as water (cyanobacterial toxins, antibiotics, phenols, and dyes) and air (NOx and volatile organic compounds) pollutant degradation, hydrogen evolution, and hydrogen peroxide production by photoelectrochemical cells.
Download or read book Acidity and Basicity written by Eike Brunner and published by Springer Science & Business Media. This book was released on 2008-02-20 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first handbook on zeolites and other microporous materials. It is an up-to-date, highly sophisticated collection of information for those who deal with zeolites in industry or at academic institutions as well as being a guide for newcomers.
Download or read book Science and Technology of Semiconductor Surface Preparation Volume 477 written by Gregg S. Hagashi and published by . This book was released on 1997-09-30 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt: The focus of semiconductor wafer processing is rapidly changing. Pure device performance is no longer sufficient to ensure a technology's success as IC chips approach 1GB. Yield, reliability, cost and manufacturability are principal drivers of the industry. Great strides have been made in understanding the science and impact of front-end (pre-metal) chemical surface preparations and are beginning to influence the 'real' technology and its evolution. Efforts in understanding particle and metals removal, along with Si surface etching and microroughness are prime examples of areas where work is beginning to pay off together with processes related to the back-end (post-metal). The focus of this book is to report new findings and to discuss surface preparation with an emphasis on gaining a mechanistic understanding of the underlying science upon which the technology is based. Topics include: megasonic cleaning; SC1 technology; surface preparation and gate oxide reliability; CMP/CMP cleaning; post-etch processing; surface microroughness; wet chemical cleaning and gate oxide integrity; analytical studies of surfaces; wet chemical cleaning/etching; dry wafer cleaning; and environmentally friendly processing.
