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Advances in Catalyst Deactivation

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ISBN: 9783038421870 9783038421887 Year: Pages: X, 300 DOI: 10.3390/books978-3-03842-188-7 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Chemical Engineering
Added to DOAB on : 2016-06-07 11:25:06
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Catalyst deactivation, the loss over time of catalytic activity and/or selectivity, is a problem of great and continuing concern in the practice of industrial catalytic processes. Costs to industry for catalyst replacement and process shutdown total tens of billions of dollars per year. While catalyst deactivation is inevitable for most processes, some of its immediate, drastic consequences may be avoided, postponed, or even reversed. Accordingly, there is considerable motivation to better understand catalyst decay and regeneration. Indeed, the science of catalyst deactivation and regeneration has been developing rapidly as evidenced by the considerable literature addressing this topic, including 21,000 journal articles, presentations, reports, reviews, and books; and more than 29,000 patents for the period of 1980 to 2012. This developing science provides the foundation for continuing, substantial improvements in the efficiency and economics of catalytic processes through development of catalyst deactivation models, more stable catalysts, and regeneration processes. This special issue focuses on recent advances in catalyst deactivation and regeneration, including advances in (1) scientific understanding of mechanisms; (2) development of improved methods and tools for investigation; and (3) more robust models of deactivation and regeneration.

Advances in Natural Gas Technology

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ISBN: 9789535105077 Year: Pages: 556 DOI: 10.5772/2324 Language: English
Publisher: IntechOpen
Subject: Chemical Engineering
Added to DOAB on : 2019-10-03 07:51:49

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Natural gas is a vital component of the world's supply of energy and an important source of many bulk chemicals and speciality chemicals. It is one of the cleanest, safest, and most useful of all energy sources, and helps to meet the world's rising demand for cleaner energy into the future. However, exploring, producing and bringing gas to the user or converting gas into desired chemicals is a systematical engineering project, and every step requires thorough understanding of gas and the surrounding environment. Any advances in the process link could make a step change in gas industry. There have been increasing efforts in gas industry in recent years. With state-of-the-art contributions by leading experts in the field, this book addressed the technology advances in natural gas industry.

Advances in Plastic Forming of Metals

Authors: ---
ISBN: 9783038972600 9783038972617 Year: Pages: 282 DOI: 10.3390/books978-3-03897-261-7 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Chemistry (General) --- General and Civil Engineering --- Materials --- Chemical Engineering
Added to DOAB on : 2018-10-18 11:39:39
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The forming of metals through plastic deformation comprises a family of methods that produce components through the re-shaping of input stock, oftentimes with little waste. Therefore, forming is one of the most efficient and economical manufacturing process families available. A myriad of forming processes exist in this family. In conjunction with their countless existing successful applications and their relatively low energy requirements, these processes are an indispensable part of our future. However, despite the vast accumulated know-how, research challenges remain, be they related to the forming of new materials (e.g., for light-weight transportation applications), pushing the boundaries of what is doable, reducing the intermediate steps and/or scrap, or further enhancing the environmental friendliness. The purpose of this book is to collect expert views and contributions on the current state-of-the-art of plastic forming, thus highlighting contemporary challenges and offering ideas and solutions.

Analytische und numerische Untersuchungen der Dynamik von Vormischflammen sowie deren Interaktion mit Ringwirbelstrukturen

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ISBN: 9783866440999 Year: Pages: IX, 255 p. DOI: 10.5445/KSP/1000005450 Language: GERMAN
Publisher: KIT Scientific Publishing
Subject: Chemical Engineering
Added to DOAB on : 2019-07-30 20:02:00
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Die Verwendung des Konzeptes der Vormischverbrennung in technischen Verbrennungsanlagen fördert die Ausbildung von selbsterregten Instabilitäten.Der Schwerpunkt der Arbeit liegt in der Berechnung des dynamischen Verhaltens bzw. des Frequenzgangs von pulsierten turbulenten vorgemischten Axialstrahlflammen. Dieses steht unter dem Einfluss der Bildung von kohärenten Ringwirbelstrukturen an der Brennermündung. Es werden sowohl instationäre Flammen als auch Ringwirbelströmungen numerisch untersucht.

Aromaten in Phospholipid-Doppelschichten. Molekulardynamische Simulationen und experimentelle Validierung

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ISBN: 3866440049 Year: Pages: XI, 144 p. DOI: 10.5445/KSP/1000004091 Language: GERMAN
Publisher: KIT Scientific Publishing
Subject: Chemical Engineering
Added to DOAB on : 2019-07-30 20:02:02
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Ziel der Arbeit ist es, Vorgänge bei der Adsorption von gelösten Stoffen an hochstrukturierten Phospholipid-Membranen besser zu verstehen. Es wurden aromatische Stoffe als gelöste Stoffe ausgewählt, da diese in vielen Bereichen der Biologie, Pharmazie, Umweltwissenschaften und der Verfahrenstechnik eine bedeutende Rolle spielen.

Biodegradable Metals

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ISBN: 9783038973867 9783038973874 Year: Pages: 200 DOI: 10.3390/books978-3-03897-387-4 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Chemistry (General) --- Chemical Engineering
Added to DOAB on : 2018-12-06 10:15:09
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The interest in biocompatible and biodegradable metals, such as magnesium, is mainly related to their potential use as structural material for orthopedic and cardiovascular applications where a temporary medical device is required. However, in the case of magnesium, in vivo experiments have clearly shown that the corrosion degradation rate of magnesium and its alloys is too high and, hence, results in producing gas cavities that can promote the danger of gas embolism, tissue separation, and premature loss of mechanical integrity. The aim of this Special Issue on Biodegradable Metals is to explore and introduce innovative strategies to overcome the current limitations of magnesium.

Biotechnologische Methoden zur Kultivierung von Schwämmen : grundlegende Untersuchungen zur ex-situ Kultivierung mariner Porifera

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ISBN: 9783866442924 Year: Pages: XX, 172 p. DOI: 10.5445/KSP/1000009336 Language: GERMAN
Publisher: KIT Scientific Publishing
Subject: Chemical Engineering
Added to DOAB on : 2019-07-30 20:02:01
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Ziele der vorliegenden Arbeit waren die Entwicklung neuer und die Optimierung bereits angewendeter Methoden für eine dauerhafte ex-situ Kultivierung von Schwämmen als Lieferanten von pharmakologisch interessanten Naturstoffen. Verschiedene Kultivierungsparameter wurden hinsichtlich ihrer Auswirkungen auf die Vitalität und das Wachstum der Schwämme analysiert und vier Kultivierungsansätze getestet: Schwammfragmente, multizelluläre Reaggregate, Gemmulae & die Immobilisierung von Schwammzellen.

Catalytic soot oxidation by platinum on sintered metal filters. Influence of the platinum quantity, particle size and location, and investigation of the platinum-soot contact

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ISBN: 9783866441033 Year: Pages: VII, 135 p. DOI: 10.5445/KSP/1000005906 Language: ENGLISH
Publisher: KIT Scientific Publishing
Subject: Chemical Engineering
Added to DOAB on : 2019-07-30 20:02:00
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The great challenge for next years concerning the emission of diesel engines is to develop diesel particle filters (DPF) with catalytic regeneration systems. This work is focused on the global understanding of the diesel soot oxidation on sintered metal filters (SMF). Platinum is studied as reference catalyst. The first objective is to determine which of platinum quantity, platinum particle size, or platinum location exhibits the preponderant influence on the catalytic.

Science and Technology Governance and Ethics: A Global Perspective from Europe, India and China

Authors: --- --- ---
ISBN: 9783319146928 9783319146935 Year: Volume: 1 Pages: 173 DOI: 10.1007/978-3-319-14693-5 Language: English
Publisher: Springer
Subject: Chemical Engineering --- Business and Management --- Philosophy --- Manufactures
Added to DOAB on : 2015-07-24 16:44:14
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This book analyzes the possibilities for effective global governance of science in Europe, India and China. Authors from the three regions join forces to explore how ethical concerns over new technologies can be incorporated into global science and technology policies. The first chapter introduces the topic, offering a global perspective on embedding ethics in science and technology policy. Chapter Two compares the institutionalization of ethical debates in science, technology and innovation policy in three important regions: Europe, India and China. The third chapter explores public perceptions of science and technology in these same three regions. Chapter Four discusses public engagement in the governance of science and technology, and Chapter Five reviews science and technology governance and European values. The sixth chapter describes and analyzes values demonstrated in the constitution of the People’s Republic of China. Chapter Seven describes emerging evidence from India on the uses of science and technology for socio-economic development, and the quest for inclusive growth. In Chapter Eight, the authors propose a comparative framework for studying global ethics in science and technology. The following three chapters offer case studies and analysis of three emerging industries in India, China and Europe: new food technologies, nanotechnology and synthetic biology. Chapter 12 gathers all these threads for a comprehensive discussion on incorporating ethics into science and technology policy. The analysis is undertaken against the backdrop of different value systems and varying levels of public perception of risks and benefits. The book introduces a common analytical framework for the comparative discussion of ethics at the international level. The authors offer policy recommendations for effective collaboration among the three regions, to promote responsible governance in science and technology and a common analytical perspective in ethics.

Chemical Enhanced Oil Recovery (cEOR) - a Practical Overview

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ISBN: 9789535127000 9789535127017 9789535141716 Year: Pages: 202 DOI: 10.5772/61394 Language: English
Publisher: IntechOpen
Subject: Chemical Engineering
Added to DOAB on : 2019-10-03 07:51:49

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Commercial application of chemical enhanced oil recovery (cEOR) processes is expected to grow significantly over the next decade. Thus, Chemical Enhanced Oil Recovery (cEOR): A Practical Overview offers key knowledge and understanding of cEOR processes using an evidence-based approach intended for a broad audience ranging from field operators, researchers, to reservoir engineers dealing with the development and planning of cEOR field applications. This book is structured into three sections; the first section surveys overall EOR processes. The second section focuses on cEOR processes, while the final section describes the electrorheology technology. These sections are presented using a practical and realistic approach tailored for readers looking to improve their knowledge and understanding of cEOR processes in a nutshell.

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