Methods for Monitoring and Diagnosing the Efficiency of Catalytic Converters

Methods for Monitoring and Diagnosing the Efficiency of Catalytic Converters

Author: M. Sideris

Publisher: Elsevier

Published: 1998-06-19

Total Pages: 465

ISBN-13: 0080536492

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The dramatic evolution of catalytic converters in the last thirty years was a result of a need worldwide to reduce pollution created by the exhaust gases of internal combustion engines. Environmental concerns have led American, Japanese and European Union (EU) legislation to pose continuously stricter emission limits for petrol engines in the last decades. The catalytic converter has become the most important means of exhaust treatment to achieve the desired emission limits. The international legislation has also created a need for a regular assessment of the efficiency of the catalytic converter in order to detect a deterioration of its conversion efficiency as soon as this deterioration takes place. The assessment of conversion efficiency of a catalytic converter can take place during normal driving of a vehicle (on-board diagnosis or OBD) or in a workshop by specialized technicians. The most important methods nowadays are the OBD methods. The evolution of methods concerned with OBD and non-OBD monitoring and diagnosing of efficiency of catalytic converters of internal combustion engines is described based on patents and published patent applications. Non-patent references are also used. The basic principles of modern catalytic converters are described in an extensive Introduction, where the importance of monitoring and diagnosing the efficiency of catalytic converters is demonstrated. The book is divided into four parts. The first part describes methods involving the use of oxygen or air/fuel exhaust gas sensors to determine the oxygen storage capacity of a catalytic converter. The second part describes methods involving the use of temperature sensors to determine the exothermic reaction capacity of a catalytic converter. The third part describes all other methods existing in patent literature that monitor and diagnose the efficiency of catalytic converters. The great majority of the methods of the third part involves exhaust gas concentration measurements. The fourth part comprises a general discussion of all methods described. In the beginning of each part, a short introduction is given to explain the problem that the methods attempt to solve. The methods in each part are presented in chronological order per patent applicant. This helps to evaluate how the patent applicant has improved his methods over time. A patent number index with information about the patent applicants, inventors, priorities and patent-families, an inventor index, a company index and a subject index can be found at the end of the book.


Past and Present in DeNOx Catalysis: From Molecular Modelling to Chemical Engineering

Past and Present in DeNOx Catalysis: From Molecular Modelling to Chemical Engineering

Author: Pascal Granger

Publisher: Elsevier

Published: 2007-12-15

Total Pages: 419

ISBN-13: 0080554059

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This book offers an overview of the state of the art in the field of DeNOx catalysis in order to focus novel orientations, new technological developments, from laboratory to industrial scale. A particular attention has been paid towards the implementation of catalytic processes for minimising NOx emissions either from stationary or mobile sources under lean condition to meet future standard regulations of NOx emissions. In the first part of this book, critical aspects reported in the literature which usually make difficult the achievement of efficient catalytic technologies in those conditions are summarised and analysed in order two separate new perspectives. The second part deals with fundamental aspects at molecular level. A better understanding of the reactions involved under unsteady-state conditions is probably a pre-requisite step for improving the performances of the actual processes or developing original ones. The development of powerful in situ spectroscopic techniques is of fundamental interest for kinetic modelling. Correlations between spectroscopic and kinetic data with those obtained from theoretical calculations are reported. Some illustrations emphasise the fact that these comparisons may help in determining the nature of the catalytic active sites and building predictive tools for simulations under running conditions. The latter part of this book will be illustrated by different practical approaches covering various aspects related to the catalysts preparation and the development of alternative technologies which include industrial considerations.- New technological developments for investigating catalytic reactions in transient conditions (in situ and operando spectroscopic techniques)- Concerted approaches in DeNOx catalysis - How academic aspects (kinetic, in situ spectroscopic measurements) can provide useful information for practical applications- Comparison of different approaches provided by academic and industrial partners


New Developments and Application in Chemical Reaction Engineering

New Developments and Application in Chemical Reaction Engineering

Author: Hyun-Ku Rhee

Publisher: Elsevier

Published: 2006-05-10

Total Pages: 951

ISBN-13: 0080456510

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This Proceedings of APCRE'05 contains the articles that were presented at the 4th Asia-Pacific Chemical Reaction Engineering Symposium (APCRE'05), held at Gyeongju, Korea between June 12 and June 15, 2005, with a theme of "New Opportunities of Chemical Reaction Engineering in Asia-Pacific Region". Following the tradition of APCRE Symposia and ISCRE, the scientific program encompassed a wide spectrum of topics, including not only the traditional areas but also the emerging fields of chemical reaction engineering into which the chemical reaction engineers have successfully spearheaded and made significant contributions in recent years. In addition to the 190 papers being accepted, six plenary lectures and 11 invited lectures are placed in two separate chapters in the front.* Provides an overview of new developments and application in chemical reaction engineering* Topics include traditional and emerging fields * Papers reviewed by experts in the field


Petroleum Biotechnology

Petroleum Biotechnology

Author: Rafael Vazquez-Duhalt

Publisher: Elsevier

Published: 2004-09-18

Total Pages: 564

ISBN-13: 0080473717

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This book is one of a kind in the field of petroleum biorefining and biological upgrade of petroleum; it presents a critical review as well as an integrated overview of the potential biochemical processes, bridging the gap between academia and industry. It addresses today's demanding production challenges, taking into account energy efficient and environmentally friendly processes, and also looks at the future possibility of implementing new refinery systems. Suitable for those practitioners the petroleum industry, students and researchers interested in petroleum biotechnology.* Covers a new application field for biotechnology* Looks at innovative processes for the petroleum industry* Presents examples of modern environmental processes


Introduction to Zeolite Molecular Sieves

Introduction to Zeolite Molecular Sieves

Author: Jiri Cejka

Publisher: Elsevier

Published: 2007-10-02

Total Pages: 1095

ISBN-13: 008055041X

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Introduction to Zeolite Molecular Sieves, 3rd Edition presents a collection of the most important results and ideas in the field of molecular sieve chemistry and technology, the most important experimental techniques related to the research activities in molecular sieves, and identifies new areas of molecular sieve chemistry. Chapters start at a reasonably simple entry level, but also covers the present state-of-the-art in the field. Topics covered include structure, synthesis, characterization, ion exchange, adsorption, diffusion, separations, and natural zeolites.* 6 years since the last edtion this book brings together the rapid development within the field of molecular sieve chemistry and applications * Accessible to newcomers to the field, also containing valuable information for experienced researchers * 27 chapters written by renowned scientists in their field, including updates on some 2nd edition chapters


Proceedings of the International Conference on Colloid and Surface Science

Proceedings of the International Conference on Colloid and Surface Science

Author: Y. Iwasawa

Publisher: Elsevier

Published: 2001-02-15

Total Pages: 1129

ISBN-13: 0080529356

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The purpose of this Conference was to discuss the results of recent developments and the future prospect in science and technology of the field. The field has been growing and flourishing, while indicating many problems to be uncovered and solved. The conference was structured to encourage interaction and to stimulate the exchange of ideas to accomplish the above purpose.Key issues and materials related to the Conference were included as follows: • Molecular Assemblies in Solutions; • Fine Particles and Colloidal Dispersions; • Supramolecular Organized Films; • Nanostructural Solid Surfaces; • Industrial Applications and Products.The Conference comprised 2 plenary lectures, 42 invited lectures, 150 oral presentations and 266 poster presentations.


Natural Gas Conversion V

Natural Gas Conversion V

Author: A. Parmaliana

Publisher: Elsevier

Published: 1998-09-17

Total Pages: 1005

ISBN-13: 0080537308

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On January 1988, the ascertained and economically accessible reserves of Natural Gas (NG) amounted to over 144,000 billion cubic meters worldwide, corresponding to 124 billion tons of oil equivalents (comparable with the liquid oil reserves, which are estimated to be 138 billion TOE). It is hypothesized that the volume of NG reserve will continue to grow at the same rate of the last decade. Forecasts on production indicate a potential increase from about 2,000 billion cubic meters in 1990 to not more than 3,300 billion cubic meters in 2010, even in a high economic development scenario. NG consumption represents only one half of oil: 1.9 billion TOE/y as compared to 3.5 of oil. Consequently, in the future gas will exceed oil as a carbon atom source. In the future the potential for getting energetic vectors or petrochemicals from NG will continue to grow.The topics covered in Natural Gas Conversion V reflect the large global R&D effort to look for new and economic ways of NG exploitation. These range from the direct conversion of methane and light paraffins to the indirect conversion through synthesis gas to fuels and chemicals. Particularly underlined and visible are the technologies already commercially viable.These proceedings prove that mature and technologically feasible processes for natural gas conversion are already available and that new and improved catalytic approaches are currently developing, the validity and feasibility of which will soon be documented. This is an exciting area of modern catalysis, which will certainly open novel and rewarding perspectives for the chemical, energy and petrochemical industries.


Fischer-Tropsch Technology

Fischer-Tropsch Technology

Author: André Steynberg

Publisher: Elsevier

Published: 2004-10-30

Total Pages: 722

ISBN-13: 0080472796

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Fischer-Tropsch Technology is a unique book for its state-of-the-art approach to Fischer Tropsch (FT) technology. This book provides an explanation of the basic principles and terminology that are required to understand the application of FT technology. It also contains comprehensive references to patents and previous publications. As the first publication to focus on theory and application, it is a contemporary reference source for students studying chemistry and chemical engineering. Researchers and engineers active in the development of FT technology will also find this book an invaluable source of information. * Is the first publication to cover the theory and application for modern Fischer Tropsch technology * Contains comprehensive knowledge on all aspects relevant to the application of Fischer Tropsch technology* No other publication looks at past, present and future applications


Internal Combustion Engine Handbook

Internal Combustion Engine Handbook

Author: Richard Van Basshuysen

Publisher: SAE International

Published: 2016-03-07

Total Pages: 1152

ISBN-13: 0768082870

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More than 120 authors from science and industry have documented this essential resource for students, practitioners, and professionals. Comprehensively covering the development of the internal combustion engine (ICE), the information presented captures expert knowledge and serves as an essential resource that illustrates the latest level of knowledge about engine development. Particular attention is paid toward the most up-to-date theory and practice addressing thermodynamic principles, engine components, fuels, and emissions. Details and data cover classification and characteristics of reciprocating engines, along with fundamentals about diesel and spark ignition internal combustion engines, including insightful perspectives about the history, components, and complexities of the present-day and future IC engines. Chapter highlights include: • Classification of reciprocating engines • Friction and Lubrication • Power, efficiency, fuel consumption • Sensors, actuators, and electronics • Cooling and emissions • Hybrid drive systems Nearly 1,800 illustrations and more than 1,300 bibliographic references provide added value to this extensive study. “Although a large number of technical books deal with certain aspects of the internal combustion engine, there has been no publication until now that covers all of the major aspects of diesel and SI engines.” Dr.-Ing. E. h. Richard van Basshuysen and Professor Dr.-Ing. Fred Schäfer, the editors, “Internal Combustion Engines Handbook: Basics, Components, Systems, and Perpsectives”