MARC details
| 000 -CABECERA |
|---|
| campo de control de longitud fija |
07663cam a22002414a 4500 |
| 008 - DATOS DE LONGITUD FIJA--INFORMACIÓN GENERAL |
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| campo de control de longitud fija |
1985 |
| 020 ## - INTERNATIONAL STANDARD BOOK NUMBER |
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| International Standard Book Number |
0120583208 |
| 040 ## - FUENTE DE CATALOGACIÓN |
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| Centro catalogador/agencia de origen |
GAMADERO |
| Lengua de catalogación |
SPA |
| Centro/agencia transcriptor |
GAMADERO |
| 041 ## - CÓDIGO DE IDIOMA |
|---|
| Código de lengua del texto/banda sonora o título independiente |
Inglés |
| 050 00 - SIGNATURA TOPOGRÁFICA DE LA BIBLIOTECA DEL CONGRESO |
|---|
| Número de clasificación |
QD501H |
| Cutter |
3208 |
| Año |
1985 |
| 100 ## - ENTRADA PRINCIPAL--NOMBRE DE PERSONA |
|---|
| Nombre de persona |
J.R. ANDERSON |
| 9 (RLIN) |
3638 |
| 245 00 - MENCIÓN DEL TÍTULO |
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| Título |
INTRODUCTION TO CHARACTERIZATION AND TESTING OF CATALYSTS |
| 250 ## - MENCION DE EDICION |
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| Mención de edición |
1ra.edición |
| 260 3# - PUBLICACIÓN, DISTRIBUCIÓN, ETC. |
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| Lugar de publicación, distribución, etc. |
AUSTRALIA |
| Nombre del editor, distribuidor, etc. |
ACADEMIC PRESS |
| Fecha de publicación, distribución, etc. |
1985 |
| 300 ## - DESCRIPCIÓN FÍSICA |
|---|
| Extensión |
457 pg |
| Otras características físicas |
Ilustrado |
| Dimensiones |
18 cm x 24 cm |
| 505 ## - NOTA DE CONTENIDO CON FORMATO |
|---|
| Nota de contenido con formato |
Introduction<br/>1 Surface area measurement <br/>Physical adsorption of gases<br/>total surface area<br/>Chemisorption of gases<br/>Adsorption measurement methods<br/>References<br/>2 Particle size<br/>Representation of particle size<br/>Estimation of particle size<br/>References<br/>3 Pore structure<br/>Total pore volume<br/>Pore structure from physical adsorption<br/>Pore structure from mercury porosimetry<br/>Small angle X-ray scattering<br/>Small angle neutron scattering<br/>References<br/>4 Bulk properties<br/>Density<br/>Mechanical properties<br/>Thermal properties<br/>References<br/>5 Chemical characterization<br/>Surface acidity<br/>Surface basicity<br/>Miscellaneous aspects of surface group functionality<br/>Thermal analysis methods<br/>Chemical characterization of bimetallic catalysts<br/>References<br/>6 Testing of catalyst activity<br/>The objectives of catalyst testing<br/>Rates and limitations in laboratory reactors<br/>Types of reactors in the laboratory<br/>Peripheral equipment<br/>Automated reactors<br/>Off-the-shelf catalyst test units<br/>Standardization of catalyst activity testing methods<br/>Laboratory safety<br/>References<br/>7 Physical instrumental methods<br/>Electron microscopy<br/>Electron spectroscopy<br/>X-ray emission and absorption<br/>lon beam methods<br/>Mössbauer spectroscopy<br/>Magnetic resonance spectroscopy<br/>Vibrational spectroscopy<br/>UV-visible diffuse reflectance spectroscopy<br/>Photoacoustic spectroscopy (PAS)<br/>References<br/>Appendixes Index |
| 520 ## - RESUMEN, ETC. |
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| Resumen, etc. |
There are many reasons for catalyst characterization. Two illustrations will suffice. At one extreme, characterization can be a matter of commercial necessity: a catalyst manufacturer needs to demonstrate that his product meets a given set of specifications. At another extreme, characterization is an integral part of any worthwile catalytic research and development program. To carry out catalytic research with an ill-characterized catalyst is about as sensible as studying a chemical reaction when one of the reactants is un-<br/>known: it should not be done if it can possibly be avoided. The characterization of a catalyst provides information of three distinct but related sorts. These are: chemical composition and chemical structure, texture and mechanical properties, and catalytic activity.<br/>By chemical composition and chemical structure, we refer to matters such as: elemental composition: the composition, structure, and proportions of individual phases which may be present; surface composition: the nature and proportions of functional groups which may be present on the surface.<br/>The texture of a catalyst refers to its geometric structure and morphology. ranging from the grossest macroscale down to the finest microscale. This deals with. for instance, size and shape of individual catalyst units (for example, individual particles, pellets); pore structure; total surface area; the way in which individual phases are arranged relative to one another. The mechanical properties refer to those which are important to the integrity of the catalyst in an industrial application. This refers to matters such as abra-sion or attrition resistance, strength, and thermal shock resistance.<br/>The characterization of a catalyst in terms of its activity is obviously a quantitative measure of the ability of a catalyst to carry out a particular chemical transformation under specified conditions. Basically this will speci-fy a quantity such as speed of reaction, or some quantity related to speed of reaction, per unit quantity of catalyst. Bearing in mind that many catalytic reactions are not specific for the formation of a particular molecular product, the specification of activity must also include product selectivity.<br/>Ideally a catalyst would be characterized in terms of activity under exactly the same conditions as those under which it will be used in practice. This will often not be possible because the ultimate use may be in a very large-scale reactor, whereas for reasons of economy and convenience it is highly de-sirable, indeed often mandatory, that activity assessment be made on a small scale under reaction conditions that differ from those used on the large scale.<br/>It will often not be possible to estimate accurately large-scale behaviour from activity assessments made on a small scale, unless recourse is had to empir-ical correlations between data obtained in the two regimes. In any case, in assessing catalytic activity it is essential that the behaviour of the catalytic reactor be understood, so that the significance of the data obtained with it can be properly gauged.<br/>Under reaction conditions all catalysts suffer from progressive deacti-vation to some extent at least. In practice, deactivation limits the lifetime of the catalyst, and the effective lifetime is a parameter of considerable eco-nomic significance. In general, deactivation results either from a change in the chemical composition of the catalyst resulting from the addition or removal of matter, from a change in the texture and structure of the catalyst, or from a combination of these factors. If the reasons for deactivation are understood it may be possible to devise regeneration procedures, although in many cases this may not be possible, or be possible to only a limited extent. It will be clear that any study of deactivation and regeneration necessarily involves a study of the same characterization parameters as are used with a pristine catalyst.<br/>In principle, an account of methods for catalyst characterization has a vast range of scientific and technical techniques to draw upon. It is possible to make the case that virtually every technique known to materials science is of some potential value, and in addition there are many types of measurement which are peculiar to catalytic science. Nevertheless, experience has shown that out of this vast range, a relatively restricted number of techniques and types of measurement are of dominant importance: we have attempted to confine this book to these accepted methods. Even so, the field is quite large. and in many situations there are alternative techniques available. In some of these cases we have recommended a preferred method: this does not imply that we are pointing to an accepted standard method, merely that the pre-ferred method has given, in the author's experience, the best results, or for which good grounds for selection are clear.<br/>Assuming that one is dealing with a catalyst in some divided form (powder. pellets. and so on), it is necessary to say something about the problem of sampling. Many catalysts are materials which are produced commercially in large volumes, so that it is a matter of some importance for the sample which is to be used for a characterization procedure to be as representative as possible of the bulk material. In this situation, the sampling procedure will usually be related to the methods used for bulk handling at<br/>the end of the catalyst manufacturing process. Two golden rules for sampling have been suggested:<br/>1. The sample should be taken while the material is in motion |
| 526 ## - NOTA DE INFORMACIÓN SOBRE EL PROGRAMA DE ESTUDIO |
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| Program name |
Ingeniería Ambiental |
| 650 #0 - PUNTO DE ACCESO ADICIONAL DE MATERIA--TÉRMINO DE MATERIA |
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| Término de materia o nombre geográfico como elemento de entrada |
CATALYSTS |
| 9 (RLIN) |
3639 |
| 700 ## - ENTRADA AGREGADA--NOMBRE PERSONAL |
|---|
| Nombre de persona |
K. C. PRATT |
| 9 (RLIN) |
3640 |
| 942 ## - ELEMENTOS DE ENTRADA SECUNDARIOS (KOHA) |
|---|
| Fuente del sistema de clasificación o colocación |
Clasificación LC, Biblioteca del Congreso |
| Tipo de ítem Koha |
Libro |
| Edición |
1ra.edición |
| Suprimir en OPAC |
No |
| 945 ## - CATALOGADORES |
|---|
| Número del Creador del Registro |
1270 |
| Nombre del Creador del Registro |
María Elena Olvera Picina |
| Número de último modificador del registro |
1270 |
| Nombre del último modificador del registro |
María Elena Olvera Picina |
