ISO-15901-1-2005.pdf
《ISO-15901-1-2005.pdf》由会员分享,可在线阅读,更多相关《ISO-15901-1-2005.pdf(26页珍藏版)》请在三一文库上搜索。
1、 Reference number ISO 15901-1:2005(E) ISO 2005 INTERNATIONAL STANDARD ISO 15901-1 First edition 2005-12-15 Evaluation of pore size distribution and porosimetry of solid materials by mercury porosimetry and gas adsorption Part 1: Mercury porosimetry Distribution des dimensions des pores et porosimtri
2、e des matriaux solides par porosimtrie au mercure et par adsorption de gaz Partie 1: Porosimtrie au mercure ISO 15901-1:2005(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless t
3、he typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobes licensing policy. The ISO Central Secretariat accepts no liability in this area. Adobe is a trademark of
4、Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the
5、 unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ISO 2005 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, includi
6、ng photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published
7、 in Switzerland ii ISO 2005 All rights reserved ISO 15901-1:2005(E) ISO 2005 All rights reserved iii Contents Page Foreword iv Introduction v 1 Scope . 1 2 Normative references. 1 3 Terms and definitions. 2 4 Symbols. 4 5 Principles. 4 6 Apparatus and material 5 7 Procedures for calibration and perf
8、ormance. 5 8 Procedures 6 9 Evaluation 9 10 Reporting. 10 Annex A (informative) Mercury porosimetry analysis results for alumina reference sample 12 Bibliography. 18 ISO 15901-1:2005(E) iv ISO 2005 All rights reserved Foreword ISO (the International Organization for Standardization) is a worldwide f
9、ederation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that co
10、mmittee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accor
11、dance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requir
12、es approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 15901-1 was prepared by Technic
13、al Committee ISO/TC 24, Sieves, sieving and other sizing methods, Subcommittee SC 4, Sizing by methods other than sieving. ISO 15901 consists of the following parts, under the general title Evaluation of pore size distribution and porosimetry of solid materials by mercury porosimetry and gas adsorpt
14、ion: Part 1: Mercury porosimetry Part 2: Analysis of mesopores and macropores by gas adsorption Part 3: Analysis of micropores by gas adsorption ISO 15901-1:2005(E) ISO 2005 All rights reserved v Introduction In general, different pores (micro-, meso-, and macropores) can be pictured as either apert
15、ures, channels or cavities within a solid body or as space (i.e. interstices or voids) between solid particles in a bed, compact or aggregate. Porosity is a term which is often used to indicate the porous nature of solid material and is more precisely defined as the ratio of the volume of the access
16、ible pores and voids to the total volume occupied by a given amount of the solid. In addition to the accessible pores, a solid can contain closed pores which are isolated from the external surface and into which fluids are not able to penetrate. The characterization of closed pores is not covered in
17、 this International Standard. Porous materials can take the form of fine or coarse powders, compacts, extrudates, sheets or monoliths. Their characterization usually involves the determination of the pore size distribution as well as the total pore volume or porosity. For some purposes, it is also n
18、ecessary to study the pore shape and interconnectivity and to determine the internal and external specific surface area. Porous materials have great technological importance, for example in the context of the following: controlled drug release; catalysis; gas separation; filtration including sterili
19、zation; materials technology; environmental protection and pollution control; natural reservoir rocks; building materials properties; polymers and ceramic. It is well established that the performance of a porous solid (e.g. its strength, reactivity, permeability of adsorbent power) is dependent on i
20、ts pore structure. Many different methods have been developed for the characterization of pore structure. In view of the complexity of most porous solids, it is not surprising that the results obtained are not always in agreement and that no single technique can be relied upon to provide a complete
21、picture of the pore structure. The choice of the most appropriate method depends on the application of the porous solid, its chemical and physical nature and the range of pore size. The most commonly used methods are as follows: a) mercury porosimetry, where the pores are filled with mercury under p
22、ressure; this method is suitable for many materials with pores in the appropriate diameter of 0,003 m to 400 m; b) meso- and macropore analysis by gas adsorption, where the pores are characterized by adsorbing a gas, such as nitrogen, at liquid nitrogen temperature; the method is used for pores in t
23、he approximate diameter range of 0,002 m to 0,1 m (2,0 nm to 100 nm), and is an extension of the surface area estimation technique; c) micropore analysis by gas adsorption, where the pores are characterized by adsorbing a gas, such as nitrogen, at liquid nitrogen temperature; the method is used for
24、pores in the approximate diameter range of 0,4 nm to 2,0 nm, and is an extension of the surface area estimation technique. -,-,- -,-,- INTERNATIONAL STANDARD ISO 15901-1:2005(E) ISO 2005 All rights reserved 1 Evaluation of pore size distribution and porosimetry of solid materials by mercury porosime
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- ISO 15901 2005
链接地址:https://www.31doc.com/p-3776735.html