TY - RPRT A1 - Röhl-Kuhn, Barbara A1 - Klobes, Peter A1 - Meyer, Klaus A1 - Lorenz, Peter A1 - Lamberty, A. A1 - Gawlik, B. A1 - Muntau, H. T1 - Certification of the specific micropore volume and the median width of two microporous reference materials according to Draft-DIN 66135-4 KW - Poröse Materialien KW - ZRM-Entwicklung KW - Gasadsorption KW - Mikroporenbestimmung PY - 2004 UR - https://ec.europa.eu/jrc/sites/default/files/rm/BCR-704_report.pdf SN - 1018-5593 IS - 21065 SP - I-III, 5-38 PB - Office for Official Publications of the European Communities CY - Luxembourg AN - OPUS4-5195 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Meyer, Klaus A1 - Lorenz, Peter A1 - Röhl-Kuhn, Barbara A1 - Klobes, Peter T1 - Porous Solids and their Characterization N2 - Porous and finely divided solids are distinguished by a large surface to volume ratio. As a result, they have specific properties, such as enhanced reactivity, a high adsorption capacity, and a lowered sinter temperature. This contribution gives a survey over selected aspects of porous solids, with tlfe main emphasis on methods of characterization and their applications. We treat porous solids with a regular pore network (zeolites) and irregular pore structure (sintered compacts,rocks). After a short review of the possibilities orf characterization, we wilI describe the methods of gas adsorption and Hg intrusion in detail. Furthermore, we will give a critical assessment of the measurement of typical characterization parameters, such as the spedfic surface area, the pore volume and the pore volume distribution. The fractal character of large-surface and porous solids and the related uncertainty of the outcomes of measurements result in the necessity of standardization of experimental procedures and in the need for reference materials. The section on applications treats examples of porous solids from different areas: densification of ceramic materials, porous ceramic carriers for flue gas desulfurization, technical catalysts (zeolite/binder), zeolites for the separation of substances, sedimentary and crystalline rocks. PY - 1994 SN - 0023-4753 SN - 1521-4079 SN - 0232-1300 VL - 29 IS - 7 SP - 903 EP - 930 PB - Wiley-VCH Verlag GmbH & Co. KGaA CY - Weinheim AN - OPUS4-11954 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -