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  • Certification of the specific micropore volume and the median micropore width of two microporous reference materials according to Draft-DIN 66135-4, BCR-704, BCR-705

Abstract

This report describes the certification of the specific micropore volume and the median micropore width of two microporous reference materials (zeolites with 1-2 % clay as binder) according to Draft-DIN 66135-4 [1]. The adsorptive used for both materials was argon at the temperature of liquid argon. The report contains all the results of the 10 participating laboratories using 12 instruments. Furthermore, the data concerning the homogeneity and the stability studies are summarised. The Langmuir specific surface area and the density measured by helium gas pycnometry are given as indicative values.

Certified values were accompanied by an expanded uncertainty according to the requirements laid down in the Guide for the Expression of Uncertainty in Measurement (GUM) [2].

Additional information

Authors: ROHL-KUHN B, Federal Institute for Materials Research and Testing (BAM), Berlin (DE);KLOBES P, Federal Institute for Materials Research and Testing (BAM), Berlin (DE);MEYER K, Federal Institute for Materials Research and Testing (BAM), Berlin (DE);LORENZ P, Federal Institute for Materials Research and Testing (BAM), Berlin (DE);GAWLIK B M, European Commission, Joint Research Centre, Institute for Reference Materials and Measurements, Geel (BE);LAMBERTY A, European Commission, Joint Research Centre, Institute for Reference Materials and Measurements, Geel (BE);MUNTAU H, Universita degli Studi di Sassari, Sede Gemmata di Nuoro, Nuoro (IT)
Bibliographic Reference: EUR 21065 EN (2004), 38 pp. Free of charge
Availability: Available from European Commission, Joint Research Centre, Institute for Reference Materials and Measurements, Geel (BE) Tel: +32 (0)14 571 221 Fax: +32 (0)14 590 406 E-mail: jrc-publications-office@ec.europa.eu
ISBN: ISBN 92-894-7111-5
Record Number: 200417552 / Last updated on: 2004-06-15
Category: PUBLICATION
Original language: en
Available languages: en