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Standard Test Method for Determination of Iodine Number of Activated Carbon
Automaticky přeložený název:
Standardní zkušební metoda pro stanovení jodu Počet aktivního uhlí
NORMA vydána dne 1.3.2014
Označení normy: ASTM D4607-14
Poznámka: NEPLATNÁ
Datum vydání normy: 1.3.2014
Kód zboží: NS-27876
Počet stran: 5
Přibližná hmotnost: 15 g (0.03 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Keywords:
ICS Number Code 75.160.10 (Solid fuels)
Significance and Use | ||||||||||||||||||||||
4.1 The iodine number is a relative indicator of porosity in an activated carbon. It does not necessarily provide a measure of the carbon's ability to absorb other species. Iodine number may be used as an approximation of surface area for some types of activated carbons (see Test Method C819). However, it must be realized that any relationship between surface area and iodine number cannot be generalized. It varies with changes in carbon raw material, processing conditions, and pore volume distribution (see Definitions D2652). 4.2 The presence of adsorbed volatiles, sulfur; and water extractables may affect the measured iodine number of an activated carbon. |
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1. Scope | ||||||||||||||||||||||
1.1 This test method covers the determination of the relative activation level of unused or reactivated carbons by adsorption of iodine from aqueous solution. The amount of iodine absorbed (in milligrams) by 1 g of carbon using test conditions listed herein is called the iodine number. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 This standard does not
purport to address all of the safety concerns, if any, associated
with its use. It is the responsibility of the user of this standard
to establish appropriate safety and health practices and determine
the applicability of regulatory limitations prior to use.
Circular 602—Testing of Glass Volumetric Apparatus Available
from National Institute of Standards and Technology (NIST), 100
Bureau Dr., Stop 1070, Gaithersburg, MD 20899-1070,
http://www.nist.gov. Standard Practice for Use of the Terms
Precision and Bias in ASTM Test Methods Standard Specification for Laboratory
Glass Volumetric Flasks Standard Practice for Sampling Industrial
Chemicals Standard Specification for Laboratory
Glass Graduated Burets Standard Specification for Woven Wire
Test Sieve Cloth and Test Sieves Standard Practice for Determination of
Adsorptive Capacity of Activated Carbon by Aqueous Phase Isotherm
Technique Standard Test Methods for Moisture in
Activated Carbon Standard Terminology Relating to
Activated Carbon Standard Specification for Reagent
Water Test Method for Specific Surface Area of
Carbon or Graphite (Withdrawn 1987) |
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