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Can I read Adsorption of Water Vapour from Humid Air by Selected Carbon Adsorbents on EtoBox?
Adsorption of Water Vapour from Humid Air by Selected Carbon Adsorbents by Patrycja Fastyn; Wojciech Kornacki; Tomasz Gierczak; Janusz Gawłowski; Jan Niedzielski is a Chemistry article available to read on EtoBox.
What is Adsorption of Water Vapour from Humid Air by Selected Carbon Adsorbents about?
The water uptake by carbon molecular sieves (CMS) and graphitized carbons, all of which are used to determine volatile organic compounds in air, was investigated using a direct experimental approach. CMS, e.g. Carboxen 1002, Carboxen 1003 and Anasorb CMS adsorb substantial amounts of water, in the range 400 to 450 mg per gram of adsorbent. Graphitized carbons, e.g. Carbrogaph 5TD and Carbopack X show low water trapping, less than 30 mg g(-1) and Carbopack Y as little as 5 mg g(-1) or less. The water sorption capacity for graphitized carbons is strongly dependent on the relative humidity (RH). The change of RH from 95 to 90% decreases the amount of adsorbed water by more than a factor of 2. Two different water adsorption mechanisms are operative: adsorption on polar centers and micropore volume filling. For graphitized carbons and CMS at low RH, adsorption on polar centers is involved. For CMS, once the threshold value of relative humidity (RHth) is surpassed, micropore volume filling becomes predominant. RHth is 44 +/- 3 and 42 +/- 3% for Carboxen 1002 and 1003, respectively, and 32 +/- 3% for Anasorb CMS. The CMS mass in the trap was found not to affect the mass of retained water
Who reads Adsorption of Water Vapour from Humid Air by Selected Carbon Adsorbents?
It is typically read by researchers, students, and practitioners in Chemistry.
- Author
- Patrycja Fastyn; Wojciech Kornacki; Tomasz Gierczak; Janusz Gawłowski; Jan Niedzielski
- Publisher
- Elsevier Science; Elsevier ; Elsevier BV (ISSN 1873-3778)
- Published
- 2005
- Language
- EN
- Field
- Chemistry (Physical Sciences)