Characteristics of an activated carbon monolith for a helium adsorption compressor


Lozano-Castello, D. and Jorda-Beneyto, M. and Cazorla-Amoros, D. and Linares-Solano, A. and Burger, J.F. and Brake, H.J.M. ter and Holland, H.J. (2010) Characteristics of an activated carbon monolith for a helium adsorption compressor. Carbon, 48 (1). pp. 123-131. ISSN 0008-6223

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Abstract:An activated carbon monolith (ACM) with a high helium adsorption/desorption capacity, high density, low pressure drop, low thermal expansion and good mechanical properties was prepared and applied successfully in a helium adsorption compressor as a part of a 4.5 K sorption cooler. The activated carbon (AC) used in the monolith preparation was selected from a series of ACs prepared from an anthracite and bituminous coals activated using KOH, NaOH and CO2, and having a variety of surface areas, micropore size distributions and packing densities. The selected AC was combined with a binder to prepare an ACM with suitable mechanical properties for machining. The results of this study, related to an helium sorption compressor includes: packing density, mechanical properties (compression strength, vibration tests), thermal expansion, pressure-drop measurements and also helium adsorption isotherms measured at high pressure (up to 35 bar) and low temperatures (from 20 K up to 150 K).
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Copyright:© 2010 Elsevier
Science and Technology (TNW)
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