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On the study of catalytic membrane reactor for water detritiation: Membrane characterization.

Mascarade, Jérémy and Liger, Karine and Troulay, Michèle and Joulia, Xavier and Meyer, Xuân-Mi and Perrais, Christophe and Tosti, Silvano On the study of catalytic membrane reactor for water detritiation: Membrane characterization. (2013) Fusion Engineering and Design, 88 (6-8). 844-848. ISSN 0920-3796

(Document in English)

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Official URL: http://dx.doi.org/10.1016/j.fusengdes.2013.01.057


Tritium waste recycling is a real economic and ecological issue. Generally under the non-valuable Q2Oform (Q = H, D or T), waste can be converted into fuel Q2for a fusion machine (e.g. JET, ITER) by isotopeexchange reaction Q2O + H2= H2O + Q2. Such a reaction is carried out over Ni-based catalyst bed packed ina thin wall hydrogen permselective membrane tube. This catalytic membrane reactor can achieve higherconversion ratios than conventional fixed bed reactors by selective removal of reaction product Q2bythe membrane according to Le Chatelier’s Law. This paper presents some preliminary permeation tests performed on a catalytic membrane reactor.Permeabilities of pure hydrogen and deuterium as well as those of binary mixtures of hydrogen, deu-terium and nitrogen have been estimated by measuring permeation fluxes at temperatures ranging from573 to 673 K, and pressure differences up to 1.5 bar. Pure component global fluxes were linked to perme-ation coefficient by means of Sieverts’ law. The thin membrane (150 �m), made of Pd–Ag alloy (23 wt.%Ag),showed good permeability and infinite selectivity toward protium and deuterium. Lower permeabilityvalues were obtained with mixtures containing non permeable gases highlighting the existence of gasphase resistance. The sensitivity of this concentration polarization phenomenon to the composition andthe flow rate of the inlet was evaluated and fitted by a two-dimensional model.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at : http://dx.doi.org/10.1016/j.fusengdes.2013.01.057
HAL Id:hal-03523381
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Commissariat à l'Energie Atomique et aux énergies alternatives - CEA (FRANCE)
French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > Italian National Agency for New Technologies, Energy and Environment - ENEA (ITALY)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Laboratory name:
Deposited On:24 Oct 2013 13:43

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