High temperature membrane reactors for clean productions

Abstract

 The coupling of reaction and separation in the same device (membrane reactor) has been demonstrated to be an interesting way to enhance the performance of several reactions. In particular, by-products can be separated, side-reactions can be avoided and higher yields and conversions can be achieved. This means that the same conversions of traditional reactors can be obtained at more mild conditions (e.g. lower temperatures and pressures) with consequent energy saving and, thus, environmental benefits. Low temperatures are preferred also because they increase the life-time of the catalyst (it can be used for much longer time before it has to be regenerated) and reduce the tendency of both products and reactants to degrade (to avoid undesired side-reactions), which might lead to a loss of yield. Membrane reactors, then, seem to constitute a possible means for reducing waste production. In this paper the potential role of high temperature membrane reactors in clean productions is presented and discussed.