Microwave Solvothermal Technology (MSS) for nanoparticle synthesis

Andrzej Majcher 2Tadeusz Chudoba 1Jacek Wojnarowicz 1Jan Wiejak 2Jan Przybylski 2Adam Mazurkiewicz 2Witold Łojkowski 1

1. Institute of High Pressure Physics, Polish Academy of Sciences (UNIPRESS), Sokołowska 29/37, Warsaw 01-142, Poland
2. Institute for Sustainable Technologies, NRI, Control Systems Department, K. Pułaskiego 6/10, Radom 26-600, Poland


Microwave hydrothermal synthesis is one of hydrothermal processes that are used for the procurement of nanopowders with controlled chemical content and morphology characterised by minor differences in the size of the grains.

Most microwave hydrothermal synthesis reactions still take place in laboratory in modified microwave ovens. Commercial devices for microwave thermal syntheses can be divided into large closed vessel reactors, stop-flow reactors and flow reactors. Main drawbacks of existing solutions are as follows: low efficiency (in the case of large vessel reactors and stop-flow reactors), low flow of the substrate and the product of particularly thick suspensions in flow reactors, relatively low pressure and temperature of operation, the possibility of product contamination due to the contact with metal parts of reactor.

The response to these problems is the MSS2 reactor (fig. 1,2) – the icon of cooperation between the Institute for Sustainable Technologies and the Institute of High Pressure Physics. 

Fig1. View of the MSS2 reactor.

Fig.2.  Course of process variables for cyclical recurrence of technological recipe realisation.

The reactor has a unique design of a process chamber, which used in conjunction with a batch control system allows a highly efficient production of nanopowders to be obtained.

The MSS2 reactor and its previous version MSS1 can be used for the scale-up production of nanomaterials characterised by a high commercial potential, and can be applied particularly in electronic, optoelectonic, pharmaceutical, chemical, cosmetic, ceramic and machine industries.

The main areas of development of these devices, and simultaneously, cooperation with scientific partners and commercial companies include the following: improvements of reactors (new measurement systems, an intelligent reactor), design of new reactors (higher pressure, multi closed vessel), design of a technological line, mass production of new materials.

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Presentation: Poster at Nano PL 2014, Symposium A, by Jacek Wojnarowicz
See On-line Journal of Nano PL 2014

Submitted: 2014-06-21 02:57
Revised:   2014-09-30 16:58
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