Method of synthesis of CMK-3 carbon replica

The subject of the offer is an innovative, environmentally friendly method for obtaining of CMK-3 carbon replica, which may be a material useful in various catalytic and sorption processes as well as electrochemical applications. The method has a high potential for industrial application, and its use can significantly improve the production of high-ordered carbon materials with high surface area.

In recent years, various routes of synthesis of CMK-n-type carbon replicas have been intensively developed. The main goal of this research was to obtain carbon materials with surface properties typical of the commercially used activated carbons, but exhibiting highly ordered intraparticle porosity as well. The CMK-n-type carbon replicas, which have been developed, show the presence of mesopores avoiding diffusion limitations, characteristic for commercial, microporous activated carbons. The mesoporosity, highly expanded specific surface area and well-ordered porous microstructure of carbon replicas allow exposing a large number of surface sites, active in adsorption and catalytic processes, as has been strongly supported by promising results of application experiments published in the literature. The significant advantage of the carbon replicas compared to the commercial activated carbons is the possibility of precise control of the structure of synthesized material by suitably chosen conditions of synthesis and subsequent thermal treatment. Therefore, the extensive studies on the optimization of conditions of carbon replica synthesis have been performed. These investigations have been mainly focused on the simplification and shortening of the synthesis. However, all developed methods are multi-stage and involve using expensive and harmful reagents and solvents. These disadvantages make impossible the industrial implementation of these methods.

The aim of the presented invention was to develop a simplified method for preparing the CMK-3-type carbon replica using furfuryl alcohol as the carbon precursor.

The presented invention significantly simplifies the method of introduction of poly(furfuryl alcohol) into the channel system of silica sieve. Instead of the complicated procedure of modification of SBA-15 surface in order to form acidic sites followed by subsequent polycondensation, the one-step deposition process of poly(furfuryl alcohol) by the precipitation polycondensation performed in an aqueous slurry of hard template is proposed. The synthesis is carried out in an environmentally friendly water solvent, reducing additionally the energy consumption of overall process by omitting the thermal operations required during the typical surface modification of SBA-15. The process is therefore less energy- and time-consuming.

Patents:
WO 20,131,224,881 issued 2013-08-22   [MORE INFO]

Type of Offer: Sale or Licensing



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