caa a22 4500 475764285 CHVBK 20180406123600.0 cr unu---uuuuu 170329e20001001xx s 000 0 eng 10.1007/s003960000348 doi (NATIONALLICENCE)springer-10.1007/s003960000348 A chitosan-templated monolithic siliceous mesoporous-macroporous material [Elektronische Daten] [V. Pedroni, P. C. Schulz, M. E. Gschaider de Ferreira, M. A. Morini]  We synthesised a porous siliceous material via hydrothermal hydrolysis of sodium silicate, using chitosan as a template. As far as we know, this is the first synthesis of siliceous porous material using chitosan as a template in a hydrothermal way. A fibrous material was obtained, whose macroscopic fibres were formed by a spongelike siliceous network with pores having a radius of 0.57 μm. The siliceous walls of the pores were, in turn, of the form of a microporous-mesoporous material; the pore radius distribution was polymodal with maxima at 0.84, 1.0, 1.2 and 1.5 nm and a broad band between 3 and 10 nm. This structure may be due to the aggregation of the hydrated chitosan helices in bundles of parallel fibres with different size and the gelation of the system. The aggregation process might be induced by the addition of silicate. Springer-Verlag Berlin Heidelberg, 2000 Key words MCM-41 synthesis nationallicence Chitosan nationallicence Mesoporous-macroporous material nationallicence Monolithic material nationallicence Pedroni V. Departamento de Química e Ingeniería Química, Universidad Nacional del Sur 8000 Bahía Blanca, Argentina e-mail: pschulz@criba.edu.ar, AR aut Schulz P. C. Departamento de Química e Ingeniería Química, Universidad Nacional del Sur 8000 Bahía Blanca, Argentina e-mail: pschulz@criba.edu.ar, AR aut Gschaider de Ferreira M. E. Departamento de Química e Ingeniería Química, Universidad Nacional del Sur 8000 Bahía Blanca, Argentina e-mail: pschulz@criba.edu.ar, AR aut Morini M. A. Departamento de Química e Ingeniería Química, Universidad Nacional del Sur 8000 Bahía Blanca, Argentina e-mail: pschulz@criba.edu.ar, AR aut https://doi.org/10.1007/s003960000348 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s003960000348 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Pedroni V. Departamento de Química e Ingeniería Química, Universidad Nacional del Sur 8000 Bahía Blanca, Argentina e-mail: pschulz@criba.edu.ar, AR aut NATIONALLICENCE 700 1- Schulz P. C. Departamento de Química e Ingeniería Química, Universidad Nacional del Sur 8000 Bahía Blanca, Argentina e-mail: pschulz@criba.edu.ar, AR aut NATIONALLICENCE 700 1- Gschaider de Ferreira M. E. Departamento de Química e Ingeniería Química, Universidad Nacional del Sur 8000 Bahía Blanca, Argentina e-mail: pschulz@criba.edu.ar, AR aut NATIONALLICENCE 700 1- Morini M. A. Departamento de Química e Ingeniería Química, Universidad Nacional del Sur 8000 Bahía Blanca, Argentina e-mail: pschulz@criba.edu.ar, AR aut Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer