caa a22 4500 467927030 CHVBK 20180406152932.0 cr unu---uuuuu 170328e20060401xx s 000 0 eng 10.1134/S0020168506040054 doi (NATIONALLICENCE)springer-10.1134/S0020168506040054 Template-directed synthesis of mesoporous silicas containing phosphonic acid derivatives in the surface layer [Elektronische Daten] [O. Dudarko, I. Mel'nyk, Yu. Zub, A. Chuiko, A. Dabrowski] A template-directed process, using 1-dodecylamine as a template, is developed for the synthesis of mesoporous silicas containing the phosphonic acid derivatives ≡Si(CH2)2P(O)(OC2H5)2 and ≡Si(CH2)3P(O)(CH3)(ONa) in the surface layer. The porous materials obtained by removing the template with boiling methanol have specific surfaces of 854 and 505 m2/g, accessible pore volumes of 0.42 and 0.37 cm3/g, and pore diameters of 2.2 and 2.5 nm, respectively. As shown by scanning electron microscopy and x-ray diffraction, the mesoporous silicas are nonuniform in particle shape and size, and their structure is less ordered than that of classic mesoporous silicas, such as MCM-41. IR and 13C, 31P, and 29Si CP/MAS NMR spectroscopy data indicate that, in the surface layer of the mesoporous silica prepared with the use of ≡Si(CH2)2P(O)(OC2H5)2, the functional groups are present in the form of T 2 and T 3 structural units. In addition, the surface layer contains alkoxy groups and water, which participates in hydrogen bonding. Pleiades Publishing, Inc., 2006 Dudarko O. Institute of Surface Chemistry, National Academy of Sciences of Ukraine, ul. Generala Naumova 17, 03164, Kiev, Ukraine aut Mel'nyk I. Institute of Surface Chemistry, National Academy of Sciences of Ukraine, ul. Generala Naumova 17, 03164, Kiev, Ukraine aut Zub Yu Institute of Surface Chemistry, National Academy of Sciences of Ukraine, ul. Generala Naumova 17, 03164, Kiev, Ukraine aut Chuiko A. Institute of Surface Chemistry, National Academy of Sciences of Ukraine, ul. Generala Naumova 17, 03164, Kiev, Ukraine aut Dabrowski A. Chemistry Faculty, Maria Curie-Sklodowska University, pl. M. Curie-Sklodowskiej 2, 20-031, Lublin, Poland aut Inorganic Materials Nauka/Interperiodica 42/4(2006-04-01), 360-367 0020-1685 42:4<360 2006 42 10789 https://doi.org/10.1134/S0020168506040054 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S0020168506040054 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Dudarko O. Institute of Surface Chemistry, National Academy of Sciences of Ukraine, ul. Generala Naumova 17, 03164, Kiev, Ukraine aut NATIONALLICENCE 700 1- Mel'nyk I. Institute of Surface Chemistry, National Academy of Sciences of Ukraine, ul. Generala Naumova 17, 03164, Kiev, Ukraine aut NATIONALLICENCE 700 1- Zub Yu Institute of Surface Chemistry, National Academy of Sciences of Ukraine, ul. Generala Naumova 17, 03164, Kiev, Ukraine aut NATIONALLICENCE 700 1- Chuiko A. Institute of Surface Chemistry, National Academy of Sciences of Ukraine, ul. Generala Naumova 17, 03164, Kiev, Ukraine aut NATIONALLICENCE 700 1- Dabrowski A. Chemistry Faculty, Maria Curie-Sklodowska University, pl. M. Curie-Sklodowskiej 2, 20-031, Lublin, Poland aut NATIONALLICENCE 773 0- Inorganic Materials Nauka/Interperiodica 42/4(2006-04-01), 360-367 0020-1685 42:4<360 2006 42 10789 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer