caa a22 4500 606196196 CHVBK 20210128100923.0 cr unu---uuuuu 210128e20150401xx s 000 0 eng 10.1007/s10934-014-9899-z doi (NATIONALLICENCE)springer-10.1007/s10934-014-9899-z Pore ordering in mesoporous matrices induced by different directing agents [Elektronische Daten] [Ana-Maria Putz, Savii Cecilia, Cătălin Ianăşi, Zoltán Dudás, Kinga Székely, Jiri Plocek, Paula Sfârloagă, Liviu Săcărescu, László Almásy] Mesoporous silica particles of MCM-41 type were synthesized by sol-gel method from tetraethyl orthosilicate in 2-methoxyethanol and deionized water mixture in base conditions at room temperature. Ammonia or sodium hydroxides were used as catalysts and cetyl-trimethylammonium bromide and n-dodecyl-trimethylammonium bromide as structure directing agents. The porosities and the ordered structure have been analyzed using transmission and scanning electron microscopy, small angle neutron and X-ray diffraction, nitrogen adsorption, thermal analysis and FTIR spectroscopy. The samples consist of spherical particles of sub-micrometer size, with radially arranged pores. The comparison of the effect of the different surfactants and catalysts shows that by varying the surfactant type and their proportion, the pore sizes can be controlled. As compared to the commonly used ammonia catalyst, the use of NaOH as catalyst results in a much smaller porosity of the as-prepared materials. These materials are not resisting to the heat treatment at 700°C used for the template removal, and the ordered porous structure is completely lost. Springer Science+Business Media New York, 2014 Mesoporous silica nationallicence MCM-41 nationallicence Hexadecyl-trimethylammonium bromide nationallicence Dodecyl-trimethyl ammonium bromide nationallicence Putz Ana-Maria Laboratory of Inorganic Chemistry, Institute of Chemistry Timisoara of Romanian Academy, Bv. Mihai Viteazul, No. 24, 300223, Timisoara, Romania aut Cecilia Savii Laboratory of Inorganic Chemistry, Institute of Chemistry Timisoara of Romanian Academy, Bv. Mihai Viteazul, No. 24, 300223, Timisoara, Romania aut Ianăşi Cătălin Laboratory of Inorganic Chemistry, Institute of Chemistry Timisoara of Romanian Academy, Bv. Mihai Viteazul, No. 24, 300223, Timisoara, Romania aut Dudás Zoltán Laboratory of Inorganic Chemistry, Institute of Chemistry Timisoara of Romanian Academy, Bv. Mihai Viteazul, No. 24, 300223, Timisoara, Romania aut Székely Kinga Wigner Research Centre for Physics, Institute for Solid State Physics and Optics, Hungarian Academy of Sciences, POB 49, 1525, Budapest, Hungary aut Plocek Jiri Institute of Inorganic Chemistry, Academy of Sciences of the Czech Republic, Husinec-Řež 1001, 25068, Řež, Czech Republic aut Sfârloagă Paula R&D National Institute for Electrochemistry and Condensed Matter, P. Andronescu Street, No. 1, 300224, Timisoara, Romania aut Săcărescu Liviu Institutului de Chimie Macromoleculară "Petru Poni”, Iaşi, Romania aut Almásy László Wigner Research Centre for Physics, Institute for Solid State Physics and Optics, Hungarian Academy of Sciences, POB 49, 1525, Budapest, Hungary aut Journal of Porous Materials Springer US; http://www.springer-ny.com 22/2(2015-04-01), 321-331 1380-2224 22:2<321 2015 22 10934 https://doi.org/10.1007/s10934-014-9899-z text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10934-014-9899-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Putz Ana-Maria Laboratory of Inorganic Chemistry, Institute of Chemistry Timisoara of Romanian Academy, Bv. Mihai Viteazul, No. 24, 300223, Timisoara, Romania aut NATIONALLICENCE 700 1- Cecilia Savii Laboratory of Inorganic Chemistry, Institute of Chemistry Timisoara of Romanian Academy, Bv. Mihai Viteazul, No. 24, 300223, Timisoara, Romania aut NATIONALLICENCE 700 1- Ianăşi Cătălin Laboratory of Inorganic Chemistry, Institute of Chemistry Timisoara of Romanian Academy, Bv. Mihai Viteazul, No. 24, 300223, Timisoara, Romania aut NATIONALLICENCE 700 1- Dudás Zoltán Laboratory of Inorganic Chemistry, Institute of Chemistry Timisoara of Romanian Academy, Bv. Mihai Viteazul, No. 24, 300223, Timisoara, Romania aut NATIONALLICENCE 700 1- Székely Kinga Wigner Research Centre for Physics, Institute for Solid State Physics and Optics, Hungarian Academy of Sciences, POB 49, 1525, Budapest, Hungary aut NATIONALLICENCE 700 1- Plocek Jiri Institute of Inorganic Chemistry, Academy of Sciences of the Czech Republic, Husinec-Řež 1001, 25068, Řež, Czech Republic aut NATIONALLICENCE 700 1- Sfârloagă Paula R&D National Institute for Electrochemistry and Condensed Matter, P. Andronescu Street, No. 1, 300224, Timisoara, Romania aut NATIONALLICENCE 700 1- Săcărescu Liviu Institutului de Chimie Macromoleculară "Petru Poni”, Iaşi, Romania aut NATIONALLICENCE 700 1- Almásy László Wigner Research Centre for Physics, Institute for Solid State Physics and Optics, Hungarian Academy of Sciences, POB 49, 1525, Budapest, Hungary aut NATIONALLICENCE 773 0- Journal of Porous Materials Springer US; http://www.springer-ny.com 22/2(2015-04-01), 321-331 1380-2224 22:2<321 2015 22 10934