Počet záznamů: 1
Synthesis and Characterization of Nanostructured Sulfated Zirconias
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SYSNO ASEP 0338944 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Synthesis and Characterization of Nanostructured Sulfated Zirconias Tvůrce(i) Lutecki, M. (DE)
Šolcová, Olga (UCHP-M) RID, ORCID, SAI
Werner, S. (DE)
Breitkopf, C. (DE)Zdroj.dok. Journal of Sol-Gel Science and Technology. - : Springer - ISSN 0928-0707
Roč. 53, č. 1 (2010), s. 13-20Poč.str. 8 s. Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova sulfated zirconia ; template assisted synthesis ; porous materials Vědní obor RIV CA - Anorganická chemie CEZ AV0Z40720504 - UCHP-M (2005-2011) UT WOS 000273592700002 DOI 10.1007/s10971-009-2045-8 Anotace Thermally stable sulfated zirconia catalysts were synthesized via a templating procedure and compared with standard zirconia materials prepared by precipitation without templates. Two preparation routes with various amphiphilic systems were employed as structure directing agents: synthesis with hexadecyltrimethyl ammonium bromide, and combined use of surfactant Brij-(A (R)) and triblock-copolymer Pluronic P123(A (R)). The formation of materials was characterized by use of TEM, SEM, X-ray diffraction as well as nitrogen adsorption and mercury intrusion techniques. Different self-assembling properties of the structure directing compounds led to sulfated zirconia materials exhibiting improved morphological and structural properties in terms of thermal stability, specific surface areas, pore diameters and porosity factors. Notably, hierarchical pore structures were obtained for the synthesis route via a combined use of Brij-56(A (R)) and P123(A (R)). Pracoviště Ústav chemických procesů Kontakt Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Rok sběru 2010
Počet záznamů: 1