TECHICAL Series MATHEMATICS  INFORMATICS  PHYSICS Series PHILOLOGY Series ECONOMIC SCIENCES Sereies EDUCATIONAL SCIENCES Series LAW AND SOCIAL SCIENCES Series
Synthesis and Characterization of Super-Acid Supported on MCM-41
(Sinteza si caracterizarea superacidului depus pe MCM-41)
Vol LXII • No. 3A/2010
Viorel Voicu, Jang Chol Ryong, Dragos Ciuparu
Petroleum - Gas University of Ploiesti, Bd. Bucuresti, 39, 100680, Ploiesti, Romania
e-mail: viorel_seth@yahoo.com

 Keywords   silica, impregnation, surfactant, etherification.

 Abstract
Tetra-flouro-ethane sulfonic acid supported on ordered mesoporous material, covalently anchored with acid groups was synthesized. The catalyst supported on MCM-41 was prepared by the pore volume impregnation method using an aqueous solution containing 10 wt% super-acids. The catalyst characterization was performed by physical (X-ray powder diffraction, nitrogen adsorption and desorption isotherms) and chemical (reactivity on the glycerol etherification) methods. A sample was used in the etherification of glycerol with isobutylene and the experimental results are compared with those obtained by using other type of catalyst on the same experimental conditions.

 Rezumat
Acidul tetrafluoretansulfonic depus pe material mezoporos ordonat, ancorat covalent prin grupe acide a fost preparat. Catalizatorul MCM-41 suportat a fost preparat prin metoda impregnarii volumice a porilor, folosind o solutie apoasa ce contine 10gr % super-acid. Caracterizarea catalizatorului a fost realizata folosind metode fizice (Difractie de raze X, Izoterme de adsorbtie-desorbtie cu azot lichid) si chimice (reactivitatea in reactia de eterificare a glicerinei). O proba de catalizator este folosita in reactia de eterificare a glicerinei cu izobutena si rezultatele experimentale sunt comparate cu cele obtinute prin folosirea altor tipuri de catalizatori in aceleasi conditii de reactie.



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