Surface Properties of Metal-Incorporated Al-Pillared Interlayered Clay Catalysts Analyzed by Chemisorption and Infrared Analysis

Authors : Funda BASOĞLU, Suna BALCI

Pages : 215-225

View : 15 | Download : 9

Publication Date : 2010-03-26

Article Type : Other Papers

Abstract :Al-pillared interlayered clay insert ignore into journalissuearticles values(Al-PILC); was synthesized using bentonite from the Hançılı region of Central Anatolia in Turkey. Samples of Al-PILC were impregnated with Cu or Ag to produce Cu@Al-PILC and Ag@Al-PILC. Cu/Al-mixed PILCs were also obtained using mixed metal sources having insert ignore into journalissuearticles values(Cu/insert ignore into journalissuearticles values(Cu+Al);); atom percents as 5 and 10. The FTIR intensities of Lewis acidity peaks decreased whereas the intensity of BrÖnsted acidity remained nearly the same for pyridine sorbed PILCs after desorption at 150°C compared to those of pyridine sorbed PILCs at room temperature. These results confirmed the presence of both types of acidities within the matrix. Metal incorporation increased total insert ignore into journalissuearticles values(weak+strong); ammonia adsorption. Metal incorporation increased the total acidities of Al-PILC from 281.1 μmol g-1 to 803-883 μmol g -1 by NH3 sorption at 50°C. The Cu/Al-mixed PILCinsert ignore into journalissuearticles values(AP5); sample resulted 290 μmol g -1 number of active sites at an NH 3 sorption temperature of 200˚C, with the corresponding strong active sites as 44.6 μmol g-1.   Key Words: Pillared interlayered clay, Surface area, FTIR analysis, Ammonia sorption.
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