No abstract

The synthesis of zeolite ANA under static hydrothermal conditions was performed accompanied by an additional static and ultrasonic‐assisted aging of the reaction mixture prior to crystallization. The aging process was compared with stirring‐assisted aging, microwave‐assisted aging and syntheses without any aging. The influence of aging time on the crystallization time of zeolite ANA was investigated. The static and ultrasonic‐assisted aging can shorten the crystallization time of the ANA phase. Moreover, ultrasonic‐assisted aging leads to altered morphologies of the particles. The products were characterized by X‐ray diffraction (XRD) and scanning electron microscopy (SEM).

Early years, bio-nano-composites materials are interesting in advanced engineering applications fields. In order to, biological properties of the 10Ce-TZP/Al 2 O 3 nanocomposite was evaluated by the addition of HA nanopowder for medical applications. In this research, a bio-nano-composite consisting of CeO2-stabilized zirconia (Ce-TZP), Al 2 O 3 and Hydroxyapatite (HA) powders proposed to use for medical application .The first step, nano-powders of Ce-TZP and Al 2 O 3 , were blended by fast milling machine. Then, nano-powder of HA was added to the alumina-zirconia (ZA) mixture from 10 to 40 vol%, and homogenized again. In final step, mixed powder was cold pressed and sintered at1600 °C for 120 min. Crystal phase of the sintered samples were characterized by X-ray diffraction(XRD),the density and bending strength were measured and cellular response test was performed with osteoblastic cell-lines by MG63 cell-lines and the morphology of the proliferated cells was observed with FESEM too. From the strength and cellular response evaluations of samples ,specimens with 30 vol% HA showed the best result, also XRD patterns confirmed this results .

Studies on the effects of iron and nickel incorporation into the hydrothermal synthesis of ANA zeolite were carried out. The presented work reveals that pure Fe-Al analcime is synthesized by using starting composition with a higher iron(III) content than reported in previous publications. Furthermore, the iron(III) and nickel(II) contents play important roles in the framework of the synthesized zeolite. 759XRD, FT-IR spectroscopy, diffuse reflectance UV/Vis spectroscopy, nitrogen adsorption and SEM were used to characterize the synthesized zeolites. These investigations showed that loading of iron and nickel ions in ANA zeolite changes the pore size and morphology of analcime zeolite.

The hydrothermal synthesis of analcime (ANA) with N,N′‐dibenzyl‐N,N,N′,N′‐tetramethylethylenediamine (DBTMED) as template was systematically studied. The various parameters that affect the crystallization of analcime, such as temperature, time, Al source, and Si/Al ratio were investigated. Systematic variations of these parameters revealed that ANA was obtained from the reaction mixture with the optimized ratios of SiO2/Al2O3 = 5–9.5 in presence of DBTMED, whereas template‐free clear solution methods require SiO2/Al2O3 ratio of greater than 25. When experiments were conducted at 130 and 150 °C for 4 days, a mixture of analcime and zeolite P was present in the samples, and a pure analcime sample could be obtained with heating in the temperature range 160–180 °C. When microwave and conventional heating were used, analcime could be obtained after 2 days. The obtained products were characterized by XRD, SEM, and IR spectroscopy.