Zirconium and sulfated zirconium pillared clays: a combined intercalation solution study and solid characterization

Chaabene, Semy Ben; Bergaoui, Latifa; Ghorbel, A.

doi:10.1016/j.colsurfa.2004.09.011

Cited by 15 publications

(10 citation statements)

References 22 publications

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“…The entry of zirconium ions in the interlayer position of montmorillonite could be followed by the change of absorbance in the UV region of the DRS spectra or intensity of XRD. According to Vance [15] the intercalation concentration would be equivalent to the peak produced by DRS or XRD [11]. In Fig.…”

Section: Resultsmentioning

confidence: 99%

“…Furthermore, Utubira [9] has synthesized zirconia-pillared bentonite using ZOC product of E Merck, but Bahranowski [10] synthesized [Ti, Zr] -pillared montmorillonite used products from Fluka Switzerland. Another study conducted by Suseno [11] has also synthesized Zirconia pillared bentonite using ZOC Merck-product, while Chaabene [12] used Sigma-Aldrich Chemistry products. In this work, we used ZOC local product of PSTA synthesized from the zircon sand of Kalimantan.…”

Section: Introductionmentioning

confidence: 99%

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Characterization of ZrO<sub>2</sub>-Montmorilonite Pillarization Process from Local Zirconium Oxychloride Local Made PSTA-BATAN

Muzakky

Poernomo

2018

Indones. J. Chem.

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Characterization of the pillarization process product of ZrO2-montmorillonite from Zirconium oxychloride local made of PSTA-BATAN has been done. The objective of this research is to control the quality of pillarization process product of the new material ZrO2-montmorilonite. This new material was produced from local made Zirconium oxychloride (ZOC) of PSTA-BATAN by dry process and bentonite (Na-montmorillonite) imported from Thailand by the pillarization process. During optimization the pillarization quality control would be followed by absorbance using Diffuse Reflectance Ultraviolet-Visible (UV-Vis DRS) spectroscopy and X-Ray Diffraction (XRD). While the type of functional group can be detected by Fourier Transform Infrared (FTIR) spectrophotometry, and the surface image was observed by using Transmission Electron Microscopy (TEM) and BET methods. The result gained showed that the optimum quality of ZrO2-montmorillonite was at Zr concentration of 0.2 M with the absorbance of 1.04 au by XRD and DRS. The best precursor used was ethylene glycol with a drying process in the cold conditions at the absorbance of 1.2 au. The best calcination process was at the temperature of 600 °C with the reached absorbance value of 1.3 au. The results of TEM image observation after calcination at the temperature of 600 °C were clearer and more porous than before and showed specific surface area of 105 m2/g. The interpretation results of FTIR spectra on the new material of ZrO2-montmorillonite contained the cluster of ΞSi-OH, ΞAl-OH and Si-O functional groups indicating pillar groups.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Characterization of ZrO<sub>2</sub>-Montmorilonite Pillarization Process from Local Zirconium Oxychloride Local Made PSTA-BATAN

Muzakky

Poernomo

2018

Indones. J. Chem.

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“…This solution was aged for 24 h. The montmorillonites were intercalated by slow addition of corresponding amounts of pillaring solution to the suspension of NaSWy-2 montmorillonite under stirring in order to obtain 10 mmol of Al/g clay. The Zr-pillared clays, Zr-PILCs, were prepared using a freshly prepared 0.1 M ZrOCl 2 .8H 2 O as the pillaring solution (Yamanaka and Brindley, 1979;Bartley and Burch, 1985;Chaabene et al, 2004). The intercalated Zr-montmorillonite was prepared by slow addition of corresponding amounts of prepared pillaring solution to the Na-SWy-2 suspension, with stirring, in order to obtain 10 mmol of Zr/g of clay.…”

Section: Methodsmentioning

confidence: 99%

The Role of the Nature of Pillars in the Structural and Magnetic Properties of Magnetic Pillared Clays

Bachir

Lan

Mereacre

et al. 2011

Clays and clay miner.

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Pillared clays (PILCs) with magnetic properties have significant potential for application in industry and the environment, but relatively few studies of these types of materials have been carried out. The aim of the present work was to gain insight into the magnetic and structural properties of pillared clays by examining in detail the influence of the calcination temperature and the nature of different pillared clays on these properties.Magnetic layered systems from different pillared clays were prepared and characterized. Firstly, Ti-, Al-, and Zr-pillared clays (Ti-PILCs, Al-PILCs, and Zr-PILCs, respectively) were produced at different calcination temperatures and then magnetic pillared clays (Ti-M-PILCs, Al-M-PILCs, and Zr-M-PILCs) were prepared at ambient temperature. The synthesis involves a reduction in aqueous solution of the original Fe-exchanged pillared clay using NaBH 4 . The structural properties of pillared clays and their magnetic forms were investigated using X-ray diffraction, N 2 adsorption, cation exchange capacity determination, and X-ray fluorescence (XRF) measurements. The properties of the magnetic pillared clays were investigated by superconducting quantum interference devices and Mö ssbauer spectroscopy. An evaluation of the data obtained allowed an estimation of the pillared structure in one PILC-model before and after magnetization. The model was determined on the basis of a simple geometric model and experimental data leading to the calculation of a filling factor (FF) which contained information about the number of intercalated pillared layers and the unaffected layers. In the case of Ti precursors, the best calcination temperature was 400ºC, which maintained the highest specific surface area and pore volume with magnetic parameters suitable for magnetic application. Similar experiments with Al-and Zr-pillars have been discussed. A correlation between the XRF data, porosity, FF calculation, and magnetic properties led to the conclusion that the sample Al-M-PILC previously calcined at 500ºC was the most stable material after the magnetization process. The same examination in the case of Zr materials suggested that the most stable sample had been calcined at 300ºC (sample Zr-M-PILC-300).

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“…The interaction of the second cationic components with the pillars in the microenvironment of the clay is very crucial for the property of the solid. Indeed, it has been shown that pillared clay with different basal spacing and microporosity was prepared with mixed cation pillaring [3][4][5][6][7]. In addition, previous works [7,8] report that the incorporation of species of Ce favors catalytic activity (CWPO reaction) of the pillared clays, probably because the cerium oxide formed in the solids enhances the textural properties of the solid, the dispersion and/or the redox properties of active species [9,10].…”

Section: Introductionmentioning

confidence: 97%

Catalytic wet peroxide oxidation of phenol over Ce-Zr-modified clays: Effect of the pillaring method

Mnasri-Ghnimi

Frini-Srasra

2014

Korean J. Chem. Eng.

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Preparation, characterization and catalytic activity of Zr-and Ce-Zr pillared clays with different method (direct, indirect, and under reflux), starting from Tunisian interstratified illite-smectite bentonite, are described. Zirconium pillared clays (Zr-PILC) revealed weaker thermal stability. To overcome this drawback, the addition of cerium (Ce) as the second metal component to Zr-PILC was attempted. Wet peroxide oxidation of phenol from industrial wastewaters was carried out over these catalysts. The catalysts were very efficient in the phenol oxidation reaction in diluted aqueous medium under mild experimental conditions (298 K and atmospheric pressure). The addition of Ce in the synthesis step of the inorganic polycations yielded a favorable effect on the pillaring of the materials, allowing the increase of the basal spacing and enhancing the catalytic activity of the solids. The pillared clays were characterized by XRD, chemical analysis, CEC, and N 2 adsorption to 77 K. The acidity of the pillared clays was calculated from the adsorbed n-butyl amine.

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Zirconium and sulfated zirconium pillared clays: a combined intercalation solution study and solid characterization

Cited by 15 publications

References 22 publications

Characterization of ZrO<sub>2</sub>-Montmorilonite Pillarization Process from Local Zirconium Oxychloride Local Made PSTA-BATAN

Characterization of ZrO<sub>2</sub>-Montmorilonite Pillarization Process from Local Zirconium Oxychloride Local Made PSTA-BATAN

The Role of the Nature of Pillars in the Structural and Magnetic Properties of Magnetic Pillared Clays

Catalytic wet peroxide oxidation of phenol over Ce-Zr-modified clays: Effect of the pillaring method

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