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Journal of Thermal Analysis and Calorimetry
Authors: S. Ľalíková, M. Pajtášová, M. Chromčíková, M. Liška, V. Šutinská, M. Olšovský, D. Ondrušová, and S. C. Mojumdar

solids were washed repeatedly with deionized water until a negative AgNO 3 test was obtained [ 28 – 30 ]. The cation exchange capacities (CEC) are follows: Ca-MMT (79 meq/100 g), Co-MMT (83 meq/100 g), Cu-MMT (98 meq/100 g

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Thermal analysis of hexadecyltrimethylammonium-montmorillonites

Part 2. Thermo-XRD-spectroscopy-analysis

Journal of Thermal Analysis and Calorimetry
Authors: Isaak Lapides, Mikhail Borisover, and Shmuel Yariv

prepared by loading MONT with 41 and 90 percent of its cation exchange capacity (CEC) with HDTMA and were labeled OC-41 and OC-90, respectively [ 6 , 7 ]. The unloaded Na-MONT and each organoclay sample were heated 2 h in ambient atmosphere at 150, 250

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Journal of Thermal Analysis and Calorimetry
Authors: M. A. García del Cid, M. G. Prolongo, C. Salom, C. Arribas, M. Sánchez-Cabezudo, and R. M. Masegosa

B) and Cloisite 93A (C93A) were supplied by Southern Clay Products, Inc. (Gonzales, TX). Their characteristics: alkylammonium ion, cation exchange capacity (CEC) and interlayer spacing ( d 001 ) are given in Table 1 . The moisture content of the

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Journal of Thermal Analysis and Calorimetry
Authors: A. V. Ursu, G. Jinescu, F. Gros, I. D. Nistor, N. D. Miron, G. Lisa, M. Silion, G. Djelveh, and A. Azzouz

remain to be thoroughly elucidated. In addition, thermal acid activation have a great importance upon some key-properties of bentonites such as crystallinity, chemical composition, cation exchange capacity, adsorption capacity and selectivity

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. , C OSTA , F. & H ERNÁNDEZ , M. T. , 1988 . Cation exchange capacity as a parameter for measuring the humification degree of manures . Soil Science . 146 . 311 – 316 . R

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believed to play important roles in environmental processes, mainly transporting pollutants in air, water, soil and/or sediments. These natural materials possess layered structures, large surface areas and high cation exchange capacity (CEC). Clay minerals

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Journal of Thermal Analysis and Calorimetry
Authors: Xue-Gang Chen, Shuang-Shuang Lv, Ping-Ping Zhang, Lu Zhang, and Ying Ye

are more intense than that of BRHA, indicating that WRHA exhibit more polar groups on the surface. The presence of polar groups on the surface of RHA will extend the cation exchange capacity of adsorbent [ 37 ]. Fig. 3

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-IR-spectroscopy analysis of the samples was previously described [ 10 ]. Experimental Materials Wyoming bentonite (Na-montmorillonite rich clay [ 23 ]) with cation exchange capacity (CEC) of 90.7 meq/100 g was obtained from

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Journal of Thermal Analysis and Calorimetry
Authors: D. Sternik, M. Majdan, A. Deryło-Marczewska, G. Żukociński, A. Gładysz-Płaska, V. M. Gun'ko, and S. V. Mikhalovsky

exchange capacity CEC = 0.79 mmol/g (Sigma-Aldrich)] were used as the initial materials. Basic Red 1, BR1, Rhodamine 6G (Sigma-Aldrich, C.I. = 45160, C 28 H 31 N 2 O 3 Cl, FW = 479.01] used is a cationic dye. Modification

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washed and dried at room temperature. Since the ammonia ions occupy all cationic positions in the clinoptilolite channels by this treating a mono-ionic form was prepared [ 7 ]. It was shown that the total cation exchange capacity (CEC) with respect to Al

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