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 cationexchangecapacities (CEC) are follows: Ca-MMT (79 meq/100 g), Co-MMT (83 meq/100 g), Cu-MMT (98 meq/100 g
Authors:Isaak Lapides, Mikhail Borisover, and Shmuel Yariv
prepared by loading MONT with 41 and 90 percent of its cationexchangecapacity (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
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, cationexchangecapacity (CEC) and interlayer spacing ( d 001 ) are given in Table 1 . The moisture content of the
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, cationexchangecapacity, adsorption capacity and selectivity
Authors:Yanxiang Liu, Xujie Lu, Feng Wu, and Nansheng Deng
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 cationexchangecapacity (CEC). Clay minerals
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 cationexchangecapacity of adsorbent [ 37 ].
Authors:Shmuel Yariv, Isaak Lapides, and Mikhail Borisover
-IR-spectroscopy analysis of the samples was previously described [ 10 ].
Wyoming bentonite (Na-montmorillonite rich clay [ 23 ]) with cationexchangecapacity (CEC) of 90.7 meq/100 g was obtained from
Authors:D. Sternik, M. Majdan, A. Deryło-Marczewska, G. Żukociński, A. Gładysz-Płaska, V. M. Gun'ko, and S. V. Mikhalovsky
exchangecapacity 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.
Authors:V. Petkova, E. Serafimova, N. Petrova, and Y. Pelovski
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 cationexchangecapacity (CEC) with respect to Al