Pillared Clays and Clay Minerals

Recent advances and prospects of catalytic advanced oxidation process in treating textile effluents

“…Clay minerals are abundant on the surface of the Earth and known as attractive materials that have been widely used as adsorbents, catalysts, and catalyst supports (Vicente et al 2013). They are great adsorbents used for the degradation of contaminants.…”

Adsorption of polyhydroxy fullerene on polyethylenimine-modified montmorillonite

“…5). The sharp diffraction peak attributed to the (001) reflection of Mt indicated a typical Na + form with one water layer in the interlayer space of Mt (He et al, 2006c;Vicente et al, 2013). After treatment with 2%PEI, the modified Mt exhibited the same basal spacing with the raw Mt (~1.24 nm).…”

“…A similar phenomenon was observed by Wang et al (2015) who disclosed that the enhanced hydrogen bonding between PEI and anionic compounds at high pH values could lead to a visible shift on the corresponding FTIR band vibrations. XRD has been regarded as a powerful tool to study the microstructure of clay minerals (He et al, , 2006aVicente et al, 2013;Chen et al, 2016). In the present work, the XRD patterns of the adsorbents before and after the adsorption of PHF were compared (Fig.…”

Influence of interlayer species on the thermal characteristics of montmorillonite

“…On the other hand, the microstructure and composition of Mt layers can be readily altered by thermal treatment, and the thermal characteristics as one of the most fundamental properties of Mt play important roles in its application of Mt (Drits et al, 2012;Heller-Kallai, 2013). So far, previous studies have mainly focused on the thermal stability of the raw Mt (e.g., CaMt) (Wu et al, 2005;Heller-Kallai, 2013) or hydroxymetal modified Mt (Kloprogge et al, 1999;Vicente et al, 2013) and the effect of Mt layers on interlayer species (e.g., the decomposition process of organic compounds) Sun et al, 2013;Keidar et al, 2015). In contrast, less attention has been paid on the thermal behaviors and structure transformation of the modified Mt with various interlayer species (e.g., inorganic and organic cations), especially at relatively high temperatures (e.g., N 800°C).…”