The effect of microwave irradiation and conventional acid activation on the textural properties of smectite: Comparative study

Kaolinite stabilized paraffin composite phase change materials for thermal energy storage

“…It had a thermal conductivity of 0.25 W·m − 1 ·K − 1 , a melting temperature of 51.5°C, and a latent heat of melting of 219.1 J·g −1 . In order to homogenize the surfaces of the different kaolinites, the three kinds of kaolinites were pretreated with hydrochloric acid (Analytical reagent, obtained from Zhuzhou Research Institute of Chemical Industry, Hunan, China) under microwave irradiation (Korichi et al, 2009(Korichi et al, , 2012: 100 g kaolinite was added to 150 g HCl solution (8 wt.%); the mixture was then microwave irradiated at 700 W for 5 min, washed with distilled water several times to remove Cl − , and dried at 105°C. The kaolinite/paraffin composites were prepared via vacuum coating ( Fig.…”

Microwave-assisted synthesis, characterization and antibacterial activity of Ag/ZnO nanoparticles supported bentonite clay

“…Therefore, any new synthesis technique that helps to save time, control particle size and provide uniform dispersion of nanoparticles would be extremely beneficial [34]. Recently, microwave-assisted method has been applied in the activation of clays and synthesis of nanomaterials [35][36]. Research has shown the method to be an attractive choice to promote reactions and is energy effective in heating compared to conventional heat conduction methods (such as an oil bath) due to the direct heating of the reaction mixture [34,…”

Green synthesis of Cyclic imides by Amidation and Cyclisation using Bronsted-Lewis acidic montmorillonite clays

“…The Cation exchange capacity (CEC) is the amounts of interlayer charge compensating cation are exchangeable with other metal ions, CEC of the unmodified clay is 0.93 meq/g with a surface area 34 m 2 /g. These clays are acidic catalysts and are having both Brønsted and Lewis acidity, the former originating from crystal edges of Al and Fe species and later case due to the dissociation of water molecules from the polarizing interlayer cations ,…”