2-Ethyl-1,3,4-trimethylimidazolium is so far the fifth and largest imidazolium cation able to produce the pure silica zeolite ITW. The crystallization is not direct, but occurs as an in situ transformation from either the chiral HPM-1 (STW) zeolite or the new layered zeolite precursor HPM-2 (preMTF) and results in large interpenetrated crystals with a habit so far unseen in this zeolite. The re...

Wastewater treatment of some heavy metals was carried out by synthetic zeolite P1, which was prepared by alkaline hydrothermal treatment of the pumice. Both of the pumice raw materials and synthetic zeolite were investigated for their chemical phase composition, physical properties, and microstructure. The adsorption behavior of Na-zeolite P1 with respect to Co(+2), Cu(+2), Fe(+2), and Cd(+2) h...

The preparation of polyaniline/zeolite nanocomposite coating on 304 stainless steel (304 SS) surface has studied via the galvanostatic method. The electro-generated coating was characterized by Fourier transform infrared spectroscopy (FT-IR), UV-visible absorption spectroscopy, X-ray diffraction (XRD) patterns and scanning electron microscopy (SEM). The anticorrosion property of polyaniline/zeo...

volatile organic compounds (vocs) are in categories of mankind and environmentally harmful materials. some of vocs are also carcinogenic and mutagen. because of expanded application of these compounds as various domestic and industrial usages, prevention of environmental contamination of these compounds is a substantial issue.  in this study, the effect of zero-valent iron nanoparticles applica...

1. What are toxins? p3 2. What are the most common sources of toxins? p4 3. Is it true that even food is a common source of dangerous toxins? p5 4. Why are toxins a threat to my health? p5 5. Are children more susceptible to dangerous toxins than adults? p6 6. How do prescription drugs and other medical treatments contribute to toxic overload? p6 7. What is toxic overload and what are its sympt...

15 The UASB process for wastewater treatment has been extensively studied, but the use of zeolite to improve 16 UASB reactor performance has rarely been explored. In this study, a UASB reactor modified with natural 17 zeolite operating at high nitrogen concentrations (0.5 g/L, 0.7 g/L and 1 g/L) was evaluated. Two laboratory 18 bioreactors, one with zeolite and one without, were operated at amb...

An alumino-silicate zeolite, Linde Type-A (LTA) has been prepared from aluminium powder and sodium metasilicate by hydrothermal process. The zeolite was characterized by FTIR and X-ray diffraction (XRD) analysis and by measuring the surface acidity using KOH as adsorbate. The surface acidity of LTA zeolite varied greatly with varying synthesized conditions such as crystallization temperature, c...

Since the discovery of zeolites there has been a consistent interest in the potential applications of these microporous structures. Of current particular interest is the possible use of zeolites as storage devices for fuel cells in the hydrogen economy. The adsorption kinetics of zeolites are not fully understood, and therefore the potential of such materials has not been optimized. In this stu...

Using the chemical reduction method, silver nanoparticles (Ag NPs) were effectively synthesized into the zeolite framework in the absence of any heat treatment. Zeolite, silver nitrate, and sodium borohydride were used as an inorganic solid support, a silver precursor, and a chemical reduction agent, respectively. Silver ions were introduced into the porous zeolite lattice by an ion-exchange pa...