modified zeolite magnetic

Natural zeolite (clinoptilolite) has been magnetically modified through maghemite (γ-Fe 2 O 3) nano-particles by precipitation route at various reaction conditions. An effect of the precipitation tempera-ture, the weight ratio of Fe/zeolite and the interaction time on the magnetic and surface properties of Compositions and methods for preparing a catalyst composition containing mesoporous materials are described herein. In particular, various embodiments described herein relate to the preparation of catalytic compositions containing a mesoporous zeolite and one or more catalytic nanoparticles dispersed therein. In various embodiments described herein, such catalyst compositions can be used

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Rapid Adsorption of Crystal Violet onto Magnetic Zeolite

This work reports the adsorption of crystal violet (CV) dye onto magnetic zeolite (MZ) nanoparticles, synthesized by direct fusion of fly ash (FA) and magnetite particles. The synthesised MZ showed high capacity for CV dye adsorption, removing 95% of the dye at an equilibrium adsorption time of 10 min and 25℃. The effects of adsorbent dosage, dye concentration, and pH, on adsorption were

To assess the effect of temperature, zeolite-magnetit composite wassynthesized ata variation ofroom temperature, 50 C and 85 C at pH 9. Furthermore, to assess the effect of pH, natural zeolit was magnetic modified at pH variations of 10, 11 and 12 of a temperature.

1 Supporting Information Decomposition of CO2 to Carbon and Oxygen under Mild Conditions over a Zinc-modified Zeolite Jing-Feng Wang,a Kai-Xue Wang,*a Jian-Qiang Wang,b Lu Li,a and Jie-Sheng Chen*a a School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China b Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics,

A simple route for decorating the external surfaces of zeolites with maghemite nanoparticles is described. The synthesis comprises feeding of a zeolite support with different amounts of iron(III) by employing melt exchange re- actions, exposure of the iron-containing solids to vapors of formic acid and finally calcination of the resulting deriv- atives in air to afford maghemite

This work reports the adsorption of crystal violet (CV) dye onto magnetic zeolite (MZ) nanoparticles, synthesized by direct fusion of fly ash (FA) and magnetite particles. The synthesised MZ showed high capacity for CV dye adsorption, removing 95% of the dye at an equilibrium adsorption time of 10 min and 25℃. The effects of adsorbent dosage, dye concentration, and pH, on adsorption were

Photocatalytic performance of Ag

For preparation of Ag+-modified zeolite (Z-Ag), Na form of zeolite was added to a volume of 0.03 M Ag+ solution (as nitrate salt) corresponding to a solid/liquid ratio of 1/100. The ion exchange process has been conducted under magnetic stirring, at room temperature, for 8 h.

28.02.2019Zeolites HY and 13X were modified by magnetic nanoparticles and were denoted as MHY and M13X, respectively. MHY and M13X were characterized by vibrating-sample magnetometry, X-ray diffraction analysis, scanning electron microscopy, energy-dispersive X-ray spectroscopy, transmission electron microscopy, Fourier transform infrared spectroscopy, zeta potential, and

15.12.2012In this work, a hexadecyltrimethyl ammonium (HDTMA) surfactant-modified synthetic zeolite was investigated for its efficiency in removing BTEX from aqueous solutions. Three surfactant-modified zeolites were synthesized, with amounts of surfactant corresponding to 50%, , and 200% of the total cation-exchange capacity (CEC) of the synthetic

Characterization of zeolite. English. English Espaol Portugus Franais Italiano Svenska Deutsch. Home page Questions and answers Statistics Advertise with us Contact. Fourier Transform Infrared Power Plants Nuclear Magnetic Resonance, Biomolecular Magnetic Resonance Spectroscopy Models,

Despite its hypertoxicity, the enrichment and analysis of trace DA in complex marine organisms remains a challenge. We describe herein the fabrication of a postsynthetic-modified magnetic zeolite imidazolate framework-8 (Fe₃O₄ SPsZIF-8/Zn⁺), based on Fe₃O₄ superparticles, for the adsorption of DA from complex biological matrices.

H-Y zeolite modified by a radio-frequency CF 4 plasma has been characterized using X-ray diffraction, nitrogen adsorption, magic angle spinning nuclear magnetic resonance, ethanol adsorption, energy dispersive X-ray and infrared absorption techniques. The ethanol adsorption measurements indicated that the hydrophobic character of the zeolite was enhanced by the plasma treatment.

This work reports the adsorption of crystal violet (CV) dye onto magnetic zeolite (MZ) nanoparticles, synthesized by direct fusion of fly ash (FA) and magnetite particles. The synthesised MZ showed high capacity for CV dye adsorption, removing 95% of the dye at an equilibrium adsorption time of 10 min and 25℃. The effects of adsorbent dosage, dye concentration, and pH, on adsorption were

Adsorption with cheap sorbents such as Zeolite is the best way for removal of this pollutant. So this study aimed to apply modified Clinoptilolite Zeolite for nitrate removal. Materials Methods: Firstly، Clinoptilolite zeolite was screened by 1-2 mm sieves for monolithic of it. Then zeolite was boiled in HCL 20% for 3 hours for removal of

Characterization of zeolite. Medical search. FAQ

Characterization of zeolite. English. English Espaol Portugus Franais Italiano Svenska Deutsch. Home page Questions and answers Statistics Advertise with us Contact. Fourier Transform Infrared Power Plants Nuclear Magnetic Resonance, Biomolecular Magnetic Resonance Spectroscopy Models,

The iron nanoparticles were loaded on the zeolite surface by homogeneous nucleation. Adsorption kinetic models of pseudo first and second order were surveyed. The characterization of pristine and modified zeolite was performed by Fourier transform infrared (FTIR), transmission electron microscopy (TEM), and X-ray diffraction (XRD).

Natural zeolite (clinoptilolite) has been magnetically modified through maghemite (γ-Fe 2 O 3) nano-particles by precipitation route at various reaction conditions. An effect of the precipitation tempera-ture, the weight ratio of Fe/zeolite and the interaction time on the magnetic and surface properties of

Zeolite synthesized from cyclone ash (ZCA) was modified with various loadings of hexadecyltrimethylammonium bromide (HDTMA-Br) and was used as adsorbent to remove Reactive Orange 16 (RO16), an azo reactive dye, from aqueous solution. The RO16 adsorption efficiencies for ZCA and surfactant-modified zeolites from cyclone ash (SMZCAs) were compared.

2.3. Magnetic zeolite NaA modifications . The adsorption capacity of unmodified magnetic zeolite NaA are low for Safranin dye, but when magnetic zeolite A was modified with SDS, the adsorption capacity was increased remarkably. In this study, SDS was used at concentrations. lower than its criti. cal micelle concentration [31]. In the

The activity test of the Ni2+-Zeolite beta catalyst was carried out by add 7.5 g (44.3 mmol) 1,8-cineole, 14 mL (148.2 mmol) acetic anhydride and (1) 1 g beta H-zeolite, (2) 1 g of Ni2+-zeolite beta in a three-neck flask which was equipped with a cooling back, thermometer, magnetic stirrer, and nitrogen gas as atmosphere reaction.

Using x-ray phase analysis, IR and /sup 11/B NMR spectroscopy, the authors have studied the structure of pentasil type zeolites modified by boron and phosphorus compounds. They show that the modifier is chemically bonded to the zeolite, but does not displace the tetrahedrally coordinated atoms of

H-Y zeolite modified by a radio-frequency CF 4 plasma has been characterized using X-ray diffraction, nitrogen adsorption, magic angle spinning nuclear magnetic resonance, ethanol adsorption, energy dispersive X-ray and infrared absorption techniques. The ethanol adsorption measurements indicated that the hydrophobic character of the zeolite was enhanced by the plasma treatment.

To assess the effect of temperature, zeolite-magnetit composite wassynthesized ata variation ofroom temperature, 50 C and 85 C at pH 9. Furthermore, to assess the effect of pH, natural zeolit was magnetic modified at pH variations of 10, 11 and 12 of a temperature.

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