Dispersion of Active Au Nanoparticles on Mesoporous SBA-15 Materials
نویسندگان
چکیده
منابع مشابه
Preparation and Catalytic Properties of Ti-SBA-15 Mesoporous Materials
Ti-SBA-15 mesoporous materials were directly synthesized via a hydrothermal process and characterized by using nitrogen adsorption-desorption measurements, X-ray diffraction, scanning electron microscopy, transmission electron microscopy, diffuse reflectance ultraviolet-visible spectroscopy, and infrared ray spectroscopy. The effect of synthesis temperatures on the structure and catalytic effic...
متن کاملFormation of titanium nitride nanoparticles within mesoporous silica SBA-15.
We report the first synthesis of titanium nitride (TiN) nanoparticles inside the nanoscale channels of mesoporous silica SBA-15. The TiN precursor, Ti(NMe(2))(4) in toluene, was incorporated into the methyl group-modified channels of the SBA-15 powder. The functionalization of pore surfaces with methyl groups generates hydrophobic surfaces that facilitate impregnation with Ti(NMe(2))(4) and min...
متن کاملTh(IV)/U(VI) Sorption on Modified SBA–15 Mesoporous Materials in Fixed–Bed Column
The sorption of thorium and uranium ions by functionalized SBA–15 mesoporous silica materials with Schiff base ligating groups N–propylsalicylaldimine (SBA/SA) and ethylenediaminepropylesalicylaldimine (SBA/EnSA) from aqueous solution was investigated in fixed-bed column method. The TEMPeffect of pH, sample solution volume, and the column design parameters such as sample and eluent flow rat...
متن کاملTransport Properties of Guest Molecules in Mesoporous SBA-15 Materials - A PFG NMR Study
1. Introduction Catalysts are among the most important materials in modern industry. Hundreds of millions of tonnes of catalysts per year are produced in order to convert " raw " materials into value-added products. Continuously new catalysts with improved chemical and optimized transport properties are developed. At the present time there is an increasing interest in SBA-15 type materials due ...
متن کاملSelective Preparation of trans-Carveol over Ceria Supported Mesoporous Materials MCM-41 and SBA-15
Ce-modified mesoporous silica materials MCM-41 and SBA-15, namely 32 wt % Ce-Si-MCM-41, 16 wt % Ce-H-MCM-41 and 20 wt % Ce-Si-SBA-15, were prepared, characterized and studied in the selective preparation of trans-carveol by α-pinene oxide isomerization. The characterizations of these catalysts were performed using scanning electron microscopy, X-ray photoelectron spectroscopy, nitrogen adsorpti...
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ژورنال
عنوان ژورنال: Chinese Journal of Chemical Engineering
سال: 2007
ISSN: 1004-9541
DOI: 10.1016/s1004-9541(07)60116-5