نتایج جستجو برای: alpo4 5
تعداد نتایج: 1215876 فیلتر نتایج به سال:
Herein, we report a rapid route for the synthesis of AlPO4-5. By combining fast heating in a tubular reactor with a seed-assisted method, both of which were found to be crucial, the preparation of AlPO4-5 was completed in one minute, making this route the fastest known for the preparation of the crystalline microporous materials.
In this paper a computational study of the ethane diffusion in AlPO4-5 molecular sieve by classical molecular dynamics techniques is presented. Calculations were performed at different temperatures and loading of ethane molecules per AlPO4-5 unit cell. Static and dynamics AlPO4-5 framework conditions in the calculations were analyzed. According to the results of the simulations the molecular di...
Attempts have been made to load tellurium (Te) atoms into the one-dimensional nano-channels of microporous crystals of aluminophosphate AlPO4-5 and of aluminosilicate mordenites of the Na(+) form (Na-MOR) and the H(+)-form (H-MOR) at 673 K. The density of the atoms adsorbed was in the sequence 0 ∼ AlPO4-5 ≪ H-MOR < Na-MOR. AlPO4-5 provides a shallow potential of periodical charge fluctuation fo...
AlPO4-11 and AlPO4-5 molecular sieves are ionothermally prepared without addition of water by using anhydrous starting materials, such as NH4H2PO4, pseudoboehmite (AlOOH), and NH4F. The synthesis appears to be an autocatalytic process. Water has a remarkable effect on the synthesis process. Addition of reagent quantities of water (H2O/Al = 1, molar ratio) can enhance the crystallization kinetic...
Iodine molecules confined in the elliptical nanochannels of AlPO4-11 crystals can only rotate in the plane passing through the major axis of the elliptical cross-section due to size confinement. This leads to different dynamic behaviors of iodine from those confined in round channels of AlPO4-5 crystals under ambient conditions. In this work, we use high pressure technology to manipulate the na...
In this work, we present Grand Canonical Monte-Carlo simulation results for the adsorption of carbon vapour in the pores of various zeolites: AlPO4-5, silicalite and faujasite (in its siliceous form). The carbon-carbon interactions are described within the frame of a Tight Binding approach (fourth momentum’s method) while the carbon-zeolite interactions are modelled using a PN-TrAZ physisorptio...
The catalytic inactivation of Escherichia coli in water by a cerium (Ce)-promoted silver-loaded aluminum phosphate (Ag/ AlPO4) catalyst using molecular oxygen was investigated. With optimum Ce content, the Ag(Ce)/AlPO4 catalyst exhibited strong bactericidal activity. The process of decomposition of the cell wall and cell membrane was directly observed by TEM. The different morphological changes...
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