نتایج جستجو برای: sodalite nanozeolite

تعداد نتایج: 378  

Journal: :iranian journal of catalysis 2015
fatemeh teimouri s. hadi khezri javad azizian

the utilization of hydroxy sodalite (h-sod) as catalyst under solvent-free condition is described for the efficient preparation of tetrahydrobenzo[b]pyrans. these compounds are synthesized by three-component reactions of aldehydes, alkylnitriles and dimedone. h-sod that is the waste-product of zeolite manufacturing process is used as an efficient and a very inexpensive catalyst. furthermore, it...

Journal: :Journal of the American Chemical Society 2004
Elisa Barea Jorge A R Navarro Juan M Salas Norberto Masciocchi Simona Galli Angelo Sironi

A flexible sodalite-type metal organic framework [Cu(pyrimidine-2-olate)2]n (1R) is obtained in a self-assembly process involving Cu2+ ions and pyrimidine-2-olate ligands. 1R suffers a series of sequential and reversible structural changes upon solid-liquid sorption processes of metal nitrates. The 1C-to-1O transformation occurs only with large cations.

Journal: :Chemical communications 2012
Witold M Bloch Christopher J Sumby

A silver(I) 3-D porous coordination polymer (PCP, 1) with a sodalite topology undergoes a remarkable reversible crystal-to-crystal expansion and contraction upon exposure to different solvents. Notably, complete desolvation of 1 also facilitates a transformation to a non-porous 2-D coordination polymer (2).

Journal: :international journal of nano dimension 0
f. narimani school of geology, college of science, university of tehran, tehran, iran. m. kharamesh school of geology, college of science, university of tehran, tehran, iran.

zeolites due to their structures can be used as molecular sieves for purification of materials and solutions. zeolites with phi and sod structure are so common and applicable for this purpose. hydroxy sodalite and phillipsite are the more abundant members of zeolites which display good selectivity for very small molecules and some ions such as sr, pb, zn, cu and rb. there is not any pure natura...

F. Narimani, M. Kharamesh

Zeolites due to their structures can be used as molecular sieves for purification of materials and solutions. Zeolites with PHI and SOD structure are so common and applicable for this purpose. Hydroxy sodalite and phillipsite are the more abundant members of zeolites which display good selectivity for very small molecules and some ions such as Sr, Pb, Zn, Cu and Rb. There is not any pure natura...

Journal: :IOP Conference Series: Materials Science and Engineering 2013

Journal: :Transactions of Tianjin University 2022

Abstract Catalytic/initiated cracking of endothermic hydrocarbon fuels is an effective technology for cooling a hypersonic aircraft with high Mach number (over 5). Catalysts and initiators can promote fuel at low temperatures, increase conversion the heat sink capacity, suppress coke deposition, thereby reducing waste heat. mainly include metal oxide catalysts, noble catalysts nanoparticles, ze...

Journal: :Journal of the Ceramic Society of Japan 1995

In this work, perlite was used as a low-cost source of Si and Al in the synthesis of sodalite zeolite using hydrothermal synthesis method. Cu2O nanoparticles were coated on a bed of sodalite zeolite and used as an adsorbent for removal of diazinon from aqueous solutions. To analyze the process, a significant variable .i.e. removal efficiency (%) of diazinon and three dependent parameters as the...

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