نتایج جستجو برای: transition nano metal zeolite

تعداد نتایج: 490931  

2005
S Maruyama Y Miyauchi Y Murakami S Chiashi

By using alcohol as carbon source, high-purity single-walled carbon nanotubes (SWNTs) can be generated at relatively low CVD temperatures from metal catalysts supported with zeolite [1]. Based on these findings, we have proposed alcohol catalytic CVD (ACCVD) technique. In addition to the conventional metal particles supported on zeolite, we have developed a simple dip-coat method to directly di...

2016
Sohrab Ismail-Beigi

1 Abstract The general objective of the proposed research is to use ab initio techniques to develop a fundamental understanding of the relationship between the atomic and electronic structure of nanostructured materials and their functional properties. Our research will both expand upon the work performed in the past year using XSEDE resources and embark on the study of important new systems. I...

Journal: :تحقیقات نظام سلامت 0
بیژن بینا استاد، مرکز تحقیقات محیط زیست و گروه بهداشت محیط، دانشکده بهداشت دانشگاه علوم پزشکی اصفهان، اصفهان، ایران افشین ابراهیمی استادیار، مرکز تحقیقات محیط زیست و گروه بهداشت محیط، دانشکده بهداشت دانشگاه علوم پزشکی اصفهان، اصفهان، ایران امیر محمدی انشجوی کارشناسی ارشد، کمیته تحقیقات دانشجویی، گروه بهداشت محیط، دانشکده بهداشت و مرکز تحقیقات محیط زیست، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران محمد مهدی امین دانشیار، مرکز تحقیقات محیط زیست و گروه بهداشت محیط، دانشکده بهداشت دانشگاه علوم پزشکی اصفهان، اصفهان، ایران حمیدرضا پورزمانی دانشجوی کارشناسی ارشد، کمیته تحقیقات دانشجویی، دانشکده بهداشت و مرکز تحقیقات محیط زیست، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران.

background: natural organic compounds are known as precursors in the formation of disinfection byproducts. the aim of this study was to evaluate of effect of modified cationic surfactant nano zeolite in the removal of humic acid (ha) from water. materials and methods: nano zeolite (clinoptilolite) was modified by cationic surfactant solution hexadecyltrimethylammonium bromide (hdtma-br), in dos...

Journal: :journal of particle science & technology 2015
mohammad kazemeini amir charkhi seyyed javad ahmadi

in order to investigate the gas separation ability of a column packed with nanozeolitic material, nano nay zeolite was synthesized and granulated. these uniform granules packed in a chromatographic column were utilized for separation of xe and kr under various operating conditions. with regards to the response peaks obtained from trace injections of xe and kr into the column, the first and seco...

2013
Bassam El-Eswed Mazen Alshaaer Rushdi Ibrahim Yousef Imad Hamadneh Fawwaz Khalili

This work deals with geopolymers based on local Jordanian resources, namely, kaolin and zeoltitic (phillipsite) tuff. The geopolymers were prepared from these two materials by a reaction with an alkali solution at 80oC. The research group of the present work has demonstrated in previous work that addition of zeolitic tuff to kaolin based-geopolymers increases the adsorption capacity toward Cu(I...

Journal: :Dalton transactions 2009
Lei Liu David S Wragg Hongyan Zhang Ying Kong Peter J Byrne Timothy J Prior John E Warren Zhuojia Lin Jinxiang Dong Russell E Morris

The first metal phosphate analogue of the zeolite Na-J (framework type JBW) has been synthesized by an ionothermal approach along with zincophosphate thomsonite.

  Magnesium and its alloys are light, biodegradable, biocompatible metals that have promising applications as biomaterials. Magnesium is potentially useful for orthopedic and cardiovascular applications. However, the corrosion rate of this metal is so high that its degradation occurs before the end of the healing process. One of the ways to improve the corrosion rate is to compose it’s with cer...

Journal: :Civil engineering and architecture 2022

An experimental study conducted to evaluate the hardened and durability characteristics of ternary blended concrete containing Nano-Silica Zeolite along with steel fibers act as micro- reinforcement has been presented in this paper. were included different dosages optimum combination above two materials (Nano-Silica -1% Zeolite- 10%) obtained through trails from viewpoint workability strength. ...

Journal: :Environmental toxicology and chemistry 2014
Dominic A Notter Denise M Mitrano Bernd Nowack

Recently, much has been written about the extreme urgency of elaborating the regulations for engineered nanomaterials. Such regulations are needed both from lawmakers, to protect people from potentially adverse effects, and from industry representatives, to prove that nanoproducts are produced carefully and with caution to avoid possible lawsuits. However, developing regulations has proven to b...

2013
Dingdi Wang Wenhao Guo Juanmei Hu Fang Liu Lisheng Chen Shengwang Du Zikang Tang

We demonstrate a technique to determine the Van der Waals radius of iodine atoms using Raman spectroscopy. The iodine diatomic molecules are diffused into the nano-scale channels of a zeolite single crystal. We found their polarized Raman spectroscopy, which corresponds to iodine molecule's vibrational motion along the direction of molecular axis, is significantly modified by the interaction be...

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