نتایج جستجو برای: zeolite particles

تعداد نتایج: 164882  

2005
Kholoud Mashal James B. Harsh Markus Flury Andrew R. Felmy

Cancrinite, sodalite, and zeolite A have been found to form upon contacting hyperalkaline simulated tank waste (STW) with vadose zone sediments from the Hanford Reservation. Here, soluble silica and STW are used to study mineral formation and transformation. Two Hanford sediment fractions (diameters <50 and >50 lm instead of soluble silica) are also used as silica sources for comparison. A seri...

Hamid Madani, Masoud Gomarian Seid Rasol Mohammadi Hosseini

The application of zeolite to soils increases cation exchange capacity, and as increases nutrient retention capacity. Imbalanced nutrient management is one of the reasons responsible for low yield of potato in Iran. This study was carried out in research field of Islamic Azad University; Arak Branch at central of Iran to evaluate effect of zeolite particles and phosphorus fertilizer on agro-phy...

2015
Zoran Ristanović Jan P. Hofmann Gert De Cremer Alexey V. Kubarev Marcus Rohnke Florian Meirer Johan Hofkens Maarten B. J. Roeffaers Bert M. Weckhuysen

Optimizing the number, distribution, and accessibility of Brønsted acid sites in zeolite-based catalysts is of a paramount importance to further improve their catalytic performance. However, it remains challenging to measure real-time changes in reactivity of single zeolite catalyst particles by ensemble-averaging characterization methods. In this work, a detailed 3D single molecule, single tur...

In fiber concretes, microcracks in the boundary area between the cement paste and the surface of aggregates or fibers are higher. Natural and artificial pozzolans can be used for reinforcing this area. In this research, the combination of glass fiber, zeolite, and nano silica particles were used in lightweight self-compacting concrete containing scoria. Fiber volume fractions between 0% to 1.5%...

Journal: :ACS Catalysis 2021

Zeolite-supported metal catalysts are widely employed in a number of chemical processes, and the stability catalytically active species is one most critical factors determining reaction performance. A good example Pd/zeolite catalyst, which provides high activity for methane oxidation but deactivates rapidly under conditions due to palladium nanoparticle sintering. Although coating metals with ...

Journal: :Chemical communications 2013
Shiwen Li Laurence Burel Cindy Aquino Alain Tuel Franck Morfin Jean-Luc Rousset David Farrusseng

We report an original and scalable synthesis pathway to produce encapsulated gold nanoparticles. Precise control of the gold particles is achieved in the range of 1-10 nm through the impregnation of silicalite-1 with a controlled concentration of gold solution, followed by dissolution-recrystallization of the zeolite.

Journal: :Sustainability 2021

In the present investigation, we compared reduction in attachment ability of southern green stinkbug Nezara viridula (Hemiptera: Pentatomidae) to glass induced by three different nanoparticle (kaolin, zeolite, and calcium carbonate) films. Using traction force experiments, behavioral scanning electron microscopy observations, analyzed insect linear speed on untreated treated with particle The n...

2018
Alenka Ojstršek Darinka Fakin

The presented study focuses on the development of a pad-dry-thermofix functional coating process using a mixture of microporous aluminosilicate particles in diverse bath formulations to impart UV-ray-blocking, thermal stability and easy-care properties to the cotton fabric. The results of Scanning Electron Microscopy (SEM) and X-ray powder Diffraction (XRD) revealed the presence of three differ...

In this research, zeolite A was synthesized from waste porcelain and CdS nano-particles were doped in zeolite framework by a precipitation after an ion exchanging process. All raw and modified samples were characterized by FT-IR, XRD and SEM methods. Primary experiments showed that the good efficiency of loaded nano CdS onto the zeolite A for photodecomposition of dimethyldisulfide (DMDS) under...

In this research, zeolite A was synthesized from waste porcelain and CdS nano-particles were doped in zeolite framework by a precipitation after an ion exchanging process. All raw and modified samples were characterized by FT-IR, XRD and SEM methods. Primary experiments showed that the good efficiency of loaded nano CdS onto the zeolite A for photodecomposition of dimethyldisulfide (DMDS) under...

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