نتایج جستجو برای: palladium doped

تعداد نتایج: 60373  

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2005
Minako Iwakuma Yoshinari Baba

2-Dodecylthiomethylpyridine (DTP) was newly synthesized to study its extraction properties for precious metals. DTP was a selective extractant for palladium(II) and gold(III) over base metals. The loading test for palladium(II) showed that one palladium ion reacted with one molecule of DTP. The extraction rate of palladium with DTP was measured using a Lewis-type transfer cell at 303 K. The ext...

2015

We report the environmental benign route in the synthesis of palladium nanoparticles using the aqueous leaf broth of Acalypha indica L. In this protocol, the biomolecules present in the leaf broth, reduced palladium ions into palladium nanoparticles and these biomolecules also acted as capping and stabilizing agents. The colour change in the reaction medium from pale yellow to dark brown during...

2003
F. G. Will

Highlights are presented of recent results obtained on deuterium and hydrogen loading of palladium both in electrolytes and in the gas phase. Reproducible tritium generation has been found on palladium cathodes with deuterium loadings approaching one deuterium atom per palladium atom. Tritium generation has been observed on four out of four such highly loaded cathodes. No tritium has been obser...

M. Asadzadeh Seyed Ali Akbar Sajadi,

The goal of this work is the separation and recovery of platinum and palladium from spent catalyst. The recovery consisted of separating the maximum amount of platinum and palladium from catalysts and changing them into usable forms. The petroleum and petrochemical units use Pt and Pd catalyst for reactions such as reforming and hydrogenation. Because these materials contain valuable metals...

2013
Johnson Matthey

TÜBİTAK Marmara Research Center, Chemistry Institute, 41470 Gebze, Kocaeli, Turkey Email: [email protected] Activated carbon-supported palladium catalysts are liable to progressive deactivation even in the absence of any gaseous contaminants during the oxidation of hydrogen under ambient conditions. The high value of palladium coupled with environmental considerations means that n...

Nowadays, palladium compounds due to their especial characteristics used in different industries, mainly in electrical power sources and chemical productions as a catalyst. Therefore, Pd concentration is increasing in our around that can be contaminant our environment due its toxic effects. In this work, a simple, selective and rapid flow injection method of analysis (FIA) has been developed fo...

Journal: :Pakistan journal of pharmaceutical sciences 2018
Muhammad Mukhtiar Syed Umer Jan Muhammad Farid Khan Naseem Ullah Abid Hussain Saifur Rehman Muhammad Murtaza Qureshi

The metalloelement Palladium has a number of potential Pharmaco-clinical advantages. Palladium compounds have antiviral, antibacterial, neuroprotective and antitumor properties. However studies have also indicated some mild to serious toxic effects of Palladium metalloelements. Biothiols are important antioxidants that provide protection against metals toxicity. The interaction of metalloelemen...

Journal: :Applied Surface Science 2021

Experimental evidence exists for the enhancement of hydrogen storage capacity porous carbons when these materials are doped with metal nanoparticles. One most studied dopants is palladium. Dissociation molecules and spillover H atoms towards carbon substrate has been advocated as reason capacity. We have investigated this mechanism by performing ab initio density functional molecular dynamics (...

Journal: :Journal of composites science 2022

Metal-nanocluster-doped porous composite materials are attracting considerable research attention, due to their specific catalytic performance. Here we report a simple, cheap, and efficient strategy for the preparation of palladium hydrogenation catalysts based on metal-organic frameworks (MOFs). It has been shown that synthesis Pd/MOF results in formation nanoparticles uniformly fixed surface....

2017
Yi Lai Zhijian Zong Yujie Tang Weimin Mo Nan Sun Baoxiang Hu Zhenlu Shen Liqun Jin Wen-hua Sun Xinquan Hu

A series of bulky geometry-constrained iminopyridylpalladium chlorides were developed. The steric environment adjacent to the nitrogen atom in the pyridine rings and diimine parts enhanced the thermal stability of the palladium species. Bulkier groups at the imino group stabilized the palladium species and the corresponding palladium chlorides showed high activities in the coupling reaction of ...

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