Alkali-containing mesoporous (alumino) silicate materials with very high metal loading

2005 ◽  
Vol 77 (2-3) ◽  
pp. 147-157 ◽  
Author(s):  
Natacha Lang ◽  
Alain Tuel
Keyword(s):  
Metal Loading ◽  
High Metal ◽  
Alumino Silicate ◽  
Very High ◽  
Silicate Materials

scholarly journals Uncommon biphasic behaviour induced by very high metal ion concentrations in HCl/H2O/[P44414]Cl and HCl/H2O/PEG-600 systems

2020 ◽  
Vol 22 (40) ◽  
pp. 23226-23236
Author(s):  
Eris Sinoimeri ◽  
Victor Maia Fernandes ◽  
Jérôme Cognard ◽  
Jorge Fernando Brandão Pereira ◽  
Lenka Svecova ◽  
...  
Keyword(s):  
Metal Ion ◽  
Ion Concentrations ◽  
System P ◽  
High Metal ◽  
Very High ◽  
Peg 600

Large amounts of Fe(iii) or Fe(ii) strongly modify the biphasic behavior of the system P44414Cl/HCl/H2O while large amounts of Fe(iii) induce a biphasic regime for the mixture PEG-600/HCl/H2O.

Facile synthesis of Pd/Fe3O4/charcoal bifunctional catalysts with high metal loading for high product yields in Suzuki–Miyaura coupling reactions

2014 ◽  
Vol 38 (11) ◽  
pp. 5626-5632 ◽  
Author(s):  
Hyunje Woo ◽  
Kyoungho Lee ◽  
Ji Chan Park ◽  
Kang Hyun Park
Keyword(s):  
Solid State ◽  
Bifunctional Catalysts ◽  
Coupling Reactions ◽  
Facile Synthesis ◽  
Product Yields ◽  
Metal Loading ◽  
High Metal ◽  
Highly Loaded

Bifunctional Pd/Fe3O4/charcoal nanocatalysts are synthesized by simple solid-state grinding. Highly loaded Pd and Fe3O4 nanoparticles are observed and exhibit high product time yield for Suzuki–Miyaura coupling reactions.

Fabrication of Single-Atom Catalysts with Precise Structure and High Metal Loading

2018 ◽  
Vol 30 (48) ◽  
pp. 1801649 ◽  
Author(s):  
Jing Wang ◽  
Zhijun Li ◽  
Yuen Wu ◽  
Yadong Li
Keyword(s):  
Single Atom ◽  
Metal Loading ◽  
High Metal

scholarly journals Pb-phytoextraction by maize in a Pb-EDTA treated Oxisol

2007 ◽  
Vol 64 (1) ◽  
pp. 52-60 ◽  
Author(s):  
Bruno Fernando Faria Pereira ◽  
Cleide Aparecida de Abreu ◽  
Solange Romeiro ◽  
Ana Maria Magalhães Andrade Lagôa ◽  
Antônio Paz-González
Keyword(s):  
Contaminated Soils ◽  
Dry Matter ◽  
Chelating Agent ◽  
Soil Samples ◽  
Visual Minteq ◽  
Saturation Extract ◽  
High Metal ◽  
Maize Plants ◽  
Plant Shoots ◽  
Very High

One of the most viable strategies to restore metal contaminated soils is the introduction of plants specialized in their accumulation or able to tolerate very high metal concentrations. This research evaluated: i. the maize as a Pb-accumulator plant; ii. the effects of EDTA-chelating agent for Pb-uptake by maize; iii. amending effect of EDTA on the soil Pb-availability using different extracts. Treatments consisted of Pb rates (100; 200; 350; 1,200 and 2,400 mg kg-1) applied to a Rhodic Hapludox in the form of Pb3(NO)2 with (0.5 g kg-1) and without EDTA. Lead concentrations were determined in maize plant shoots. Soil available Pb was obtained using DTPA, Mehlich-3 and saturation solutions methods. Ionic speciation in the soil solution was performed using the software Visual-Minteq. Although a low t value was found (t <0.70), Pb concentration were high (>1,500 mg kg-1 of Pb) in maize shoots regardless of EDTA addition. Maize plants treated with EDTA had lower dry matter yield, mainly due to toxic levels of Fe and Al of the Oxisol. All extracting solutions were effective to determine available Pb in soil samples, but the saturation extract is a more difficult and time consuming procedure. At low and medium Pb levels, the plants grew less on EDTA, therefore the phytoextration process was less efficient. The addition of EDTA to the soil is not recommended with the purpose of increasing Pb absorption by maize plants.

Modified polyol synthesis of PtRu/C for high metal loading and effect of post-treatment

2010 ◽  
Vol 195 (4) ◽  
pp. 1031-1037 ◽  
Author(s):  
Kug-Seung Lee ◽  
Hee-Young Park ◽  
Yong-Hun Cho ◽  
In-Su Park ◽  
Sung Jong Yoo ◽  
...  
Keyword(s):  
Post Treatment ◽  
Polyol Synthesis ◽  
Metal Loading ◽  
High Metal
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