نتایج جستجو برای: bimetallic catalyst
تعداد نتایج: 47373 فیلتر نتایج به سال:
Inspired by the active site of CO dehydrogenase, a metalloporphyrin-based mimic has been synthesized combining multipoint hydrogen bond donor and bimetallic centre, as reported Zakaria Halime, Ally Aukauloo et al. in their Communication (e202214665). The cooperativity between two metal centres catalyst was shown for both homo- heterobimetallic analogues, leading to significant enhancement catal...
The iridium(Ir) (triNHC = tri-N-heterocyclic carbene)-catalyzed transfer hydrogenation of glycerol carbonate (GC) is described in the absence additional hydride sources. reduction provides a sustainable route to produce industrially-valuable formate and lactate with high turnover numbers (TONs). bimetallic Ir(I) involving triNHC carbene ligands exhibits TONs, reaction mechanism, including Ir(tr...
Non-noble-metal-based nanomaterials can exhibit extraordinary electrocatalytic performance toward the oxygen evolution reaction (OER) by harnessing structural during catalysis and synergistic effect between elements. However, structure of active centers in bimetallic/multimetallic catalysts is under long-time debate community. Here, an efficient bimetallic Ni–Fe selenide-derived OER electrocata...
Ammonia boron is one of the chemical compounds with high energy density that eliminates problem storing hydrogen, a clean source. borane (NH3BH3), hydrogen storage compounds; High capacity (19.6% H2 by mass) has very important place in fuel technology due to its stable structure aqueous solution. The main parameter determining ammonia hydrolysis, production efficiency and reaction course cataly...
Bimetallic dendrimer-encapsulated nanoparticles (DENs) are important materials, because they have demonstrated improvement in performance compared to the monometallic DENs in many systems when they are used as catalysts. This tutorial review focuses on the recent research advances in bimetallic DENs with respect to their synthesis, characterization, and applications as catalysts. Bimetallic DEN...
Bimetallic catalysts containing platinum and transition metals (PtM, M = Mo, Ni, CoCr) were synthesized on carbon nanotubes (CNTs) functionalized in an alkaline medium. Their content is 10–15% by mass. PtM/CNTNaOH are active both the hydrogen oxidation reaction (HOR) oxygen reduction (ORR) electrolytes. Although based a single metal inactive HOR, their activity cathode process of ORR increases ...
A monometallic Ni and a bimetallic Ni-Fe catalyst were used in the aqueous phase hydrogenation of xylose batch conditions (T = 50–150 °C, PH2 10–30 bar, mass fraction water 3.7–11.0 wt.%) to evidence benefits promoting by Fe. The activity catalysts increased with temperature, but temperature 80 °C allowed minimizing nickel leaching at full conversion. presence reduced Fe surface nanoparticles b...
Nickel is an ideal non-noble metal anode catalyst for direct urea fuel cell (DUFC) due to its high activity. However, there exists a large overpotential toward urea electrooxidation. Herein, NiCo/C bimetallic nanoparticles were prepared with various Co contents (0, 10, 20, 30 and 40 wt%) to improve the activity. The best Co ratio was 10% in the aspect of cell performance, with a maximum power d...
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