نتایج جستجو برای: monometallic catalyst
تعداد نتایج: 44338 فیلتر نتایج به سال:
The activities and stabilities of non-platinum group metals (PGMs) in the forms monometallic (Mn 2 O 3 , Fe Co 4 NiO) bimetallic (NiFe CoNiO ) oxides were assessed for oxygen evolution reaction (OER) alkaline media compared with IrO . Both half-cell, rotating disc electrode (RDE) apparatus single-cell, membrane assemblies (MEA) used to study kinetic device-level performance parallel provide ins...
• ITQ2 supported AgAu nanoclusters are active catalysts for CO oxidation. alloyed sites the most centres as they favour reactants adsorption. Different catalyst pretreatments result in different rearrangement of atoms. Nanoclusters evolve during reaction forming and stable catalytic sites. Catalytic tests with situ characterization provides insight into dynamics. The bimetallic nanocluster stru...
The azanickellacyclic complex (1) produced by trimerization of an isocyanide on the nickel atom is found to be a new ethylene polymerization catalyst; catalytic activity is increased by incorporation of the second metal to a diimino moiety of 1 leading to formation of heterobimetallic complexes.
By investigating the coordination chemistry of a neutral N-heterocyclic olefin phosphine ligand, a new digold(i) chloride complex was discovered, demonstrating that mixed element (P/C) donor sites can be accessed at the same time. However attempts to extend this strategy for the preparation of heterobimetallic complexes featuring copper(i) and gold(i) centers with this mixed donor ligand were u...
The dimetallic [M(2)(bpy)(2)(NO(3))(2)](NO(3))(2) moieties (M = Pd(II) or Pt(II)) react preferentially at the pyrazolyl end of the pyridyl-pyrazole ligand, giving rise to dimetallic corners. Subsequently, the dimetallic corner building blocks featuring two pyridine donors are coordinated by monometallic [M(bpy)(NO(3))(2)] moieties (M = Pd(II) or Pt(II)) to form homo- or hetero-metallomacrocycles.
Introduction The integration of fuel processors, the catalytic units that can convert fossil fuels to hydrogen-rich streams, with hydrogen fuel cells is considered as a promising solution to the problems related to the availability, distribution and storage of hydrogen. Recent computer-based studies have demonstrated the possibility of efficient hydrogen production on-board the vehicles through...
Abstract: Hydrogen has been considered as one of the sustainable energy carriers and displays great potential for ever-increasing environmental demands. Electrochemical water splitting recognized a clean effective method to product hydrogen in future. Transitionally, catalysts are noble metal base materials but suffer from high cost low reserves. Thus, developing cost-effective electrocatalysts...
Technical lignins are an attractive and renewable source for the production of aromatic chemicals. However, efficient depolymerization technical to valuable low-molecular-weight chemicals is challenging due its recalcitrant nature. Here, we report use nonprecious metal-based, monometallic Ni (prereduced) bimetallic NiMo (in situ sulfided) catalysts supported on mesoporous alumina, either as suc...
Two Ag-Pd (nominal 1 % wt each) bimetallic catalysts supported on commercial activated carbon were synthesized and tested, for the first time, in hydrodechlorination (HDC) of trichloromethane (TCM) to obtain light olefins. different Pd precursors used, PdCl2 Pd(NO3)2, being resulting denoted as AgPdCl/C AgPdN/C, respectively. A monometallic Ag catalyst was also prepared comparison purposes. The...
We unveil a universal feature in the distribution of atomic-pair distances that characterizes melting monometallic nanoparticles, vacuum or strongly interacting environment, regardless their size, shape, and composition.
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