scholarly journals Catalytically active nanosized Pd9Te4 (telluropalladinite) and PdTe (kotulskite) alloys: first precursor-architecture controlled synthesis using palladium complexes of organotellurium compounds as single source precursors

RSC Advances ◽  
2021 ◽  
Vol 11 (13) ◽  
pp. 7214-7224 ◽  
Author(s):  
Aayushi Arora ◽  
Preeti Oswal ◽  
Gyandshwar K. Rao ◽  
Sushil Kumar ◽  
Ajai K. Singh ◽  
...  
Keyword(s):  
Catalytic Reduction ◽  
Suzuki Coupling ◽  
Palladium Complexes ◽  
Controlled Synthesis ◽  
Single Source ◽  
Single Source Precursors ◽  
Catalytically Active ◽  
Potential Applications ◽  
Organotellurium Compounds

First precursor-architecture controlled synthesis of Pd9Te4 and PdTe nanostructures that have potential applications in Suzuki coupling of 4-chlorobenzaldehyde and catalytic reduction of 4-nitrophenol.

scholarly journals Ferrierite and Its Delaminated Forms Modified with Copper as Effective Catalysts for NH3-SCO Process

Materials ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 4885
Author(s):  
Aneta Święs ◽  
Małgorzata Rutkowska ◽  
Andrzej Kowalczyk ◽  
Urbano Díaz ◽  
Antonio E. Palomares ◽  
...  
Keyword(s):  
Copper Oxide ◽  
Ammonia Oxidation ◽  
Catalytic Reduction ◽  
Surface Acidity ◽  
Selective Reduction ◽  
Exchange Method ◽  
Copper Species ◽  
Selective Catalytic Oxidation ◽  
Catalytically Active ◽  
Copper Cations

Ferrierites and their delaminated forms (ITQ-6), containing aluminum or titanium in the zeolite framework, were synthetized and modified with copper by an ion-exchange method. The obtained samples were characterized with respect to their chemical composition (ICP-OES), structure (XRD, UV-Vis DRS), textural parameters (N2-sorption), surface acidity (NH3-TPD), form and reducibility of deposited copper species (UV-Vis DRS and H2-TPR). Ferrierites and delaminated ITQ-6 zeolites modified with copper were studied as catalysts for the selective catalytic oxidation of ammonia to dinitrogen (NH3-SCO). It was shown that aggregated copper oxide species, which were preferentially formed on Ti-zeolites, were catalytically active in direct low-temperature ammonia oxidation to NO, while copper introduced into Al-zeolites was present mainly in the form of monomeric copper cations catalytically active in selective reduction of NO by ammonia to dinitrogen. It was postulated that ammonia oxidation in the presence of the studied catalysts proceeds according to the internal-selective catalytic reduction mechanism (i-SCR) and therefore the suitable ratio between aggregated copper oxide species and monomeric copper cations is necessary to obtain active and selective catalysts for the NH3-SCO process. Cu/Al-ITQ-6 presented the best catalytic properties possibly due to the most optimal ratio of these copper species.

Solution state fluxionality and thermolysis reactions of bimetallic single source precursors for I-III-VI chalcopyrite materials

2018 ◽  
Vol 480 ◽  
pp. 189-196 ◽  
Author(s):  
Anh H.T. Nguyen ◽  
Jacob L. Tennant ◽  
Leah J. Maxton ◽  
Andrew W. Holland
Keyword(s):  
Single Source ◽  
Single Source Precursors ◽  
Solution State
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