Dual functions of CoO decoration in PtCo/CeO2 catalysts for the hydrogen-borrowing amination of alcohols to primary amines

Boosting Amination of 1‐Octanol to 1‐Octylamine via Metal‐Metal Oxide Interactions in NixFe1/Al2O3 Catalysts

“…It was reported that the interface of metal and metal oxides is active sites. [9,[14][15] In consistent with the interaction of NiÀ Al 2 O 3 , the NiÀ FeO x interaction provided Fe 2 + / Fe 3 + À O 2À Lewis acid-base pairs and Ni metal active sites, which enhanced the adsorption of the reactants and consequently improved the catalytic activity for 1-octanol amination. For the 1octylamine selectivity, it was reported that the particle size showed significantly effect on the selectivity, where the selectivity to 1-octylamine was increased from 50 % to 90 % with decreasing Ru particle size from 9 to 2 nm.…”

“…It was reported that the selectivity to byproduct of di-1-octylamine was mainly caused by self-coupling of octylamine to secondary imine and subsequent hydrogenation of secondary imine to diamine. [5][6]9] In order to further investigate the effect of Fe on the selectivity, we tested the secondary imine hydrogenation over the Ni/Al 2 O 3 and Ni 1 Fe 1 /Al 2 O 3 catalysts. As shown in Table S7, the conversion was 82.8 % over Ni/Al 2 O 3 at 1 h, while it was only 12.3 % over Ni 1 Fe 1 /Al 2 O 3 at 2 h. The XRD and XPS results indicated that NiFe alloy was formed over the NiFe/Al 2 O 3 catalysts.…”

“…For this reaction, Niu et al [8] also reported the cobalt supported catalysts with Bi promoter, which exhibited significant activity. Tong et al [9] designed a PtCo/CeO 2 catalyst and explained the role of CoO x decoration over Pt/CeO 2 . Ma et al [10] modified the Ni/Al 2 O 3 catalyst by adding 2.0 wt % Re as the second metal in the amination of monoethanolamine with ammonia.…”

Highly Efficient Synthesis of Amino Acids by Amination of Bio‐Derived Hydroxy Acids with Ammonia over Ru Supported on N‐Doped Carbon Nanotubes

“…The N dopant in Ru/N−CNTs may promote alcohol dehydrogenation during amination of hydroxy acid [23] . The imine intermediate was not detected by 1 H NMR or ESI‐MS, which can be ascribed to rapid equilibrium of the ammonia condensation with the ketone [8b,24] and easily further hydrogenation to amine. Moreover, the acid‐base reaction between carboxylic acid and ammonia is prone to occur under alkaline environment, and further dehydration to produce amide.…”

Tailored Catalytic Nanoframes from Metal–Organic Frameworks by Anisotropic Surface Modification and Etching for the Hydrogen Evolution Reaction

“…[36,37] Furthermore,t he XRD results (Supporting Information, Figure S22c Figure 4g,h and the Supporting Information, Figure S23) show peaks corresponding to Co,P t, C, and O. TheC o2p spectrum of PtCo/C (Figure 4g)c an be deconvoluted into eight individual peaks assigned to Co 0 ,C oO x and the corresponding satellites,respectively. [38,39] Thus,the Co 0 binding energies (including 2p 1/2 and 2p 3/2 )o ft he catalyst shift to…”