toward the reduction of p-nitrophenyl compounds, we designed a new one-dimensional Fe3O4/FeNi embedded-nanostructured catalyst synthesized by a one-pot controlling-growth-reduction process in a solvothermal system, in which Fe3O4 phase was implanted in the base of FeNi alloy. In the Fe3O4/FeNi catalyst system, the Fe3O4 embedded phase attracts the nitro group of p-nitrophenyl compounds by its high-density
为满足对还原对硝基苯基化合物的高催化效率的要求,我们设计了一种新的一维Fe 3 O 4 / FeNi埋藏式纳米结构催化剂,该催化剂通过一锅法控制-增长-还原过程在溶剂热体系中合成。在FeNi合金的基体中注入Fe 3 O 4相。在Fe 3 O 4 / FeNi催化剂体系中,Fe 3 O 4嵌入相吸引了p的硝基。-硝基苯基化合物通过其高密度电子,可以有效地促进非晶态FeNi活性中心的活性,以进行选择性催化,以减少对硝基苯基化合物的范围。而且,对于硝基苯基化合物中的对位基团,给电子能力的增加有助于较高的催化活性,而吸电子能力得到的情况则相反。另外,Fe 3 O 4 / FeNi复合纳米催化剂在20倍以上表现出出色的循环性能,而性能没有明显下降。这项工作为设计用于绿色化学的功能更强大的非贵金属催化剂开辟了道路。
The isothermal section phase diagram of the Sm-Fe-Ni ternary system at 800 °C
作者:K. Nouri、M. Jemmali、S. Walha、K. Zehani、L. Bessais、A. Ben Salah
DOI:10.1016/j.jallcom.2015.11.116
日期:2016.3
Abstract Isothermal section at 800 °C of the ternary Sm-Fe-Ni system was established in the whole concentration range, by means of powder X-ray diffraction and scanning electron microscopyenergy dispersive X-ray spectroscopy (SEM/EDS). All measured compositions and unit-cell refinements were performed at roomtemperature from quenched samples annealed at 800 °C for one week. Ten binary compounds and
Aqueous phase semihydrogenation of alkynes over Ni–Fe bimetallic catalysts
作者:Rohit K. Rai、Mahendra K. Awasthi、Vipin K. Singh、Sudipta Roy Barman、Silke Behrens、Sanjay K. Singh
DOI:10.1039/d0cy01153c
日期:——
Bimetallic Ni–Fe catalysts (Ni/Fe, 1 : 1, 1 : 3, and 3 : 1) are synthesized and explored for their catalytic activity in semihydrogenation of internal alkynes using H2 gas in water–ethanol solution.
At the frontier between heterogeneous and homogeneous catalysis: hydrogenation of olefins and alkynes with soluble iron nanoparticles
作者:Claudine Rangheard、César de Julián Fernández、Pim-Huat Phua、Johan Hoorn、Laurent Lefort、Johannes G. de Vries
DOI:10.1039/c0dt00177e
日期:——
nanoparticles in the hydrogenation of unsaturated C–C bonds is a green catalytic concept at the frontier between homogeneous and heterogeneous catalysis. Iron nanoparticles can be obtained by reducing Fe salts with strong reductants in various solvents. FeCl3 reduced by 3 equivalents of EtMgCl forms an active catalyst for the hydrogenation of a range of olefins and alkynes. Olefinhydrogenation is relatively
Electrodeposition of Iron‐Group Metals and Binary Alloys from Sulfate Baths: I. Experimental Study
作者:Keith Y. Sasaki、Jan B. Talbot
DOI:10.1149/1.1838375
日期:1998.3.1
Thin films of the iron-group elemental metals (Ni, Co, and Fe, group VIIIB) and binaryalloys (NiCo, CoFe, and NiFe) were galvanostatically electroplated onto a platinum rotating disk electrode from simple sulfate baths. In all cases, the increasing electrode rotational rate was found to decrease the partial current densities at a given cathodic potential. Experimental results indicate that for electrodeposition: