نتایج جستجو برای: bimetallic catalysts preparation

تعداد نتایج: 209300  

2013
Zachary D. Pozun Stacia E. Rodenbusch Emily Keller Kelly Tran Wenjie Tang Keith J. Stevenson Graeme Henkelman

We demonstrate that the reduction of p-nitrophenol to p-aminophenol by NaBH4 is catalyzed by both monometallic and bimetallic nanoparticles (NPs). We also demonstrate a straightforward and precise method for the synthesis of bimetallic nanoparticles using poly(amido)amine dendrimers. The resulting dendrimer encapsulated nanoparticles (DENs) are monodisperse, and the size distribution does not v...

Journal: :Catalysts 2022

In this work, we study the effect of modifying metal loading (0.5–1.5 wt.% Pd and 0.1–1 Sn or In), impregnation order noble promoter (Pd–Sn Sn–Pd), type (Sn In) during preparation process for a bimetallic catalyst, supported on γ-alumina, used in catalytic reduction nitrate. The deposition over metal, especially with Pd:Sn ratios (wt.) 1:10 1:2, favored hydrogen spillover rate increased H conce...

Journal: :Nanoscale 2013
Pinxian Xi Yang Cao Fengchun Yang Cai Ma Fengjuan Chen Sha Yu Shuai Wang Zhengzhi Zeng Xin Zhang

We employed an efficient and facile route to synthesise monodisperse Pd-based bimetallic nanocrystals (MPd: M = Cu, Co and Ni) via a controlled co-reduction of Pd(ii) chloride and M(ii) nitrate at 200-230 °C in the presence of oleylamine (OAm). These monodisperse Pd-based nanocrystals have small dimensions, unique structures and homogeneous morphology, thus exhibit efficient catalytic activitie...

2016
Jian Feng Youquan Zhang Wei Xiong Hao Ding

A series of ZrO2 supported Ru-Co bimetallic catalysts were prepared and evaluated for the hydrogenolysis of glycerol. The Ru-Co/ZrO2 bimetallic catalyst combines the advantages of both Ru and Co, exhibiting high activity and good selectivity to 1,2-propanediol. The X-ray diffraction (XRD) and TEM results show that higher calcination temperature leads to lower reducibility of cobalt oxides and l...

Journal: :New Journal of Chemistry 2022

Low palladium content in the hybrid bimetallic copper-palladium zeolite catalysts is beneficial for dimethyl ether production from CO 2 .

Journal: :Catalysts 2021

At present, the use of conventional wastewater processes is becoming increasingly challenging, mainly due to presence biorecalcitrant organic matter. Advanced oxidation such as Fenton, Fenton-like and hybrid have been successfully employed for treatment highly concentrated toxic non-biodegradable pollutants. Here, a series bimetallic catalysts, based on Cu/Fe supported over ZrO2, were investiga...

2013
Mengnan Wang Jiaguang Zhang Ning Yan

The present research systematically investigated, for the first time, the transformation of sodium bicarbonate and CO2 into sodium formate over a series of Ni based metal nanoparticles (NPs). Ni NPs and eight NiM (M stands for a second metal) NPs were prepared by a facile wet chemical process and then their catalytic performance were evaluated in sodium bicarbonate hydrogenation. Bimetallic NiP...

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