Bimetallic Nanoparticles as Efficient Catalysts: Facile and Green Microwave Synthesis

被引:39
作者
Blosi, Magda [1 ]
Ortelli, Simona [1 ]
Costa, Anna Luisa [1 ]
Dondi, Michele [1 ]
Lolli, Alice [2 ]
Andreoli, Sara [2 ]
Benito, Patricia [2 ]
Albonetti, Stefania [2 ]
机构
[1] CNR, Inst Sci & Technol Ceram, ISTEC CNR, Via Granarolo 64, I-48018 Faenza, Italy
[2] Univ Bologna, Dept Ind Chem Toso Montanari, Viale Risorgimento 4, I-40136 Bologna, Italy
关键词
Au/Cu; Pd/Au; Pd/Cu; nanosols; microwave-assisted synthesis; supported catalysts; HMF; hydrodechlorination; SIZE-CONTROLLED SYNTHESIS; ROD-SHAPED GOLD; SELECTIVE OXIDATION; PHASE OXIDATION; 2,5-FURANDICARBOXYLIC ACID; AEROBIC OXIDATION; POLYOL-PROCESS; AU; PD; CU;
D O I
10.3390/ma9070550
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
This work deals with the development of a green and versatile synthesis of stable monoand bi-metallic colloids by means of microwave heating and exploiting ecofriendly reagents: water as the solvent, glucose as a mild and non-toxic reducer and polyvinylpirrolidone (PVP) as the chelating agent. Particle size-control, total reaction yield and long-term stability of colloids were achieved with this method of preparation. All of the materials were tested as effective catalysts in the reduction of p-nitrophenol in the presence of NaBH4 as the probe reaction. A synergistic positive effect of the bimetallic phase was assessed for Au/Cu and Pd/Au alloy nanoparticles, the latter showing the highest catalytic performance. Moreover, monoand bi-metallic colloids were used to prepare TiO2-and CeO2-supported catalysts for the liquid phase oxidation of 5-hydroxymethylfufural (HMF) to 2,5-furandicarboxylic acid (FDCA). The use of Au/Cu and Au/Pd bimetallic catalysts led to an increase in FDCA selectivity. Finally, preformed Pd/Cu nanoparticles were incorporated into the structure of MCM-41-silica. The resulting Pd/Cu MCM-41 catalysts were tested in the hydrodechlorination of CF3OCFClCF2Cl to CF3OCF= CF2. The effect of Cu on the hydrogenating properties of Pd was demonstrated.
引用
收藏
页数:25
相关论文
共 67 条
[1]  
Albonetti S., 2014, Transit, P1, DOI 10.1039/9781782621652-00001
[2]  
Albonetti S., 2007, U.S. Patent, Patent No. [WO2012/104365, 2012104365]
[3]   Conversion of 5-hydroxymethylfurfural to 2,5-furandicarboxylic acid over Au-based catalysts: Optimization of active phase and metal-support interaction [J].
Albonetti, Stefania ;
Lolli, Alice ;
Morandi, Vittorio ;
Migliori, Andrea ;
Lucarelli, Carlo ;
Cavani, Fabrizio .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2015, 163 :520-530
[4]   Selective oxidation of 5-hydroxymethyl-2-furfural over TiO2-supported gold-copper catalysts prepared from preformed nanoparticles: Effect of Au/Cu ratio [J].
Albonetti, Stefania ;
Pasini, Thomas ;
Lolli, Alice ;
Blosi, Magda ;
Piccinini, Marco ;
Dimitratos, Nikolaos ;
Lopez-Sanchez, Jose A. ;
Morgan, David J. ;
Carley, Albert F. ;
Hutchings, Graham J. ;
Cavani, Fabrizio .
CATALYSIS TODAY, 2012, 195 (01) :120-126
[5]   Role of the preparation method on properties of Pd/Cu-MCM-41 hydrodechlorinating catalysts [J].
Benito, Particia ;
Gregoria, Manuel ;
Andreoli, Sara ;
Fornasari, Giuseppe ;
Millefanti, Stefano ;
Ospitali, Francesca ;
Albonetti, Stefania .
CATALYSIS TODAY, 2014, 235 :134-143
[6]   Pd-Cu interaction in Pd/Cu-MCM-41 catalysts: Effect of silica source and metal content [J].
Benito, Patricia ;
Gregori, Manuel ;
Andreoli, Sara ;
Fornasari, Giuseppe ;
Ospitali, Francesca ;
Millefanti, Stefano ;
Avila, Maria Sol ;
Garetto, Teresita F. ;
Albonetti, Stefania .
CATALYSIS TODAY, 2015, 246 :108-115
[7]   Selective liquid phase oxidation using gold catalysts [J].
Bianchi, C ;
Porta, F ;
Prati, L ;
Rossi, M .
TOPICS IN CATALYSIS, 2000, 13 (03) :231-236
[8]   Green and easily scalable microwave synthesis of noble metal nanosols (Au, Ag, Cu, Pd) usable as catalysts [J].
Blosi, M. ;
Albonetti, S. ;
Ortelli, S. ;
Costa, A. L. ;
Ortolani, L. ;
Dondi, M. .
NEW JOURNAL OF CHEMISTRY, 2014, 38 (04) :1401-1409
[9]   Au-Ag nanoparticles as red pigment in ceramic inks for digital decoration [J].
Blosi, M. ;
Albonetti, S. ;
Gatti, F. ;
Baldi, G. ;
Dondi, M. .
DYES AND PIGMENTS, 2012, 94 (02) :355-362
[10]  
Blosi M., 2010, European Patent, Patent No. [WO 2010/100107, 2010100107]