Structure and Catalytic Performance of Pt–Cu Bimetallic Catalysts Synthesized by a Radiation-Induced Reduction Method in the Aqueous Phase: Influence of Support Material and Sulfate Ion in the Precursor

2013 ◽  
Vol 117 (11) ◽  
pp. 5742-5751 ◽  
Author(s):  
Junichiro Kugai ◽  
Toshiharu Moriya ◽  
Satoshi Seino ◽  
Takashi Nakagawa ◽  
Yuji Ohkubo ◽  
...  
Keyword(s):  
Aqueous Phase ◽  
Bimetallic Catalysts ◽  
Reduction Method ◽  
Catalytic Performance ◽  
Support Material ◽  
Sulfate Ion ◽  
Radiation Induced

Catalytic Hydrogenation of Nitrate Ions over Pd-Cu/ZSM-5 Catalyst

2011 ◽  
Vol 197-198 ◽  
pp. 967-971 ◽  
Author(s):  
Wen Liang Gao ◽  
Fang Li
Keyword(s):  
Bimetallic Catalysts ◽  
Reduction Method ◽  
Bimetallic Catalyst ◽  
Chemical Reduction ◽  
Catalytic Performance ◽  
Nitrite Reduction ◽  
Molar Ratio ◽  
Chemical Reduction Method ◽  
Nitrate Ions ◽  
Mild Conditions

Palladium-copper bimetallic catalysts supported over different supporters were prepared by chemical reduction method, and their catalytic performance was investigated with the hydrogenation of nitrate ions in drinking water under mild conditions. The results show that Pd-Cu/ZSM-5 bimetallic catalyst has the highest catalytic activity among all used catalysts. In addition, nitrate conversion influenced by metal content, metal molar ratio (Pd:Cu) and the addition of CO2 are also discussed. It is well established that the addition of CO2 has changed the reduction path of the intermediate nitrite, but is no influence on the steps of nitrate-to-nitrite reduction. In the end, the mechanism of catalytic nitrate reduction was discussed on the basis the literature results.

Hydrogenolysis of Glycerol on Supported Ru-Co Bimetallic Catalysts

2012 ◽  
Vol 549 ◽  
pp. 297-300 ◽  
Author(s):  
Jian Feng ◽  
Bin Xu ◽  
Wei Dong Jiang ◽  
Wei Xiong ◽  
Jin Bo Wang
Keyword(s):  
Bimetallic Catalysts ◽  
Catalytic Properties ◽  
Catalytic Performance ◽  
Atomic Ratio ◽  
Support Material ◽  
Metal Component ◽  
Selective Hydrogenolysis

The hydrogenolysis of biomass-derived glycerol was studied on Ru-Co bimetallic catalysts, including Ru-Co/TiO2, Ru-Co/ZrO2, Ru-Co/SiO2 and Ru-Co/γ-Al2O3. The addition of Co to the Ru-based catalysts can promote the selectivity to 1,2-propanediol (1,2-PDO). The support material and Ru/Co atomic ratio has a significant effect on the catalytic performance. Ru-Co/ZrO2 exhibited the best performance as regard to both the activity and the selectivity to 1,2-PDO. Co is a promising second metal component to adjust the catalytic properties of Ru-based catalysts for the selective hydrogenolysis of glycerol.

Structure of Ni/HZSM-5 Catalyst and Its Catalytic Performance for Aqueous Phase Hydrogenation of Sorbitol to Alkanes

2011 ◽  
Vol 32 (4) ◽  
pp. 612-617
Author(s):  
Ke QIU ◽  
Qing ZHANG ◽  
Ting JIANG ◽  
Longlong MA ◽  
Tiejun WANG ◽  
...  
Keyword(s):  
Aqueous Phase ◽  
Catalytic Performance

scholarly journals High-throughput computational-experimental screening protocol for the discovery of bimetallic catalysts

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Byung Chul Yeo ◽  
Hyunji Nam ◽  
Hyobin Nam ◽  
Min-Cheol Kim ◽  
Hong Woo Lee ◽  
...  
Keyword(s):  
High Throughput ◽  
Bimetallic Catalysts ◽  
High Throughput Screening ◽  
Direct Synthesis ◽  
Catalytic Performance ◽  
Platinum Group Metals ◽  
Pt Catalyst ◽  
Electronic Density ◽  
Bimetallic Alloy ◽  
Screening Protocol

AbstractTo accelerate the discovery of materials through computations and experiments, a well-established protocol closely bridging these methods is required. We introduce a high-throughput screening protocol for the discovery of bimetallic catalysts that replace palladium (Pd), where the similarities in the electronic density of states patterns were employed as a screening descriptor. Using first-principles calculations, we screened 4350 bimetallic alloy structures and proposed eight candidates expected to have catalytic performance comparable to that of Pd. Our experiments demonstrate that four bimetallic catalysts indeed exhibit catalytic properties comparable to those of Pd. Moreover, we discover a bimetallic (Ni-Pt) catalyst that has not yet been reported for H2O2 direct synthesis. In particular, Ni61Pt39 outperforms the prototypical Pd catalyst for the chemical reaction and exhibits a 9.5-fold enhancement in cost-normalized productivity. This protocol provides an opportunity for the catalyst discovery for the replacement or reduction in the use of the platinum-group metals.

Aqueous-phase hydrogenation and hydrodeoxygenation of biomass-derived oxygenates with bimetallic catalysts

2014 ◽  
Vol 16 (2) ◽  
pp. 708 ◽  
Author(s):  
Jechan Lee ◽  
Yong Tae Kim ◽  
George W. Huber
Keyword(s):  
Aqueous Phase ◽  
Bimetallic Catalysts

scholarly journals Pd–Ni Bimetallic Nanoparticles Supported on Zro2 as an Efficient Catalyst for Suzuki–Miyaura Reactions

2018 ◽  
Vol 42 (8) ◽  
pp. 419-423
Author(s):  
Li-Jie Zhang ◽  
Xian Yao ◽  
Ying-xin Sun ◽  
Jia-wei Zhang ◽  
Chun Cai
Keyword(s):  
Reduction Method ◽  
Bimetallic Nanoparticles ◽  
Bimetallic Catalyst ◽  
Cross Coupling ◽  
Catalytic Performance ◽  
Coupling Reactions ◽  
Efficient Catalyst ◽  
Mild Conditions ◽  
Cross Coupling Reactions ◽  
Excellent Catalytic Performance

Pd–Ni bimetallic nanoparticles (BMNPs) supported on ZrO2 were prepared by an impregnation–reduction method. The BMNPs showed excellent catalytic performance in Suzuki carbon–carbon cross-coupling reactions and almost quantitative conversion of the substrates was obtained under mild conditions in the absence of ligand. The excellent catalytic performance of the bimetallic catalyst could be a result of the synergistic effect between the two metal components. The catalyst showed outstanding recyclability during the reaction process; no obvious decrease in catalytic performance was observed after five cycles.

In situ synthesis of Au–Pd bimetallic nanoparticles on amine-functionalized SiO2 for the aqueous-phase hydrodechlorination of chlorobenzene

RSC Advances ◽  
2014 ◽  
Vol 4 (89) ◽  
pp. 48254-48259 ◽  
Author(s):  
Xinkui Wang ◽  
Qinggang Liu ◽  
Zihui Xiao ◽  
Xiao Chen ◽  
Chuan Shi ◽  
...  
Keyword(s):  
Electronic Properties ◽  
Aqueous Phase ◽  
Reduction Method ◽  
Bimetallic Nanoparticles ◽  
In Situ Synthesis ◽  
High Dispersion ◽  
Amine Functionalized

The homogeneous Au–Pd NPs have been prepared through a facile in situ reduction method. The optimal AuPd1.0/SiO2 catalyst could complete the conversion of chlorobenzene due to the high dispersion and modified electronic properties of Pd.

Aqueous-phase synthesis of layered double hydroxide nanoplates as catalysts for the oxygen evolution reaction

2018 ◽  
Vol 47 (48) ◽  
pp. 17342-17348 ◽  
Author(s):  
Euiyoung Jung ◽  
Jae Kyeom Kim ◽  
Hyungsuk Choi ◽  
Min Hyung Lee ◽  
Taekyung Yu
Keyword(s):  
Aqueous Solution ◽  
Transition Metal ◽  
Oxygen Evolution ◽  
Layered Double Hydroxide ◽  
Aqueous Phase ◽  
Oxygen Evolution Reaction ◽  
Metal Salt ◽  
Catalytic Performance ◽  
Phase Synthesis ◽  
Double Hydroxide

Transition metal LDH nanoplates were synthesized by heating an aqueous solution containing a metal salt, PEG, and octylamine. The LDH nanoplates showed comparable electrochemical catalytic performance for the oxygen evolution reaction.

Preparation of Pd@Gr Composite Materials and Research on Catalytic Performance

2019 ◽  
Vol 944 ◽  
pp. 671-677
Author(s):  
Jin Feng Leng ◽  
Kang Wang ◽  
Chang Peng Xia
Keyword(s):  
Reduction Method ◽  
Chemical Reduction ◽  
Great Influence ◽  
Pd Nanoparticles ◽  
Catalytic Performance ◽  
Chemical Oxidation ◽  
Chemical Reduction Method ◽  
Graphene Surface ◽  
Oxidation Reduction

In this work, the preparation of graphene by chemical oxidation reduction method and a series of chemical reactions to get graphene oxide, with the preparation of graphene composites by simply chemical reduction method for the preparation of palladium/graphene composites. Through the chemical reduction method, the small size of Pd nanoparticles is acquired by controlling the content of reducing agent. The Pd nanoparticles on graphene surface is 10nm size and evenly distributed. Pd2+ adsorption on graphene surface and in situ were partially reduced to Pd to Pd2+ nanoparticles by the reducibility of graphene. In the process, the graphene was reduced to graphene and the final compound was thinner and more transparent than the pre-experiment oxide. The oxygen-containing functional groups on the surface of the graphene have influence to the nucleation and growth of metal nanoparticles and KI can control the morphology and size of nanoparticles. The particle size and dispersion uniformity have great influence on the catalytic performance of composites, the smaller particles have better catalytic performance. Keywords:palladium, graphene composites, nanoparticles

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