Rational Localization of Metal Nanoparticles in Yolk–Shell MOFs for Enhancing Catalytic Performance in Selective Hydrogenation of Cinnamaldehyde

ChemSusChem ◽  
2019 ◽  
Vol 13 (1) ◽  
pp. 205-211 ◽  
Author(s):  
Awu Zhou ◽  
Yibo Dou ◽  
Jian Zhou ◽  
Jian‐Rong Li
Keyword(s):  
Metal Nanoparticles ◽  
Selective Hydrogenation ◽  
Catalytic Performance

Effects of impregnation solvent and reduction temperature on the catalytic performance of Pd/Al2O3 in the selective hydrogenation of 1,3-butadiene

2011 ◽  
Vol 103 (2) ◽  
pp. 405-417 ◽  
Author(s):  
Kanda Pattamakomsan ◽  
Francisco Jose Cadete Santos Aires ◽  
Kongkiate Suriye ◽  
Joongjai Panpranot
Keyword(s):  
Selective Hydrogenation ◽  
Catalytic Performance ◽  
Reduction Temperature

Noble metal nanoparticles supported on titanate nanotubes as catalysts for selective hydrogenation of nitroarenes

2021 ◽  
Author(s):  
Krishnamoorthy Shanmugaraj ◽  
Tatiana M. Bustamante ◽  
J.N. Díaz de León ◽  
Radhamanohar Aepuru ◽  
Ramalinga Viswanathan Mangalaraja ◽  
...  
Keyword(s):  
Metal Nanoparticles ◽  
Noble Metal ◽  
Selective Hydrogenation ◽  
Titanate Nanotubes ◽  
Noble Metal Nanoparticles

scholarly journals Polyethyleneimine-Oleic Acid Micelles-Stabilized Palladium Nanoparticles as Highly Efficient Catalyst to Treat Pollutants with Enhanced Performance

Polymers ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1890
Author(s):  
Xiang Lai ◽  
Xuan Zhang ◽  
Shukai Li ◽  
Jie Zhang ◽  
Weifeng Lin ◽  
...  
Keyword(s):  
Oleic Acid ◽  
Metal Nanoparticles ◽  
Noble Metal ◽  
Palladium Nanoparticles ◽  
Human Life ◽  
Catalytic Performance ◽  
Water Soluble ◽  
Noble Metal Nanoparticles ◽  
Hydrodynamic Diameter ◽  
Efficient Catalyst

Water soluble organic molecular pollution endangers human life and health. It becomes necessary to develop highly stable noble metal nanoparticles without aggregation in solution to improve their catalytic performance in treating pollution. Polyethyleneimine (PEI)-based stable micelles have the potential to stabilize noble metal nanoparticles due to the positive charge of PEI. In this study, we synthesized the amphiphilic PEI-oleic acid molecule by acylation reaction. Amphiphilic PEI-oleic acid assembled into stable PEI-oleic acid micelles with a hydrodynamic diameter of about 196 nm and a zeta potential of about 34 mV. The PEI-oleic acid micelles-stabilized palladium nanoparticles (PO-PdNPsn) were prepared by the reduction of sodium tetrachloropalladate using NaBH4 and the palladium nanoparticles (PdNPs) were anchored in the hydrophilic layer of the micelles. The prepared PO-PdNPsn had a small size for PdNPs and good stability in solution. Noteworthily, PO-PdNPs150 had the highest catalytic activity in reducing 4-nitrophenol (4-NP) (Knor = 18.53 s−1mM−1) and oxidizing morin (Knor = 143.57 s−1M−1) in aqueous solution than other previous catalysts. The enhanced property was attributed to the improving the stability of PdNPs by PEI-oleic acid micelles. The method described in this report has great potential to prepare many kinds of stable noble metal nanoparticles for treating aqueous pollution.

Influence of Pt Size and CeO2 Morphology at the Pt-CeO2 Interface in CO Oxidation

2021 ◽  
Author(s):  
Sinmyung Yoon ◽  
Hyunwoo Ha ◽  
Jihun Kim ◽  
Eonu Nam ◽  
Mi Yoo ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Metal Nanoparticles ◽  
Rational Design ◽  
Catalytic Performance ◽  
Electronic Interactions ◽  
Oxide Supports ◽  
Metal Support ◽  
Metal Support Interactions

Understanding the inherent catalytic nature of the interface between metal nanoparticles (NPs) and oxide supports enables the rational design of metal-support interactions for high catalytic performance. Electronic interactions at the...

Cobalt–graphene nanomaterial as an efficient catalyst for selective hydrogenation of 5-hydroxymethylfurfural into 2,5-dimethylfuran

2019 ◽  
Vol 9 (6) ◽  
pp. 1329-1333 ◽  
Author(s):  
Fan Yang ◽  
Jingbo Mao ◽  
Shenmin Li ◽  
Jingmei Yin ◽  
Jinxia Zhou ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Selective Hydrogenation ◽  
Catalytic Performance ◽  
Efficient Catalyst ◽  
Reduced Graphene

The synergy of single Co atoms/Co clusters and CoOx nanoparticles, as well as reduced graphene oxide, leads to superior catalytic performance.

Efficient and selective hydrogenation of benzonitrile to benzylamine: improvement on catalytic performance and stability in a trickle-bed reactor

2017 ◽  
Vol 41 (10) ◽  
pp. 3758-3765 ◽  
Author(s):  
Chengyong Dai ◽  
Shuya Zhu ◽  
Xueguang Wang ◽  
Chunlei Zhang ◽  
Wenxiang Zhang ◽  
...  
Keyword(s):  
Selective Hydrogenation ◽  
Catalytic Performance ◽  
Trickle Bed Reactor ◽  
Trickle Bed

The hydrogenation of benzonitrile with a high benzylamine yield of 86% is accomplished over a Pd/γ-Al2O3 catalyst in a trickle-bed reactor.

The impacts of nanotechnology on catalysis by precious metal nanoparticles

2012 ◽  
Vol 1 (1) ◽  
pp. 31-56 ◽  
Author(s):  
Rongchao Jin
Keyword(s):  
Metal Nanoparticles ◽  
Precious Metal ◽  
Metallic Nanoparticles ◽  
Active Sites ◽  
Active Surface ◽  
Catalytic Performance ◽  
Solution Phase ◽  
Future Research ◽  
Metal Support ◽  
Effect Of Surface

AbstractThis review article focuses on the impacts of recent advances in solution phase precious metal nanoparticles on heterogeneous catalysis. Conventional nanometal catalysts suffer from size polydispersity. The advent of nanotechnology has significantly advanced the techniques for preparing uniform nanoparticles, especially in solution phase synthesis of precious metal nanoparticles with excellent control over size, shape, composition and morphology, which have opened up new opportunities for catalysis. This review summarizes some recent catalytic research by using well-defined nanoparticles, including shape-controlled nanoparticles, high index-faceted polyhedral nanocrystals, nanostructures of different morphology (e.g., core-shell, hollow, etc.), bi- and multi-metallic nanoparticles, as well as atomically precise nanoclusters. Such well-defined nanocatalysts provide many exciting opportunities, such as identifying the types of active surface atoms (e.g., corner and edge atoms) in catalysis, the effect of surface facets on catalytic performance, and obtaining insight into the effects of size-induced electron energy quantization in ultra-small metal nanoparticles on catalysis. With well-defined metal nanocatalysts, many fundamentally important issues are expected to be understood much deeper in future research, such as the nature of the catalytic active sites, the metal-support interactions, the effect of surface atom arrangement, and the atomic origins of the structure-activity and the structure-selectivity relationships.

scholarly journals Metal Nanoparticles as Green Catalysts

Materials ◽  
2019 ◽  
Vol 12 (21) ◽  
pp. 3602 ◽  
Author(s):  
Neel Narayan ◽  
Ashokkumar Meiyazhagan ◽  
Robert Vajtai
Keyword(s):  
Catalytic Activity ◽  
Composite Materials ◽  
Green Synthesis ◽  
Metal Nanoparticles ◽  
Surface Area ◽  
Significant Role ◽  
High Surface ◽  
High Surface Area ◽  
Catalytic Performance ◽  
Materials Development

Nanoparticles play a significant role in various fields ranging from electronics to composite materials development. Among them, metal nanoparticles have attracted much attention in recent decades due to their high surface area, selectivity, tunable morphologies, and remarkable catalytic activity. In this review, we discuss various possibilities for the synthesis of different metal nanoparticles; specifically, we address some of the green synthesis approaches. In the second part of the paper, we review the catalytic performance of the most commonly used metal nanoparticles and we explore a few roadblocks to the commercialization of the developed metal nanoparticles as efficient catalysts.

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