scholarly journals Cinnamaldehyde hydrogenation using Au–Pd catalysts prepared by sol immobilisation

2018 ◽  
Vol 8 (6) ◽  
pp. 1677-1685 ◽  
Author(s):  
Stefano Cattaneo ◽  
Simon J. Freakley ◽  
David J. Morgan ◽  
Meenakshisundaram Sankar ◽  
Nikolaos Dimitratos ◽  
...  
Keyword(s):  
Catalytic Hydrogenation ◽  
Pd Nanoparticles ◽  
Catalytic Performance ◽  
Reaction Conditions ◽  
Pd Catalysts ◽  
Cinnamaldehyde Hydrogenation

We report the catalytic performance of Au–Pd nanoparticles prepared via a sol immobilisation technique for the catalytic hydrogenation of cinnamaldehyde under mild reaction conditions.

scholarly journals Ultrafine Pd Nanoparticles Supported on Soft Nitriding Porous Carbon for Hydrogen Production from Hydrolytic Dehydrogenation of Dimethyl Amine-Borane

Nanomaterials ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 1612
Author(s):  
Zhaoyu Wen ◽  
Qiong Fu ◽  
Jie Wu ◽  
Guangyin Fan
Keyword(s):  
Porous Carbon ◽  
High Performance ◽  
Hydrogen Generation ◽  
Pd Nanoparticles ◽  
Catalytic Performance ◽  
Pd Catalysts ◽  
Nano Catalyst ◽  
Dimethyl Amine ◽  
Catalytic Hydrogen ◽  
Hydrolysis Of

Simple and efficient synthesis of a nano-catalyst with an excellent catalytic property for hydrogen generation from hydrolysis of dimethyl amine-borane (DMAB) is a missing piece. Herein, effective and recycled palladium (Pd) nanoparticles (NPs) supported on soft nitriding porous carbon (NPC) are fabricated and applied for DMAB hydrolysis. It is discovered that the soft nitriding via a low-temperature urea-pretreatment induces abundant nitrogen-containing species on the NPC support, thus promoting the affinity of the Pd precursor and hindering the agglomeration of formed Pd NPs onto the NPC surface during the preparation process. Surface-clean Pd NPs with a diameter of sub-2.0 nm deposited on the NPC support (Pd/NPC) exhibit an outstanding catalytic performance with a turnover frequency (TOF) of 2758 h−1 toward DMAB hydrolysis, better than many previous reported Pd-based catalysts. It should be emphasized that the Pd/NPC also possesses a good stability without an obvious decrease in catalytic activity for DMAB hydrolysis in five successive recycling runs. This study provides a facile but efficient way for preparing high-performance Pd catalysts for catalytic hydrogen productions.

Recyclable catalyst for catalytic hydrogenation of phenylacetylene by coupling Pd nanoparticles with highly compressible graphene aerogels

RSC Advances ◽  
2014 ◽  
Vol 4 (104) ◽  
pp. 59977-59980 ◽  
Author(s):  
Xu Zhang ◽  
Zhiyu Wang ◽  
Shuang Li ◽  
Chunlei Wang ◽  
Jieshan Qiu
Keyword(s):  
Graphene Oxide ◽  
Catalytic Hydrogenation ◽  
Chemical Reduction ◽  
Pd Nanoparticles ◽  
Catalytic Performance ◽  
Hydrogenation Reaction ◽  
Recyclable Catalyst ◽  
Graphene Aerogels ◽  
Excellent Catalytic Performance

Highly compressible graphene aerogels were made by chemical reduction of graphene oxide with HI, which act as recyclable catalyst to exhibit excellent catalytic performance towards selective semi-hydrogenation reaction after loading Pd nanoparticles.

Pd nanoparticles stabilized with phosphine-functionalized porous ionic polymer for efficient catalytic hydrogenation of nitroarenes in water

2020 ◽  
Vol 44 (9) ◽  
pp. 3681-3689 ◽  
Author(s):  
Yizhu Lei ◽  
Zaifei Chen ◽  
Guosong Lan ◽  
Renshu Wang ◽  
Xiao-Yu Zhou
Keyword(s):  
Catalytic Activity ◽  
Catalytic Hydrogenation ◽  
Palladium Nanoparticles ◽  
Pd Nanoparticles ◽  
Catalytic Performance ◽  
High Catalytic Activity ◽  
Ionic Polymer ◽  
Electron Donation ◽  
Nano Size ◽  
Excellent Catalytic Performance

Small palladium nanoparticles stabilized with phosphine-functionalized PIP displayed high catalytic activity for nitroarenes hydrogenation. Nano-size Pd particles, electron-donation effect of phosphine ligand, and surface wettability account for its excellent catalytic performance.

A new cobalt metal–organic framework as a substrate for Pd nanoparticles applied in high-efficiency nitro phenol degradation and cinnamaldehyde hydrogenation

2020 ◽  
Vol 49 (4) ◽  
pp. 1191-1199 ◽  
Author(s):  
Zhida Liu ◽  
Liangmin Ning ◽  
Kaiyuan Wang ◽  
Lixi Feng ◽  
Wen Gu ◽  
...  
Keyword(s):  
High Efficiency ◽  
Metal Organic Framework ◽  
Phenol Degradation ◽  
Pd Nanoparticles ◽  
Research Direction ◽  
Catalytic Performance ◽  
Cobalt Metal ◽  
Cinnamaldehyde Hydrogenation ◽  
Metal Organic ◽  
Metal Materials

In recent years, attributed to the excellent catalytic performance of precious metal materials, metal nanoparticles@MOF catalyst has been a popular research direction.

Synthesis of modified carbon nanotube-supported Pd and the catalytic performance for hydrodehalogenation of aryl halides

2013 ◽  
Vol 91 (5) ◽  
pp. 307-314 ◽  
Author(s):  
Yuandong Xu ◽  
Long Chen ◽  
Xiaolai Wang
Keyword(s):  
Surface Functionalization ◽  
Pd Nanoparticles ◽  
Catalytic Performance ◽  
Surface Oxide ◽  
Aryl Halides ◽  
Optimal Conditions ◽  
Reaction Conditions ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes ◽  
Supported Pd

The effects of surface functionalization on the deposition of Pd nanoparticles on multi-walled carbon nanotubes (CNTs) have been studied. Two methods were used for the functionalization of CNTs: one employed a 1:1 (v/v) mixture of concentrated H2SO4/HNO3, sonicated at RT; the other employed a 3:1 (v/v) mixture of concentrated H2SO4/HNO3, sonicated at 60 °C. A large number of surface oxide groups were introduced on the surface of functionalized CNTs, especially in strong oxidation power (H2SO4/HNO3 = 3:1, 60 °C). The dispersion of Pd nanoparticles on CNTs was found to depend on the amount of surface oxide groups, with larger amounts of surface oxide groups resulting in higher dispersion of Pd nanoparticles. The effects of CNT surface functionalization on the performance of Pd/CNTs catalysts were studied, and the reaction conditions optimized, using the hydrodebromination of bromobenzene as model reaction. Under optimal conditions, the hydrodehalogenation of various aryl halides were tested over Pd/CNTs catalysts.

Efficient ligand-free Hiyama cross-coupling reaction catalyzed by functionalized SBA-15-supported Pd nanoparticles

2014 ◽  
Vol 16 (5) ◽  
pp. 2706-2712 ◽  
Author(s):  
Shao-Hsien Huang ◽  
Chun-Hsia Liu ◽  
Chia-Min Yang
Keyword(s):  
Coupling Reaction ◽  
Cross Coupling ◽  
Pd Nanoparticles ◽  
Reaction Conditions ◽  
Pd Catalysts ◽  
Cross Coupling Reaction ◽  
Supported Pd Catalysts ◽  
Ligand Free ◽  
Recyclable Catalysts ◽  
Supported Pd

Functionalized SBA-15-supported Pd catalysts were prepared as efficient and recyclable catalysts for ligand-free Hiyama cross-coupling under relatively mild reaction conditions.

A Pickering emulsion of a bifunctional interface prepared from Pd nanoparticles supported on silicane-modified graphene oxide: an efficient catalyst for water-mediated catalytic hydrogenation

2020 ◽  
Vol 10 (4) ◽  
pp. 1096-1105 ◽  
Author(s):  
Bing Xue ◽  
Tongchun Xu ◽  
Dongsheng Li ◽  
Jie Xu ◽  
Yongxin Li ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Catalytic Hydrogenation ◽  
Pd Nanoparticles ◽  
Pickering Emulsion ◽  
Catalytic Performance ◽  
Efficient Catalyst ◽  
Modified Graphene Oxide ◽  
Modified Graphene

A Pickering emulsion of bifunctional interface that prepared by Pd nanoparticles supported on silicane-modified graphene oxide exhibited high catalytic performance for hydrogenation of CAL.

Tuning the catalytic performance for the semi-hydrogenation of alkynols by selectively poisoning the active sites of Pd catalysts

2019 ◽  
Vol 21 (15) ◽  
pp. 4143-4151 ◽  
Author(s):  
Shanjun Mao ◽  
Bowen Zhao ◽  
Zhe Wang ◽  
Yutong Gong ◽  
Guofeng Lü ◽  
...  
Keyword(s):  
Active Sites ◽  
Catalytic Performance ◽  
Pd Catalysts ◽  
Fine Chemical

Semi-hydrogenation of alkynols to alkenols with Pd-based catalysts is of great significance in fine chemical industries.

scholarly journals Ruling Factors in Cinnamaldehyde Hydrogenation: Activity and Selectivity of Pt-Mo Catalysts

Nanomaterials ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 362
Author(s):  
Marta Stucchi ◽  
Maela Manzoli ◽  
Filippo Bossola ◽  
Alberto Villa ◽  
Laura Prati
Keyword(s):  
Photoelectron Spectroscopy ◽  
Pt Nanoparticles ◽  
Carbon Support ◽  
Catalytic Performance ◽  
Acid Sites ◽  
Hydrogenation Catalysts ◽  
Cinnamaldehyde Hydrogenation ◽  
Transmission Electron ◽  
Heat Treated ◽  
Heating Treatment

To obtain selective hydrogenation catalysts with low noble metal content, two carbon-supported Mo-Pt bimetallic catalysts have been synthesized from two different molybdenum precursors, i.e., Na2MoO4 and (NH4)6Mo7O24. The results obtained by X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM) combined with the presence and strength of acid sites clarified the different catalytic behavior toward cinnamaldehyde hydrogenation. After impregnating the carbon support with Mo precursors, each sample was used either as is or treated at 400 °C in N2 flow, as support for Pt nanoparticles (NPs). The heating treatment before Pt deposition had a positive effect on the catalytic performance. Indeed, TEM analyses showed very homogeneously dispersed Pt NPs only when they were deposited on the heat-treated Mo/C supports, and XPS analyses revealed an increase in both the exposure and reduction of Pt, which was probably tuned by different MoO3/MoO2 ratios. Moreover, the different acid properties of the catalysts resulted in different selectivity.

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