Palladium supported on an acidic metal–organic framework as an efficient catalyst in selective aerobic oxidation of alcohols

Chen, Gongzhou; Wu, Shijian; Liu, Hongli; Jiang, Huanfeng; Li, Yingwei

doi:10.1039/c2gc36618e

Cited by 150 publications

(92 citation statements)

References 49 publications

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“…In the oxidation of cinnamyl alcohol, the Pd/MIL-101 exhibited nearly fourfold greater activity than the Pd nanoparticles on active carbon, with 99% selectivity for producing benzaldehyde. [ 101 ] It is known that double bonds can be oxidized by O 2 in the present of Pd nanocrystals. [ 102 ] In this Pd/MOF system, the C=C double bond in cinnamyl alcohol was fully protected, making an important contribution to the selectivity of organic reactions.…”

Section: Progress Reportmentioning

confidence: 99%

Palladium‐Based Nanomaterials: A Platform to Produce Reactive Oxygen Species for Catalyzing Oxidation Reactions

et al. 2015

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Oxidation reactions by molecular oxygen (O2 ) over palladium (Pd)-based nanomaterials are a series of processes crucial to the synthesis of fine chemicals. In the past decades, investigations of related catalytic materials have mainly been focused on the synthesis of Pd-based nanomaterials from the angle of tailoring their surface structures, compositions and supporting materials, in efforts to improve their activities in organic reactions. From the perspective of rational materials design, it is imperative to address the fundamental issues associated with catalyst performance, one of which should be oxygen activation by Pd-based nanomaterials. Here, the fundamentals that account for the transformation from O2 to reactive oxygen species over Pd, with a focus on singlet O2 and its analogue, are introduced. Methods for detecting and differentiating species are also presented to facilitate future fundamental research. Key factors for tuning the oxygen activation efficiencies of catalytic materials are then outlined, and recent developments in Pd-catalyzed oxygen-related organic reactions are summarized in alignment with each key factor. To close, we discuss the challenges and opportunities for photocatalysis research at this unique intersection as well as the potential impact on other research fields.

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Section: Progress Reportmentioning

confidence: 99%

Palladium‐Based Nanomaterials: A Platform to Produce Reactive Oxygen Species for Catalyzing Oxidation Reactions

et al. 2015

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“…We didn't detect any benzoic acid in this reaction, which agrees with a previous report. 53 Considering the blank test and pristine MOFs show negligible activity, we actually tuned the oxidation capacity of Pd NCs using isoreticular MOFs. Bearing these findings in mind, we sought to investigate the Pd NCs-MOFs interaction, which may account for the different product distribution.…”

Section: Resultsmentioning

confidence: 99%

“…49,50 The EXAFS data were fitted in R-space using the Artemis program from the same package, with theoretical models constructed from FEFF6. [51][52][53] All the EXAFS data fitting were performed with a k 3 weighting in R space. Typical procedure for the tandem reaction.…”

Section: Discussionmentioning

confidence: 99%

“…For example, transition metal complexes can be immobilized in bipyridyl and porphyrin-based MOFs and afford single-site catalysts with enhanced activity in comparison to homogenous counterparts. 25,[52][53][54] Metal nanoparticles have also been widely embedded in MOFs (designated as NPs@MOF). 55 NPs@MOFs systems are of particular interest in catalysis because of their rationally designed structures, ease to modify the pore environment, and possible electronic interaction between the NPs and frameworks, 56 which is of significant importance for controlling the growth of NPs and leading to enhanced activities and selectivies.…”

Section: Mofs As Scaffold For the Catalytic Speciesmentioning

confidence: 99%

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Active sites engineering of metal-organic frameworks for heterogeneous catalysis

2016

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“…However, MOF materials are still limited in electrochemical applications due to their substantially weaker material properties such as electronic conductivity and electrocatalytic ability. Therefore, heterogeneous materials with multi-nanocomponents have been proposed [17]. Recently, Hosseini et al have prepared Au-SH-SiO 2 nanoparticles immobilized on Cubased MOFs to fabricate hydrazine and l-cysteine electrochemical sensors [18,19].…”

Section: Introductionmentioning

confidence: 99%

Cu(II)‐Based MOF Immobilized on Multiwalled Carbon Nanotubes: Synthesis and Application for Nonenzymatic Detection of Hydrogen Peroxide with High Sensitivity

Zhou

Zhang

et al. 2014

Electroanalysis

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Cu(II)‐based MOF (Cu‐bipy‐BTC, bipy=2,2′‐bipyridine, BTC=1,3,5‐tricarboxylate) was synthesized and immobilized on multiwalled carbon nanotubes. The prepared composite was characterized by scanning electron microscopy (SEM), X‐ray diffraction (XRD), X‐ray photoelectron spectra (XPS) and IR spectra. Then the material was modified onto the surface of a glassy carbon electrode, and showed a couple of well‐defined redox peaks in a phosphate buffer solution (pH 6.0), ascribed to the redox process of CuII/I in the Cu‐bipy‐BTC. The modified electrode was then applied to fabricate a non‐enzymatic hydrogen peroxide biosensor. The sensor showed good electrocatalytic activity toward the reduction of hydrogen peroxide with a wide linear range (3–70 µmol L−1 and 70–30000 µmol L−1) and a detection limit of 0.46 µmol L−1, as well as good stability and repeatability. In addition, the sensor has been successfully applied to determine hydrogen peroxide in water samples with good accuracy. Thus, the Cu‐bipy‐BTC/MWCNTs composite has great potential for applications in electrochemical sensors.

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Palladium supported on an acidic metal–organic framework as an efficient catalyst in selective aerobic oxidation of alcohols

Cited by 150 publications

References 49 publications

Palladium‐Based Nanomaterials: A Platform to Produce Reactive Oxygen Species for Catalyzing Oxidation Reactions

Palladium‐Based Nanomaterials: A Platform to Produce Reactive Oxygen Species for Catalyzing Oxidation Reactions

Active sites engineering of metal-organic frameworks for heterogeneous catalysis

Cu(II)‐Based MOF Immobilized on Multiwalled Carbon Nanotubes: Synthesis and Application for Nonenzymatic Detection of Hydrogen Peroxide with High Sensitivity

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