Effect of cesium ion on the synthesis and catalytic properties with FeCo Prussian blue analogue

Guo, Sheng‐rong; Liang, Yanling; Tricard, Simon; Wang, Ning; Feng, Lei; He, Sifa; Zheng, Peng; Zhao, Jianxi; Fang, Jian

doi:10.1016/j.cplett.2018.09.003

Cited by 12 publications

(5 citation statements)

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“…By substituting the value of the slope in Figure S14, the activation energy of the reaction was determined to be 61.34 kJ/mol. This value is comparable to the previously reported value that was from catalytic systems that used acetonitrile, the same solvent as our catalytic experiment. − …”

Section: Resultssupporting

confidence: 91%

Subnano-FeO_x Clusters Anchored in an Ultrathin Amorphous Al₂O₃ Nanosheet for Styrene Epoxidation

et al. 2021

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The development of low-cost, high-performance catalysts at the atomic level has drawn scientists’ attention due to the high atom efficiency, unique structure, and potentially high catalytic selectivity. Among the atomically tailored catalysts, nanoclusters are of particular interest because they represent an underexplored medium state between isolated single atoms and typical nanoparticles. In this study, we report a wet-chemistry approach to synthesize highly dispersed subnano-FeO x clusters anchored on an ultrathin amorphous Al2O3 nanosheet (or Al2O3–FeO x nanosheet) and its excellent catalytic performance for selective conversion of styrene to styrene oxide. The reasons for the high catalytic performance of the Al2O3–FeO x nanosheet are 2-fold. One is that the unsaturated and amorphous nature of the Fe atoms in the subnano-FeO x clusters promotes the adsorption of styrene onto the catalytic sites of FeO x clusters for epoxidation. The other is that the amorphous Al2O3 nanosheet prevents the aggregation of catalytic FeO x clusters during the epoxidation reaction because its defective structure immobilizes the FeO x clusters.

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Section: Resultssupporting

confidence: 91%

Subnano-FeO_x Clusters Anchored in an Ultrathin Amorphous Al₂O₃ Nanosheet for Styrene Epoxidation

et al. 2021

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“…18 Density functional theory (DFT) calculations demonstrated that the adsorption of the oxidant on catalysts plays a significant role. 19,20 Therefore, it is essential to study the improvement of the catalytic properties of FeCo DMC.…”

Section: Introductionmentioning

confidence: 99%

“…Interestingly, the mixed metal oxidation states in the DMC framework can provide rich redox-active sites for application in various redox reactions. − Recently, our group has found that FeCo DMC exhibits good catalytic activity on styrene epoxidation . Density functional theory (DFT) calculations demonstrated that the adsorption of the oxidant on catalysts plays a significant role. , Therefore, it is essential to study the improvement of the catalytic properties of FeCo DMC. Experiments on adsorption kinetics are also essential to further discuss the mechanism of adsorption …”

Section: Introductionmentioning

confidence: 99%

Enhancement of the Catalytic Activity of Double Metal Cyanides for the Oxidation of Styrene by the Presence of Included Alcohols

et al. 2022

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In recent years, people have focused on the development of simple and efficient heterogeneous catalysts for the styrene epoxidation reaction. In this work, a FeCo double metal cyanide (DMC) was modified with C1 to C6 linear alcohols, and the prepared materials were used to catalyze the reaction of styrene epoxidation in various solvents. It is noteworthy that the styrene conversion is mainly affected by modification with alcohols, while the selectivity in styrene oxide (SO) is obviously influenced by the solvent. FeCo DMC along with MeOH exhibits the best catalytic performance, with a conversion rate of 96% and a SO selectivity of 86%, in N,N-dimethylformamide (DMF) solvent. Various physical and chemical methods were used to analyze the structures and compositions of the materials. To clarify the mechanism of the improvement, we set up an original approach to investigate the kinetics of the adsorption process between the oxidant and the catalyst, using isothermal titration calorimetry (ITC). The obtained results illustrate that the adsorption process of the oxidant on the surface of FeCo DMC can be dramatically promoted by the presence of MeOH. Such a difference in adsorption thus explains the significant improvement of its catalytic activity by modification with MeOH. This study thus provides a new fundamental understanding of DMC catalysts for the styrene epoxidation reaction.

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“…32 Apart from Prussian blue and PBAs constructed with [Fe(CN) 6 ] x− , a PBA based on [Co(CN) 6 ] x− is another attractive candidate that has been intensely utilized in diverse applications such as catalysts and batteries. 33,34 The summary of the recent advances of PBAs and their applications brings to light two points: a comprehensive study on PBAs is lacking, and currently used PBAs are formed by general transition metals, although some rarer types of PBAs have been documented. 35 In addition to conventional transition metals, such as Fe, Mn, Cu, and Zn, other metals provide options for constructing PBAs: e.g., lanthanide elements with special electronic configurations (shielded f orbital), Mo (an overlooked transition metal), and non-transition-metal ions (Ga, Al, and Bi).…”

Section: ■ Introductionmentioning

confidence: 99%

“…Furthermore, Ming et al reported that Prussian blue crystal growth with the assistance of polyvinylpyrrolidone (PVP) showed an oriented growth of Prussian blue nanoparticles . Apart from Prussian blue and PBAs constructed with [Fe(CN) 6 ] x − , a PBA based on [Co(CN) 6 ] x − is another attractive candidate that has been intensely utilized in diverse applications such as catalysts and batteries. , …”

Section: Introductionmentioning

confidence: 99%

Tailorable Topologies for Selectively Controlling Crystals of Expanded Prussian Blue Analogues

Zhang

Lee

Noh

et al. 2019

Crystal Growth & Design

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Chemical manipulations of Prussian blues and Prussian blue analogues (PBAs) beyond first-row transition-metal cations have remained quite preliminary to this day. The presented report demonstrates the feasibility of using different types of cations, including general transition-metal ions, p region elements in the periodic table, lanthanide elements, and overlooked cations such as Al3+ and Mo3+ to build unique PBAs. A systematic study of the different types of PBAs is provided in terms of physical and chemical features by means of transition electron microscopy, X-ray photoelectron spectroscopy, and X-ray absorption near-edge structure. Diverse PBAs can be synthesized with different morphologies. The [Ni(CN)4]2–-based PBAs mainly exhibited layered products owing to their 4-fold-coordinated anions. The 6-fold-coordinated anion-based PBAs displayed cubic or distorted cubic crystal structures following the same method of ion arrangements with conventional [Fe(CN)6]2‑/3–-based PBAs. Furthermore, bonding conditions are greatly affected by the introduced cations. In addition, the PBAs constructed using cations with more unpaired free electrons displayed intense paramagnetic performance. This study provides discoveries regarding innovative PBAs and gives new insights into materials exploration for different target applications.

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Effect of cesium ion on the synthesis and catalytic properties with FeCo Prussian blue analogue

Cited by 12 publications

References 50 publications

Subnano-FeO_x Clusters Anchored in an Ultrathin Amorphous Al₂O₃ Nanosheet for Styrene Epoxidation

Subnano-FeO_x Clusters Anchored in an Ultrathin Amorphous Al₂O₃ Nanosheet for Styrene Epoxidation

Enhancement of the Catalytic Activity of Double Metal Cyanides for the Oxidation of Styrene by the Presence of Included Alcohols

Tailorable Topologies for Selectively Controlling Crystals of Expanded Prussian Blue Analogues

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Effect of cesium ion on the synthesis and catalytic properties with FeCo Prussian blue analogue

Cited by 12 publications

References 50 publications

Subnano-FeOx Clusters Anchored in an Ultrathin Amorphous Al2O3 Nanosheet for Styrene Epoxidation

Subnano-FeOx Clusters Anchored in an Ultrathin Amorphous Al2O3 Nanosheet for Styrene Epoxidation

Enhancement of the Catalytic Activity of Double Metal Cyanides for the Oxidation of Styrene by the Presence of Included Alcohols

Tailorable Topologies for Selectively Controlling Crystals of Expanded Prussian Blue Analogues

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Subnano-FeO_x Clusters Anchored in an Ultrathin Amorphous Al₂O₃ Nanosheet for Styrene Epoxidation

Subnano-FeO_x Clusters Anchored in an Ultrathin Amorphous Al₂O₃ Nanosheet for Styrene Epoxidation