Direct synthesis of H2O2 over acid-treated Pd/C catalyst derived from a Pd-Co core-shell structure

Seungsun, Lee; Chung, Young-Min

doi:10.1016/j.cattod.2019.09.038

Cited by 16 publications

(8 citation statements)

References 39 publications

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“…The literatures report the following categories of catalyst: noble-metal-containing bimetallic systems, such as PdPt, PdAu, and PdAg; [35][36][37][38] those with uncommon metal components, such as PdTe, PdSn, PdIn, and PdGa; [12,[39][40][41][42][43][44] and transition-metal-based systems, such as PdCo, PdNi, and PdNiO. [45][46][47] Among them, there is no doubt that the PdAu bimetallic system is the most well-known and prominent composition. [13] Herein, however, we focus on nano-synthesis derived catalysts rather than general catalysts obtained by various depositional methods, since they have already been well described in previous review papers.…”

Section: Noble-metal Promoted Bimetallic Nanocatalystsmentioning

confidence: 99%

Advanced Development Strategy of Nano Catalyst and DFT Calculations for Direct Synthesis of Hydrogen Peroxide

Han

Lee

Hwang

et al. 2021

Advanced Energy Materials

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Hydrogen peroxide is a simple oxidizing agent. Its environmental benignness and effectiveness have led to a continuous increase in its use and production. Anthraquinone autoxidation (the AO process) is generally used to manufacture hydrogen peroxide (H2O2); however, this complex multi‐stage process releases large amounts of organic solvent into the environment and requires significant energy to operate. As a green and energy‐efficient production method, the direct synthesis of hydrogen peroxide (DSHP) from molecular hydrogen and oxygen can overcome the disadvantages of the AO process. However, DSHP has remained challenging until recently as severe mass‐transfer limitations and unavoidable side reactions result in insufficient selectivity for H2O2. However, beyond the conventional development methods for catalysts, recent advances in chemical and engineering fields can appreciably assist in the discovery of a “dream catalyst” for DSHP; high‐end computational methods and the facile surface‐controllable syntheses of nanocatalysts. This review addresses how a combination of density functional theory (DFT) calculations and nanocatalyst synthesis technologies lead to the development of high‐performance catalysts for DSHP, and provides guidelines on efficient methodologies for the development of catalysts through the use of cutting edge technologies.

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Section: Noble-metal Promoted Bimetallic Nanocatalystsmentioning

confidence: 99%

Advanced Development Strategy of Nano Catalyst and DFT Calculations for Direct Synthesis of Hydrogen Peroxide

Han

Lee

Hwang

et al. 2021

Advanced Energy Materials

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“…In recent years, Pd-based catalysts with various active compositions have been developed for the direct synthesis of H 2 O 2 , such as monometallic Pd, 4−11 bimetallic Pd−Au, 12−15 Pd−Pt, 16−20 Pd−Te, 21 Pd−Sn, 22 Pd−Al, 23 Pd−Zn, 24 Pd− Ce, 25 Pd−Co, 26 Pd−Pb, 27,28 and trimetallic Pd−Au−Pt. 29,30 The activity and H 2 O 2 selectivity of these catalysts strongly depend on the particle size, surface composition, and chemical state of Pd-based nanoparticles or clusters.…”

Section: ■ Introductionmentioning

confidence: 99%

Understanding the Role of Boron on the Interface Modulation of the Pd/TiO₂ Catalyst for Direct Synthesis of H₂O₂

Liu

Deng

et al. 2022

ACS Sustainable Chem. Eng.

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Rational modulation of metal−support interaction is an effective strategy to enhance the catalytic performance of a supported catalyst. Here, both the activity and selectivity for the direct H 2 O 2 synthesis from H 2 and O 2 are enhanced by the doping of boron atoms at the interface of Pd and TiO 2 . With boron doping, the selectivity and productivity of H 2 O 2 are remarkedly increased from 63.4% and 2.99 mol H 2 O 2 g Pd −1 h −1 to 80.1% and 3.65 mol H 2 O 2 g Pd −1 h −1 in a triphase semicontinuous reaction system at 10 °C and 0.1 MPa, respectively. The modulation effect of boron on the structure of Pd/TiO 2 was thoroughly studied by using multiple techniques such as HRTEM, XRD, XPS, and in situ DRIFTS. The doped boron atom almost has no effect on the particle size of Pd nanoparticle, but enhances the strong metal− support interaction (SMSI) between the Pd particle and TiO 2 , which results in a change of the Pd 2+ /Pd 0 ratio and surface Pd atoms configuration. An appropriate amount of boron atoms doped at the Pd−TiO 2 interface increases the ratio of Pd 2+ species, providing more active sites for the nondissociative activation of O 2 . Furthermore, the electronic effect between boron and Pd species increases the H 2 adsorption and activation, resulting in simultaneous increases in H 2 O 2 selectivity and productivity. This work highlights the significance of the modulation for metal−support interaction on direct H 2 O 2 synthesis, which also provides an effective and economic route by interface doping to improve the performance of supported heterogeneous catalysts.

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“…To inhibit the dissociation of O–O bonds, and increase the selectivity and productivity of H 2 O 2 , halide anions (Br − , F − , Cl − ) 21–24 and second metals (Au, 25–27 Ag, 28 Co, 29 Pt, 30 W, 31 etc. ) were used to modify Pd-based catalysts.…”

Section: Introductionmentioning

confidence: 99%

“…However, the dissociation of the O-O bonds of O 2 and H 2 O 2 molecules is also observed on the same crystal plane of Pd, which promotes the formation of H 2 O and decreases H 2 O 2 selectivity and productivity. 20 To inhibit the dissociation of O-O bonds, and increase the selectivity and productivity of H 2 O 2 , halide anions (Br À , F À , Cl À ) [21][22][23][24] and second metals (Au, [25][26][27] Ag, 28 Co, 29 Pt, 30 W, 31 etc.) were used to modify Pd-based catalysts.…”

Section: Introductionmentioning

confidence: 99%

Direct synthesis of H₂O₂ over Pd–M@HCS (M = Sn, Fe, Co, or Ni): effects of non-noble metal M on the electronic state and particle size of Pd

Zhou²,

Zhang

et al. 2022

New J. Chem.

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Direct synthesis of H2O2 over acid-treated Pd/C catalyst derived from a Pd-Co core-shell structure

Cited by 16 publications

References 39 publications

Advanced Development Strategy of Nano Catalyst and DFT Calculations for Direct Synthesis of Hydrogen Peroxide

Advanced Development Strategy of Nano Catalyst and DFT Calculations for Direct Synthesis of Hydrogen Peroxide

Understanding the Role of Boron on the Interface Modulation of the Pd/TiO₂ Catalyst for Direct Synthesis of H₂O₂

Direct synthesis of H₂O₂ over Pd–M@HCS (M = Sn, Fe, Co, or Ni): effects of non-noble metal M on the electronic state and particle size of Pd

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Direct synthesis of H2O2 over acid-treated Pd/C catalyst derived from a Pd-Co core-shell structure

Cited by 16 publications

References 39 publications

Advanced Development Strategy of Nano Catalyst and DFT Calculations for Direct Synthesis of Hydrogen Peroxide

Advanced Development Strategy of Nano Catalyst and DFT Calculations for Direct Synthesis of Hydrogen Peroxide

Understanding the Role of Boron on the Interface Modulation of the Pd/TiO2 Catalyst for Direct Synthesis of H2O2

Direct synthesis of H2O2 over Pd–M@HCS (M = Sn, Fe, Co, or Ni): effects of non-noble metal M on the electronic state and particle size of Pd

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Understanding the Role of Boron on the Interface Modulation of the Pd/TiO₂ Catalyst for Direct Synthesis of H₂O₂

Direct synthesis of H₂O₂ over Pd–M@HCS (M = Sn, Fe, Co, or Ni): effects of non-noble metal M on the electronic state and particle size of Pd