Enhanced performance of supported Pd-Pt bimetallic catalysts prepared by modified electroless deposition for butane dehydrogenation

Saxena, Rishabh; De, Mahuya

doi:10.1016/j.apcata.2020.117933

Cited by 17 publications

(15 citation statements)

References 69 publications

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“…The binding energies shift positively with the increasing concentration of the extract, which might be due to the modification of the PVA surface. This could be ascribed to the strong interaction between the increasing concentration of extract and PVA . The addition of extract resulted in a change in the carbon–oxygen ratios as observed from the survey plots (Figure S1).…”

Section: Results and Discussionmentioning

confidence: 78%

“…This could be ascribed to the strong interaction between the increasing concentration of extract and PVA. 35 The addition of extract resulted in a change in the carbon–oxygen ratios as observed from the survey plots ( Figure S1 ). The atomic percentage of carbon increased from 62.3% in PP to 62.6, 65.4, and 71% in PE1, PE5, and PE10, respectively ( Table S2 ).…”

Section: Results and Discussionmentioning

confidence: 88%

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Antioxidant-Incorporated Poly(vinyl alcohol) Coating: Preparation, Characterization, and Influence on Ripening of Green Bananas

2022

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In this study, the gallic acid (antioxidant)-rich leaf extract of Ficus auriculata was incorporated into poly(vinyl alcohol) (PVA) and utilized as a coating to delay the ripening of green bananas. The films exhibited low opacity of 0.86 ± 0.014 for pure PVA (PP) and 0.92 ± 0.019, 0.99 ± 0.020, and 1.18 ± 0.029 for PVA + 1% extract (PE1), PVA + 5% extract (PE5), and PVA + 10% extract (PE10), respectively, indicating excellent transparency. The weight loss was higher in the uncoated group than in any coated fruits. The reduction in titratable acidity and the increase in total soluble sugars were slower in all of the coated samples as compared to the uncoated ones. The fruits without any treatment attained complete maturity on the ninth day where the ion leakage was 85.61 ± 2.33% while that of PP was 56.36 ± 2.95% and those of PE1, PE5, and PE10 remained below 30%. The coated samples showed better retention and consequently slower degradation of chlorophyll. The fruits coated with pure PVA as well as 10% extract-incorporated PVA remained acceptable till day 15, while the ones with 1 and 5% of extract reached full ripeness on day 18. Results of the present investigation suggest that safe, low-cost, and environmentally friendly coatings can improve the shelf life of perishable produces like bananas.

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Section: Results and Discussionmentioning

confidence: 78%

Section: Results and Discussionmentioning

confidence: 88%

Antioxidant-Incorporated Poly(vinyl alcohol) Coating: Preparation, Characterization, and Influence on Ripening of Green Bananas

2022

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“…[3][4][5] In recent years, the system of bimetallic nanomaterials (NPs) has attracted great attention because of their excellent catalytic activity, selectivity and stability compared to monometallic catalysts. [6,7] Compared with monometallic nanoparticles, there are synergistic interactions between different metals in bimetallic nanoparticles, including electron transfer and exchange, geometrical structure tuning, adsorption and stabilization of reactants and intermediates. [8,9] Bimetallic nanoparticle systems have been used in various fields, such as medical diagnostics, [10] biosensors, [11] supercapacitors, [12] and catalysis.…”

Section: Introductionmentioning

confidence: 99%

A Triazole‐Based Covalent Gel Loaded with Cu/Pd Bimetallic Nanoparticles for Efficient Catalytic Cross‐Coupling Reactions

Cui

et al. 2023

ChemistrySelect

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Metal nanoparticles immobilized in the confined space are a catalogue of efficient and widely used catalysts. Herein we develop a gel‐based bimetallic nanoparticle catalytic system with different ratios of Pd/Cu NPs by wet impregnation and reduction using a stable covalent gel (triazole‐A1B1) as a porous support. Triazole‐A1B1 gel is synthesized from 1,4‐diazidobenzene (A1) and tetrakis(4‐ethynylphenyl)methane (B1) via Cu(I)‐catalyzed azide‐alkyne clcloaddition. The bimetallic Pd/Cu metal nanoparticles are highly dispersed and uniformly distributed with an average particle size distribution of 2.06–3.29 nm. Cu/Pd@A1B1 shows high catalytic efficiency in catalyzing Sonogashira‐Hagihara and Mizoroki‐Heck coupling reactions. The introduction of oxygenophilic Cu effectively improves the catalytic activity of the system. In addition, Cu1Pd2@A1B1 shows good reusability. Especially, it can be reused five times and maintains high catalytic activity without significant deactivation in Mizoroki‐Heck coupling reaction.

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“…Carbon-supported platinum group metal (Pd, Pt, Ru, Ir, and Rh) catalysts showed outstanding results in chlorate reduction [ 19 , 20 , 21 ]. Several studies have confirmed that catalysts made by combining these precious metals, such as bimetallic Pd–Pt systems, generally perform better than their monometallic counterparts due to the synergistic effects [ 22 , 23 , 24 , 25 ].…”

Section: Introductionmentioning

confidence: 99%

Development of Nickel- and Magnetite-Promoted Carbonized Cellulose Bead-Supported Bimetallic Pd–Pt Catalysts for Hydrogenation of Chlorate Ions in Aqueous Solution

Sikora

Koncz-Horváth

Muránszky

et al. 2021

IJMS

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Cellulose grains were carbonized and applied as catalyst supports for nickel- and magnetite-promoted bimetallic palladium- and platinum-containing catalysts. The bimetallic spherical aggregates of Pd and Pt particles were created to enhance the synergistic effect among the precious metals during catalytic processes. As a first step, the cellulose bead-based supports were impregnated by nitrate salts of nickel and iron and carbonized at 973 K. After this step, the nickel was in an elemental state, while the iron was in a magnetite form in the corresponding supports. Then, Pd and Pt particles were deposited onto the supports and the catalyst surface; precious metal nanoparticles (10–20 nm) were clustered inside spherical aggregated particles 500–600 nm in size. The final bimetallic catalysts (i.e., Pd–Pt/CCB, Pd–Pt/Ni–CCB, and Pd–Pt/Fe3O4–CCB) were tested in hydrogenation of chlorate ions in the aqueous phase. For the nickel-promoted Pd–Pt catalyst, a >99% chlorate conversion was reached after 45 min at 80 °C. In contrast, the magnetite-promoted sample reached an 84.6% chlorate conversion after 3 h. Reuse tests were also carried out with the catalysts, and in the case of Pd–Pt/Ni–CCB after five cycles, the catalytic activity only decreased by ~7% which proves the stability of the system.

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Enhanced performance of supported Pd-Pt bimetallic catalysts prepared by modified electroless deposition for butane dehydrogenation

Cited by 17 publications

References 69 publications

Antioxidant-Incorporated Poly(vinyl alcohol) Coating: Preparation, Characterization, and Influence on Ripening of Green Bananas

Antioxidant-Incorporated Poly(vinyl alcohol) Coating: Preparation, Characterization, and Influence on Ripening of Green Bananas

A Triazole‐Based Covalent Gel Loaded with Cu/Pd Bimetallic Nanoparticles for Efficient Catalytic Cross‐Coupling Reactions

Development of Nickel- and Magnetite-Promoted Carbonized Cellulose Bead-Supported Bimetallic Pd–Pt Catalysts for Hydrogenation of Chlorate Ions in Aqueous Solution

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