Evaluation of Base for Catalytic Hydrodechlorination of 2,4-Dichlorophenol in Cocurrent Downflow Contactor Reactor

Rehman, Asim Ur; Chughtai, Arshad; Ijaz, Aamir; Butt, Muhammad Arif

doi:10.1007/s13369-016-2300-6

Cited by 2 publications

(1 citation statement)

References 29 publications

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“…The hazardous impact of CPs on environmental and human health has spurred research into several treatment methodologies aimed at reducing the presence of these contaminants. Techniques such as incineration, electrochemistry, photochemistry, biotechnology, and catalytic hydrodechlorination (HDC) have been explored [9][10][11][12] . While incineration is commonly employed, it can lead to the formation of highly toxic dioxins.…”

Section: Introductionmentioning

confidence: 99%

Facile synthesis of carbon supported ternary nickel-cobalt-iron nanocatalyst for the hydrodechlorination of 2-chlorophenol

Nguyen,

Phan

et al. 2024

Sci. Tech. Dev. J.

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Introduction: Chlorophenols (CPs) have become prevalent in the manufacture of herbicides, fungicides, pesticides, insecticides, pharmaceuticals, and dyes, contributing significantly to water pollution. Addressing this challenge, various treatment methods such as incineration, electrochemistry, photochemistry, biotechnology, and catalytic hydrodechlorination have been explored to reduce toxic chlorophenol contaminants. Hydrodechlorination stands out as an efficient technique for the removal of chlorine atoms. The dispersion of metal nanoparticles on supported materials significantly enhances the catalytic activity by increasing the specific surface area. Among these, carbon-supported nickel-cobalt-iron nanoparticles emerge as promising catalysts for the hydrodechlorination of 2-chlorophenol. Method: This study employs a chemical reduction method at high temperatures under an inert gas atmosphere to synthesize carbon-supported ternary nickel-cobalt-iron nanocatalysts, aiming to detoxify soil and water from pesticide residues. The physicochemical properties of these nanocatalysts were characterized using energy-dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Their catalytic activity was assessed through gas chromatography with a flame ionization detector (FID). Results: The analysis revealed that metallic nanoparticles are uniformly dispersed on the carbon support, with particle sizes ranging from 10 to 60 nm and an average size of 30 nm. The hydrodechlorination (HDC) of 2-chlorophenol (2-CP) achieved satisfactory conversions under various reaction conditions. Conclusion: The carbon-supported nickel-cobalt-iron nanoparticles demonstrated effective catalytic activity for the hydrodechlorination of 2-chlorophenol, highlighting their potential for application in the treatment of chloroorganic contaminations in the future.

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Section: Introductionmentioning

confidence: 99%

Facile synthesis of carbon supported ternary nickel-cobalt-iron nanocatalyst for the hydrodechlorination of 2-chlorophenol

Nguyen,

Phan

et al. 2024

Sci. Tech. Dev. J.

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Solvent‐Free Synthesized Zeolites NaA‐Supported Binary Nickel‐Silver Nanoparticles and Their Use as an Efficient Catalyst for Hydrodechlorination of 2,4‐Dichlorophenol

Co,

Nguyen,

et al. 2024

International Journal of Chemical Engineering

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Using a solvent‐free method, zeolite NaA was synthesized from raw kaolin, collected from Binh Duong, Vietnam. The synthesis involved thermal hydration under an alkaline solution. The catalysts based on binary nickel‐silver nanoparticles were prepared through in situ reduction of metal salts in aqueous zeolitic suspension using sodium borohydride as a reducing agent. The catalysts were fully characterized by various techniques such as X‐ray diffraction (XRD), Fourier transform infrared (FT‐IR), scanning electron microscopy (SEM), energy‐dispersive X‐ray (EDX), transmission electron microscopy (TEM), and Brunauer–Emmett–Teller (BET). The physicochemical properties of these catalysts were studied in detail, in which the formation of body‐centered cubic crystal zeolite NaA (1‐2 μm) containing the spherical shape of metallic nanoparticles with a particle size around 8–20 nm was observed. The hydrodechlorination of 2,4‐dichlorophenol was performed to confirm the high catalytic activity and stability of the 10%NiAg/ZA catalyst. The results showed that the catalyst achieved over 91% conversion initially and 73% conversion after five re‐uses.

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Evaluation of Base for Catalytic Hydrodechlorination of 2,4-Dichlorophenol in Cocurrent Downflow Contactor Reactor

Cited by 2 publications

References 29 publications

Facile synthesis of carbon supported ternary nickel-cobalt-iron nanocatalyst for the hydrodechlorination of 2-chlorophenol

Facile synthesis of carbon supported ternary nickel-cobalt-iron nanocatalyst for the hydrodechlorination of 2-chlorophenol

Solvent‐Free Synthesized Zeolites NaA‐Supported Binary Nickel‐Silver Nanoparticles and Their Use as an Efficient Catalyst for Hydrodechlorination of 2,4‐Dichlorophenol

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