Catalytic Dechlorination of Three Organochlorides by Recyclable Nano-Palladium-Engineered Natural Sponge with Formic Acid

Liu, Mingyue; Chen, Gang; Song, Zhenjun; He, Zhicai; Zhong, Aiguo; Cui, Mei

doi:10.3390/catal14070424

Open AccessArticle

Catalytic Dechlorination of Three Organochlorides by Recyclable Nano-Palladium-Engineered Natural Sponge with Formic Acid

by

Mingyue Liu

^1,*

,

Gang Chen

¹,

Zhenjun Song

¹

,

Zhicai He

¹,

Aiguo Zhong

^1,* and

Mei Cui

²

¹

School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, China

²

State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China

^*

Authors to whom correspondence should be addressed.

Catalysts 2024, 14(7), 424; https://doi.org/10.3390/catal14070424

Submission received: 8 June 2024 / Revised: 24 June 2024 / Accepted: 1 July 2024 / Published: 3 July 2024

(This article belongs to the Section Environmental Catalysis)

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Abstract

Catalytic dechlorination of organic chlorides by palladium (Pd) with HCOOH represents one of the most effective and promising techniques for environmental remediation. In this study, we adopted alkaline-modified porous natural sponge as support of a Pd nanocatalyst (Pd@M-Sponge) and HCOOH as a hydrogen source for the hydrodechlorination of florfenicol (FF), o-chlorophenol (o-CP), and p-chlorophenol (p-CP). Favorable conversion efficiency of FF, o-CP, and p-CP was achieved at 25 °C and atmospheric pressure attributed to the small diameter and high catalytic reactivity of the prepared Pd NPs, in addition to the slight internal mass transfer limitation of the prepared Pd@M-Sponge. High reaction rate constants were obtained even in the conditions of a low molar ratio of HCOOH to p-CP (10:1) and a high concentration of p-CP (500 mg/L). The prepared catalyst also demonstrated superior recyclability without any obvious decrease in catalytic reactivity in 20 successive p-CP dechlorination cycles. This work provides an ideal recyclable and cost-effective catalyst based on renewable and biocompatible natural material for the catalytic hydrodechlorination of chlorinated organic pollutants with formic acid and a new view for the exploration and designing of highly reactive and stable catalysts for hydrodechlorination.

Keywords: dechlorination; formic acid; sponge; florfenicol; chlorophenol; Pd NPs

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MDPI and ACS Style

Liu, M.; Chen, G.; Song, Z.; He, Z.; Zhong, A.; Cui, M. Catalytic Dechlorination of Three Organochlorides by Recyclable Nano-Palladium-Engineered Natural Sponge with Formic Acid. Catalysts 2024, 14, 424. https://doi.org/10.3390/catal14070424

AMA Style

Liu M, Chen G, Song Z, He Z, Zhong A, Cui M. Catalytic Dechlorination of Three Organochlorides by Recyclable Nano-Palladium-Engineered Natural Sponge with Formic Acid. Catalysts. 2024; 14(7):424. https://doi.org/10.3390/catal14070424

Chicago/Turabian Style

Liu, Mingyue, Gang Chen, Zhenjun Song, Zhicai He, Aiguo Zhong, and Mei Cui. 2024. "Catalytic Dechlorination of Three Organochlorides by Recyclable Nano-Palladium-Engineered Natural Sponge with Formic Acid" Catalysts 14, no. 7: 424. https://doi.org/10.3390/catal14070424

APA Style

Liu, M., Chen, G., Song, Z., He, Z., Zhong, A., & Cui, M. (2024). Catalytic Dechlorination of Three Organochlorides by Recyclable Nano-Palladium-Engineered Natural Sponge with Formic Acid. Catalysts, 14(7), 424. https://doi.org/10.3390/catal14070424

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

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Catalytic Dechlorination of Three Organochlorides by Recyclable Nano-Palladium-Engineered Natural Sponge with Formic Acid

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