In situ nanoconfinement catalysis for rapid hydrodechlorination of chlorophenol

IF 4.1 2区工程技术 Q2 ENGINEERING, CHEMICAL

Chemical Engineering Science Pub Date : 2025-02-20 DOI:10.1016/j.ces.2025.121357

Uddin Sk Raihan , Jingqi Zhang , Jingbo Chao , Qing Hu , Frederic Coulon , Xiao Jin Yang

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引用次数: 0

Abstract

Chlorinated phenols are highly toxic to human and ecosystem and their biological degradation is difficult. In this work, a novel MgAlNi alloy catalyst was developed for rapid chemical degradation of p-chlorophenol (4-CP) in water under mild conditions via in situ hydrodechlorination (iHDC) without external hydrogen gas supply. A complete conversion of 0.195 mM 4-CP to phenol was achieved within 15 min with a reaction rate constant of 7.65 h⁻¹, 19.4 times higher than that of the traditional Raney Nickel (AlNi alloy) catalyst. The excellent performance of MgAlNi alloy catalyst is attributed to enhanced H₂ generation by Mg etching, surface self-reconstruction by growth of in situ layered double hydroxide (iLDH) nanosheets of 0.08–1 nm, exposed active sites of AlNi intermetallic compounds Al₃Ni₂ and Al₃Ni. The findings of this study provide new insights into broader applications of nanoconfinement catalysis to environmental remediation and open a new domain of in situ nanoconfinement catalysis (iNCC).

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来源期刊

Chemical Engineering Science 工程技术-工程：化工

CiteScore

7.50

自引率

8.50%

发文量

1025

审稿时长

50 days

期刊介绍： Chemical engineering enables the transformation of natural resources and energy into useful products for society. It draws on and applies natural sciences, mathematics and economics, and has developed fundamental engineering science that underpins the discipline. Chemical Engineering Science (CES) has been publishing papers on the fundamentals of chemical engineering since 1951. CES is the platform where the most significant advances in the discipline have ever since been published. Chemical Engineering Science has accompanied and sustained chemical engineering through its development into the vibrant and broad scientific discipline it is today.