Supercritical water oxidation of 2-chlorophenol effected by Li+ and CuO/zeolites

Kuen Song Lin; H. Paul Wang; Y. W. Yang

doi:10.1016/S0045-6535(99)00040-5

Supercritical water oxidation of 2-chlorophenol effected by Li⁺ and CuO/zeolites

Kuen Song Lin, H. Paul Wang, Y. W. Yang

Department of Environmental Engineering

Research output: Contribution to journal › Article › peer-review

21 Citations (Scopus)

Abstract

Catalytic oxidation of 2-chlorophenol (2CP) in supercritical water was investigated. Experimentally, conversion of 2CP in supercritical water oxidation (SCWO) process is effectively enhanced in the presence of Li⁺ that also reduces the formation of higher chlorinated phenols and PAHs. The global reaction rate of SCWO of 2CP in the presence of Li⁺ is expressed as: 92.5 exp (-10.5/RT)[2CP]^0.95[O₂]^0.56[H₂O]^0.45. The undesired by-products in the SCWO of 2CP are also extensively reduced in the channels of zeolite catalysts. By EXAFS spectroscopy, Cu-O and Cu-Cu are identified as the main oxidation active species in the zeolite channels. Cl-bonded CuO species in zeolite Y are not observed.

Original language	English
Pages (from-to)	1385-1396
Number of pages	12
Journal	Chemosphere
Volume	39
Issue number	9
DOIs	https://doi.org/10.1016/S0045-6535(99)00040-5
Publication status	Published - 1999 Oct

All Science Journal Classification (ASJC) codes

General Chemistry
Pollution
Health, Toxicology and Mutagenesis
Environmental Engineering
Environmental Chemistry

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10.1016/S0045-6535(99)00040-5

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title = "Supercritical water oxidation of 2-chlorophenol effected by Li+ and CuO/zeolites",

abstract = "Catalytic oxidation of 2-chlorophenol (2CP) in supercritical water was investigated. Experimentally, conversion of 2CP in supercritical water oxidation (SCWO) process is effectively enhanced in the presence of Li+ that also reduces the formation of higher chlorinated phenols and PAHs. The global reaction rate of SCWO of 2CP in the presence of Li+ is expressed as: 92.5 exp (-10.5/RT)[2CP]0.95[O2]0.56[H2O]0.45. The undesired by-products in the SCWO of 2CP are also extensively reduced in the channels of zeolite catalysts. By EXAFS spectroscopy, Cu-O and Cu-Cu are identified as the main oxidation active species in the zeolite channels. Cl-bonded CuO species in zeolite Y are not observed.",

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T1 - Supercritical water oxidation of 2-chlorophenol effected by Li+ and CuO/zeolites

AU - Lin, Kuen Song

AU - Wang, H. Paul

AU - Yang, Y. W.

PY - 1999/10

Y1 - 1999/10

N2 - Catalytic oxidation of 2-chlorophenol (2CP) in supercritical water was investigated. Experimentally, conversion of 2CP in supercritical water oxidation (SCWO) process is effectively enhanced in the presence of Li+ that also reduces the formation of higher chlorinated phenols and PAHs. The global reaction rate of SCWO of 2CP in the presence of Li+ is expressed as: 92.5 exp (-10.5/RT)[2CP]0.95[O2]0.56[H2O]0.45. The undesired by-products in the SCWO of 2CP are also extensively reduced in the channels of zeolite catalysts. By EXAFS spectroscopy, Cu-O and Cu-Cu are identified as the main oxidation active species in the zeolite channels. Cl-bonded CuO species in zeolite Y are not observed.

AB - Catalytic oxidation of 2-chlorophenol (2CP) in supercritical water was investigated. Experimentally, conversion of 2CP in supercritical water oxidation (SCWO) process is effectively enhanced in the presence of Li+ that also reduces the formation of higher chlorinated phenols and PAHs. The global reaction rate of SCWO of 2CP in the presence of Li+ is expressed as: 92.5 exp (-10.5/RT)[2CP]0.95[O2]0.56[H2O]0.45. The undesired by-products in the SCWO of 2CP are also extensively reduced in the channels of zeolite catalysts. By EXAFS spectroscopy, Cu-O and Cu-Cu are identified as the main oxidation active species in the zeolite channels. Cl-bonded CuO species in zeolite Y are not observed.

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Supercritical water oxidation of 2-chlorophenol effected by Li⁺ and CuO/zeolites

Abstract

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