Spectrophotometric study of the corrosion behaviour of chromium in molten alkali carbonates

Chan Gyu Joo; Cheol Woo Yi; Cheolhwa Kang; Keon Kim

doi:10.1016/S0378-7753(97)02688-8

Spectrophotometric study of the corrosion behaviour of chromium in molten alkali carbonates

Chan Gyu Joo, Cheol Woo Yi, Cheolhwa Kang, Keon Kim

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

4 Citations (Scopus)

Abstract

The corrosion of chromium species in molten (Li/K)₂CO₃ and (Li/Na/K)₂CO₃ are investigated by spectrophotometry. A strong charge-transfer absorption band is observed in the ultraviolet region with λ_max = 372 nm, and the molar absorptivity of CrO^2-₄ in molten (Li/K)₂CO₃ is calculated. The corrosion rates are investigated by means of increasing the concentration of CrO^2-₄ in the melts. Under an air atmosphere, the corrosion rate is slower in molten (Li/K)₂CO₃ than in molten (Li/Na/K)₂CO₃ and Cr₂O₃ corrodes more easily in molten (Li/K)₂CO₃ than Cr. With an atmosphere of CO₂ = 1 atm, there is no increase in the CrO^2-₄ concentration in the solution phase during a period of 5 h.

Original language	English
Pages (from-to)	211-214
Number of pages	4
Journal	Journal of Power Sources
Volume	72
Issue number	2
DOIs	https://doi.org/10.1016/S0378-7753(97)02688-8
Publication status	Published - 1998 Apr 21

Bibliographical note

Funding Information:
The work was performed with the financial support of the Korea Science and Engineering Foundation (94-1400-09-01-3), Ministry of Education, Korea, through the Basic Science Research Institute program (BSRI-96-3407) and Korea Electric Power Corporation.

Keywords

Chromium
Corrosion
Molten carbonates
Spectrophotometry

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Energy Engineering and Power Technology
Physical and Theoretical Chemistry
Electrical and Electronic Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/S0378-7753(97)02688-8

Cite this

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title = "Spectrophotometric study of the corrosion behaviour of chromium in molten alkali carbonates",

abstract = "The corrosion of chromium species in molten (Li/K)2CO3 and (Li/Na/K)2CO3 are investigated by spectrophotometry. A strong charge-transfer absorption band is observed in the ultraviolet region with λmax = 372 nm, and the molar absorptivity of CrO2-4 in molten (Li/K)2CO3 is calculated. The corrosion rates are investigated by means of increasing the concentration of CrO2-4 in the melts. Under an air atmosphere, the corrosion rate is slower in molten (Li/K)2CO3 than in molten (Li/Na/K)2CO3 and Cr2O3 corrodes more easily in molten (Li/K)2CO3 than Cr. With an atmosphere of CO2 = 1 atm, there is no increase in the CrO2-4 concentration in the solution phase during a period of 5 h.",

keywords = "Chromium, Corrosion, Molten carbonates, Spectrophotometry",

author = "Joo, {Chan Gyu} and Yi, {Cheol Woo} and Cheolhwa Kang and Keon Kim",

note = "Funding Information: The work was performed with the financial support of the Korea Science and Engineering Foundation (94-1400-09-01-3), Ministry of Education, Korea, through the Basic Science Research Institute program (BSRI-96-3407) and Korea Electric Power Corporation.",

year = "1998",

month = apr,

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doi = "10.1016/S0378-7753(97)02688-8",

language = "English",

volume = "72",

pages = "211--214",

journal = "Journal of Power Sources",

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T1 - Spectrophotometric study of the corrosion behaviour of chromium in molten alkali carbonates

AU - Joo, Chan Gyu

AU - Yi, Cheol Woo

AU - Kang, Cheolhwa

AU - Kim, Keon

N1 - Funding Information: The work was performed with the financial support of the Korea Science and Engineering Foundation (94-1400-09-01-3), Ministry of Education, Korea, through the Basic Science Research Institute program (BSRI-96-3407) and Korea Electric Power Corporation.

PY - 1998/4/21

Y1 - 1998/4/21

N2 - The corrosion of chromium species in molten (Li/K)2CO3 and (Li/Na/K)2CO3 are investigated by spectrophotometry. A strong charge-transfer absorption band is observed in the ultraviolet region with λmax = 372 nm, and the molar absorptivity of CrO2-4 in molten (Li/K)2CO3 is calculated. The corrosion rates are investigated by means of increasing the concentration of CrO2-4 in the melts. Under an air atmosphere, the corrosion rate is slower in molten (Li/K)2CO3 than in molten (Li/Na/K)2CO3 and Cr2O3 corrodes more easily in molten (Li/K)2CO3 than Cr. With an atmosphere of CO2 = 1 atm, there is no increase in the CrO2-4 concentration in the solution phase during a period of 5 h.

AB - The corrosion of chromium species in molten (Li/K)2CO3 and (Li/Na/K)2CO3 are investigated by spectrophotometry. A strong charge-transfer absorption band is observed in the ultraviolet region with λmax = 372 nm, and the molar absorptivity of CrO2-4 in molten (Li/K)2CO3 is calculated. The corrosion rates are investigated by means of increasing the concentration of CrO2-4 in the melts. Under an air atmosphere, the corrosion rate is slower in molten (Li/K)2CO3 than in molten (Li/Na/K)2CO3 and Cr2O3 corrodes more easily in molten (Li/K)2CO3 than Cr. With an atmosphere of CO2 = 1 atm, there is no increase in the CrO2-4 concentration in the solution phase during a period of 5 h.

KW - Chromium

KW - Corrosion

KW - Molten carbonates

KW - Spectrophotometry

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U2 - 10.1016/S0378-7753(97)02688-8

DO - 10.1016/S0378-7753(97)02688-8

M3 - Article

AN - SCOPUS:0242504096

SN - 0378-7753

VL - 72

SP - 211

EP - 214

JO - Journal of Power Sources

JF - Journal of Power Sources

IS - 2

ER -

Spectrophotometric study of the corrosion behaviour of chromium in molten alkali carbonates

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

UN SDGs

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