Direct conversion of (bi)carbonate into methane using rare-metal hydrides: A promising approach for value-added fuels

Kang Chen; Fen Liu; Jincheng Huang; Xusheng Yang; Zhenguo Huang; Jiangwen Liu; Hui Wang; Liuzhang Ouyang

doi:10.1016/j.jallcom.2025.182565

Direct conversion of (bi)carbonate into methane using rare-metal hydrides: A promising approach for value-added fuels

Kang Chen
, Fen Liu
, Jincheng Huang
, Xusheng Yang (Corresponding Author)
, Zhenguo Huang (Corresponding Author)
, Jiangwen Liu
, Hui Wang
, Liuzhang Ouyang (Corresponding Author)

Research output: Journal article publication › Journal article › Academic research › peer-review

1 Citation (Scopus)

Abstract

Converting carbonate minerals into value-added fuels presents a promising long-term approach for addressing global warming and energy supply challenges. In this study, we report a facile strategy for directly converting metal (bi)carbonates (M(H)CO₃, where M represents Li, Na, K, Mg, or Ca, etc.) into CH₄ using a series of hydrides (RNi₅H₆, R = rare metal) through ball milling under ambient conditions. Our findings reveal that the methanation reaction exhibits remarkable selectivity, with no detectable CO formation in any of the metal hydride-(bi)carbonate systems. The yield of CH₄ mainly depends upon key factors such as the reaction duration, specific RNi₅H₆ species, H₂/CO₃^2- (or HCO₃^-) molar ratio, and metal (bi)carbonate sources. This work offers novel insights into deploying metal-based hydrides for carbonate reduction.

Original language	English
Article number	182565
Number of pages	6
Journal	Journal of Alloys and Compounds
Volume	1038
DOIs	https://doi.org/10.1016/j.jallcom.2025.182565
Publication status	Published - 20 Aug 2025

Keywords

Ball milling
Carbonate reduction
Hydrogen
Methanation
Rare-metal hydrides

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

More information

10.1016/j.jallcom.2025.182565

Cite this

@article{c7f007420e714642af7de60d8edc16d7,

title = "Direct conversion of (bi)carbonate into methane using rare-metal hydrides: A promising approach for value-added fuels",

abstract = "Converting carbonate minerals into value-added fuels presents a promising long-term approach for addressing global warming and energy supply challenges. In this study, we report a facile strategy for directly converting metal (bi)carbonates (M(H)CO3, where M represents Li, Na, K, Mg, or Ca, etc.) into CH4 using a series of hydrides (RNi5H6, R = rare metal) through ball milling under ambient conditions. Our findings reveal that the methanation reaction exhibits remarkable selectivity, with no detectable CO formation in any of the metal hydride-(bi)carbonate systems. The yield of CH4 mainly depends upon key factors such as the reaction duration, specific RNi5H6 species, H2/CO32- (or HCO3-) molar ratio, and metal (bi)carbonate sources. This work offers novel insights into deploying metal-based hydrides for carbonate reduction.",

keywords = "Ball milling, Carbonate reduction, Hydrogen, Methanation, Rare-metal hydrides",

author = "Kang Chen and Fen Liu and Jincheng Huang and Xusheng Yang and Zhenguo Huang and Jiangwen Liu and Hui Wang and Liuzhang Ouyang",

note = "Publisher Copyright: {\textcopyright} 2025 Elsevier B.V.",

year = "2025",

month = aug,

day = "20",

doi = "10.1016/j.jallcom.2025.182565",

language = "English",

volume = "1038",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier BV",

}

TY - JOUR

T1 - Direct conversion of (bi)carbonate into methane using rare-metal hydrides: A promising approach for value-added fuels

AU - Chen, Kang

AU - Liu, Fen

AU - Huang, Jincheng

AU - Yang, Xusheng

AU - Huang, Zhenguo

AU - Liu, Jiangwen

AU - Wang, Hui

AU - Ouyang, Liuzhang

PY - 2025/8/20

Y1 - 2025/8/20

N2 - Converting carbonate minerals into value-added fuels presents a promising long-term approach for addressing global warming and energy supply challenges. In this study, we report a facile strategy for directly converting metal (bi)carbonates (M(H)CO3, where M represents Li, Na, K, Mg, or Ca, etc.) into CH4 using a series of hydrides (RNi5H6, R = rare metal) through ball milling under ambient conditions. Our findings reveal that the methanation reaction exhibits remarkable selectivity, with no detectable CO formation in any of the metal hydride-(bi)carbonate systems. The yield of CH4 mainly depends upon key factors such as the reaction duration, specific RNi5H6 species, H2/CO32- (or HCO3-) molar ratio, and metal (bi)carbonate sources. This work offers novel insights into deploying metal-based hydrides for carbonate reduction.

AB - Converting carbonate minerals into value-added fuels presents a promising long-term approach for addressing global warming and energy supply challenges. In this study, we report a facile strategy for directly converting metal (bi)carbonates (M(H)CO3, where M represents Li, Na, K, Mg, or Ca, etc.) into CH4 using a series of hydrides (RNi5H6, R = rare metal) through ball milling under ambient conditions. Our findings reveal that the methanation reaction exhibits remarkable selectivity, with no detectable CO formation in any of the metal hydride-(bi)carbonate systems. The yield of CH4 mainly depends upon key factors such as the reaction duration, specific RNi5H6 species, H2/CO32- (or HCO3-) molar ratio, and metal (bi)carbonate sources. This work offers novel insights into deploying metal-based hydrides for carbonate reduction.

KW - Ball milling

KW - Carbonate reduction

KW - Hydrogen

KW - Methanation

KW - Rare-metal hydrides

UR - https://www.scopus.com/pages/publications/105012625861

U2 - 10.1016/j.jallcom.2025.182565

DO - 10.1016/j.jallcom.2025.182565

M3 - Journal article

AN - SCOPUS:105012625861

SN - 0925-8388

VL - 1038

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

M1 - 182565

ER -

Direct conversion of (bi)carbonate into methane using rare-metal hydrides: A promising approach for value-added fuels

Abstract

Keywords

ASJC Scopus subject areas

More information

Other files and links

Fingerprint

Cite this