学術雑誌論文

学術雑誌論文

text

Chemistry Letters. 2025, 54(10), p. 177

Catalytic Combustion-Type Methane Gas Sensor with Tungsten-doped Apatite-type Gadolinium Silicate

Oxford University Press

英語

text

2025-09-17

https://doi.org/10.1093/chemle/upaf177

This is a pre-copyedited, author-produced version of an article accepted for publication in Chemistry Letters following peer review. The version of record Wonjoon Lee, Shinji Tamura, Nobuhito Imanaka, Catalytic combustion-type methane gas sensor with tungsten-doped apatite-type gadolinium silicate, Chemistry Letters, Volume 54, Issue 10, October 2025, upaf177, is available online at: https://doi.org/10.1093/chemle/upaf177.

We report a thermally engineered apatite-type Gd₁₀Si₆−xWxO₂₇+δ-supported PdO/γ-Al₂O₃ catalyst for catalytic combustion-type CH₄ sensor. Incorporation of W⁶⁺ induces local lattice distortion via strong W–O bonds, reducing catalyst-specific heat capacity and enabling rapid internal heat transfer. This accelerates sensor response speed and sensitivity at lower operating temperatures. Optimized PdO/Gd₁₀Si₅.₇W₀.₃O₂₇+δ/γ-Al₂O₃ catalyst exhibited more than twice the sensor output and a significantly shorter response time than the undoped system, demonstrating lattice-level thermal control via strategic chemical substitution improves sensor performance.

The full-text file will be made open to the public on 17 September 2026 in accordance with the publisher's policy.

103000

Catalytic Combustion-Type Methane Gas Sensor with Tungsten-doped Apatite-type Gadolinium Silicate

Oxford University Press

英語

2025-09-17

Chemistry Letters

54

10

177

https://doi.org/10.1093/chemle/upaf177

https://hdl.handle.net/11094/103000