Research on the adsorption of environmentally friendly insulating gas C ₄ F ₇ N decomposed components on the surface of <i>γ</i> ‐Al ₂ O ₃

C4F7N is considered to be the most potential alternative gas for SF6. However, harmful decomposition by-products generated by discharge or overheating faults will pose threat safe operation and service life of insulated equipment (GIE). Herein, we investigated adsorption performance γ-Al2O3 on its products evaluate possibility using it as adsorbent exhaust treatment material. It found that demonstrates superior capacity CF4, C2F6, C3F8, C3F6, C2F4, keeps stable after interaction. The first-principles calculation infers has stronger interaction with C4F7N, C3F6 C3F8 than C2F6 CF4. There exists obvious charge transfer between γ-Al2O3, which belongs chemisorption. F 2p orbital C=C π determines gas-solid performance. desorption properties were also explored recovery time was in order CF4 < C2F4< C3F6. Overall, inappropriate used mixture-based GIE, while can material wasted gas.