A novel replaceable microreactor was designed to investigate the catalytic decomposition of nitrous oxide. The replaceable microchannel plate was coated using 1wt.% Pd/anodic γ-Al₂O₃. The anodization method was adopted to prepare the anodic γ-Al₂O₃ on the aluminum microchannel plate. Palladium was loaded on anodic γ-Al₂O₃ support by wet impregnation technique. The morphology, thickness, structure, reduction behavior, surface area, and the catalytic performance of the catalyst were characterized via field emission scanning electron microscope (FE-SEM), energy dispersive spectrometer (EDS), X-ray diffraction (XRD), transmission electron microscopy (TEM), H₂ temperature-programmed reduction (H_2-TPR) and Brunauer-Emmett-Teller (BET) surface area analysis. The performance of the prepared catalyst into the replaceable microreactor was experimentally investigated through nitrous oxide decomposition reaction in the temperature range of 280-340 °C and various GHSV of 1000, 2000, and 3000 mL h⁻¹ g_cat⁻¹. Complete conversion of N₂O decomposition was achieved at the temperature of 340${}^{\circ }C$, atmospheric pressure, and a GHSV of 1000 mL h⁻¹g_cat⁻¹. The results indicated that Pd/anodic γ-Al₂O₃ catalyst is promising to eliminate the dangerous emissions of nitrous oxide greenhouse gas in the chemical industry via direct catalytic decomposition. Furthermore, the proposed elliptical replaceable microreactor is effective for complete N₂O decomposition as it requires lower amounts of catalyst and energy compared to the other conventional reactors.

设计了一种新型可更换微反应器来研究一氧化二氮的催化分解。使用1wt.% Pd/阳极γ-Al ₂ O ₃涂覆可更换微通道板。采用阳极氧化法在铝微通道板上制备阳极γ-Al ₂ O ₃。通过湿浸渍技术将钯负载在阳极γ-Al ₂ O ₃载体上。通过场发射扫描电子显微镜（FE-SEM）、能谱仪（EDS）、X射线衍射（XRD）、透射电镜对催化剂的形貌、厚度、结构、还原行为、表面积和催化性能进行表征。电子显微镜（TEM），H ₂程序升温还原 (H ₂ -TPR) 和 Brunauer-Emmett-Teller (BET) 表面积分析。通过在280-340°C的温度范围和1000、2000和3000mL h ^-1 g _cat ^{-1 的}各种GHSV下的氧化亚氮分解反应，实验研究了制备的催化剂在可更换微反应器中的性能。在 340 ℃下实现N ₂ O 分解完全转化${}^{\circ }C$、大气压和 1000 mL h ^-1 g _cat ^-1的 GHSV 。结果表明，Pd/阳极γ-Al ₂ O ₃催化剂有望通过直接催化分解消除化学工业中一氧化二氮温室气体的危险排放。此外，所提出的椭圆形可更换微反应器对于完全 N ₂ O 分解是有效的，因为与其他常规反应器相比，它需要更少的催化剂和能量。