顆粒狀的γ-Al2O3常當做為觸媒載體材料，並隨機裝載在不鏽鋼觸媒床，當與雙氧水反應時因雙氧水分解過程中產生的壓力和溫度急劇升高觸媒載體可能會沖散。3D列印陶瓷通常列印完後需燒結以增強機械強度，但高溫會使γ-Al2O3相轉變為α-Al2O3造成比表面積降低。因此本研究透過在光固化樹脂中添加氧化鑭來減緩γ-Al2O3因燒結過程中相變成α-Al2O3，希望能兼具比表面積與機械性質。
本研究所採用的光固化陶瓷漿料為樹脂中添加六種不同氧化鑭與γ-Al2O3比例粉末，並針對其3D列印，探討不同比例及燒結溫度對比表面積與機性質的影響。根據氮氣吸附結果得知比表面積會隨著燒結溫度增加而減少。氧化鑭與氧化鋁莫耳比為1:2.19 mol、1:3.26 mol、1:76.1 mol、1:130 mol在燒結溫度為900與950℃時比表面積下降斜率一致，但 1:1 mol比表面積大幅下降，代表添加少量鑭可以減少比表面積下降。1:3.26 mol在燒結溫度950℃開始超越0:1 mol，且壓縮強度為1:79.1 mol與1:130 mol在燒結溫度為950℃壓縮強度減少2.05倍與2.3倍。

Granular γ-Al2O3 is commonly used as a catalyst carrier material and loaded randomly into a stainless steel catalyst bed. During the hydrogen peroxide decomposition process, the pressure and temperature sharply increase, potentially causing the dispersion of the catalyst carrier.3D printing ceramics usually undergo sintering to enhance mechanical strength. However, the high temperature during sintering can cause γ-Al2O3 to transform into α-Al2O3, leading to a reduction in surface area.This study aims to mitigate the transformation of γ-Al2O3 into α-Al2O3 during sintering by adding lanthanum oxide to the photocurable resin, hoping to achieve a balance between surface area and mechanical properties.
The photocurable ceramic slurry used in this study involves adding six different ratios of lanthanum oxide to γ-Al2O3 powder in the resin. Investigates the effects of different ratios and sintering temperatures on surface area and mechanical properties through 3D printing. According to nitrogen adsorption results, surface area decreases with an increase in sintering temperature. For the mole ratio of lanthanum oxide to aluminum oxide 1:2.19 mol, 1:3.26 mol, 1:76.1 mol, and 1:130 mol, the surface area reduction rates are consistent at sintering temperatures of 900 and 950°C. However, the surface area significantly decreases for a 1:1 mol ratio, indicating that adding a small amount of lanthanum can reduce the decrease in surface area. At the sintering temperature of 950°C, the ratio of 1:3.26 mol surpasses 0:1 mol, and the compressive strength for ratios of 1:79.1 mol and 1:130 mol decreases by 2.05 times and 2.3 times.

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