本論文研究為奈米級氮化鋁粉體及其中間產物氧化鋁之合成與生成機制探討，研究方法悉以溶液燃燒合成法結合熱碳還原法改善傳統熱碳還原法之反應物混合不均勻及反應溫度過高之關鍵問題，研究以氧化劑硝酸鋁搭配三種不同之還原劑：尿素、氨基乙酸及檸檬酸，並以水溶性化合物蔗糖為碳源，以反應物劑量比、鍛燒時間及溫度、氮化溫度為變數進行研究。
於氧化鋁合成部份，以尿素為還原劑之實驗組別，產物在合成後便為微米級α相氧化鋁，且可利用調整不同硝酸鋁/尿素比例控制其比表面積，比表面積最高值為100 m2/g。以檸檬酸及氨基乙酸為實驗之組別，因產物內有殘碳存在，必須經由鍛燒步驟方可得到微米級之α相氧化鋁，比表面積之最高值約為11 m2/g。
於氮化鋁合成部份，實驗結果顯示各還原劑組別皆可在低於傳統熱碳還原法之反應溫度下(<1600°C)合成奈米級氮化鋁粒子，並可利用調整反應溫度及碳源含量進而控制產物之粒徑、比表面積值及氧含量。以尿素為還原劑之最佳產物粒徑落於15-20 nm間，最佳比表面積值約為100 m2/g，氧含量之最佳值約為4 wt%；以氨基乙酸為還原劑之最佳產物粒徑落於15-20 nm間，最佳比表面積值約為140 m2/g，氧含量之最佳值約為3.6wt %；檸檬酸因本身可為碳源，以其為還原劑之實驗組別產物粒徑為三種還原劑組別中最小，最佳產物粒徑約為10 nm，最大比表面積為180 m2/g，氧含量之最佳值為3wt %。

In this thesis, the synthesis process and reaction mechanism of nano-scale aluminum nitride powder and its precursor alumina powder were developed by using “modified carbothermal reduction method”, which combined solution combustion method with traditional carbothermal reduction method. In the meantime, the uniformity of precursor and the reaction temperature were expected to be improved via this modified method. Starting materials included aluminum nitrate as oxidant, urea, glycine, citrate acid as reductant and sucrose as carbon source. In addition, the effects of oxidant/reducdant/carbon ratio, calcined temperature, duration of calcination, nitridation temperature have been selected as experimental parameter.
In alumina synthesis part, the as-burnt product of experimental groups using urea as reductant was characterized to be fine particle α-alumina, and the specific area of resultant product can be controlled by adjusting oxidant/reductant ratio, the maximum specific area value in this group is about 100 m2/g. Because of carbon residual problem, the as-burnt product of experimental groups using glycine and citrate as reductant were amorphous. In order to obtain fine particle α-alumina, as-burnt product needs to be calcined at high temperature in air, the maximum specific area of final product in both groups is merely about 11 m2/g.
In aluminum nitride synthesis part, the experimental results show that the final products in certain circumstances were exactly nano-sized aluminum nitride no matter what reductant was used, and the reaction temperature was much lower than traditional carbothermal reduction method(<1600°C). By adjusting the reaction temperature and carbon content, the particle size, specific area and oxygen content can be controlled. Moreover, the optimum results in every group are showed as follows: among the experimental groups using urea as reductant, the minimum particle size is about 15-20nm while the maximum specific area value is about 100 m2/g and the optimum oxygen content value is around 4 wt%. In the experimental groups using glycine as reductant, the minimum particle size is about 15-20nm while the maximum specific area value and the optimum oxygen content value show about 140 m2/g and 3.6 wt% respectively. Because the citrate itself can be either reductant or carbon source, the experimental groups using citrate as reductant have the smallest particle size when compared with others, the minimum particle size in this group is about 10 nm, the maximum specific area value is about 180 m2/g and the optimum oxygen content value is around 3 wt%.

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