Preparation and Activation of Heteroatom Containing ACF

本文研究了喹啉和异喹啉在AlCl_3催化下合成的含氮沥青的结构和性能。在相同的制备条件下，喹啉的沥青产率较高，软化点略高，分子量也较高。喹啉沥青和异喹啉沥青在280 ℃下热处理4小时后均为各向同性，而喹啉沥青在无AlCl_3存在的条件下，经380 ℃热处理6小时后转变为中间相沥青。喹啉沥青和异喹啉沥青不能生成中间相沥青.根据喹啉和异喹啉沥青在萘环1位和2位上的不同氮原子位置讨论了缩合反应机理.喹啉和异喹啉沥青生成的焦炭具有不同的光学结构. X射线衍射结果表明，喹啉沥青流动域大，石墨化性能好，而异喹啉沥青生成各向同性焦炭，石墨化性能差。在整个碳化过程中，脱氢反应非常相似，而氮的脱除速率在碳化过程中有很大差异。从碳化过程中氮原子的行为和沥青性质的变化两个方面对沥青的碳化过程进行了研究。还考察了生产焦炭的碱度。

Structure and properties of nitrogen containing pitches prepared catalytically from quinoline and lsiquinoline by aid of AlCl_3 were studied. In spite of the same preparative conditions, quinoline exhibited higher pitch yield, slightly higher softening point and higher molecular weight. Both of quinoline and isoquinoline pitches which were prepared at 280ﾟC for 4hrs were isotropic, however quinoline pitch was converted to mesophase pitch after heat-treatment at 380ﾟC for 6hrs in absence of AlCl_3. On the contrary isoquinoline pitch could not produce mesophase pitch.The condensation mechanism is discussed by taking account of different nitrogen Iocation of uinoline and isoquinoline in the 1 or 2 position of the naphthalene ring.Quinoline and isoquinoline pitches were found to be carbonized to cokes of different optical textures. Quinoline pitch exhibited large flow domain and goo graphitizability which was measured by means of X-ray diffraction, whereas isoquinoline pitch produced isotropic cokes and poor graphitizability. Dehydrogenation was very similar all through the carbonization process, while the elimination rate of nitrogen was very different in the carbonization. The carbonization process was investigated in terms of behavior of nitrogen atom and changes of properties o pitches during the carbonization. The basicity of produced cokes was also examined.