Preparation and Activation of Heteroatom Containing ACF

研究了AlCl_3催化喹啉和硅喹啉制备含氮沥青的结构和性能。在相同的制备条件下，喹啉具有较高的沥青收率、稍高的软化点和较高的分子量。喹啉和异喹啉沥青均为各向同性，但在不含AlCl_3的情况下，喹啉沥青在380℃下热处理6小时后转化为中间相沥青。而异喹啉沥青则不能产生中间相沥青。考虑萘环1位和2位上喹啉和异喹啉的不同氮位，讨论了缩合机理。喹啉和异喹啉沥青被碳化成不同光学结构的焦炭。x射线衍射结果表明，喹啉沥青具有较大的流动域和良好的石墨化性能，而异喹啉沥青产生各向同性焦，石墨化性能较差。在整个碳化过程中，脱氢过程非常相似，而在碳化过程中氮的消除速率却有很大的不同。从氮原子行为和碳化过程中沥青性质的变化等方面研究了碳化过程。对生产的焦炭进行了碱度测定。

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.