Criteria of Host for the Formation of Graphite Intercalation Compounds

在同为受体型插层物的硫酸和氯化铁之间，发现主体碳材料的标准不同。在氯化铁的情况下，在有机溶液中插入的宿主判据也与通过蒸汽插入的判据不同。发现碱金属-醚配合物的插层反应的决定因素是主体碳材料的结构，但其结构（焦炭或热解碳）对插层反应有显著影响。对于Na-THF配合物，在较低温度下热处理的焦炭具有所谓的随机阶段结构，而从热解碳中得到了阶段1结构。然而，对于Na-DME配合物，没有观察到这样的宿主效应，所有的宿主碳都使化合物具有一级结构。这一结果表明，除了Na离子外，与醚分子的结合也会引起宿主效应。在甲基糠醛溶液中，根据所用的主体碳材料的不同，可以得到碱金属-甲基糠醛三元化合物或碱金属二元化合物。以本研究所研究的室温下溶液中的插层反应为限，表明插层反应受主体碳材料、插层物和溶剂等因素的控制。

Between sulfuric acid and iron chloride both of which are acceptor-type intercalates, the criteria of host carbon materials were found to be different. In the case of iron chloride, host criterion for the intercalation in organic solution was also diferent from that through vapor.The determining factor for the intercalation of alkali metal-ether complexes was found to be the structure of host carbon materials, but also their texture, either coke of pyrolytic carbon, has prominent effect for the intercalation reaction. For Na-THF complexes, the cokes heat-treated at relatively low temperatures gave so-called random stage structure, but from the pyrolytic carbons stage-1 structure was obtained. For Na-DME complexes, however, such as host effect was not observed and all host carbons gave the compounds with stage-1 structure. This result suggested that not only Na ions but also the combination with ether molecules causes the host effect. In MeTHF solution, either ternary compounds with alkali metal-MeTHF or binary compounds with alkali metal was obtained, depending on the host carbon materials used.Limiting to the intercalation reactions in the solutions at room temperature, which were studied in the present research, the intercalation reaction was shown to be governed by different factors, such as host carbon materials, intercalates and solvents.