莫来石凝胶是制备超细莫来石的优良先驱物，主要分为单相和双相凝胶。
Mullite gels are excellent precursors for preparing fine mullite. Mullite gels consist of monophasic gel and diphasic gel.
结果表明，与乙二烯基先驱物相比，对于TBTDET和TBTEMT材料，特丁基群是最稳定的基群。
The results indicated that the tert-butyliminogroup is the most stable group on TBTDET and TBTEMT as compared to the dialkylamido groups.
使用透射电镜和X射线衍射对先驱沉淀物的形貌及煅烧过程的相转变进行了研究。
The precipitate precursor and phase transformation was characterized by TEM and X-ray diffraction.
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