Fluoride-mediated synthesis in the inorganic hydrothermal system has been proposed for preparing large crystals of layered Na/K-JDF-L1 with lamellar morphology. The protonated JDF-L1 crystals derived from their layered precursors are structurally modified by 1,6-hexanediamine intercalation under mild hydrothermal conditions. All the materials mentioned are characterized by XRD, FESEM, EDX/ICP-AES, and TGA–DSC. It is concluded that the combination of fluorides with low alkalinity (pH ca.10.0) and crystallization temperature (200 °C) facilitates the oriented growth of metastable layered phase Na/K-JDF-L1, yielding regular lamellar crystals with square-sheet structure in two-dimensions of ca. 15 × 15 μm. Data on Na/K-JDF-L1 structure are presented for identification of the most probable tetragonal space group, P42₁2, corresponding to the highest crystallographic symmetry. It is also revealed that amine intercalation of relevant H-JDF-L1 by the hydrothermal process leads to the formation of layered titanosilicate materials with an ordered redistribution of the dominant interlayer space (d₀₀₁) shifting from 10.674 to 15.620 Å.

已提出在无机水热系统中进行氟化物介导的合成，以制备具有层状形态的层状Na / K-JDF-L1层大晶体。在温和的水热条件下，通过1,6-己二胺插层对源自其分层前体的质子化JDF-L1晶体进行结构改性。提到的所有材料均具有XRD，FESEM，EDX / ICP-AES和TGA-DSC的特征。结论是，低碱度的氟化物（pH约10.0）和结晶温度（200°C）的组合促进了亚稳层状相Na / K-JDF-L1的定向生长，生成了具有正方形结构的规则层状晶体在二维的ca. 15×15微米 提供有关Na / K-JDF-L1结构的数据，以鉴定最可能的四边形空间群P42 ₁ 2对应于最高的晶体对称性。还揭示了通过水热过程的相关H-JDF-L1的胺插层导致层状钛硅酸盐材料的形成，其主要层间空间（d ₀₀₁）的有序重新分布从10.674变为15.620Å。