9,9-Bis (4-aminophenyl) fluorene (BAPF) has been widely used in the research of high-performance polyimide and fluorene-based optical materials. However, it is challenging to mass production due to the limitation of catalytic technology. In this paper, various Mn exchanged phosphotungstic acid supported on montmorillonite catalysts were prepared. FESEM-EDX, FT-IR, Raman, XRD, XPS, BET, and NH₃-TPD were deployed to characterize the catalyst material. BAPF, synthesized by 9-fluorenone and aniline, was used to evaluate the catalytic activities of catalysts under different conditions. The amount and strength of acid sites were changed by the number of Mn ions into phosphotungstic acid, which affected the catalytic activity of BAPF synthesis. The findings of this study show that the yield of BAPF can reach up to 82.9%. In addition, the catalyst can maintain a high catalytic activity after three times of recycling, which can effectively simplify the purification process and reduce the environmental footprint of BAPF manufacturing.

9,9-双（4-氨基苯基）芴（BAPF）已广泛应用于高性能聚酰亚胺和芴基光学材料的研究。然而，由于催化技术的限制，大规模生产具有挑战性。本文制备了各种负载在蒙脱石催化剂上的锰交换磷钨酸。FESEM-EDX、FT-IR、拉曼、XRD、XPS、BET 和 NH ₃-TPD 被用来表征催化剂材料。由9-芴酮和苯胺合成的BAPF用于评估催化剂在不同条件下的催化活性。锰离子转化为磷钨酸的数量改变了酸位的数量和强度，从而影响了 BAPF 合成的催化活性。本研究结果表明，BAPF的产率可达82.9%。此外，该催化剂在循环使用3次后仍能保持较高的催化活性，可有效简化净化过程，减少BAPF制造的环境足迹。