【摘要】 首先以六氯环三磷腈、2,2’-联苯酚和4-羟基苯甲醛为原料,合成了双醛基环三磷腈衍生物(DHBCPP),然后以DHBCPP和三聚氰胺为构筑单元,通过缩合反应制备了基于环三磷腈的有机微孔聚合物PCPP-TZ。通过红外光谱、固体核磁、热失重分析、扫描电子显微镜(SEM)和透射电子显微镜(TEM)表征了聚合物PCPP-TZ的结构和形貌。通过氮气吸附-脱附实验得知聚合物PCPP-TZ的比表面积为884 m~2/g,总孔容为0.419 cm~3/g,其中微孔孔容达到0.343 cm~3/g,表明聚合物具有较大比表面积和发达的微孔结构。进一步研究了基于环三磷腈的有机微孔聚合物PCPP-TZ的二氧化碳吸附性能,在298 K/0.1 MPa和273 K/0.1 MPa条件下,聚合物PCPP-TZ的二氧化碳吸附量达到3.32和4.05 mmol/g。更多还原

【Abstract】 The dialdehyde-containing cyclotriphosphazene derivative（DHBCPP） was synthesized by successive nucleophilic substitution reaction between hexachlorocyclotriphosphazene, 2,2’-diphenol and 4-hydroxy benzaldehyde. Subsequently, the cyclotriphosphazene-based microporous organic polymer PCPP-TZ was prepared through the condensation reaction between DHBCPP and melamine, which were utilized as constructing block units. The composition and morphology of the as-synthesized polymer PCPP-TZ were fully characterized by FT-IR, solid state NMR, thermogravimetic analysis, SEM and TEM. The N₂ adsorption-desorption isotherms indicated that the polymer PCPP-TZ possessed a specific surface area of 884 m²/g, a total pore volume of 0.419 cm³/g and a micropore volume of 0.343 cm³/g. It was found that the cyclotriphosphazene-based microporous organic polymer PCPP-TZ exhibited an excellent CO₂ capture performance. At 298 K/0.1 MPa, CO₂ capture capacity of PCPP-TZ was calculated to be 3.32 mmol/g, and the highest CO₂ capture capacity was achieved to 4.05 mmol/g under 273 K/0.1 MPa.更多还原