高温水热法合成系列介孔氧化铝负载铂催化

采用高温水热法制备稳定、 高度晶化的介孔氧化铝材料(M-Al₂O₃-n), 通过异丙醇铝前驱体与聚四乙烯基吡啶(P4VP)模板间的酸碱自组装实现材料介孔结构的构筑, 再经高温水热处理（180 ℃）实现孔壁的晶化, 并通过担载少量的铂活性组分研究其在催化完全燃烧苯中的性能. 结果表明: M-Al₂O₃-n具有高度晶化的孔壁结构和典型的γ-Al₂O₃晶型; M-Al₂O₃-n具有较大的比表面积（335 m²/g）、 孔容(1.36 cm³/g)和均一的孔径分布（16.1 nm）; M-Al₂O₃-n具有粗糙的表面结构及丰富的纳米多孔结构; 该材料负载少量的铂（质量分数为03%）活性组分得到的新型催化材料在较温和的条件下即可将苯类VOCs完全催化燃烧.

High Temperature Hydrothermal Synthesis of PtFunctionalized Mesoporous Al2O3 andIts Catalytic Activity for Benzene Combustion

Stable crystalline mesoporous Al₂O₃ (M-Al₂O₃-n) supporting Pt with good catalytic activity for benzene combustion have been successfully prepared. M-Al₂O_3-ns support was synthesized from the self assembly of Al precursor with poly 4 vinylpyridine (P4VP) template based on their strong acid base interactions, followed by hydrothermal treatment at 180 ℃ and calcination at 550 ℃.  XRD patterns show that M-Al₂O₃-ns are highly crystalline  with
γ-Al₂O₃ character. N2 isotherms and pore size distribution show that M-Al₂O₃-ns have a high BET surface area (335 m²/g), large pore volume (1.36 cm³/g) and uniform mesopores (16.1 nm). SEM images show that M-Al₂O₃-ns have rough surface  and abundant mesopores. Catalytic tests show that M-Al₂O₃-ns exhibit  excellent activity for benzene combustion under rather mild conditions.