摘要
以四氯化碳和乙二胺为前驱体,介孔氧化硅SBA-15为硬模板剂,采用纳米浇铸法合成系列不同碳氮比的介孔类石墨相氮化碳材料CN-SBA15。通过N2吸附-脱附、XRD、TEM、FT-IR和XPS等对CN-SBA15进行表征,并考察其在苯甲醛和丙二腈Knoevenagel缩合反应中的催化性能。结果表明,CN-SBA15的比表面和孔体积与前驱体的比例有直接关系,很好地反向复制了原SBA-15的有序结构。CN-SBA15含有大量的N杂环结构,在Knoevenagel缩合反应中显示出较高的催化活性、重复使用性和底物普适性。
Using carbon tetrachloride and ethanediamine as the precursors, and mesoporous silica SBA-15 as the hard template, a series of mesoporous graphitic carbon nitride （CN-SBA15） materials with various C/N molar ratios was synthesized by the nanocasting method. CN-SBA15 materials were characterized by means of N2 adsorption-desorption, XRD, TEM, FT-IR, and XPS spectroscopy, and their catalytic perform- ance for Knoevenagel condensation reactions between benzaldehyde and malononitrile was investigated. The results demonstrated that the surface area and pore volume of CN-SBA15 depended on the ratio of the precursors, and CN-SBA15 had well negatively replicated the original ordered structure of SBA-15. Owing to its abundant N-containing heterocyclic structures, CN-SBA15 exhibited high catalytic activity,recycla- bility, and versatility in Knoevenagel condensation reactions.
出处
《工业催化》
CAS
2016年第11期68-74,共7页
Industrial Catalysis
基金
国家自然科学基金(21203014)资助项目
江苏省先进催化与绿色制造协同创新中心创新型人才支持项目(ACGM2016-06-28)
