Abstract

Nitrogen-doped carbon nanotubes (N-CNTs) with different degrees of nitrogen doping were synthesized. The effects of nitrogen in the N-CNTs on the hydrophilic–hydrophobic properties of carbon nanotubes and their activity in the decomposition of Н₂О₂ were studied. Various approaches to the surface modification of N-CNTs by alkyl groups were studied, and the high resistance of N-CNTs to alkylation was found. Heterogeneous catalysts based on the polyoxometallate [PO₄{WO(O₂)₂}₄]^3– and N-CNTs with a low degree of nitrogen doping (≤1.8 at %) were successfully synthesized. The high efficiency of the catalysts in the liquid-phase reactions of selective oxidation of alkenes using H₂O₂ as a green oxidizer was found, and the heterogeneous nature of catalysis was confirmed.

中文翻译：

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氮掺杂碳纳米管作为多相催化剂选择性催化烯烃氧化的有效载体

摘要

合成了不同程度氮掺杂的氮掺杂碳纳米管（N-CNT）。在碳纳米管的亲水-疏水特性和它们在Н的分解活性的N碳纳米管氮的影响₂ О ₂进行了研究。研究了各种通过烷基对N-CNTs进行表面改性的方法，并发现了N-CNTs对烷基化的高抵抗力。基于多金属氧酸盐[PO ₄ {WO（O ₂）₂ } ₄ ] ^3–的多相催化剂成功地合成了氮掺杂程度低（≤1.8at％）的N-CNT。发现在使用H ₂ O ₂作为绿色氧化剂的烯烃选择性氧化的液相反应中，催化剂的效率很高，并且证实了催化的非均相性质。