A structural model of carbon nanocoils (CNCs) on the basis of carbon nanotubes (CNTs) was proposed. The Young’s moduli and spring constants of CNCs were computed and compared with those of CNTs. Upon elongation and compression, CNCs exhibit superelastic properties that are manifested by the nearly invariant average bond lengths and the large maximum elastic strain limit. Analysis of bond angle distributions shows that the three-dimensional spiral structures of CNCs mainly account for their unique superelasticity.

A new practical and efficient route was developed for the synthesis of 6,7-dihydro-5H-cyclopenta[b]pyridine, which is a key intermediate of cefpirome. Leading to the formation of the corresponding product, nucleophilic addition, acetylization, Vilsmeier cyclization reaction and dechlorination were employed under mild reaction conditions by using commercially available cyclopentanone and benzylamine as raw materials. The total yield of this newly developed synthetic route for the target product was 43.15% with 99.7% of purity (HPLC). The structure of target molecular was confirmed by LC-MS and 1H NMR spectrum.

Hydrazine hydrate catalytic reduction (HHCR) is a green, eco-friendly method to reduce aromatic nitro compound to aromatic amine. Fe-Ni/C composite catalyst for HHCR was prepared. Preparation conditions of Fe-Ni/C composite catalyst were investigated taking o-chloronitrobenzene’s hydrazine hydrate catalytic reductions as the examples. Experimental results showed that the optimal conditions were as follows: preparation temperature is 50 °C, catalyst carrier is nitric acid treated activated carbon, w(Fe) is 5% and w(Ni) is 0.2%. During the preparation, ultrasonic treatment is also helpful to improve catalytic efficiency of Fe-Ni/C composite catalyst. The newly prepared Fe-Ni/C composite catalyst has combined the advantages of noble metal catalyst and iron-based catalyst and features good reduction selectivity and high catalytic efficiency.

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Lemonile is a new kind of spice. The new technology for synthesis of lemonile from citral by catalytic ammoxidation has been investigated. Experimental results showed the optimal synthetic conditions are as follows. The molar material ratio n(H2O2):n(Citral) is 3:1, solvent for the reaction is isopropanol, dosage of the catalyst CuCl is 3% (wt, calculated by citral), the drop-feeding temperature and time for hydrogen peroxide are 10 °C-14 °C and 3 hrs, respectively; after hydrogen peroxide being drop-fed into the reaction system, the reaction should be continued for 4 hrs. Lemonile yield is 91.2% and purity is 98.5% (detected by GC) under the optimal conditions. This new one-step liquid phase catalytic ammoxidation technology is a green synthesis way for lemonile. The structure of the product has been confirmed by GC-MS.