Easy single-step preparation of ZnO nano-particles by sedimentation method and studying their catalytic performance in the synthesis of 2-aminothiophenes via Gewald reaction
作者： Reza Tayebee , Farzad Javadi , Gholamreza Argi
DOI: 10.1016/J.MOLCATA.2012.11.011
关键词: Catalysis 、 Wurtzite crystal structure 、 Nanoparticle 、 Chemistry 、 Chemical engineering 、 Particle size 、 Zinc 、 Nucleation 、 Gewald reaction 、 Inorganic chemistry 、 Selectivity
摘要: Abstract Zinc oxide is a multi-purpose active material with important catalytic applications. In this study, nano-sized ZnO particles were easily synthesized through sedimentation of zinc acetate di-hydrate in absolute ethanol and characterized by XRD SEM. The results indicated pure wurtzite structure the average particle size 26.9 nm for nano-particles. It was observed that nano-particles decreased while solution concentration increased. This observation would be explained considering enhancing nucleation processes at high acetate. prepared (2.5 mol%) used as catalyst fast efficient synthesis 2-aminothiophenes under solvent free conditions. three-component mixture carbonyl compound, malonodinitrile, elemental sulfur converted into corresponding 2-aminothiophene moderate to yields excellent selectivity.
elsevier.com
sci-hub.se 参考文章(30)
K. Byrappa, T. Adschiri, Hydrothermal technology for nanotechnology Progress in Crystal Growth and Characterization of Materials. ,vol. 53, pp. 117- 166 ,(2007) , 10.1016/J.PCRYSGROW.2007.04.001
Flavia C Meotti, Dagoberto O Silva, Adair R.S dos Santos, Gilson Zeni, Joao Batista T Rocha, Cristina W Nogueira, Thiophenes and furans derivatives: a new class of potential pharmacological agents Environmental Toxicology and Pharmacology. ,vol. 15, pp. 37- 44 ,(2003) , 10.1016/J.ETAP.2003.08.008
U. Pal, J. Garcia Serrano, P. Santiago, Gang Xiong, K.B. Ucer, R.T. Williams, Synthesis and optical properties of ZnO nanostructures with different morphologies Optical Materials. ,vol. 29, pp. 65- 69 ,(2006) , 10.1016/J.OPTMAT.2006.03.015
R. W. Sabnis, D. W. Rangnekar, N. D. Sonawane, 2‐aminothiophenes by the gewald reaction Journal of Heterocyclic Chemistry. ,vol. 36, pp. 333- 345 ,(1999) , 10.1002/JHET.5570360203
C. R. Gorla, N. W. Emanetoglu, S. Liang, W. E. Mayo, Y. Lu, M. Wraback, H. Shen, Structural, optical, and surface acoustic wave properties of epitaxial ZnO films grown on (0112) sapphire by metalorganic chemical vapor deposition Journal of Applied Physics. ,vol. 85, pp. 2595- 2602 ,(1999) , 10.1063/1.369577
Zhi Chen Luo, Nanostructural Zinc Oxide Hollow Spheres Catalyzed Synthesis of 3, 4-Dihydropyrimidin-2(1H)-Ones under Solvent-Free Conditions Advanced Materials Research. pp. 273- 276 ,(2011) , 10.4028/WWW.SCIENTIFIC.NET/AMR.233-235.273
M. K. Jayaraj, Aldrin Antony, Manoj Ramachandran, Transparent conducting zinc oxide thin film prepared by off-axis rf magnetron sputtering Bulletin of Materials Science. ,vol. 25, pp. 227- 230 ,(2002) , 10.1007/BF02711158
Yee-Shin Chang, Yen-Hwei Chang, In-Gann Chen, Guo-Ju Chen, Yin-Lai Chai, Synthesis and characterization of zinc titanate nano-crystal powders by sol–gel technique Journal of Crystal Growth. ,vol. 243, pp. 319- 326 ,(2002) , 10.1016/S0022-0248(02)01490-2
Changrun Guo, Lu Li, Xiaolin Yang, Zhaoqing Meng, Fei Li, Chunfeng Zhang, Zhonglin Yang, None, Protective effects of timosaponin B-II on high glucose-induced apoptosis in human umbilical vein endothelial cells. Environmental Toxicology and Pharmacology. ,vol. 37, pp. 37- 44 ,(2014) , 10.1016/J.ETAP.2013.11.009
Reza Tayebee, Fatemeh Cheravi, Mehdi Mirzaee, Mojtaba M. Amini, Commercial Zinc Oxide (Zn2+) as an Efficient and Environmentally Benign Catalyst for Homogeneous Benzoylation of Hydroxyl Functional Groups Chinese Journal of Chemistry. ,vol. 28, pp. 1247- 1252 ,(2010) , 10.1002/CJOC.201090216