Catalytic activity of Cu₂O micro-particles with different morphologies in the thermal decomposition of ammonium perchlorate

• Published in: Thermochimica acta Vol. 524; no. 1-2; pp. 135 - 139
• Main Authors: Heng, Bojun, Xiao, Ting, Hu, Xiaoyan, Yuan, Ming, Tao, Wei, Huang, Wei, Tang, Yiwen
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier B.V 20.09.2011; Elsevier
• Subjects: Catalysis; catalysts; catalytic activity; Catalytic reactions; Chemistry; copper; crystal structure; cuprous oxide; Exact sciences and technology; General and physical chemistry; heat production; perchlorates; scanning electron microscopy; solvents; surface area; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry; thermal degradation; X-ray diffraction; Scanning electron microscopy; Pyrolysis; Thermal decomposition; Thermogravimetry; X ray diffraction; Surface structure; Ammonium perchlorate; Copper Oxides; Structure activity relation; Cuprous oxide; Morphology; Microparticle; Ammonium Perchlorates; Thermal analysis; Catalysis; Catalyst activity
• ISSN: 0040-6031; 1872-762X
• DOI: 10.1016/j.tca.2011.07.004

Catalytic activity of cuprous oxide (Cu₂O) micro-particles with cubic, octahedral, truncated-octahedral and hollow opened sphere structures for thermal decomposition of ammonium perchlorate (AP) was investigated in this paper. Cu₂O with different morphologies were synthesized through one-pot hydrothermal method, which is based on the reduction of Cu(II) with d-(+)-glucose in an alkalic solvent. Morphology, crystal structure and specific surface area of final samples were characterized by using SEM, XRD, and BET, respectively. TG/DTA results show that the samples with different morphologies exhibit quite different catalytic activity in different stage of thermal decomposition of AP. Through comparing them, Cu₂O micro-octahedrons with {111} facets show better catalytic effect than cubes with only {100} facets, while the Cu₂O hollow microspheres enhance the high-temperature exothermic decomposition of AP significantly. The authors also discussed some underlying catalytic mechanism and offered some selection basis of catalysts in the thermal decomposition of AP.