27004-40-6Relevant articles and documents
A tartaric acid copper-zirconium compound and its preparation method and application (by machine translation)
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Paragraph 0025; 0036; 0040; 0044, (2017/08/25)
The invention discloses a tartaric acid copper-zirconium compound, the preparation comprises the following steps: to tartaric acid as the raw material, first with nitric acid copper reaction preparing tartaric acid copper, with the nitrate by the reaction of the tartaric acid copper-zirconium compound. Its structural formula is as follows: the invention is mainly applied in the propellant as a combustion catalyst and instability in the combustion plans the preparation. (by machine translation)
Effects of the size of nano-copper catalysts and reaction temperature on the morphology of carbon fibers
Zhang, Qian,Yu, Liyan,Cui, Zuolin
, p. 735 - 742 (2008/10/09)
In this study, carbon fibers with different morphologies, including coiled carbon nanofibers and straight carbon fibers, were obtained by the chemical vapor deposition using a Cu-catalytic pyrolysis of acetylene at 250 °C. The influences of nano-copper catalyst particle size and the reaction temperature on the morphology of carbon fibers were investigated. Under the same reaction condition, coiled carbon nanofibers generally were synthesized using nano-copper catalyst with smaller particles size, and bigger copper particles are apt to produce straight carbon fibers. With decreasing of reaction temperature to 200 °C, straight carbon fibers were obtained, instead of coiled carbon nanofibers at 250 °C. The product was characterized by field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM) and X-ray powder diffraction (XRD).
Effect of synthesis method of nanocopper catalysts on the morphologies of carbon nanofibers prepared by catalytic decomposition of acetylene
Qin, Yong,Zhang, Qian,Cui, Zuolin
, p. 389 - 394 (2008/10/09)
Carbon fibers, prepared by metal-catalyzed decomposition of hydrocarbons, e.g., acetylene, benzene, and methane, present various growth models including whisker-like, branched, bi-directional, and multidirectional types of growth. The addition of additives or a second metal to the metal catalyst, the use of a support, the pretreatment of the catalyst, and the catalyst source may have considerable effects on carbon deposition. Carbon nanofibers were synthesized by the decomposition of acetylene with nanocopper catalysts to determine the effects of synthesis method on the morphologies of carbon nanofibers obtained. Copper nanoparticles catalyzed the carbon deposition of acetylene to yield regularly coiled fibers with a novel symmetric growth type, whereas ribbon-like fibers formed over nanocopper particles prepared by hydrogen-arc plasma method. The copper nanocrystals changed from irregular or spherical shape to faceted shapes after fiber growth. The regularity of the shapes of the faceted catalyst particles included in the fibers accounted for the different morphologies of the resulting products.