Synthesis And Catalytical Study Of Inorganic Nanomaterials Using For Solid Propellant

We synthesised Ni, Cu nanometallic l and Ni-Cu doublemetallic nanomaterial without surfactant, studied the morphology and formation mechanism of samples. Meanwhile we also studied the synthesis process of CaCO3 nanoparticles and BaCO3 nanoparticles, the morphology and formation mechanism. Studying the two part of system was in order to investigate the catalytic application of these nanomaterials for ammonium perchlorate, which was one of important rocket propellent.Firstly, this work focused on a synthetic method to produce flower-like nickel nanostructures under the induction of magnetic field. Flower-like nickel nano-structures were obtained by using nontoxic reactants, nontoxic solvents, and low reaction temperature. It was improved that t amples matained better stability.We also found the samples did not oxide after a long time. We studied the reaction condition, the purity of samples and the morphology and formation mechanism of samples.And we synthesized high purity Cu nanometallic material by addition of trace Ni. And this trace Ni used as seeds to accelerate the reduction of Cu and keep Cu nanometallic pure and stable. We studied the reaction condition, the purity of samples and the morphology and formation mechanism of samples.At the same time, with the synthesis research foundation of Ni-Cu nanometallic material, we synthesized Ni-Cu doublemetallic nanomaterial by using nontoxic reactants, nontoxic solvents, and nonextra nitrogen gas. We studied the influence of reaction condition, and also proved. Ni-Cu nanometallic material was fcc structure. The average sizer of sphere samples was 50nm, and the dispersivity was good.Secondly, we prepared fusiformate CaCO3 nanoparticles through carbonating with Mg2+ existence. In the experiment,we studied that the size of CaCO3 nanoparticles changed with the velocity of carbon dioxide, the samples morphology of CaCO3 nanoparticles changed with pH value, the crystal morphology of CaCO3 nanoparticles changed with mixing speed. CaCO3 nanoparticles was hexahedronal calcite structure. The average sizer of was 100nm, and the dispersivity was good.Finally, we synthesized BaCO3 nanoparticles through a room temperature solid phase method. In the experiment,we discovered that the attrition time, the calcining heat, the reactant proportion, the amount of EDTA seemed to influence the size and and morphology of BaCO3 nanoparticles.We also studied the reaction mechanism. BaCO3 nanoparticles was orthogonal structure. The average sizer of was 500nm, and the dispersivity was good.The series of preparation process was only one of goal, the final goal was that the nanomaterials could be applicated. We added the synthesized nanomaterials to annonium perchlorater, and carried on the thermal analysis to study the catalyzed performance. The synthesized nanomaterials attributed to two kind:Ni, Cu nanometallic material and Ni-Cu doublemetallic nanomaterial was one kind,which belonged to positive catalytical effect,and the catalytical effect of Ni-Cu doublemetallic nanomaterial was better than Ni and Cu nanometallic material; CaCO3 nanoparticles and BaCO3 nanoparticles was the other kind, which belonged to negative catalytical effect, and the catalytical effect was consistent. In the actual application, we did not use the sole nanomaterials as catalyst in the rocket propellent. We usually used two and avove catalysts, in order to achieve the coordination goal and the synergism.In this paper, we not only succeedly synthesised Ni, Cu nanometallic material and Ni-Cu doublemetallic nanomaterial, but also synthesised CaCO3 nanoparticles and BaCO3 nanoparticles. And we deeply tudied and induced the reaction mechanism of every system, which provided the theory basis and the application basis of catalytical effect for annonium perchlorater. In the actual research work, limited to the experimental condition and time, still a lot of work waited for further studying and consummating. For example, we should continouly determinate the intensity of the combustion pressure, dynamics analysis and so on.