Nanometer sized neodymium oxide has been synthesized by humid solid state reaction at room temperature, and characterized by scanning electron microscope, laser light scattering and X ray diffraction. The effects of n...Nanometer sized neodymium oxide has been synthesized by humid solid state reaction at room temperature, and characterized by scanning electron microscope, laser light scattering and X ray diffraction. The effects of nanometer sized neodymium oxide on catalyzing thermal decomposition reaction of hexogen (cyclotrimethylenetriamine, RDX) and absorbent powder (nitrocellulose absorbed nitroglycerin, NC/NG) have been investigated by DSC method. The mechanism of these catalytic reactions has also been proposed. The experimental results show that nanometer sized neodymium oxide can catalyze the decomposition reaction of RDX and NC/NG effectively. The experimental results further suggest that nanometer sized neodymium oxide is a potentially useful combustion catalyst of nitroamine propellant.展开更多
The nanoparticle Pb(Ⅱ)-Phtalate complex was synthesized by liquid dispersion deposition method using Pb(Ac)2·3H2O and potassium acid phthalate as the reactant. The nanoparticle complexes were characterized with ...The nanoparticle Pb(Ⅱ)-Phtalate complex was synthesized by liquid dispersion deposition method using Pb(Ac)2·3H2O and potassium acid phthalate as the reactant. The nanoparticle complexes were characterized with TEM, XRD, TG, DSC and IR. The composition of the nanoparticle PbPht complex was determined by chemical and elemental analysis. The catalytic performance of nanoparticle complex on the combustion of RDX-CMDB propellant was investigated. The results showed the average particle size of complex were about 50 nm. The nanoparticle Pb(Ⅱ)-Phtalate complex can enhance burning-rate of propellant by 135%, and lower the pressure exponent by 74%.展开更多
文摘Nanometer sized neodymium oxide has been synthesized by humid solid state reaction at room temperature, and characterized by scanning electron microscope, laser light scattering and X ray diffraction. The effects of nanometer sized neodymium oxide on catalyzing thermal decomposition reaction of hexogen (cyclotrimethylenetriamine, RDX) and absorbent powder (nitrocellulose absorbed nitroglycerin, NC/NG) have been investigated by DSC method. The mechanism of these catalytic reactions has also been proposed. The experimental results show that nanometer sized neodymium oxide can catalyze the decomposition reaction of RDX and NC/NG effectively. The experimental results further suggest that nanometer sized neodymium oxide is a potentially useful combustion catalyst of nitroamine propellant.
文摘The nanoparticle Pb(Ⅱ)-Phtalate complex was synthesized by liquid dispersion deposition method using Pb(Ac)2·3H2O and potassium acid phthalate as the reactant. The nanoparticle complexes were characterized with TEM, XRD, TG, DSC and IR. The composition of the nanoparticle PbPht complex was determined by chemical and elemental analysis. The catalytic performance of nanoparticle complex on the combustion of RDX-CMDB propellant was investigated. The results showed the average particle size of complex were about 50 nm. The nanoparticle Pb(Ⅱ)-Phtalate complex can enhance burning-rate of propellant by 135%, and lower the pressure exponent by 74%.
