The interaction between titania and lead nitrate has been studied in molten sodium and potessium nitrates medium. The formation of tetragonal lead metatitanate has been established. The rate of the formation and the purity of PbTiO_3 are determined by presence of the intermediate lead oxinitrates ...
The approach to the synthesis of these catalysts can be the basis for development of catalytic nickel systems for commercial processing of natural gas. The catalysts were synthesized by fusing nickel nitrate with zirconium nitrate, or nickel nitrate with copper-doped aluminium nitrate followed by ...
14. These two mechanisms may lead to different soil C loss in a warmer world14,21. While the former could lead to a depletion of labile C pools, releasing more C into the atmosphere through microbial respiration if more plant-derived C is available...
6,7,50,51.Acinetobacterexhibited higher acid phosphatase activity thanA. nigerduring the 3 days in the middle of the incubation period (Fig.2A).Acinetobactersp. also showed considerable alkaline phosphatase activity, although it was lower than that ofA. niger(Fig.2B). Meanwhile, the soluble ...
It is well-known that global warming has effects on high-latitude tundra underlain with permafrost. This leads to a severe concern that decomposition of soil organic carbon (SOC) previously stored in this region, which accounts for about 50% of the world
Decomposition of lead azide (LA), pentaerythrite tetranitrate (PETN), and a laminate system composed of these substances under vibrational loading is considered. Sensitivity of these substances to impact and vibrations is determined. Sensitivity of the LA + PETN laminate system to vibrational loading...
The thermal decomposition of lead nitrate has been investigated in the temperature range from 250 to 435掳C. Information obtained from the infra-red analysis of the decomposition products indicate that the reaction proceeds via a basic nitrate or metallic nitrite structure, while gasometric analysis ...
LeadplateA new approach to the decomposition of nitrate ion using Pb metal has been developed. Removal of the oxide layer formed on the surface of Pb plate and the production of Pb powder have been achieved by in situ abrasion of Pb plate in NH4NO3 solution with an abrasive buff. NO3−...
Thermogravimetric analysis of lead nitrate without and with added cupric oxide, managanese dioxide and alumina (20 wt.%) were done. The parameters of activation were calculated using the coats-Redfern equation. Al 2 O 3 and MnO 2 decreased the energy of activation, while CuO caused an ...
The thermal decomposition of γ-irradiated lead nitrate was studied by thermogravimetry (non-isothermal conditions). The reaction order, activation energy, frequency factor and entropy of activation were computed by means of the Coats-Redfern, Freeman-Carroll, Horowitz-Metzger and the modified Horowitz-...