The interaction between ADN and (NC+NG) was studied by isothermal and non-isothermal thermogravimety. The mechanism functions and apparent activation energy and pre-exponential constant have been fitted and calculated by the Arrhenius method, and at same time compared the dates with calculated by Kissinger’s and Ozawa’s method. The result showed that using isothermal thermogravimetric analyzer method studied interaction and model function of(NC+NG)/ADN (1:1) mixture system was trusty and in reason,in selected testing temperature compared NC/NG single system and ADN single system with (NC+NG)/ADN mixture system and found that model function have not changed in evidence,apparent activation energy and activation velocity have varied, at atmospheric pressure and isothermal condition, there being interaction at double-base bond (NC/NG) with oxidizer (ADN).
Thermal dissociation reactions and mechanism of complexes of rare earth(iii) nitrates with the crown ether benzo-15-crown-5 were investigated by means of TG-ISTG, DSC, DTA and IR technique. The results have shown that the dissociation processes of the complexes consist of several steps, one of which is a fast decomposition reaction. The fast decomposition peak temperatures (DSC) of all the complexes of the lanthanides (except Pm and Tm) decrease regularly with increasing atomic number. Moreover, values of the enthalpy change of desolvation, fast and the fourth step of decomposition and the apparent activation energies of fast and the fourth step of decomposition were obtained.There has been considerable interest in the rare earth(III) complexes of crown ethers during the past several years. Their thermal behaviour has been studied in some papers [1][2][3][4], while the decomposition mechanism has been reported in few papers, especially for the complexes of the rare earth nitrates with benzo-15-crown-5. In this paper, we performed detailed investigations on the solid-state thermal behaviour of fifteen complexes of rare earth(III) nitrates (except Pm) with benzol 5-crown-5 (B 15C5) by means of TG-DTG, DSC and DTA and presented their dissociation steps and conceivable mechanism with IR as an assistant method.
Ammonium molybdate modified bentonite was prepared from bentonite using ammonium molybdate as modified agent, which was used to remove several industrial effluents. It is used in the pretreatment of monosodium glutamate wastewater, slaughtering wastewater and beer wastewater which have high concentration of COD. The suitable reaction condition is ensured and the treatment effects for the treated effluents are compared by ammonium Molybdate-modified Bentonite. The result shows that the ammonium molybdate-modified bentonite is better than other flocculants. The COD removal rate of monosodium glutamate wastewater, slaughtering wastewater and beer wastewater could reach 55.40%, 96.32%, 93.23% respectively. The treatment of slaughtering wastewater is the best and all treated effects meet the pretreatment requirement. Ammonium molybdate-modified bentonite is applied to several industrial effluents in different business. It is a new type flocculant with good flocculation effect and wide application.
The kinetic parameters of thermal explosion tests with five-second delay for 273 energetic materials were analyzed. The compensation effect exists between the two thermal explosion kinetic parameters of these energetic materials, e.g. lnA and Eb. The kinetic parameters of these energetic materials can be expressed by a single linear regression equation for the single compound or mixture under all conditions. The slopes of the regression equation for various systems are in the range from 0.1952 to 0.2413 (mol•kJ-1). The regression equation for single compound or mixture with one type of energetic material as main component has better linearity. Therefore, their “iso-kinetic temperature” Tik is close to their thermal explosion temperature Tb and the “iso-kinetic delay period”τik is also close to the 5 seconds.
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