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Aluminum nanopowders coated with oleic acid (nmAl+OA), perfluorotetradecanoic acid (nmAl+PA) and nickel acetylacetonate (nmAl+NA) were prepared. The combustion characteristics of hydroxyl terminated polybutadiene (HTPB) composite solid propellants containing different coated aluminum nanpowders were investigated. The result shows that the burning rate of the propellant sample containing nmAl+NA is the highest at different pressure, the maximum burning rate is up to 26.13 mm·s-1 at 15 MPa. The burning rates of propellant samples containing nmAl+OA and nmAl+PA are almost the same at different pressures, and higher than the propellant samples containing untreated aluminum nanopowders only at the pressure range of 10 ~ 15 MPa. The flame brightness of different propellants under different pressure is not the same. The flame brightness is increased with the pressure increasing. The flame center zone brightness of the propellant containing nmAl+PA and nmAl+NA is brighter under 4 MPa, and the brightness of nmAl+NA is the brightest. The surface coating of aluminum nanopowder has little effect on the combustion flame temperature of solid propellant. The burning surface temperature increases with the pressure increasing.

The kinetic equation describing the thermal decomposition reaction of NNHT obtained by TG‐DTG data, integral isoconversional non‐linear method and integral method of treating TG‐DTG curves is ${{\rm{d}}\alpha /{\rm{d}}t = 10^{12.86} (1 - \alpha {\rm{)}}^{{3 \over 2}} {\rm{e}}^{ - 1.5849 \times 10^4 /T} }$. The specific heat capacity (Cp) of NNHT was determined with the continuous Cpmode of the microcalorimeter. The equation of Cp(T) was obtained. The standard molar heat capacity of NNHT was 218.41 J mol−1K−1at 298.15 K. With the help of the onset temperature (Te) and maximum peak temperature (Tp) from the non‐isothermal DTG curves of NNHT at different heating rates (β), the apparent activation energy (EKand EO), and the pre‐exponential constant (AK) of the thermal decomposition reaction obtained by Kissinger’s method and Ozawa’s method, Cpobtained by microcalorimetry, density (ρ) and thermal conductivity (λ), the decomposition heat (Qd, taking half‐explosion heat), Zhang‐Hu‐Xie‐Li’s formula, Smith’s equation, Friedman’s formula, Bruckman‐Guillet’s formula, and Wang‐Du’s formulas, the values (Te0and Tp0) of Teand Tpcorresponding to β→0, thermal explosion temperature (Tbeand Tbp), adiabatic time‐to‐explosion (tTIad), 50 % drop height (H50) of impact sensitivity, critical temperature of hot‐spot initiation (Tcr), thermal sensitivity probability density function [S(T)] versus temperature (T) relation curves for spheroidic NNHT with radius of 1 m surrounded with ambient temperature of 300 K, peak temperature corresponding to the maximum value of S(T) versus Trelation curve (${T_{S(T){\rm{max}}} }$), safety degree (SD), and critical ambient temperature(Tacr) of thermal explosion of NNHT are calculated. The following results of evaluating the thermal safety of NNHT are obtained: TSADT=Te0=453.34 K, TSADT=Tp0=454.86 K, Tbe=462.68 K, Tbp=467.22 K, tTIad=1.03 s, H50=17.69 cm, Tα=461.4 K. SD=72.74 %, PTE=27.26 %, and Tacr=321.96 K.

A novel method for the synthesis of N-monosubstituted aniline and its derivatives via β-cyclodextrin (CD) host–guest complexes has been presented. The mild reaction gives the title compounds with high selectivity in good yields of 90–98%.

The solubility property of the ternary complex Cr(NO 3 ) 3 -methionine (Met)-H 2 O has been investigated in the whole concentration range by phase equilibrium method, and the phase diagram has been constructed. It was indicated that the new complexes of Cr(Met)(NO 3 ) 3 ·2H 2 O (D) and Cr(Met) 2 (NO 3 ) 3 ·2H 2 O (E) exist in the system of Cr(NO 3 ) 3 -Met-H 2 O. These complexes that are congruently in water have not been reported in literature. Under the guidance of the phase diagram, the two complexes have been prepared and characterized by chemical analysis, elemental analysis, IR and TG-DTG. Their combustion energies have been determined by a RBC-type I rotating-bomb calorimeter, and their standard enthalpies of formation, Δ f H m ° , have been calculated which are −1842.01±2.13 and −1136.16±4.45 kJ mol, respectively.