Iridium (III) complexes have broad application prospects in luminescence detection of analyte due to advantages of large Stokes shift, high quantum yields, long luminescence lifetimes, flexible and adjustable emission spectra, and excellent optical and thermal stability. The novel iridium(III) complex Ir(ppyTPA)₃ was prepared by introducing triphenylamine substituent on 2?phenylpyridine, and the structure, luminescence and electrochemical properties of Ir(ppyTPA)₃ were characterized in detail. Then, the luminescence properties of Ir(ppyTPA)₃ were used to detect five common nitroaromatics and the detection mechanism was studied. The results show that Ir(ppyTPA)₃ has the highest detection efficiency to 3?nitrobenzoic acid with the detection efficiency constant K_SV of 19.78 L/mmol. And the detection limit is as low as 2.89×10^-3 mol/L. Spectral analysis and density functional theory calculations show that the detection mechanism of Ir(ppyTPA)₃ for the five nitroarenes was the charge transfer mechanism.

Ir(Ⅲ) complex Ir(ppy)₃ was used as luminescent probe of the detection of three nitroaromatics include 3?nitrobenzoic acid, 3?nitrobenzyl alcohol, and 3?nitrotrifluorotoluene. And the luminescent detection mechanism was studied by density functional theory calculation and spectral analysis. The results showed that 3?nitrobenzoic acid, 3?nitrobenzyl alcohol and 3?nitrotrifluorotoluene could quench the luminescence of Ir(ppy)₃ in acetonitrile, with detection efficiencies K_SV of 20.4 L/mmol, 1.8 L/mmol and 2.8 L/mmol, and the lowest detection limits are 0.155×10^-6 mol/L, 1.760×10^-6 mol/L and 1.116×10^-6 mol/L, respectively. The luminescent detection mechanism of 3?nitrobenzoic acid, 3?nitrobenzyl alcohol, and 3?nitrotrifluorotoluene of Ir(ppy)₃ is electron transfer.

For the study of variable diameter tube affects the quantity of sequential oil transportation of the refined oil, applying multiphase flow model, the 90# gasoline and 0# diesel oil as the object of alternate transportations, according to different variable diameter pipeline structure form and different tapered Angle on the oil transportation.The results show that the growth rate of the length of the mixing section decreases obviously and the length of the mixing section decreases for a short time when the mixing oil enters the sudden expansion pipe, then the length of the mixed oil section growth accelerated obviously, but inferior to the level before variable diameter and with the increase of taper Angle, the different length were mixed with different degrees of decreased; after the mixed oil section flows into reducing pipe, the length of the mixed oil section growth obviously larger, and appeared the trend of decrease, but still higher than before the variable diameter, and with the increase of tapered tube taper Angle, the length of the mixed oil section all have varying degrees of increase.

A l PW1 2O4 0 was prepared by phosphotungstic acid and Al(NO3)3•9H2O and used as catalyst to catalyze the condensation of benzaldehyde with 1,2propylene glycol using cyclohexane as water trapping reagent. The reaction condition including catalyst pretreatment temperature, amount of cyclohexane, molar ratio of starting materials, reaction time, dosage of catalyst and oil bath temperature were investigated. The results show that A l PW1 2O4 0 is a good catalyst for the condensation of benzaldehyde with 1, 2propylene glycol. The optimal reaction condition were as followed：n (alcohol)∶n(aldehyde)=2.0∶1, catalyst pretreatment at 150 ℃, 0.7 g of catalyst, 7 mL of cyclohexane and 2.6% total mass of starting material at 130 ℃ for 3 h. The conversion of benzaldehyde can reach up to 98.83% under optimal condition.

Due to equipment failures, natural disasters, supply shortage and increased demand for natural gas, the natural gas pipeline network operations department needs to distribute and adjust the supply for individual user. However, operation parameters were restricted by flowing law when natural gas flowed in the process of the pipeline system, the gas supply pressure and flow rate must also meet the requirements established by users. Based on the gas pipeline operation features, user needs and service priority, natural gas pipeline network resources optimization allocation model was put forward based on the priority service of important user to optimize the resources allocation and reduce the inefficiency utilization of natural gas and negative influence of shortage of natural gas supply. It took an actual example involving 33 pipes, 35 nodes, 3 compressor stations and the various types of users and applied the model and method, calculated the optimal operation schemes of pipeline system, which provided an important basis for operation scheduling.