Tetrathienothiophene is an important molecular unit of organic photovoltaic materials.The tetrathienoacene⁃based small molecular semiconductors, combinating a dialkylated tetrathienoacene central core with styrene end⁃capping moieties, are synthesized through Stille coupling reactions.The molecular structure of compound has been analyzed by 1H⁃NMR spectrometry.Thermogravimetric Analysis(TGA),UV⁃visible absorption spectrum(UV⁃Vis),Fluorescence emission spectrum(PL) and Electrochemical cyclic voltammetry(CV) were used to characterized the thermal properties,optical properties and electrochemical properties of the prepared compound.The compound shows UV⁃absorption peaks at 429,453 nm,and a large red shift occurs.The EHOMO=-5.57 eV was calculated by cyclic voltammetry.

Efficient storage and transportation of hydrogen are the bottlenecks limiting the development of hydrogen economy. One effective way to solve this problem is to store hydrogen in liquid organic hydrogen carriers, such as methanol, which can be released from the organic hydrogen carriers as H2 gas after catalyzed reforming process. The main challenge during this procedure is the development of catalysts capable of executing such a decomposition process. In this work, a novel organometallic compound RuHI(CO)(i⁃Pr⁃Imidazole)(PPh3)2 was synthesized and explored its catalytic applications for hydrogen production during aqueous methanol reforming. The compound was characterized by elemental analysis, infrared spectroscopy, and single⁃crystal X⁃ray diffraction for determining its cystalline structure. The results indicate that the organometallic compound, shows mononuclear structure with six⁃coordinated ruthenium ion in its network, forming the twisted octahedral configuration in the compound. It has been found that reaction conditions such as temperature, the type of alkali, the volume ratio of MeOH and H2O, have profound effects on the reaction efficiencies. Under optimized conditions (110 ℃, 8 mol/L KOH, V(MeOH)/V(H2O)=9∶1),4 μmol the catalyst produces a accumulated TON of 7 9:1 after a 14-day reaction.

In order to investigate the catalytic effect of H⁃ZSM⁃5 for silver⁃copper alloy nanoparticles,Ag ₂Cu ₁/H⁃ZSM⁃5 alloy powder catalyst was prepared and applied to low temperature NH ₃⁃SCO reaction under oxygen⁃rich conditions. The results showed that the Ag ₂Cu ₁/H⁃ZSM⁃5 exhibited the best low⁃temperature ammonia oxidation performance, and its T ₅₀ and T ₉₀ were 221 and 247 °C, respectively. The results of XRD,N ₂ physical adsorption and SEM showed that the MFI skeleton structure and the silver⁃copper alloy structure remained intact,and the silver⁃copper alloy nanoparticles were highly dispersed on the surface of H⁃ZSM⁃5.It could be seen from TEM results that the small size of silver⁃copper alloy nanoparticles (2~14 nm) and H⁃ZSM⁃5 surface had a strong force,which improved the dispersion of silver⁃copper alloy nanoparticles.The XPS and NH ₃⁃TPD results displayed that the strong interaction between the Ag ₂Cu ₁ nanoparticles and the surface of H⁃ZSM⁃5 increased the amount of active oxygen on the surface of the catalyst,enhanced the adsorption of ammonia on the surface and increased the reaction rate of ammonia oxidation.

Three kinds of molybdenum polyoxometalates using Mo8O4-26 as the anion, quaternary ammonium salts as the cation have been synthesized. And the catalysts were used in the catalysis and oxidation desulfurization of diesel fuel system with oxidant Ｈ2O2 (30%) as oxidant and extractant ［C6MIM］BF4 as extraction agent. The desulfurization of model diesel fuel was optimized by investigating different reaction conditions, such as the dosage of catalysts, reaction temperature, the ratio of ［C6MIM］BF4 and diesel fuel ,reaction time, the dosage of oxidant and so on and were applied in real diesel fuel. The results showed that the best desulfurization rate at 60 ℃ was obtained after 1 h [KG*4]under [KG*4]the [KG*4]condition of n(catalyst)/n(sulfide)=5%,V(［C6MIM］BF4)/V(oil)=1∶5，n(oxidant)/n(sulfide)=6∶1.The desulfurization rate reached 95% for the model diesel fuel (［S］o=1 164 μg/g) and 92% for the FCC diesel(［S］o=850 μg/g).

A series of Nmethylimidazolium hydrosulfate type of ionic liquids (ILs) bearing different length of alkyl chains were synthesized. The ionic liquids were applied both as extracting reagent and catalyst for the model or true oil desulfurization using hydrogen peroxide (35%) as the oxidant. The desulfurization conditions were optimized by varying extraction time, the ratio of ILs/oil, temperature and so on. Under the optimal conditions, the ILs were also used for the desulfurization of FCC gasoline and diesel. The results show that, ［C3mim］HSO ₄ has the highest desulfurization rate. The best desulfurization rate was obtained after 1.5 hours under the condition of V(［C3mim］HSO ₄)/V(H ₂O ₂ )/V(oil)=1∶1∶30 at 60 ℃ for the model oil (88.38%) and diesel (80%). The sulfur content of FCC gasoline has decreased to 10 μg/g below, which shows a very promising perspective for industrial applications.