Ionic liquid (IL) is a type of molten salt at room temperature which are composed of anions and cations. It is a novel kind of green solvent and catalyst with excellent performance. However, it is 1imited to be widely used in different fields because of high price, large dosage, inconvenient separation. One of the effective approaches is to immobilize the ionic liquid on inorganic or organic solid material. Supported perrhenate ionic liquid was prepared using MCM-41 zeolites as carrier by chemical method in this paper. The supported ionic liquid was characterized and analyzed by FT-IR, TG, XRD and nitrogen adsorption desorption. The results showed that the ionic liquid was successfully bonded to the surface of MCM-41, and the decomposition temperature of the supported ionic liquid was between 280~680 ℃. Although the pore size and specific surface area of MCM-41 decreased after loading IL, its bulk structure was not damaged.

The regeneration of thiophene saturated ionic liquid obtained after desulfurization of gasoline were studied. Cyclopentane was used as the extractant to regenerate the ionic liquid( \[C8MIM\] BF4). The dosage of cyclopentane, extraction time and extraction temperature were examined. The optimal operation condition, where V(ionic liquid)∶V(cyclopentane)=1∶2 at 35 ℃ for 15 min were obtained. Under the optimal condition, the backextraction rate of the ionic liquid can reach 8238%. The recovered ionic liquid was further applied to the desulfurization of model oil, and the desulfurization rate can reach 62.37%. 

It is reported herein a novel debenzoylation of diaryl ketones. The effect of the additives, catalysts, and temperature were studied carefully. The results indicate that the yield of this transformation can reach up to 72% under the standard conditions∶ n(ptoluenesulfonic acid)∶n (starting material)=1∶100, n(ethylene glycol)∶n(starting material) =3∶1, toluene, 80 h under reflux. This reaction provides a new method for the debenzoylation of diaryl ketones.

Starch was reacted with polyethylene terephthalate polyethylene glycol (PET-PEG) copolymer using hexamethylenediisocyanate as a coupling agent in order to prepare new PET-PEG/ST copolymers. The obtained PET-PEG/ST was characterized by FTIR and 1HNMR spectroscopy, thermal analysis, and the water absorption and biodegradable tests. The results show that starch was attached to PET-PEG via couple reaction in the presence of hexamethylenediisocyanate. As compared to PETPEG, PET-PEG/ST has avariable thermal stability with decreasing melting temperature. PET-PEG/ST has degraded in aqueous solution with different pH under different levels, and the degradation rate of PET-PEG/ST in aqueous solution under different pH values from big to small order as follows: alkaline solution,acidic solution,neutral solution. PET-PEG/ST also tends to degrade in biologically active environments like amylase.

The porous alumina washcoat coating on cordierite honeycomb was prepared by microwave heating method. The effects of different preparation parameters on the loading, crystal composition, and pore structure of the alumina coating were studied, and then the alumina washcoat prepared was characterized by BET and SEM tests. The results indicate that the alumina washcoat prepared by microwave heating method is stable and uniform with higher Al2O3 weight ratio, larger surface area and pore volume.