A series of water soluble N maleoyl chitosan was synthesized in an acid homogeneous solution. Their chemical structure were demonstrated by FTIR and UV spectra. The effects of the mole ratio of anhydride to amino grou...A series of water soluble N maleoyl chitosan was synthesized in an acid homogeneous solution. Their chemical structure were demonstrated by FTIR and UV spectra. The effects of the mole ratio of anhydride to amino group of chitosan in feed solution on the solubility, intrinsic viscosity() and the yield of product were studied. The results showed that the solubility of N maleoyl chitosan was greatly improved in water. The highest yield was obtained at 0 5 mole ratio of maleic anhydride to chitosan.展开更多
s This paper illustrates the reaction pattern of catalytic degradation of macromolecules in asphaltic sands.Such parameters as ionic liquid catalyst system and H+ proton donor,that affect the change of the organic pha...s This paper illustrates the reaction pattern of catalytic degradation of macromolecules in asphaltic sands.Such parameters as ionic liquid catalyst system and H+ proton donor,that affect the change of the organic phase and the mass of organic matter in residual phase of asphaltic sands,were investigated.It was found that chloroaluminate (Ⅲ) ionic liquid/H 3PO 4 systems as reaction medium was an effective catalyst system for asphaltic sands degradation.The catalytic degradation of asphaltic sands was related to the kinds of chloroaluminate (Ⅲ) ionic liquids and H+ proton donor. In [BMIM][AlCl 4]/H 3PO 4 reaction catalytic medium, the degradation of asphaltenes in the organic phase reached 16.44%, the degradation of asphaltenes in the residual phase reached 30.74%.TLC-FID analysis of asphaltic sands showed that the main degradation products were saturates and aromatics,and resin fractions as well.At a temperature close to oil-bearing formation and with absense of oxygen,the yield of H 2S reached 74%, which indicated that catalytic degradation of sulphur-containing compounds was easier.展开更多
文摘A series of water soluble N maleoyl chitosan was synthesized in an acid homogeneous solution. Their chemical structure were demonstrated by FTIR and UV spectra. The effects of the mole ratio of anhydride to amino group of chitosan in feed solution on the solubility, intrinsic viscosity() and the yield of product were studied. The results showed that the solubility of N maleoyl chitosan was greatly improved in water. The highest yield was obtained at 0 5 mole ratio of maleic anhydride to chitosan.
基金CNPC创新基金项目 (No CX40 4)四川省重点学科及油气田化学品四川省重点实验室项目 (No SJD0 413S0 0 5 )
文摘s This paper illustrates the reaction pattern of catalytic degradation of macromolecules in asphaltic sands.Such parameters as ionic liquid catalyst system and H+ proton donor,that affect the change of the organic phase and the mass of organic matter in residual phase of asphaltic sands,were investigated.It was found that chloroaluminate (Ⅲ) ionic liquid/H 3PO 4 systems as reaction medium was an effective catalyst system for asphaltic sands degradation.The catalytic degradation of asphaltic sands was related to the kinds of chloroaluminate (Ⅲ) ionic liquids and H+ proton donor. In [BMIM][AlCl 4]/H 3PO 4 reaction catalytic medium, the degradation of asphaltenes in the organic phase reached 16.44%, the degradation of asphaltenes in the residual phase reached 30.74%.TLC-FID analysis of asphaltic sands showed that the main degradation products were saturates and aromatics,and resin fractions as well.At a temperature close to oil-bearing formation and with absense of oxygen,the yield of H 2S reached 74%, which indicated that catalytic degradation of sulphur-containing compounds was easier.
