A novel supramolecular compound 2,2 '-bipyridyl-phosphotungstic acid: synthesis and catalysis

作者：Wang Qiong Sheng; Wang Shi Ming^*; Lin Shan

来源：Carbohydrate Research, 2009, 344(5): 679-682.

DOI：10.1016/j.carres.2009.01.010

• 2,2 '-Bipyridyl
• Phosphotungstic acid
• Catalysis
• Degradation
• Chitosan
• H(2)O(2)

A new supramolecular compound (C(10)H(8)N(2))(3.2)center dot H(3)PW(12)O(40)center dot 25.6H(2)O (Bipy-PW(12)) was synthesized by self-assembly design, and characterized by elemental analysis, Fourier-transform infrared spectra (FTIR), and (31)P NMR spectra. Bipy-PW(12) can effectively catalyze oxidative degradation of chitosan with H(2)O(2) in heterogeneous phase. To obtain water-soluble chitosan with an average molecular weight of 5000, the optimum reaction conditions were determined as follows: reaction temperature, 80 degrees C; reaction time, 13 min; H(2)O(2) concentration, 2.7 mol/L: and mass ratio of Bipy-PW(12) to chitosan, 0.01.

• 出版日期2009-3-31
• 单位福建师范大学