A highly active and robust catalyst composed of Ru nanoparticles highly dispersed on zeolite H-beta was developed for transforming furfural into 3-acetyl-1-propanol (3-AP) in good yield (81%)under mild conditions (80 °C, 1 MPa H 2 ). Both the support nature and the preparation methods had significant impacts on the dispersion of Ru, eventually on the yield of 3-AP. Ion-exchange method proved best for obtaining the highly active and selective catalyst for this reaction. Moreover, the catalyst can be regenerated easily by calcination and reduction. This catalyst was further explored for the one-pot conversion of xylose and xylan to 3-AP with a yield of 46% and 31%, respectively, thus opening a new feasible pathway from biomass to valuable fine chemicals.
To explore why the use of furfural as a transformer oil-paper insulation aging characteristic is problematic in real world application, we developed a method for the simultaneous determination of furfural, furoic acid, and maleic acid in transformer oil by reversed-phase vortex-assisted liquid–liquid microextraction combined with high-performance liquid chromatography. The conditions for the proposed method were optimized, and the obtained extract can be directly analyzed by high-performance liquid chromatography. The detection limits (signal-to-noise ratio = 3) of the method ranged from 1.0 to 4.6 μg/L, the enrichment factors for furfural, furoic acid, maleic acid, and fumaric acid were 4.6, 25.1, 15.6, and 17.5, respectively, and the recovery rates for three analytes (fumaric acid was undetected) range from 82.1 to 106.2%. The contents of furfural, furoic acid, and maleic acid resulted from accelerated aging of transformer insulation oil-paper were measured using the present method for the first time, and the aging samples were analyzed by liquid chromatography with mass spectrometry for the identification of furoic acid and maleic acid in the aging transformer oil samples. Using the optimal method, the target products of samples at different aging time were tracked and measured.
危险品化学品经营许可证（带存储）