High efficient HKUST-1 membrane over paper-like steel fibers for direct catalytic wet peroxide oxidation of phenol

摘要

A HKUST-1 metal-organic framework membrane was constructed on the high voidage three-dimensional paperlike stainless steel fibers (PSSF) and was applied for the catalytic wet peroxide oxidation (CWPO) of phenol in a structured fixed bed for the first time. The chemical structure, surface areas, thermal stability of the obtained HKUST-1 membrane/PSSF support were characterized by using SEM, XRD, XPS, TGA and FT-IR. The results indicated that the HKUST-1 membrane/PSSF showed an intact morphology with octahedron crystal and a specific surface area of 376.72 m(2) g(-1), and it was stable in the air before 320 degrees C. The effects of the temperature, the catalyst bed height, and the feed flow rate on the catalytic performance of the membrane were investigated by monitoring the conversion of phenol, TOC, H2O2, respectively. Under the optimum condition of 3 cm bed height, 80 degrees C of catalytic temperature, 2 mL min(-1) of the feed flow rate, the conversion of phenol and TOC could reach to 100% and 70%, respectively. The HKUST-1 membrane/PSSF could maintain a phenol conversion of 80% and a TOC conversion of 39% after being used for three times.

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