Hydrogenolysis of Diphenyl Ether Catalyzed by Collagen Fiber based N-doped Carbon Supported Ru
A N-doped carbon supported Ru catalyst based on collagen was prepared by using the immobilized tannin method combined with carbonization.Collagen fiber was chosen as a substrate due to its rich nitrogen content,and the prepared catalyst was used for the hydrogenolysis of lignin.Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy analysis showed that Ru was loaded on collagen fiber through the chelation of Ru and tannic acid,and the collagen-based carbon supported Ru catalyst(Ru/TNC)was fabricated after the carbonization.Scanning electron microscopy,transmission electron microscopy and inductively coupled plasma emission spectroscopy revealed that Ru/TNC exhibited a low Ru loading(1.14％)and porous structures.Ru nanoparticles were homogeneously loaded on the surface of carbon support with a low dimension.The hydrogenolysis results of diphenyl ether indicated that Ru/TNC exhibited higher activity as compared with the carbon supported Ru catalyst prepared by traditional impregnation method.The diphenyl ether hydrogenolysis conversion of 100％was achieved if Ru/TNC was used at 280 ℃,and all products were monomers including benzene(22.2％),cyclohexane(27.8％),cyclohexanol(35.7％),and cyclohexanone(14.3％).
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