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首页> 外文期刊>RSC Advances >A ternary composite oxides S2O82-/ZrO2-TiO2SiO2 as an efficient solid super acid catalyst for depolymerization of lignin
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A ternary composite oxides S2O82-/ZrO2-TiO2SiO2 as an efficient solid super acid catalyst for depolymerization of lignin

机译：三元复合氧化物S2O82- / ZrO2-TiO2SiO2作为木质素解聚的有效固体超酸催化剂

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摘要

The solid, super, acid catalyst S2O82-/ZrO2-TiO2-SiO2, which has both a strong Bronsted acid and Lewis acid, was prepared and applied in lignin depolymerization. The results indicate that S2O82-/ZrO2-TiO2SiO2 is an effective catalyst for lignin depolymerisation since the liquid product was almost completely dissolved in ethyl acetate, indicating that it was comprised of mostly oligomeric lignin degradation products. The effect of hydrogenation co-catalysts (Pd/C, Pt/C and Ru/C, Rh/C) were also studied and found to improve the yield of aromatic compounds and the petroleum ether soluble fraction, which are mostly monomeric and dimeric products. The resulting yields of aromatic compounds and petroleum ether soluble products were 14.8% and 46%, respectively, when S2O82-/ZrO2-TiO2-SiO2 and Pt/C mixed catalyst was used at 310 degrees C for 24 hours. These results show that the use of a combination Bronsted and Lewis acid catalyst in combination with a hydrogenation catalyst (S2O82-/ZrO2-TiO2-SiO2 together with a noble metal catalyst) opens a practical route for efficient lignin depolymerization.
机译：制备并施加具有强铜酸和路易斯酸的固体，超级，酸催化剂S2O82- / ZrO2-TiO2-SiO 2在木质素脱聚中。结果表明，S2O82- / ZrO2-TiO 2 SiO 2是用于木质素脱聚的有效催化剂，因为液体产物几乎完全溶解在乙酸乙酯中，表明它由多元的木质素降解产物组成。也进行了研究加氢助催化剂（钯/ C，Pt / C和钌/碳，铑/ C）的效果，结果发现，提高芳族化合物的产率和石油醚可溶级分，这大部分是单体和二聚体产物。当S2O82- / ZrO2-TiO2-SiO 2和Pt / C混合催化剂在310℃下24小时时，分别所得芳族化合物和石油醚可溶产物的产生为14.8％和46％。这些结果表明，使用组合和Lewis酸催化剂与氢化催化剂（S2O82- / ZrO2-TiO 2-SiO 2的用途与贵金属催化剂一起使用，用于有效的木质素脱聚的实际途径。

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  • 来源
    《RSC Advances》 |2017年第79期|共8页
  • 作者

    Wang Huizhen; Li Wenzhi; Wang Jindong; Chang Hou-min; Jameel Hasan; Zhang Qi; Li Song; Jin Lele;

  • 作者单位

    Univ Sci &

    Technol China Lab Basic Res Biomass Convers &

    Utilizat Hefei 230026 Anhui Peoples R China;

    Univ Sci &

    Technol China Lab Basic Res Biomass Convers &

    Utilizat Hefei 230026 Anhui Peoples R China;

    Univ Sci &

    Technol China Lab Basic Res Biomass Convers &

    Utilizat Hefei 230026 Anhui Peoples R China;

    North Carolina State Univ Dept Forest Biomat Raleigh NC 27695 USA;

    North Carolina State Univ Dept Forest Biomat Raleigh NC 27695 USA;

    Chinese Acad Sci Guangzhou Inst Energy Convers CAS Key Lab Renewable Energy Guangzhou 510640 Guangdong Peoples R China;

    North Carolina State Univ Dept Forest Biomat Raleigh NC 27695 USA;

    Univ Sci &

    Technol China Lab Basic Res Biomass Convers &

    Utilizat Hefei 230026 Anhui Peoples R China;

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  • 正文语种 eng
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