B位离子的种类对介孔La0.6Pr0.4BO3复合氧化物的催化性能影响
Study on Catalytic Properties of Mesoporous La0.6Pr0.4BO3 Composite Oxide in the High-Pressure Liquefaction of Bagasse
DOI: 10.12677/HJCET.2017.75032, PDF, HTML, XML, 下载: 1,368  浏览: 2,820  科研立项经费支持
作者: 滕俊江, 李 凝, 张晓华, 刘薛恩：广东石油化工学院化学工程学院，广东 茂名
关键词: B位离子；介孔钙钛矿；蔗渣液化；B-Site Ion； Mesoporous Perovskite； Bagasse Liquefaction
摘要: 十六烷基三甲基溴化铵(CTAB)为模板剂，以共沉淀法分别制备了介孔La0.6Pr0.4BO3 (B = Mn2+, Cu2+, Co2+, Fe3+, Ni2+)钙钛矿复合氧化物，用XRD、FI-IR、BET和程序升温等技术对复合氧化物的晶相结构、表面积、孔径分布及表面性能等进行了表征，同时在蔗渣高压液化反应中探讨了B位离子种类对介孔La0.6Pr0.4BO3催化活性和液化产物分布及液化油产率的影响。结果表明，Mn2+离子掺杂制备的介孔La0.6Pr0.4MnO3特征衍射峰相对较强，样品的结晶度较高，孔道较好，具有较大的比表面积，为21.98 m2•g−1，最可几孔径为32.27 nm，表面存在较强的氧物种传导性和碱性中心，在蔗渣高压液化反应中液化油产率为59.68%，残渣率为12.62%。液化产物主要成分是对乙基苯酚、苯酚、对苯甲醇、邻愈创木酚。
Abstract: Cationic surfactant CTAB as organic template agent mesoporous, La0.6Pr0.4BO3 (B = Mn2+, Cu2+, Co2+, Fe3+, Ni2+) perovskite-type oxide were synthesized by co-precipitation method. The crystalline structures, surface topography, superficial area, pore size distribution and surface properties were characterized by XRD, FI-IR, BET and temperature programmed technology; at the same time, the catalytic performances of B-site ions replaced of mesoporous La0.6Pr0.4BO3 perovskite and liquefaction product distributions and yield of liquefied oil in the process were studied. The results showed that Mn2+ ions replaced of mesoporous La0.6Pr0.4MnO3 characteristic diffraction peaks relatively stronger, higher degree of crystallinity of the sample, preferably channel, having a larger specific surface area, is 21.98 m2•g−1 and the most probable pore size is 32.27 nm and stronger surface conductivity and oxygen species alkaline center, the yield of liquefied oil is 59.68% and rate of residue is 12.62% on bagasse high-pressure liquefaction reaction. At the same time, the main components of liquefied products are p-ethyl phenol, phenol, p-benzyl alcohol and o-guaiacol.
文章引用：滕俊江, 李凝, 张晓华, 刘薛恩. B位离子的种类对介孔La0.6Pr0.4BO3复合氧化物的催化性能影响[J]. 化学工程与技术, 2017, 7(5): 225-235. https://doi.org/10.12677/HJCET.2017.75032

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