杨笑,陈长林

• 1:南京工业大学化工学院材料化学工程国家重点实验室

摘要(Abstract)：

用浸渍法制备了磷酸根表面修饰的钨锆复合氧化物载铂催化剂(Pt/PO43--WO3-ZrO_2)。用NH3-程序升温脱附(NH3-TPD)、红外光谱(FT-IR)、X-射线衍射(XRD)、N2物理吸附-脱附(BET)、H2-程序升温还原(H2-TPR)、H2-脉冲吸附和X射线光电子能谱(XPS)分析等技术对催化剂进行表征。用水热釜考察了钨锆复合氧化物的水热稳定性,固定床反应器考察了催化剂催化甘油氢解制1,3-丙二醇的反应性能。结果表明:引入适量磷酸根可抑制水热处理过程中钨锆复合氧化物单斜相ZrO_2向四方相转变,0.72 PO43--WO3-ZrO_2样品水热处理前比表面积83 m2×g-1,水热处理后比表面积86 m2×g-1,比表面积基本不变,提高了钨锆复合氧化物的水热稳定性。增强了催化剂金属还原性,提高了催化剂H2吸附量,Pt/PO43--WO3-ZrO_2催化甘油氢解稳定性较Pt/WO3-ZrO_2催化剂显著提高。

关键词(KeyWords)： 磷酸根;钨锆复合氧化物;水热稳定性;甘油;氢解;1,3-丙二醇

Abstract:

Keywords:

基金项目(Foundation): 江苏省产学研前瞻性研究项目(BY2015005-08)

作者(Author): 杨笑,陈长林

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