负载型磷化物催化剂的制备及其加氢脱氧性能研究

负载型磷化物催化剂的制备及其加氢脱氧性能研究目录摘要 [63]早前也获得类似的结果，并将其归因于P-OH基团产生的B酸。特别是对于含Mo的样品，酸度的急剧增加清楚地表明高比例的氧化P物种的存在，这是MoP相暴露在空气中时稳定性低的结果。此外，可以观察到Ni2P/Al-SBA-15的NH3-TPD曲线在中高温(250℃-450℃)下显示出肩峰，与载体相比NH3解吸增强。但是，对于Co2P/Al-SBA-15材料没有观察到这一现象，这表明Ni2P相具有某些酸性特征，这可能会影响其在HDO反应中的催化性能。

结论本文采用原位磷化法和等体积浸渍法制备出一系列负载型金属磷化物催化剂，通过改变磷源、Ni/P以及载体筛选出最优的负载型Ni2P催化剂。然后用该催化剂对棕榈酸甲酯进行HDO反应，并探究不同加氢反应条件对棕榈酸甲酯HDO反应性能的影响，得到最佳反应条件。最后，在最优制备条件以及最优反应条件下，改变金属相，制备不同磷化物催化剂，并探究这些催化剂对棕榈酸甲酯HDO反应性能的影响。得到的结论如下：(1)通过原位磷化法制备得到的Ni2P/Al-SBA-15催化剂，其最佳磷源为NaH2PO2，最佳Ni/P为2，最佳载体为Al-SBA-15。(2)以Ni2P/Al-SBA-15为催化剂，棕榈酸甲酯的最佳反应温度为300℃，最佳反应压力为3.0MPa，最佳反应时间为4h。(3)在Ni2P/Al-SBA-15催化剂上，棕榈酸甲酯的转化率达到100%，十五烷和十六烷的收率分别为73.4%和24.1%。但在Co2P/Al-SBA-15和MoP/Al-SBA-15催化剂上，棕榈酸甲酯虽然也完全转化，但两种主产物的收率都有所下降。因此，在棕榈酸甲酯的HDO反应中，Ni2P/Al-SBA-15催化剂表现出最优的催化性能。

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