以Pd/MIL-101（Cr）为催化剂，在非硫有机组分（环己烷、环己烯、1-辛烯、对二甲苯）存在的情况下，考察了反应时间、催化剂质量、反应温度等因素对脱硫效率的影响，并通过分析脱硫后Pd/MIL-101（Cr）的红外光谱阐述其作用机理。结果表明，在Pd/MIL-101（Cr）质量为0.1 g、温度为50℃、非硫有机组分占油样的质量分数为5%~10%时，脱硫效率达到最高。由红外光谱分析可知，环己烯、1-辛烯和对二甲苯会占据Pd/MIL-101（Cr）上的活性位点，而且对二甲苯还会与体系中原位产生的氧化物发生反应，使脱硫效率从76.27%降到39.07%。

Taking Pd/MIL-101(Cr) as catalyst, the effects of reaction time, catalyst dosage, reaction temperature and other factors on desulfurization efficiency are investigated in the presence of non-sulfur organic components (cyclohexane, cyclohexene, 1-octene and p-xylene).The action mechanism is described preliminarily through analyzing the infrared spectrum of Pd/MIL-101(Cr) after desulfurization.It is shown that the desulfurization efficiency reaches the highest when the dosage of Pd/MIL-101(Cr) is 0.1 g, the temperature is 50℃, and the mass fraction of non-sulfur organic components in oil sample is 5%-10%.It is known from infrared spectrum analysis that cyclohexene, 1-octene and p-xylene occupy the active sites on Pd/MIL-101(Cr), and p-xylene reacts with oxides generated in the original site of Pd/MIL-101(Cr), reducing the desulfurization efficiency from 76.27% to 39.07%.

朱悦芸(1998-),女,硕士研究生,研究方向为模拟燃油氧化脱硫,809465109@qq.com。