Four kinds of thermoregulated ionic liquids (IL_MPEG-400, IL_MPEG-600, IL_MPEG-750 and IL_MPEG-1000) were synthesized and used as the stabilizer to build the thermoregulated phase-separation catalytic system containing the Pd nanoparticles catalyst. The results showed that the Pd nanoparticles exhibits high stability in the present of thermoregulated ionic liquids, and endowed the catalytic system with a good thermoregulated phase separation property, namely, the monophasic reaction combined with a biphasic separation. The nanoparticle thermoregulated catalytic system had an excellent catalytic performance for the hydrogenation of fatty acid methyl ester, and the conversions of carbonyl group and carbon-carbon double bond in fatty acid methyl ester were 97% and 91.1%, respectively, when the reaction was carried out at 210 °C for 4 h. The product was easily separated from the catalytic system and the reusability of the separated catalytic system was good.

四种温度调节离子液体（IL _MPEG-400，IL _MPEG-600，IL _MPEG-750和IL _MPEG-1000合成）并用作稳定剂，以构建包含Pd纳米粒子催化剂的温度调节相分离催化体系。结果表明，Pd纳米粒子在存在温度调节的离子液体中表现出较高的稳定性，并赋予催化体系良好的温度调节相分离性能，即单相反应与双相分离相结合。纳米粒子温度调节催化体系对脂肪酸甲酯的氢化反应具有优异的催化性能，反应进行时，脂肪酸甲酯中羰基和碳-碳双键的转化率分别为97％和91.1％。在210°C下放置4小时。