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[求助] 【求助】重复2013年Nanoscale文献合成Fe3O4时，发现柠檬酸钠不溶于二乙二醇，怎么办？已有2人参与

重复文献One-step synthesis of monodisperse, water-soluble ultra-small Fe3O4 nanoparticles for potential bio-application,Nanoscale, 2013, 5, 2133
文献步骤为In a typical synthesis of 3.1 nm Fe3O4 nanoparticles, anhydrous FeCl3 (4 mmol) was first vigorously mixed with 40 mL of DEG to form a clear solution. Then, Na3Cit (1.6 mmol) was added and the mixture was heated at 80 °C with stirring to form a clear solution. After dissolving anhydrous NaOAc (12.0 mmol) in the above solution, the mixture was transferred into a Teflon-lined stainless-steel autoclave (100 mL capacity) and sealed in air. Following this, the autoclave was kept at 200 °C for 6 h. After being allowed to cool naturally to room temperature, the black products were collected by centrifugation (12 000 rpm, 30 min)and washed with ethanol three times.
就是把无水氯化铁溶解于DEG中形成清液，然后加入柠檬酸钠置于80°C中水浴至澄清，最后加入乙酸钠，混合均匀转移至反应釜中200°C反应6h。。。我们实验室没有无水的氯化铁，我就用六水的来试试，结果能溶解，但是柠檬酸钠就溶解不了，80°C搅拌1h都溶解不了，超声过也没变化，加入乙酸钠后，乙酸钠溶解了一部分。。。现在应该怎么办啊？做不好第一步就没法转移进反应釜了都。。。跪求大神帮忙~~~

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