为了开拓镁资源高值化开发的新路径，以六水氯化镁为镁源，分别与D，L-酒石酸、D-酒石酸、L-酒石酸反应，在温和的条件下一步合成了3种酒石酸镁[Mg（D，L-tart）（H₂O）₂·3H₂O（Ⅰ）、Mg（D-tart）（H₂O）·1.5H₂O（Ⅱ）、Mg（D-tart）（Ⅲ）]。结果表明，在常温水溶液体系中合成了产品Mg（D，L-tart）（H₂O）₂·3H₂O（Ⅰ），最佳合成条件为反应温度-5℃、pH 8.00且体系中乙醇体积分数达到0.36时反应1 h；通过水-乙醇混合溶剂合成了产品Mg（D-tart）（H₂O）·1.5H₂O（Ⅱ），最佳反应条件为反应温度60℃、pH为6.00~7.00且体系内乙醇体积分数达到0.46时反应24 h；分别在温和的水热条件下或水-DMAC混合溶剂体系中合成无结晶水的产品Mg（D-tart）（Ⅲ），当DMAC体积分数达到0.55时产物Mg（D-tart）（Ⅲ）达到最佳产率超过94%。同时考察了合成条件对产物晶体形貌及收率的影响。

Focusing on the high-value development of magnesium resources, magnesium chloride hexahydrate is used as magnesium source to react with D, L-tartaric acid, D-tartaric acid, and L-tartaric acid, respectively, to synthesize Mg(D, L-tart)(H₂O)₂·3H₂O (Product I), Mg(D-tart)(H₂O)·1.5H₂O (Product Ⅱ), and Mg(D-tart) (Product Ⅲ) under mild conditions.In the normal temperature aqueous solution system, the product I is synthesized, and the best synthesis conditions for Product I are as follows:reaction temperature is -5℃, pH=8.00, the ethanol volume fraction in the system reaches 0.36, and the reaction lasts for 1 h.Product Ⅱ is obtained by using water-ethanol mixing as solvent, and the best reaction conditions are as follows:reaction temperature is 60℃, pH=6.00-7.00, the ethanol volume fraction in the system is 0.46, and the reaction lasts for 24 hours.Product Ⅲ can be prepared under mild hydrothermal conditions or water-DMAC mixed solvent system.The best yield of Product Ⅲ reaches over 94% when the volume concentration of DMAC is 0.55.The influences of the synthesis conditions on the crystal morphology and yield of the products are also investigated.

李欣阳(2000-),女,硕士生,研究方向为海水镁资源利用,lxy200000@126.com