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本文以研究环境友好型双酚芴合成工艺为目的,首先分别考察了磷钨杂多酸、固载杂多酸、阳离子交换树脂、改性树脂等催化剂的效果,最终确定以改性树脂作为催化剂合成双酚芴。合成过程中用沸水替代复合溶剂进行后处理,并考察了催化剂用量、反应时间、温度、酚酮摩尔比等因素对双酚芴收率的影响。结果表明,当酚酮摩尔比为10∶1,催化剂用量占总物料的16%,反应温度105℃,反应时间10 h时,双酚芴单程反应收率和纯度最佳。与传统生产工艺相比,本工艺对设备材质要求低,催化效率高,副反应少,后处理简单,且催化剂可回收利用,具有明显的经济效益与环境生态效益优势。
In this paper, the purpose of this study was to study the synthesis of environment-friendly bisphenol fluorene. Firstly, the effects of heteropolyphosphoric acid, heteropoly acid, cation exchange resin, modified resin and other catalysts were investigated respectively. Finally, the modified resin was used as catalyst Bisphenol fluorene synthesis. In the synthesis process, boiling water was used instead of the composite solvent for post-treatment. The effect of catalyst dosage, reaction time, temperature and molar ratio of phenol to ketone on the yield of bisphenol fluorene was also investigated. The results showed that bisphenol fluorene had the best single-pass reaction yield and purity when the molar ratio of phenol to ketone was 10:1, the amount of catalyst was 16% of the total amount, the reaction temperature was 105 ℃ and the reaction time was 10 h. Compared with the traditional production process, the process has low material requirements, high catalytic efficiency, low side reaction, simple post-treatment, and recyclable catalyst, which has obvious advantages of economic benefits and environmental and ecological benefits.