【摘要】 用无溶剂结晶法纯制二苯醚 ,该方法具有高效、经济和洁净的特点。用该方法制备得到的产品 ,其结晶点能由 2 6.5 5°C上升到 2 6.85°C以上 ,用国标方法检不出苯酚的含量 ,达到和超过进口产品的品质 ,从而达到制备具有高结晶点、低酚含量二苯醚的目的。更多还原

【Abstract】 Purification of diphenyl ether by crystallization without solvent is discussed. This method has provided with the characteristics of high efficiency, economy and cleanness. The crystallizing point of the product prepared by this method rises from 26.55°C of the raw material to higher than 26.85°C, and phenol can not be detected in the product by the national standard method. Thus, the object of preparation of diphenyl ether with high crystallizing point and low phenol content has been achieved.更多还原