Diaper waste was calcined above 400°C after impregnated in the solution of nickel nitrate. The as-prepared diaper waste-derived materials were used as magnetic catalysts for the synthesis of glycerol carbonate (GC). Structure and catalytic ability investigations on the catalysts calcined at different temperatures indicated that calcination temperature was an important factor affecting the property of catalysts. It was found that the catalyst obtained at the calcination temperature of 700°C (named DW-Ni-700) showed the best performance. When DW-Ni-700 was used in the synthesis of GC, GC yield reached 93.2%, and the magnetic property of DW-Ni-700 facilitated the catalyst separation process. Meanwhile, DW-Ni-700 showed high reusability in the reaction. After four times reuse of DW-Ni-700, GC yield decreased less than 4%.

中文翻译：

---

用尿布废料制备用于合成甘油碳酸酯的磁性催化剂

将尿布废料浸渍在硝酸镍溶液中后，在400℃以上煅烧。所制备的尿布废料用作合成碳酸甘油酯（GC）的磁性催化剂。对在不同温度下煅烧的催化剂的结构和催化能力的研究表明，煅烧温度是影响催化剂性能的重要因素。发现在700℃的煅烧温度下获得的催化剂（称为DW-Ni-700）显示出最佳性能。当使用DW-Ni-700合成GC时，GC收率达到93.2％，并且DW-Ni-700的磁性促进了催化剂的分离过程。同时，DW-Ni-700在反应中显示出较高的可重复使用性。DW-Ni-700重复使用四次后，GC收率下降了不到4％。