水热法制备锡掺杂钨基催化剂及其催化合成己二酸

采用水热法制备了锡掺杂钨基催化剂SnO2/WO3,用于催化双氧水氧化环己酮合成己二酸,考察了催化剂用量、30%H2O2用量、反应时间、酸性配体及催化剂重复使用性等因素对己二酸收率的影响。结果表明,催化剂制备条件为n(W)∶n(Sn)=1.8∶1,500℃焙烧4 h。当反应条件为:100 mmol环己酮,1.0 g催化剂SnO2/WO3,50 mL 30%H2O2,反应5 h,己二酸收率78.4%。SnO2/WO3催化H2O2氧化环己酮合成己二酸,反应时间短,操作方便,具有较为理想的催化活性及重复使用性。

Hydrothermal preparation of tungsten-based catalyst Sn-doped for catalytic synthesis of adipic acid

Tungsten-based catalyst Sn-doped was developed which was employed to catalyze the synthesis of adipic acid from cyclohexanone oxidized. The effects of various factors such as catalyst dosage,30% hydrogen peroxide dosage,reaction time,acidic ligand,and reusability of the catalyst were all investigated.The results indicated that preparation catalyst condition indicated n（ W） ∶ n（ Sn） = 1. 8 ∶ 1,calcinating at500 ℃ for 4 h. The optimal reaction conditions were that 100 mmol cyclohexanone,50 mL 30% H2O2,1. 0 g catalyst SnO2/WO3,the yield of adipic acid could reach 78.4%. The catalyst possesses advantages of highly active,easily to operate. It also can be reused to a certain extent.