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. 2022 Aug 4;7(32):28129–28137. doi: 10.1021/acsomega.2c02247

Table 4. Synthesis of Dimethyl Adipate Using Individual Oxides and Mixture of Oxidesa.

entry catalysts dimethyl adipate (% yield)
1 SiO2 89
2 Al2O3 84
3 Fe2O3 78
4 SiO2 65 % + 35 % Al2O3  mixture 86
5 SiO2 60 % + 35 % Al2O3  + 5 % Fe2O3 mixture 82
a

Reaction conditions: adipic acid: 1 mol, methanol: 6 mol, catalyst: 10% wt/wt, reaction time: 4 h, and reaction temperature: 200 °C.