Abstract
In the catalytic synthesis reaction of p-tert-butyl methyl benzoate (MPTBBA),the catalyst may cause damage to equipment due to common shortcomings,and is difficult to be separated,which will cause certain troubles to subsequent processing.Sulfonic acid type ionic liquid is taken as the catalyst,and its acidity is characterized.The catalytic reaction performance is studied under different catalyst structures,reaction temperatures,catalyst dosages and molar ratios between feedstocks.It is found that the conversion rate of p-tert-butylbenzoic acid (PTBBA) can reach 90% after 2. 5 h of reaction by using pyridine 1,4-butane sulfolactone hydrogen sulfate ionic liquid as catalyst when reaction temperature is at 140℃,and the molar ratio of methanol,PTBBA and ionic liquid is 1 000 ∶100 ∶1.It is shown from characterization on the acidity of sulfonic acid type ionic liquid that the catalytic activity of ionic liquid is related to its amount of acid.The higher the amount of acid,the higher the catalytic activity of sulfonic acid type ionic liquid.
| Translated title of the contribution | Efficient sulfonic acid type ionic liquid catalyst for synthesis of methyl 4-tert-butylbenzoate |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 87-91 and 97 |
| Journal | Xiandai Huagong/Modern Chemical Industry |
| Volume | 43 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Jan 2023 |
| Externally published | Yes |