Manufacturing method of p-ethylphenol
I. Introduction
p-ethylphenol is an important organic chemical raw material, which is widely used in the fields of medicine, pesticide, spice, dye and so on. Therefore, it is of great practical significance and economic value to study the manufacturing method of p-ethylphenol. In this paper, we will introduce the method of preparing p-ethylphenol from p-nitrotoluene by reduction, etherification and hydrolysis.
II. Experimental raw materials and equipment
1. Raw materials: p-nitrotoluene, ferrous sulfate, sodium hydroxide, ethanol, hydrochloric acid, etc.
2. Equipment: reaction kettle, stirrer, thermometer, reflux condenser, water separator, etc.
3. Experimental Steps
1. Reduction Reaction: Add p-nitrotoluene with ferrous sulfate and sodium hydroxide into the reaction kettle according to a certain ratio, and heat it up to a certain temperature to carry out the reduction reaction to produce p-aminophenol. Etherification reaction: add p-aminophenol and ethanol to the reactor in a certain proportion, add catalyst, heat to a certain temperature, carry out etherification reaction to produce p-aminophenetole.
3. Hydrolysis reaction: add p-aminophenethyl ether and hydrochloric acid into the reactor in a certain proportion, heat to a certain temperature, hydrolyze the reaction to produce p-ethyl phenol.
4. Post-treatment: The reaction solution was cooled to room temperature, filtered, washed and dried to obtain pure p-ethyl phenol product.
4. Experimental results and discussion
1. Experimental results: By analyzing the experimental data, the yield and purity of p-ethylphenol were obtained to meet the requirements.
2. Experimental discussion: The effects of raw material proportion, reaction temperature, reaction time and other factors on the experimental results were discussed, and the optimal process conditions were determined. Meanwhile, possible problems in the experiment were analyzed and solved.
V. Conclusion
The method of preparing p-ethylphenol by reduction, etherification and hydrolysis with p-nitrotoluene as raw material in this paper is feasible and practical. The experimental results show that the method can obtain p-ethylphenol products with high purity and good yield. Meanwhile, the possible problems in the experiment are also analyzed and solved in this paper, which provides a reference for the industrial production.
