酸式盐催化玉米芯水解制取糠醛的工艺优化

针对工业生产中采用稀硫酸催化玉米芯水解制备糠醛存在催化剂毒性大、腐蚀及污染严重等问题，本研究尝试采用酸式盐催化玉米芯水解制备糠醛。通过单因素试验研究了催化剂种类、反应时间、反应温度对糠醛得率的影响。确定了制取糠醛的最佳工艺条件为硫酸氢钠作催化剂、反应时间90 min、反应温度190℃，此条件下糠醛的得率达39.91%。

Optimization of the Process of Furfural Preparation via Catalytic Hydrolysis of Corncob by Acid Salt

Aiming at the existing problems such as high toxicity, severe corrosion and pollution of dilute sulfuric acid as catalyst for furfural preparation in present industry, this study attempted to prepare furfural via hydrolysis of corncob using acid salt as catalyst. The effects of catalysts type, reaction temperature, reaction time on furfural yield were investigated through single factor experiments. The optimum hydrolysis technology parameters for producing furfural were obtained as follows: hydrolysis time of 90 min, hydrolysis temperature of 190℃ and sodium hydrogen sulfate as catalyst,. Under this condition, the furfural yield reached 39.91%.