以阔叶木浆为原料,在反应温度80℃、酸浓2.5 mol·L-1、固液比1:15的条件下,反应时间60 min,研究了Fe3+、Co2+、Al3+、Cu2+4种金属离子对纤维素酸水解的促进作用。结果表明,金属离子能促进纤维素的酸水解,其中Fe3+相对于其他金属离子的促进作用效果最佳,实验条件下,Fe3+浓度在0.4 mol·L-1时所得水解纤维素的得率为91.74%,α-纤维素含量56.99%,结晶度56.93%。 Using hardwood pulp as raw material, the reaction time was 60 min at the reaction temperature of 80 ℃, the acid concentration of 2.5 mol·L-1 and the solid-liquid ratio of 1:15. The effects of Fe3 +, Co2 +, Al3 + and Cu2 + Ions promote the hydrolysis of cellulose acids. The results showed that the metal ions promoted the acid hydrolysis of cellulose, and the promotion effect of Fe3 + was better than that of other metal ions. Under the experimental conditions, the yield of cellulose hydrolyzed at the concentration of 0.4 mol·L-1 Fe3 + was 91.74 %, α-cellulose content 56.99%, crystallinity 56.93%.