本文選題：愈創(chuàng)木酚 + 乙�；���； 參考：《高校化學工程學報》2017年02期

【摘要】：以愈創(chuàng)木酚和乙酸酐為原料,在催化劑存在的條件下合成乙酰愈創(chuàng)木酚。以USY分子篩作為母體,用磷酸氫二銨改性USY分子篩,并通過實驗優(yōu)化出磷酸氫二銨改性USY分子篩的條件為:磷酸氫二銨濃度為0.132 g·m L~(-1),固液比為9:10,焙燒溫度550℃,時間12 h。經(jīng)正交試驗優(yōu)化出愈創(chuàng)木酚乙酰化的工藝條件為:n愈創(chuàng)木酚:n_((Ac)_2O)=1:1.4,催化劑質量為愈創(chuàng)木酚質量的10%,反應時間2 h,反應溫度90℃。乙酰愈創(chuàng)木酚得率為89.85%。通過反應物濃度與時間之間的關系得出反應級數(shù)n=2。由不同溫度下的反應速率常數(shù),結合Arrhenius方程求得該反應的活化能Ea=34.182k J·mol~(-1),指前因子A=24469 L·(mol·min)~(-1)。
[Abstract]:Acetylguaiacol was synthesized from guaiacol and acetic anhydride in the presence of catalyst. USY molecular sieve was modified with diammonium hydrogen phosphate with USY molecular sieve as parent material. The optimized conditions were as follows: the concentration of diammonium hydrogen phosphate was 0.132 g mL ~ (-1), the ratio of solid to liquid was 9: 10, the calcination temperature was 550 鈩，

本文編號：2055549