本文選題：愈創(chuàng)木酚 + 乙�；���； 參考：《高校化學(xué)工程學(xué)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�；墓に嚄l件為:n愈創(chuàng)木酚:n_((Ac)_2O)=1:1.4,催化劑質(zhì)量為愈創(chuàng)木酚質(zhì)量的10%,反應(yīng)時間2 h,反應(yīng)溫度90℃。乙酰愈創(chuàng)木酚得率為89.85%。通過反應(yīng)物濃度與時間之間的關(guān)系得出反應(yīng)級數(shù)n=2。由不同溫度下的反應(yīng)速率常數(shù),結(jié)合Arrhenius方程求得該反應(yīng)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：2055548