Chemical Engineering Department, Faculty of Industrial Technology, Sepuluh Nopember Institute of Technology, Indonesia.
Bioresour Technol. 2011 Oct;102(19):9267-71. doi: 10.1016/j.biortech.2011.06.066. Epub 2011 Jun 23.
Sub-critical or supercritical water was utilized for the degradation of glycerol in an environmentally benign reaction. The reaction was carried out in a batch reactor in the temperature range of 473-673 K, pressure of 30 MPa, and reaction time of 20-60 min. The effects of temperature and reaction time were observed. The degradation of glycerol produced acetaldehyde, acrolein, allyl alcohol and un-identified products. The highest yield of acrolein, acetaldehyde and allyl alcohol were 0.20, 7.17, 96.69 mol%, respectively. Glycerol conversion was 99.92 mol%. While acetaldehyde was formed only in sub-critical water and allyl alcohol only in supercritical water, acrolein was formed in both. The kinetics of the global reaction displayed a pseudo-first-order. The activation energy at subcritical water was 39.6 kJ/mol. Based on the results, this method could be an efficient method for glycerol degradation because the high conversion of glycerol was obtained.
亚临界或超临界水被用于在环境友好的反应中降解甘油。反应在间歇式反应器中进行，温度范围为 473-673 K，压力为 30 MPa，反应时间为 20-60 分钟。观察了温度和反应时间的影响。甘油的降解生成了乙醛、丙烯醛、烯丙醇和未鉴定的产物。丙烯醛、乙醛和烯丙醇的最高产率分别为 0.20、7.17、96.69 摩尔%。甘油转化率为 99.92 摩尔%。虽然乙醛仅在亚临界水中形成，而烯丙醇仅在超临界水中形成，但丙烯醛在这两种条件下都形成。总反应的动力学呈现出拟一级反应的特征。亚临界水中的活化能为 39.6 kJ/mol。基于这些结果，由于甘油的高转化率，这种方法可能是甘油降解的有效方法。
