Chemical Engineering Department, University of Michigan, Ann Arbor, MI 48109-2136, USA.
Bioresour Technol. 2011 Jan;102(2):1899-906. doi: 10.1016/j.biortech.2010.08.013. Epub 2010 Aug 7.
We determined the influence of a Pt/C catalyst, high-pressure H2, and pH on the upgrading of a crude algal bio-oil in supercritical water (SCW). The SCW treatment led to a product oil with a higher heating value (∼42 MJ/kg) and lower acid number than the crude bio-oil. The product oil was also lower in O and N and essentially free of sulfur. Including the Pt/C catalyst in the reactor led to a freely flowing liquid product oil with a high abundance of hydrocarbons. Overall, many of the properties of the upgraded oil obtained from catalytic treatment in SCW are similar to those of hydrocarbon fuels derived from fossil fuel resources. Thus, this work shows that the crude bio-oil from hydrothermal liquefaction of a microalga can be effectively upgraded in supercritical water in the presence of a Pt/C catalyst.
我们研究了 Pt/C 催化剂、高压 H2 和 pH 值对超临界水中（SCW）藻类粗生物油升级的影响。SCW 处理使产物油的热值（~42MJ/kg）比粗生物油高，酸值低。产物油的 O 和 N 含量也较低，基本不含硫。在反应器中加入 Pt/C 催化剂可得到流动性好的烃类含量高的液体产物油。总的来说，SCW 催化处理得到的升级油的许多性质与源自化石燃料资源的烃类燃料相似。因此，这项工作表明，在 Pt/C 催化剂存在的情况下，微藻水热液化得到的粗生物油可以在超临界水中有效地进行升级。
