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用原位 H 控制 kraft 木质素催化解聚对化学品的选择性。

Controlling the selectivity to chemicals from catalytic depolymerization of kraft lignin with in-situ H.

机构信息

School of Environmental Science and Engineering, State Key Lab of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, PR China.

School of Environmental Science and Engineering, State Key Lab of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, PR China.

出版信息

Bioresour Technol. 2018 Sep;264:1-6. doi: 10.1016/j.biortech.2018.03.062. Epub 2018 Mar 15.

DOI:10.1016/j.biortech.2018.03.062
PMID:29778802
Abstract

Catalytic depolymerization of kraft lignin was successfully carried out in isopropanol/water mixture system over Rh/LaO/CeO-ZrO catalyst at 373 °C for 2 h with Fe as reductant. The selectivity of in-situ H was increasing from 67 wt% to 98 wt% by changing the proportion of isopropanol and water with metal Fe. A one-to-one correspondence was established between liquid products distribution and H. It was an efficient method for predicting the composition of the liquid oil by H selectivity detection or converting kraft lignin to desirable liquid products optionally, which administered to reduce the dependence on the specific catalysts. Other temperatures and catalysts were a viable option for the relationship.

摘要

在异丙醇/水混合体系中,使用 Rh/LaO/CeO-ZrO 催化剂,在 Fe 作为还原剂的条件下,于 373°C 下成功地进行了 kraft 木质素的催化解聚。通过改变异丙醇和水的比例,原位 H 的选择性从 67wt%增加到 98wt%。液体产物分布与 H 之间存在一一对应关系。通过 H 选择性检测或有选择地将 kraft 木质素转化为理想的液体产物,这是一种有效预测液体油组成的方法,有助于减少对特定催化剂的依赖。其他温度和催化剂也是这种关系的可行选择。

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