Cao Zhengwen, Dierks Michael, Clough Matthew Thomas, Daltro de Castro Ilton Barros, Rinaldi Roberto
Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim-an-der-Ruhr, Germany.
Department of Chemical Engineering, South Kensington Campus, Imperial College London, London SW7 2AZ, UK.
Joule. 2018 Jun 20;2(6):1118-1133. doi: 10.1016/j.joule.2018.03.012.
Herein, a lignin-centered convergent approach to produce either aliphatic or aromatic bio-hydrocarbons is introduced. First, poplar or spruce wood was deconstructed by a lignin-first biorefining process, a technique based on the early-stage catalytic conversion of lignin, yielding lignin oils along with cellulosic pulps. Next, the lignin oils were catalytically upgraded in the presence of a phosphidated Ni/SiO catalyst under H pressure. Notably, selectivity toward aliphatics or aromatics can simply be adjusted by changes in H pressure and temperature. The process renders two distinct main cuts of branched hydrocarbons (gasoline: C-C, and kerosene/diesel: C-C). As the approach is H-intensive, we examined the utilization of pulp as an H source via gasification. For several biomass sources, the H obtainable by gasification stoichiometrically meets the H demand of the deep converting lignin-first biorefinery, making this concept plausible for the production of high-energy-density drop-in biofuels.
本文介绍了一种以木质素为核心的收敛方法来生产脂肪族或芳香族生物碳氢化合物。首先，通过木质素优先生物精炼工艺对杨树或云杉木进行解构，该技术基于木质素的早期催化转化，可产生木质素油和纤维素纸浆。接下来，在磷化镍/二氧化硅催化剂存在下，于氢气压力下对木质素油进行催化提质。值得注意的是，通过改变氢气压力和温度，可以简单地调节对脂肪族或芳香族的选择性。该工艺产生两种不同的主要馏分，即支链烃（汽油：C-C，煤油/柴油：C-C）。由于该方法对氢气需求较大，我们研究了通过气化将纸浆用作氢气源。对于几种生物质来源，通过气化以化学计量方式获得的氢气满足了深度转化木质素优先生物精炼厂的氢气需求，这使得该概念对于生产高能量密度的替代生物燃料是可行的。
