Joule ( IF 39.8 ) Pub Date : 2018-04-09 , DOI: 10.1016/j.joule.2018.03.012 Zhengwen Cao , Michael Dierks , Matthew Thomas Clough , Ilton Barros Daltro de Castro , Roberto Rinaldi
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/SiO2 catalyst under H2 pressure. Notably, selectivity toward aliphatics or aromatics can simply be adjusted by changes in H2 pressure and temperature. The process renders two distinct main cuts of branched hydrocarbons (gasoline: C6-C10, and kerosene/diesel: C14-C20). As the approach is H2-intensive, we examined the utilization of pulp as an H2 source via gasification. For several biomass sources, the H2 obtainable by gasification stoichiometrically meets the H2 demand of the deep converting lignin-first biorefinery, making this concept plausible for the production of high-energy-density drop-in biofuels.
中文翻译:
深度转化木质素的生物精炼厂呈现高能量密度的燃料的融合方法
在本文中,引入了以木质素为中心的会聚方法来生产脂族或芳族生物烃。首先,通过木质素优先生物精炼工艺对杨木或云杉木材进行解构,该工艺基于木质素的早期催化转化,可产生木质素油和纤维素浆。接下来,在磷化的Ni / SiO 2催化剂的存在下,在H 2压力下,将木质素油进行催化提质。值得注意的是,通过改变H 2压力和温度,可以简单地调节对脂族或芳族化合物的选择性。该方法产生了两个不同的支链烃主要馏分(汽油:C 6 -C 10和煤油/柴油:C 14 -C 20)。由于该方法是H 2密集型,因此我们通过气化检查了纸浆作为H 2来源的利用。对于几个生物质源,将H 2通过气化得到化学计量满足ħ 2深转换木质素第一生物精炼厂的需求,使得该概念似是而非用于生产高能量密度落在生物燃料。