Upgrading pyrolysis bio-oil to hydrocarbon enriched biofuel over bifunctional Fe-Ni/HZSM-5 catalyst in supercritical methanol
Upgrading pyrolysis bio-oil to hydrocarbon enriched biofuel over bifunctional Fe-Ni/HZSM-5 catalyst in supercritical methanol
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DOI：
10.1016/j.fuproc.2017.06.032
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发表时间：
2017-12-01
影响因子：
7.5
通讯作者：
Kharel, Parashu Ram
中科院分区：
文献类型：
--
作者：
Cheng, Shouyun;Wei, Lin;Kharel, Parashu Ram
虽然氢脱氧（HDO）被证明是将热解生物油转化为碳氢生物燃料的一种有前途的工艺，但催化剂效率仍然是一个挑战。研究了异相催化剂与超临界液体在生物油HDO工艺中的结合。采用双功能Fe-Ni/HZSM-5催化剂，首次将生物油在超临界甲醇中转化为碳氢生物燃料。Fe和Ni的负载没有改变HZSM-5的晶体结构，但Fe-Ni/HZSM-5催化剂的BET比表面积和总孔体积比HZSM-5显著降低。负载Fe和/或Ni的HZSM-5催化剂制备的生物燃料的理化性质如含水量、总酸值、粘度和较高热值比原料生物油有所提高。与单金属Fe/HZSM-5或Ni/HZSM-5催化剂相比，双金属Fe-Ni/HZSM-5催化剂对生物油HDO更有效，这是由于Fe和Ni对HZSM-5载体的协同作用。Fe-Ni(2)/HZSM-5催化剂制备的生物燃料烃类含量最高，达28.60%。(C) 2017 Elsevier B.V.版权所有
Although hydrodeoxygenation (HDO) is proven a promising process for upgrading pyrolysis bio-oil to hydrocarbon biofuel, catalyst efficiency remains a challenge. Integrating heterogeneous catalysts with supercritical liquid in a bio-oil HDO process was investigated in this study. Bifunctional Fe-Ni/HZSM-5 catalysts were firstly used to upgrade bio-oil to hydrocarbon biofuel in supercritical methanol. The loading of Fe and Ni did not change HZSM-5 crystalline structure, but BET surface area and total pore volume of Fe-Ni/HZSM-5 catalysts decreased significantly compared to HZSM-5 support Physicochemical properties of biofuel produced by Fe and/or Ni loaded HZSM-5 catalysts such as water content, total acid number, viscosity and higher heating value improved in comparison with raw bio-oil. Bimetallic Fe-Ni/HZSM-5 catalysts were more effective for bio-oil HDO compared to monometallic Fe/HZSM-5 or Ni/HZSM-5 catalyst, and this was attributed to the synergistic effect of Fe and Ni on HZSM-5 support. Fe-Ni(2)/HZSM-5 catalyst produced biofuel with the highest hydrocarbon content at 28.60%. (C) 2017 Elsevier B.V. All rights reserved.