Catalytic upgradation of bio-oil over metal supported activated carbon catalysts in sub-supercritical ethanol

被引：28

作者：

Baloch, Humair Ahmed ^{[1
]}

Nizamuddin, Sabzoi ^{[1
]}

Siddiqui, M. T. H. ^{[1
]}

Riaz, Sajid ^{[2
]}

Konstas, Kristina ^{[3
]}

Mubarak, N. M. ^{[4
]}

Srinivasan, M. P. ^{[1
]}

Griffin, G. J. ^{[1
]}

机构：

[1] RMIT Univ, Sch Engn, Melbourne, Vic 3000, Australia

[2] Edith Cowan Univ, Sch Engn, Joondalup, WA 6027, Australia

[3] CSIRO Mfg, Private Bag 33, Clayton, Vic 3169, Australia

[4] Curtin Univ, Fac Sci & Engn, Dept Chem Engn, Miri 98009, Sarawak, Malaysia

来源：

JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING | 2021年 / 9卷 / 02期

关键词：

Upgrading; Catalysts; Catalytic upgrading; Sub-supercritical ethanol;

D O I：

10.1016/j.jece.2021.105059

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The bio-oil was upgraded in sub-supercritical ethanol using metal supported platinum on activated carbon (Pt/AC) and palladium on activated carbon (Pd/AC) as catalysts. The supercritical upgrading process revealed more effective process compared to the subcritical conditions. Esterification during catalytic upgrading of bio-oil remained prominent which facilitates the conversion of acids present in bio-oil into esters in sub-supercritical ethanol. In addition, heavy compounds of crude bio-oil cracked into lighter compounds in the presence of catalysts. Furthermore, the changes in the upgraded bio-oil relative to crude bio-oil was extensively investigated through higher heating value (HHV), elemental analysis, solution pH, chemical composition (GC-MS), chemical functional groups (FTIR), and C-13 and H-1 nuclear magnetic resonance spectroscopy (NMR). The chemical composition analysis showed a significant decrease in acid fractions in sub-supercritical upgrading process, hence the solution pH varied from 2.5 in bio-oil to 5.3 after supercritical reaction. The HHV of bio-oil increased from 28.55 to 36.4 MJ/kg. This research has shown that crude bio-oil can be efficiently upgraded with carbonsupported metal catalysts in a sub-supercritical upgrading process.

引用

页数：11

共 54 条

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