4.7 Article

Hydrodenitrogenation of fast pyrolysis bio-oil derived from sewage sludge on NiMo/Al2O3 sulfide catalyst

期刊

FUEL PROCESSING TECHNOLOGY
卷 101, 期 -, 页码 10-15

出版社

ELSEVIER
DOI: 10.1016/j.fuproc.2012.03.012

关键词

Bio-oil; Sewage sludge; Hydrodenitrogenation; Sulfided NiMoP/Al2O3 catalyst

资金

  1. Japan Ministry of Environment

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Sulfided, phosphorus-added NiMo/Al2O3 catalyst was used for hydrodenitrogenation (HDN) of bio-oil derived from sewage sludge. The as-received bio-oil samples contained approximately 6% nitrogen. The bio-oil was dissolved in various solvents prior to hydrotreatment and the removal of nitrogen compounds was evaluated. The HDN of bio-oil dissolved in xylene at 350 degrees C over phosphorus added NiMo/Al2O3 resulted in a complete denitrogenation of bio-oil and high yield of aliphatic hydrocarbon containing product with moderate heating value. Bio-oil dissolved in non-polaric solvent (xylene) showed 2-3 times higher nitrogen removal than that of protic solvents due to the competition between denitrogenation and deoxygenation. This study reveals that sulfided NiMo/Al2O3 catalyst is an efficient approach to remove nitrogen heteroatom compounds prior to further upgrading bio-oil derived from sewage sludge. (C) 2012 Elsevier B.V. All rights reserved.

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