Nickel sulfide, nickel phosphide and nickel carbide catalysts for bio-hydrotreated fuel production

บทความในวารสาร

ผู้เขียน/บรรณาธิการ

กลุ่มสาขาการวิจัยเชิงกลยุทธ์

ไม่พบข้อมูลที่เกี่ยวข้อง

รายละเอียดสำหรับงานพิมพ์

รายชื่อผู้แต่ง: Phimsen S., Kiatkittipong W., Yamada H., Tagawa T., Kiatkittipong K., Laosiripojana N., Assabumrungrat S.

ผู้เผยแพร่: Elsevier

ปีที่เผยแพร่ (ค.ศ.): 2017

วารสาร: Energy Conversion and Management (0196-8904)

Volume number: 151

หน้าแรก: 324

หน้าสุดท้าย: 333

จำนวนหน้า: 10

นอก: 0196-8904

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85034045943&doi=10.1016%2fj.enconman.2017.08.089&partnerID=40&md5=af1d876ac3c608ffe7a32dfaa1644fb0

ภาษา: English-Great Britain (EN-GB)

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บทคัดย่อ

A series of nickel catalysts i.e. nickel sulfide (NiS), nickel phosphide (NiP) and nickel carbide (NiC) was investigated for hydrotreating of spent coffee oil to produce bio-hydrotreated fuel (BHF). Catalytic tests were carried out at 375–425 °C and 20–40 bar of initial H2 pressure (before heating) with reaction time of 0–3 h. The activity of the catalysts are in the order of NiC > NiP > NiS; however NiC tended to promote cracking reaction resulting in high gasoline and gaseous yields. On the other hand, although NiS gives the lowest oil conversion, it is favorable to diesel yield with lowest methanation and cracking activity. Compared with decarboxylation (DCO2) and hydrodeoxygenation (HDO), decarbonylation (DCO) was the major route for deoxygenation of coffee oil for all the catalysts. The ratio of (DCO + DCO2) to HDO (as represented by Cn-1/Cn) decreased in the order NiS > NiC > NiP. Ketones as intermediate products (ca. 3 wt%) were detected in case of NiP. They could be generated via rearrangement of alcohol and keto-enol tautomerism. Significant amount of aromatics (4 wt%) with some isomerization products (0.9 wt%) can also be observed in NiS catalyzed liquid products while trace amount of these compounds were detected for NiP and NiC catalysts. Physiochemical analysis of the diesel fraction exhibited satisfactory properties. The density and kinematic viscosity were consistent with the specification of commercial bio-hydrogenated diesel, NExBTL. Since main products are straight chain hydrocarbons, high cetane index (>110) could be achieved. © 2017 Elsevier Ltd

คำสำคัญ

Bio-hydrogenated diesel (BHD), Green diesel, Hydrotreated vegetable oil (HVO), Ni-based catalysts, Renewable liquid fuel, Waste oil