(560aa) Biofuel Production from Hydrotreatment of Fatty Acids Using Supported Ni/Mo Bimetallic Catalysts | AIChE

(560aa) Biofuel Production from Hydrotreatment of Fatty Acids Using Supported Ni/Mo Bimetallic Catalysts

Authors 

Chen, B. H. - Presenter, National Cheng Kung University
Lee, C. W., National Cheng Kung University
Lin, P. Y., National Cheng Kung University

Ni/Mo
bimetallic catalysts supported on zeolite ZSM-5, aka Ni-Mo/ZSM5, were successfully prepared by the wetness impregnation
method to hydrotreat fatty acids, mainly palmitic
acid, with an aim for the production of liquid alkane fuels. The contents of Ni
and Mo on Ni-Mo/ZSM5 were found from 8 wt% to 10 wt%, based on the mass of zeolite
ZSM-5 support. Various instruments, such as XRD, SEM, BET, XPS, NH3-TPD
and H2-TPR, were employed to characterize these catalysts.
Typically, the catalyzed hydrodeoxygenation (HDO) reaction of palmitic acid was
carried out in a Parr reactor at 573 K with an initial pressure of hydrogen at
35 bar at this temperature. With Ni-Mo/ZSM5 catalysts, the conversion of palmitic acid could reach near 99% at
573K after HDO reaction for 4h. Furthermore, a significant portion of
isomerized alkanes were obtained in the product as revealed by GC-MS. That is,
both hydrodeoxygenation and hydroisoermization reactions took place conjointly with
Ni-Mo/ZSM5 catalysts.

Keywords:
Biofuel,
Palmitic acid, Ni-Mo/ZSM5 catalyst, Hydrodeoxygenation (HDO).

Reaction
conditions:
T = 300 oC; PH2 = 35
bar

Reactants: 1 g Palmitic acid;   Solvent: 80 mL Dodecane;     Catalyst: 0.25 g Ni-Mo/ZSM5