Catalytic Conversion of Model Tars over Carbon-Supported Ni and Fe
AbstractTar removal from gasification gases is a determinant step to guarantee the operational feasibility of gasification-to-chemicals/energy systems. This study aimed to develop novel carbon-supported catalysts for the elimination of tarry aromatics (toluene, naphthalene and benzene) from gasification gases. Effects of reaction temperature (700 < T < 900 °C) and catalyst nature (Fe0 and Ni0) on the activity were assessed by considering thermo-catalytic conversion and steam reforming, under a simulated gasification gas. The catalysts (Ni and Fe) and support (AC) were characterized by X-ray diffraction (XRD), N2 physisorption, thermogravimetric analysis (TGA), transmission electron microscopy (TEM) and compositional analyses. Both catalysts and support, presented a mesoporous-like texture with a considerable high surface area (690 < SBET < 743 m2/g). Furthermore, dispersion of the metal nanoparticles (active phase) was uniform as confirmed by TEM images. Results from activity tests suggest that Ni/AC has higher effectivity for converting tars than Fe/AC, as confirmed by the low apparent activation energies (34 < Eapp < 98 kJ/mol) for naphthalene and benzene conversion between 700 and 900 °C. The conversion was 100% above 850 °C; nevertheless; below 750 °C, a sharp reduction in benzene conversion was observed, which was attributed to reversible carbon deposition. View Full-Text
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Arteaga-Pérez, L.E.; Delgado, A.M.; Flores, M.; Olivera, P.; Matschuk, K.; Hamel, C.; Schulzke, T.; Jiménez, R. Catalytic Conversion of Model Tars over Carbon-Supported Ni and Fe. Catalysts 2018, 8, 119.
Arteaga-Pérez LE, Delgado AM, Flores M, Olivera P, Matschuk K, Hamel C, Schulzke T, Jiménez R. Catalytic Conversion of Model Tars over Carbon-Supported Ni and Fe. Catalysts. 2018; 8(3):119.Chicago/Turabian Style
Arteaga-Pérez, Luis E.; Delgado, Aaron M.; Flores, Mauricio; Olivera, Patricia; Matschuk, Kimberley; Hamel, Christian; Schulzke, Tim; Jiménez, Romel. 2018. "Catalytic Conversion of Model Tars over Carbon-Supported Ni and Fe." Catalysts 8, no. 3: 119.
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