Modification of mesoporous alumina as a support for cobalt-based catalyst in Fischer-Tropsch synthesis

Mahato

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

et al. 2021

The present study focuses on the catalytic conversion of syngas (CO + H2) through Fischer–Tropsch (FT) route using two identically prepared 0.1 wt.% palladium promoted Mesoporous Alumina (MA) and SBA–15 supported Co (15 wt.%) catalysts. The Fischer–Tropsch activity is performed in a fixed bed tubular reactor at temperature 220 °C and pressure 30 bar with H2/CO ratio ~2 having Gas Hourly Space Velocity (GHSV) of 500 h−1. Detail characterizations of the catalysts are carried out using different analytical techniques like N2 adsorption-desorption, Temperature-programmed reduction with hydrogen (H2-TPR), Temperature-programmed desorption with NH3 (NH3-TPD), X-Ray Diffraction (XRD), and Transmission Electron Microscopy (TEM). The results show that the SBA–15 supported catalyst exhibits higher C6–C12 selectivity (57.5%), and MA supported catalyst facilitates the formation of higher hydrocarbons (C13–C20) having a selectivity of 46.7%. This study attributes the use of both the support materials for the production of liquid hydrocarbons through FT synthesis.

Section: N 2 Adsorption-desorption Isothermmentioning

confidence: 99%

Fischer–Tropsch synthesis over Pd promoted cobalt based mesoporous supported catalyst

Mahato

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

et al. 2021

“…Temperature, pressure and H 2 /CO ratio are three effective factors in the process of producing hydrocarbon derivatives in FT synthesis [14] and their increase and decrease have a serious impact on the degree of selectivity of the products. Table 1 [15 -27] describes the investigations were performed by researchers in various operating conditions.…”

Section: The Function Of Iron Catalyst In Different Operating Conditionmentioning

confidence: 99%

Selectivity Modeling of Synthesis Gas Reaction over the Iron Catalyst and Optimization Products

Atashi¹,

Veiskarami²

2018

TOCENGJ

Background:Among all of the consumable energy, the liquid fuel is very important. The use of the various technologies to produce this expensive material will be increasing day by day. Materials & Methods:The Fischer-Tropsch Process is one of these technologies. In this catalytic process, a lot of products are produced, therefore, it is always steered to the production of favorable products. For this reason, in order to predict the performance of iron-based catalysts, based on the three factors;pressure, temperature and H 2 /CO ratio, the selectivity models for the products were obtained. Then, the best possible conditions for the highest production of hydrocarbons were calculated which are used in the designing of engineering equipment. Result & Conclusion:The optimal condition for the maximum production of total hydrocarbons achieved was set as P=1 MPa, H 2 /CO=1, and T=542 K.

“…Different XTL (X to liquid fuels) technologies, including natural gas (GTL), coal (CTL), biomass (BTL), and waste/oil residues (WTL), have been used for the conversion of carbon-containing sources to liquid fuels [ 3 , 4 ]. Through these technologies, the carbonaceous feedstock, from different sources such as coal, natural gas, or biomass, first transforms into syngas (CO + H 2 ).…”

Section: Introductionmentioning

confidence: 99%

Hydrocracking of Heavy Fischer–Tropsch Wax Distillation Residues and Its Blends with Vacuum Gas Oil Using Phonolite-Based Catalysts

et al. 2021

The Fischer–Tropsch heavy fraction is a potential feedstock for transport-fuels production through co-processing with fossil fuel fraction. However, there is still the need of developing new and green catalytic materials able to process this feedstock into valuable outputs. The present work studies the co-hydrocracking of the Fisher–Tropsch heavy fraction (FT-res.) with vacuum gas oil (VGO) at different ratios (FT-res. 9:1 VGO, FT-res. 7:3 VGO, and FT-res. 5:5 VGO) using phonolite-based catalysts (5Ni10W/Ph, 5Ni10Mo/Ph, and 5Co10Mo/Ph), paying attention to the overall conversion, yield, and selectivity of the products and properties. The co-processing experiments were carried out in an autoclave reactor at 450 °C, under 50 bars for 1 and 2 h. The phonolite-based catalysts were active in the hydrocracking of FT-res.:VGO mixtures, presenting different yields to gasoline, diesel, and jet fuel fractions, depending on the time of reaction and type of catalyst. Our results enable us to define the most suitable metal transition composition for the phonolite-based support as a hydrocracking catalyst.