A highly selective Raney Fe@HZSM-5 Fischer–Tropsch synthesis catalyst for gasoline production: one-pot synthesis and unexpected effect of zeolites

Breaking the Fischer–Tropsch synthesis selectivity: direct conversion of syngas to gasoline over hierarchical Co/H-ZSM-5 catalysts

“…Researchers predominantly ascribed this phenomenon to the (hydro)cracking activity of the acid function. 8,12,17,18 In contrast to the hydrocracking of petroleum-derived feeds, where the aromatic content of the feed determines the processing conditions, hydrocracking of low-temperature FT (LTFT) waxes (often referred to as 'mild hydrocracking') is less demanding. The optimal process temperature of mild hydrocrackers is ca.…”

Analysis of dual fluidized bed gasification integrated system with liquid fuel and electricity products

“…The rate of CO conversion and the selectivity to C5þ hydrocarbons are the main concerns of most studies [35], but the maximum selectivity for gasoline production is about 45% according to the ASF distribution [36]. In this work, F-T synthesis model deviating from ASF law is built up based on the experiment data from Sun [24]. The catalyst chosen from the experiment shows 93%…”

“…155 C steam (0.67 MW) is used to heat reboiler in carbon capture unit. F-T synthesis is an exothermic reaction, circulating water is used to take away the reaction heat (0.83 MW) to keep the reaction temperature at 270 C [24], finally 2.37 MW heat (24.0% of the input biomass) is stored in liquid product. The F-T fuel gas is divided into two parts, one part (0.53 MW) is sent back to CR of DFB reactor as fuel to supply the heat demand, and another part (3.88 MW) is mixed with preheat air (0.14 MW) from HRSG unit to drive the gas turbine and produce electricity.…”

Tunable isoparaffin and olefin yields in Fischer–Tropsch synthesis achieved by a novel iron-based micro-capsule catalyst

“…Cobalt-based capsule catalysts have been studied extensively for direct isoparaffin synthesis [19,20]. Fe-based catalysts have much lower cost and lower methane selectivity than Co-based catalysts, which are proper candidates for capsule catalysts [21,22]. Recently, our group reported a fused iron-based capsule catalyst for isoparaffin synthesis, which was synthesized without organic template, giving a remarkable increase in isoparaffin/normal paraffin ratio compared to the core catalyst (fused iron) [23].…”

“…Zeolite with highly thermal stability, ordered structure, high acidity and shape selectivity has been applied widely as heterogeneous catalysts in the traditional petroleum-related processes and fine chemical industries [31][32][33]. So far, the zeolite membranecoated core catalysts are usually prepared by the hydrothermal synthesis method [22,34,35] or physically adhesive method [16,36]. However, the hydrothermal synthesis method produces generally a lot of waste water.…”