Mesoporous Zeolite‐Supported Ruthenium Nanoparticles as Highly Selective Fischer–Tropsch Catalysts for the Production of C₅–C₁₁ Isoparaffins

Abstract

A highly selective catalyst based on mesoporous zeolites for the production of C5–C11 isoparaffins from syngas has been developed. The selectivity to C5–C11 hydrocarbons over Ru/meso‐ZSM‐5 reaches about 80 % with a ratio of isoparaffins to n‐paraffins of 2.7:1. The mesoporous structure and the unique acidity of meso‐ZSM‐5 play key roles in tuning the product selectivity by controlling the secondary hydrocracking reactions.

Hierarchically Nanoporous Zeolites and Their Heterogeneous Catalysis: Current Status and Future Perspectives

“…H 2 ) to hydrocarbon is at the center of the gas-to-liquid (GTL) processes, which is very powerful catalytic process for production of liquid fuel sources such as gasoline and diesel from syngas [139][140][141]. Various hierarchical zeolites supporting various metal nanoparticles such as Co, Ru and Fe have been recently investigated for FT conversion [142][143][144]. Co metal nanoparticles were supported on pure-silica delaminated ITQ-2 and ITQ-6 zeolites, among which the Co/ITQ-6 showed the highest activity about 1.5 and 1.8 times higher than that of Co/MCM-41 and Co/SiO2, respectively (Table 3) [142].…”

“…It was proved that the high activity of Co/ITQ-6 is ascribed both to a relatively good dispersion and a high reducibility of Co nanoparticles. In more recent years, hierarchical MFI zeolite was used for supporting Ru metal nanoparticles [143]. This catalyst exhibited very high selectivity (80 %) to hydrocarbons in the range of gasoline (C 5 -C 11 ) with a ratio of isoparaffins to n-paraffins of 2.7:1.…”

Preparation of Nanoporous Ruthenium Catalyst and Its CO Oxidation Characteristics

“…Surface features of the nanoporous metal such as surface strain and segregation of residual elements (Mn in this case) may promote catalytic performance, for example, in Fischer-Tropsch synthesis. 48) …”

Sputtered nano-cobalt on H-USY zeolite for selectively converting syngas to gasoline

“…Although it is difficult to disobey the ASF law, quantitative works have been performed in order to obtain more selective products expected, especially gasoline-ranged middle isoparaffins from FTS [3]. Owing to its well catalysis of hydrocracking and isomerization of heavy hydrocarbons, acid zeolite is regarded as an excellent support candidate for selectively producing branched paraffins [4,5].…”

“…Some attempts have been performed to directly derive isoparaffins from syngas by one step on a bifunctional catalyst [4,6,7]. For instance, isoparaffins can be produced by physical mixed catalysts, composed of FTS metal and acid zeolite [8].…”