Effect of sodium incorporation into Fe-Zn catalyst for Fischer- Tropsch synthesis to light olefins

Applied research on methane steam reforming properties of porous structural catalyst fabricated by selective laser melting technology

“…Steam Reforming of Methane (SRM) is the most widely used hydrogen production technology in industry, which has the characteristics of a simple process with low cost, clean and high efficiency. Its large hydrogen production can meet the needs of industrialization [1][2][3][4][5][6][7]. SRM is greatly affected by the catalyst, and the characteristics of the catalyst directly determine the effect of methane steam reforming.…”

Reversing the Selectivity of Alkanes and Alkenes in Iron-Based Fischer–Tropsch Synthesis: The Precise Control and Fundamental Role of Sodium Promotor

“…Moreover, alkali metals are frequently employed as promoters with a strategic inclusion of minute quantities for iron-based catalysts in FTS processes, − while they exert a significant improvement on the performances of FTS by leading to a boosted yield of olefins. − Among the various alkali metals, soduim (Na) was most widely used due to its remarkable effects on the reactivity of iron-based catalysts toward FTS, and two possible mechanisms are suggested in terms of the structure–reactivity relationship between Fe-based catalysts and FTS. For one thing, the presence of Na was considered to improve the generation of the active phase of iron carbide which serves as the active site for olefin production in FTS according to the linear relationship between the amount of iron carbide and olefin yield. − For the other, the Na dopant is also regarded as an electronic promoter, which could modulate the catalytic behavior of Fe active sites. , In this case, the electron transfer from Na to Fe-based active sites is considered, which thus leads to a preferred reaction route toward olefin desorption from catalyst surfaces.…”

Promoting jet fuel production by utilizing a Ru-doped Co-based catalyst of Ru-Co@C(Z-d)@Void@CeO2 in Fischer Tropsch synthesis

“…Despite iron being denoted as the most applicable FTS-based catalyst, it presents some drawbacks like low catalytic activity in FTS, contrary to its high catalytic activity in the water gas shi reaction (WGSR) and it presents low selectivity toward heavier hydrocarbons and high CO 2 selectivity. 5,6 In contrast, cobalt enhances FTS catalytic activity to an appropriate level and it also shows a low tendency toward the WGSR and high selectivity toward hydrocarbons with more than 5 carbons (S C 5+ ). 7 Although cobalt improves the FTS to achieve suitable targets, there have been numerous studies geared toward maximum achievement by utilizing the appropriate promoter alongside effective catalyst support.…”