Sa1044 Telaprevir: A Real World Experience

Khalid, Hamza; Khalid, Omer; Hilton, Robert; Bhatia, Ruchi; Bhatti, Faiza; Bacon, Bruce R.

doi:10.1016/s0016-5085(13)63642-2

Cited by 2 publications

(1 citation statement)

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“…Mn compound reference spectra were taken from NSLS's X18-X19 database. 31 In Figure 4, the absorption edge structures of the spectra taken at energies near the Mn K-edge, as a function of the carburization temperature, are presented.…”

Section: Resultsmentioning

confidence: 99%

Fischer−Tropsch Synthesis: Influence of Mn on the Carburization Rates and Activities of Fe-Based Catalysts by TPR-EXAFS/XANES and Catalyst Testing

et al. 2011

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Fe-based catalysts containing different amounts of Mn were tested for Fischer−Tropsch synthesis using a stirred tank reactor at 270 °C, 1.21 MPa, and H2:CO = 0.7. Catalyst activation by carburization with 10% CO/He was followed by Temperature Programmed Reduction/X-ray Absorption Spectroscopy (TPR-EXAFS/XANES) from room temperature to 300 °C. γ-Fe2O3 was converted into iron carbides, whereas MnO x was reduced to oxygen deficient MnO. Mn hindered Fe carburization, such that the carburized catalyst displayed higher Fe3O4 content than the catalyst without Mn. EXAFS fitting indicates that the carburized catalyst contained a mixture of Hägg carbide, Fe3O4, and Mn oxides. Increasing Mn content led to higher CH4 and light product selectivities, and lower light olefin selectivities. Higher and stable conversions were obtained with a catalyst containing an almost equimolar Fe/Mn ratio relative to the catalyst without Mn. Selectivity trends are attributed to the higher WGS rates observed on the FeMn catalysts, consistent with the structural differences observed.

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Section: Resultsmentioning

confidence: 99%