2001
DOI: 10.1016/s0926-860x(00)00860-7
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Studies on cobalt-based Fischer–Tropsch catalyst and characterization using SEM and XPS techniques

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Cited by 15 publications
(3 citation statements)
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“…Such situation may arise in the formation of non-stoichiometric lithium silicate and becomes very reactive. In a separate study on silica supported cobalt catalyst, Sharma et al (2001) observed higher reactivity in FT reactions due to formation of non-stoichiometry in SiO 2 to SiO x and formation of cobalt silicate. Further rise in temperature ( 630 • C) brings weakening of Li 2 O and SiO x bond with the increase in temperature and may be the reason for decrease in sorption capacity.…”
Section: Resultsmentioning
confidence: 92%
“…Such situation may arise in the formation of non-stoichiometric lithium silicate and becomes very reactive. In a separate study on silica supported cobalt catalyst, Sharma et al (2001) observed higher reactivity in FT reactions due to formation of non-stoichiometry in SiO 2 to SiO x and formation of cobalt silicate. Further rise in temperature ( 630 • C) brings weakening of Li 2 O and SiO x bond with the increase in temperature and may be the reason for decrease in sorption capacity.…”
Section: Resultsmentioning
confidence: 92%
“…In general, a large sorption capacity, adequate kinetics, cyclability, stability, and a wide thermal operation range could define the ideal perfect capture material . Thus, it different kinds of materials as potential CO 2 captors had been proposed, such as membranes, zeolites, activated carbons, hydrotalcites, metal–organic frameworks (MOFs), amine‐based adsorbents, alkaline oxides and earth alkaline oxides, among others. However, CO 2 capture capacity in these materials is not good enough, and several of these materials cannot be regenerated.…”
Section: Introductionmentioning
confidence: 99%
“…3D data can be obtained using electron tomography, but the need to collect multiple images over a range of tilts conflicts with achieving the temporal resolution needed to capture catalyst dynamics. Scanning electron microscopy (SEM) imaging resolves the support topography and the positions and sizes of surface catalyst particles. Such information is directly relevant to the catalyst performance and is obtained without the time required for a full 3D reconstruction, but at the cost of a resolution that is typically lower than that achieved by tomography. However, in recent years it has become possible to acquire a secondary electron image simultaneously while collecting a STEM image, and with improved resolution. This combined imaging is achieved in a scanning transmission electron microscope by using separate detectors to collect the distinct signals generated when the STEM beam scans across the sample.…”
mentioning
confidence: 99%