Formation of better catalytically active titanium species in Ti-MCM-41 by vapor-phase silylation

Lin, Kaifeng; Wang, Qianqian; Meng, F.L.; Sun, Zhenhua; Yang, Qing; Cui, Yuming; Jiang, Dazhen; Xiao, Feng‐Shou

doi:10.1016/j.jcat.2005.08.003

Cited by 47 publications

(32 citation statements)

References 20 publications

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“…The OH substitution from silanol groups by trimethylsilyl groups can be monitored by FT-IR [7,10]. To this end IR spectra of both precursors were obtained (Fig.…”

Section: Resultsmentioning

confidence: 99%

Fe/MCM-41 sylilated catalyst: structural changes determination during the Fischer–Tropsch reaction

et al. 2009

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Two Fe/MCM-41 systems, one of them sylilated, were obtained to be used as catalysts in Fischer-Tropsch reaction. They have more than 90% of the iron species located inside the support channels, leading to a narrow crystal size distribution accessible to reactive gases. The samples were characterized by X-ray diffraction, atomic absorption spectroscopy, N 2 adsorption, Mössbauer spectroscopy and Fourier transformer infrared spectroscopy. Mössbauer spectroscopy allowed us to demonstrate that the catalytic active species were the same in both catalysts. The only difference between them was the surface hydrophobicity, which decreases the "water gas shift reaction" in the sylilated catalyst. Besides, this solid is more active for hydrocarbon production, with a lower methane yield.

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“…The OH substitution from silanol groups by trimethylsilyl groups can be monitored by FT-IR [7,10]. To this end IR spectra of both precursors were obtained (Fig.…”

Section: Resultsmentioning

confidence: 99%

Fe/MCM-41 sylilated catalyst: structural changes determination during the Fischer–Tropsch reaction

et al. 2009

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show abstract

“…This may not be a problem for most slices as the slices can be analyzed separately and can be scaled to have similar intensity ranges. Feasibility of this type of acquisition has been reported using an R = 2 SENSE reconstruction with a saturation pulse every four slices [3]. However, the first slice acquired after each saturation pulse has relatively poor SNR.…”

Section: Discussionmentioning

confidence: 99%

“…However, the first slice acquired after each saturation pulse has relatively poor SNR. This slice might be used to obtain a quantitative input function [3].…”

Section: Discussionmentioning

confidence: 99%

1102 Data acquisition and reconstruction of undersampled radial MR myocardial perfusion

Adluru

DiBella

McGann

2008

Journal of Cardiovascular Magnetic Resonance

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“…12. The band at 1469 cm -1 has been assigned to the asymmetric -CH3 deformation of -Si-CH3 [42,43], while the 2852, 2922 and 2960 cm -1 bands corresponded to -CH2CH3. The -OH stretching band is seen at 3208 cm -1 in -OH form and the H2O bending vibration is seen at 1619 and 1645 cm cm -1 .…”

Section: Silica-pillaringmentioning

confidence: 99%

Ion Exchange and Application of Layered Silicate

Park¹

2012

Ion Exchange Technologies

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Formation of better catalytically active titanium species in Ti-MCM-41 by vapor-phase silylation

Cited by 47 publications

References 20 publications

Fe/MCM-41 sylilated catalyst: structural changes determination during the Fischer–Tropsch reaction

Fe/MCM-41 sylilated catalyst: structural changes determination during the Fischer–Tropsch reaction

1102 Data acquisition and reconstruction of undersampled radial MR myocardial perfusion

Ion Exchange and Application of Layered Silicate

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