Chemistry of organochromium complexes on inorganic oxide supports. 1. Characterization of chromocene on silica catalysts

Langmuir ◽  
1990 ◽  
Vol 6 (12) ◽  
pp. 1774-1783 ◽  
Author(s):  
Shi Liang Fu ◽  
Jack H. Lunsford
Keyword(s):  
Oxide Supports ◽  
Inorganic Oxide

scholarly journals Determining the Location of Co2+ in Zeolites by UV-Vis Diffuse Reflection Spectroscopy: A Critical View

Catalysts ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 123 ◽  
Author(s):  
Andrea Bellmann ◽  
Christine Rautenberg ◽  
Ursula Bentrup ◽  
Angelika Brückner
Keyword(s):  
Diffuse Reflection ◽  
Co Adsorption ◽  
In Situ Ftir ◽  
Diffuse Reflection Spectroscopy ◽  
Reflection Spectroscopy ◽  
Oxide Supports ◽  
In Situ Ftir Spectroscopy ◽  
Vis Spectroscopy

UV–Vis spectroscopy as well as in situ FTIR spectroscopy of pyridine and CO adsorption were applied to determine the nature of Co species in microporous, mesoporous, and mixed oxide materials like Co–ZSM-5, Co/Na–ZSM-5, Co/Al–SBA-15, and Co/Al2O3–SiO2. Because all sample types show comparable UV–Vis spectra with a characteristic band triplet, the former described UV–Vis band deconvolution method for determination and quantification of individual cationic sites in the zeolite appears doubtful. This is also confirmed by results of pyridine and CO adsorption revealing that all Co–zeolite samples contain two types of Co2+ species located at exchange positions as well as in oxide-like clusters independent of the Co content, while in Co/Al–SBA-15 and Co/Al2O3–SiO2 only Co2+ species in oxide-like clusters occur. Consequently, the measured UV–Vis spectra represent not exclusively isolated Co2+ species, and the characteristic triplet band is not only related to γ-, β-, and α-type Co2+ sites in the zeolite but also to those dispersed on the surface of different oxide supports. The study demonstrates that for proper characterization of the formed Co species, the use of complementary methods is required.

Hydrolysis of rapeseed oil by lipase immobilized on inorganic oxide supports

1994 ◽  
Vol 8 (8) ◽  
pp. 535-540 ◽  
Author(s):  
G. Kuncov� ◽  
Y. Mal�terov� ◽  
P. Loveck�
Keyword(s):  
Rapeseed Oil ◽  
Oxide Supports ◽  
Inorganic Oxide ◽  
Hydrolysis Of

Solid-state silver-109 NMR characterization of silver dispersed on oxide supports

1992 ◽  
Vol 96 (9) ◽  
pp. 3799-3806 ◽  
Author(s):  
J. K. Plischke ◽  
A. J. Benesi ◽  
M. A. Vannice
Keyword(s):  
Solid State ◽  
Oxide Supports ◽  
Nmr Characterization

Characterization of alumina–titania mixed oxide supports

1998 ◽  
Vol 23 (5-6) ◽  
pp. 265-275 ◽  
Author(s):  
A Gutiérrez-Alejandre ◽  
M González-Cruz ◽  
M Trombetta ◽  
G Busca ◽  
J Ramı́rez
Keyword(s):  
Mixed Oxide ◽  
Oxide Supports ◽  
Mixed Oxide Supports

Note on the silylation of inorganic oxide supports

1990 ◽  
Vol 134 (2) ◽  
pp. 576-579 ◽  
Author(s):  
Mark Chaimberg ◽  
Yoram Cohen
Keyword(s):  
Oxide Supports ◽  
Inorganic Oxide

scholarly journals The Role of Inorganic Oxide Supports in Synthesis of Cyclic Carbonates from Carbon Dioxide and Epoxides

2012 ◽  
Vol 33 (2-3) ◽  
pp. 416-424 ◽  
Author(s):  
Ting CAO ◽  
Liting SUN ◽  
Yu SHI ◽  
Li HUA ◽  
Ran ZHANG ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Cyclic Carbonates ◽  
Oxide Supports ◽  
Inorganic Oxide
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