Infrared studies of reactions on oxide surfaces. 6. Active sites on dehydroxylated silica for the chemisorption of ammonia and water

Morrow, B. A.; Cody, I. A.

doi:10.1021/j100559a010

Cited by 182 publications

(160 citation statements)

References 5 publications

Supporting

Mentioning

145

Contrasting

Order By: Relevance

“…As already reported in Section 2, 3.1.4 and 3.1.7, the S2R concentration is rather small (in the initial works 137,535,536 it was reported to be around 0.1 S2R/nm 2 , although more recent data after severe activation steps suggests that it can reach up to 0.5 S2R/nm 2 ). Interestingly, the formation of S2R surface defects is quite general as they have also been identified by their IR fingerprint in crystalline all-silica silicalite.…”

Section: The S2r Surface Defectsupporting

confidence: 62%

Silica Surface Features and Their Role in the Adsorption of Biomolecules: Computational Modeling and Experiments

et al. 2013

View full text Add to dashboard Cite

show abstract

Section: The S2r Surface Defectsupporting

confidence: 62%

Silica Surface Features and Their Role in the Adsorption of Biomolecules: Computational Modeling and Experiments

et al. 2013

View full text Add to dashboard Cite

show abstract

“…A spin-dependent transport has been studied in the context of the Aharonov-Casher phase [5][6][7][8] and spin Berry phase. [9][10][11][12] Various types of interesting phenomena have been found in spin transport systems. Examples include the spin transistor effect, 13 spin precession in two-dimensional systems, [14][15][16][17] spin conductance, [18][19][20] spin polarization, 21,22 spin current in mesoscopic rings with spin-orbit ͑SO͒ interactions, 23 entanglement, 24,25 spin separation in a twodimensional hole gas, 26 and spin Hall effect.…”

Section: Introductionmentioning

confidence: 99%

Spin nutation and polarization in ballistic semiconductor nanostructures

Cho

2008

Phys. Rev. B

View full text Add to dashboard Cite

The definitions of spin orientation and polarization vectors are introduced within the particle density matrix of scattering states in leads. It is shown that spin-density vector can be defined by the product of the spin orientation vector, being a unit direction vector, and the charge density, corresponding to the amplitude of the spin-density vector, experimentally observable by a spatial charge modulation measurement. When an electron transports through a ballistic semiconductor nanostructure, due to quantum interference of two spin eigenmodes, the electron spin generally undergoes nutation on its precession around the effective magnetic field resulting from spin-orbit interactions. The nutation of electron spin is found to be crucial for spin polarization in the quantum transport. When one of two spin-dependent channels in leads is evanescent, electron spin is shown to be fully polarized for distance from the interface larger than the spin precession length.

show abstract

“…Strained Si-O-Si bridges, reactive toward ammonia, are known to be formed also on bare silica, but after outgassing treatment at significantly higher temperatures [37][38][39]. The formation of such particular structure is then apparently promoted by the involvement of the silica support in the fixation of chromium species.…”

Section: Page 10 Of 21mentioning

confidence: 99%

CrO /SiO2 catalysts prepared by metal vapour synthesis: Physical–chemical characterisation and functional testing in oxidative dehydrogenation of propane

Botavina¹,

Evangelisti²,

Agafonov³

et al. 2011

Chemical Engineering Journal

View full text Add to dashboard Cite

In the present work catalysts prepared by a new perspective method of metal vapour synthesis were studied in the reaction of propane oxidative dehydrogenation in the presence of CO 2 as a mild oxidant. This method let to obtain on the catalyst surface a high dispersed chromium species even at high chromium loadings. On the surface of the catalysts with the chromium loading up to 6.0 wt % only chromate species were found, the further increase of the chromium loading results in the appearance of the -Cr 2 O 3 . The catalyst with 6.0 wt % demonstrated also the highest catalytic activity with the yield in propene 69%.

show abstract

Infrared studies of reactions on oxide surfaces. 6. Active sites on dehydroxylated silica for the chemisorption of ammonia and water

Cited by 182 publications

References 5 publications

Silica Surface Features and Their Role in the Adsorption of Biomolecules: Computational Modeling and Experiments

Silica Surface Features and Their Role in the Adsorption of Biomolecules: Computational Modeling and Experiments

Spin nutation and polarization in ballistic semiconductor nanostructures

CrO /SiO2 catalysts prepared by metal vapour synthesis: Physical–chemical characterisation and functional testing in oxidative dehydrogenation of propane

Contact Info

Product

Resources

About