Migration of nickel and titanium oxide species as studied by in situ scanning transmission electron microscopy
References (47)
- et al.
J. Catal.
(1978) - et al.
J. Catal.
(1979) - et al.
J. Catal.
(1981) - et al.
J. Catal.
(1979) - et al.
J. Catal.
(1979) - et al.
Appl. Catal.
(1983) - et al.
J. Catal.
(1983) - et al.
J. Catal.
(1983) - et al.
J. Catal.
(1982) - et al.
J. Catal.
(1985)
J. Catal.
Stud. Surf. Sci. Catal.
J. Catal.
J. Catal.
J. Catal.
J. Catal.
J. Catal.
J. Catal.
J. Catal.
Stud. Surf. Sci. Catal.
Appl. Catal.
J. Catal.
J. Catal.
Cited by (53)
Enhanced dielectric properties of Ag-doped CCTO ceramics for energy storage devices
2017, Ceramics InternationalCitation Excerpt :Also, there are various ways to reduce the sintering temperature in order to lower the fabrication costs and improve the density of the ceramic material, such as to incorporate glass fritz, incorporate a metallic material, and employ nano-sized powders. In the case of incorporating the metallic material, silver, manganese and nickel are generally used as sintering aid materials [5–7]. The incorporation of a metallic material is suggested to depress the oxygen vacancy and relieve the internal stresses to result in an excellent enhancement of the relative dielectric permittivity [8–10].
Stabilizing cobalt catalysts for aqueous-phase reactions by strong metal-support interaction
2015, Journal of CatalysisCitation Excerpt :The so-called strong metal-support interaction (SMSI) effect has been reported to be due to migration of partially reduced metal oxide species onto the surface of metal particles [33–37]. Dumesic et al. monitored the changes in physical and chemical properties of a NiTiO2 system during reaction in hydrogen using transmission electron microscopy (TEM) [38]. Zander et al. have recently observed the formation of a ZnO layer covering copper particles upon reduction by means of a depth-sensitive synchrotron X-ray photoelectron spectroscopy (XPS) [39].
Deactivation of supported nickel catalysts during CO methanation
2014, Applied Catalysis A: GeneralCitation Excerpt :Partial reduction of the TiO2 support could also have a contribution, in a minor extent, to the TPR profiles. These two phenomena have also been observed in several literature studies [27,39–48]. The average Ni particle diameter was estimated both from hydrogen static chemisorption and X-ray diffraction measurements.
Growth of carbon nanotube forests between a bi-metallic catalyst layer and a SiO<inf>2</inf> substrate to form a self-assembled carbon-metal heterostructure
2012, CarbonCitation Excerpt :When the sample is exposed to the N2/H2 atmosphere at a temperature of around 600 °C, native Ni oxide, which was formed due to exposure to ambient prior to process, becomes reduced (supporting information D – reactions VI–VIII). The availability of atomic hydrogen was included in considerations since Ni is known to unfold strong catalytic effects leading to dissociation of H2 on its surface [28]. Experimentally, the reduction of oxidized Ni was confirmed to take place already at rather low temperatures (e.g., from ∼200 °C for powder sample in H2 atmosphere [29]).
Methanethiol chemistry on TiO<inf>2</inf>-supported Ni clusters
2008, Surface Science