In this paper we demonstrate the application of high magnetic fields to study the magnetic properties of low dimensional spin systems. We present a case study on the series of 2-leg spin-ladder compounds Na 2 T 2 (C 2 O 4 ) 3 (H 2 O) 2 ... C Mennerich,HH Klauss,AUB Wolter,....
XPS spectra of Re 4f for the catalyst after reaction imply that the surface species are composed of Re ions in different valence states - more reduced when pretreated with propene, less reduced when pretreated with helium. Unfortunately it is still not possible to confirm what species are respons...
Roadmap for catalysis science in the 21st century: a personal view of building the future on past and present accomplishments. Appl. Catal. A Gen. 222, 3–18 (2001). CAS Google Scholar Langmuir, I. The mechanism of the catalytic action of platinum in the reactions 2CO + O2 = 2CO2 ...
hydroxyl groups and adsorbed water is achieved. 3-coordinated oxygen sites are preferentially formed on the (sub-)surface of γ-Al2O3. Our17O NMR experimental results demonstrate a non-random distribution of oxygen species and a non-spinel structure in γ-Al2O3. The detailed insights...
At present, nanodevice materials are mainly comprised of biocompatible conductive or semiconductive materials. Conductive materials (e.g. Au and Pt) are commonly used to fabricate the passive metallic electrode, which record the interfacial electric current induced by action potential and electrochemical ...
The effect of temperature and pH on the zeta potential of α-Al2O3 and adsorption of fluoride ions at the α-Al2O3/aqueous solution interface has been inve... A.,López,Valdivieso,... - 《Journal of Colloid & Interface Science》 被引量: 155发表: 2006年 Influence of temperature on ad...
In general, phenolic compounds may be present in plants as free forms, but more often, they are found in conjugated forms with one or more sugar residues linked by β-glycosidic bonds to a hydroxyl group (O-glycosides) or a carbon atom of the aromatic ring (C-glycosides). The associated...
Regolith is present in each of the Venera panoramas surrounding rocks that have varying degrees of layering, fracturing, rounding, pits, and rock burial (Fig.5), all consistent with physical degradation of the surface rocks (Florensky et al.1977a,b,1983b; Garvin et al.1984; Basilevsky et ...
The weight ratio between the weight of Y 2 O 3 and the total weight of SiO 2 , Al 2 O 3 and Y 2 O 3 is at least 0.2, preferably at least 0.4 or more. The rare earth ions can preferably be incorporated in crystal phases which are precipitated out of glass with a high yttrium ...
are shown in Fig.2a, b, respectively. The 1% Ag/nano-Al2O3presented much higher activity than 1% Ag/micro-Al2O3for both C3H6-H2-SCR and ethanol-SCR, demonstrating that the atomically dispersed Ag species on Ag/nano-Al2O3are markedly superior to the Ag nanoparticles on Ag/micro-Al2O...