نتایج جستجو برای: adsorption ch3oh
تعداد نتایج: 55518 فیلتر نتایج به سال:
Herein, a performance analysis of La-doped copper-based catalysts (CuO/ZrO2/La-Al2O3) in methanol steam reforming (MSR) was conducted and compared with commercial low temperature water-gas shift catalyst (HiFUEL W220) to produce H2 CO selectivity. The physicochemical properties as-obtained were characterized by N2 adsorption, XRD, ICP-OES. Effect calcination (750 oC 1000 oC) on the mixed oxide ...
The nature of MoO3 and MoO3/Al2O3 ultrathin films supported on Mo~110! and their interactions with CH3OH have been investigated using surface science techniques. The ultrathin (,50 Å) films were characterized by Auger electron spectroscopy, low energy electron diffraction, and high resolution electron energy loss spectroscopy ~HREELS! of their phonon vibrational modes and electronic transition ...
Maser is an acronym for microwave amplification by stimulated emission of radiation; in astronomy mega-masers are masers in galaxies that are ≥ 10(6) times more luminous than typical galactic maser sources. Observational studies of mega-masers can help us to understand their origins and characteristics. More importantly, mega-masers can be used as diagnostic tracers to probe the physical proper...
Diamond films were successfully synthesized in both parallel-plate radio frequency ~rf: 13.56 MHz! CH4 and CH3OH plasmas with injection of H and OH radicals generated in the remote microwave ~2.45 GHz! H2 /H2O plasma. Effects of H, OH, and CH3 radicals on the diamond film formation in the rf plasma reactor were investigated by the formation of diamond films employing radical injection technique...
Results from groundbased observations and the Infrared Space Observatory (ISO) indicate that CH3OH, NH3 and CH4 are important constituents of interstellar ice mantles. In order to accurately calculate the column densities of these molecules, it is important to have good measurements of their infrared band strength in astrophysical ice analogs. Band strength measurements of CH3OH and CH4 are pre...
Two new Co(II) complexes, [{Co(L)}2{Co(Pic)2(CH3OH)2}] (1) and [{CoL(μ-OAc)}2Co] (2), where H2L = 2,2′-[Ethylenedioxybis(nitrilomethylidyne)]dinaphthol, were designed, synthesized and characterized by elemental analysis, FT-IR spectra, UV-Vis spectra, and X-ray crystallography. Complex 1 consists of two [CoL] and one [Co(Pic)2(CH3OH)2] (Pic = picrate) units and in the [CoL] unit, the Co(II) ato...
Continuing our search for new compounds which function as lattice inclusion hosts, the thia-substituted diquinoline derivatives 5 and 6 have been synthesised and the X-ray structures of (5)6?(CH3OH) and (6)?(benzene) determined. A literature survey on the thioether–1,3-peri aromatic hydrogen interaction reveals that this is reasonably common, but neither crystal structure contains this motif de...
We report Karl G. Jansky Very Large Array (VLA) absorption spectroscopy in four methanol (CH3OH) lines in the z = 0.885 82 gravitational lens towards PKS1830−211. Three of the four lines have very different sensitivity coefficientsKμ to changes in the proton–electron mass ratio μ; a comparison between the line redshifts thus allows us to test for temporal evolution in μ. We obtain a stringent s...
Fragmentation and isomerization of methylamine (CH3NH2(+)), methanol (CH3OH(+)), and methyl fluoride (CH3F(+)) cations by short, intense laser pulses have been studied by ab initio classical trajectory calculations. Born-Oppenheimer molecular dynamics (BOMD) on the ground-state potential energy surface were calculated with the CAM-B3LYP/6-31G(d,p) level of theory for the cations in a four-cycle...
cis-Pinic acid is one of the most important oxidation products of α-pinene--a key monoterpene compound in biogenic emission processes. Molecular level understanding of its interaction with water in cluster formation is an important and necessary prerequisite for ascertaining its role in the aerosol formation processes. In this work, we studied the structures and energetics of the solvated clust...
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