نتایج جستجو برای: adsorption ch3oh
تعداد نتایج: 55518 فیلتر نتایج به سال:
We present an interferometric and single-dish study of small organic species towardComets C/1995O1 (Hale-Bopp) and C/2002 T7 (LINEAR) using the BIMA interferometer at 3 mm and the ARO 12m telescope at 2 mm. For Comet Hale-Bopp, both the single-dish and interferometer observations of CH3OH indicate an excitation temperature of 105 5 K and an average production rate ratio Q(CH3OH)/Q(H2O) 1:3% at ...
BACKGROUND Methanol (CH3OH) is believed to be teratogenic based on rodent studies. The mouse is more sensitive than the rat, but mechanisms of toxicity and identification of teratogenic metabolites are uncertain. METHODS Rat and mouse whole embryo cultures are used to distinguish toxicity of CH3OH and its metabolites, formaldehyde (HCHO) and formate (HCOONa), which are produced following tran...
Transmission infrared spectroscopy has been used in a systematic laboratory study to investigate hydrogen bonding in binary mixtures of CH3OH and H2O, vapour deposited at 30 K, as a function of CH3OH/H2O mixing ratio, R. Strong intermolecular interactions are evident between CH3OH and H2O with infrared band profiles of the binary ices differing from that of the pure components and changing sign...
We report on the analysis of the performance of each electrode of an air-breathing passive micro-direct methanol fuel cell (µDMFC) during polarization, stabilization and discharge, with CH3OH (2-20 M). A reference electrode with a microcapillary was used for separately measuring the anode the cathode potential. Information about the open circuit potential (OCP), the voltage and the mass transpo...
Solvated cluster ions Co(CH3OH)n (n 1⁄4 4–7) have been produced by electrospray and studied using photofragment spectroscopy. There are notable differences between the photodissociation spectra of these complexes and the analogous water complexes. Co(CH3OH)6 absorbs significantly more strongly than Co(H2O)6. The photodissociation spectra of Co (CH3OH)n (n 1⁄4 4, 5 and 6) are very similar, which...
Rotation-tunneling a-type spectra of CH3OH•••H2O and CH3OD•••D2O were recorded between 18 and 60 GHz using direct absorption microwave spectroscopy, and for CH3OH•••H2O, CH3OH•••H2O, CH3OH•••DOH, CD3OH•••H2O, and CH3OD•••D2O between 7 and 24 GHz using a Fourier-transform microwave spectrometer. Because CH3OH and H2O are capable of both accepting and donating hydrogen bonds, there exists some qu...
The electrochemical reduction of CO2 is an efficient method to convert waste into hydrocarbon fuels, among which methanol the direct liquid fuel in cells (DMFC). Copper most widely used catalyst for reaction (CO2RR); affected by surface morphology copper. Here, effect and mechanism CO2RR on three typical low-index Cu (100), (110) (111) surfaces are studied. According our results, provides optim...
Herein, we report the synthesis of two novel coordination polymers using a combination imidazole-containing ligands, namely 1,3,5-tris((1H-imidazol-1-yl)methyl)benzene (L1) and 3,3?,5,5?-tetra(1H-imidazol-1-yl)-1,1?-biphenyl (L2) carboxylate ligand derived from 4,4?-biphenyldicarboxylic acid (H2BPDC). The structures [Ni(L1)(BPDC)]·2H2O (1·2H2O), which exhibits 2-fold interpenetrated 3D ? archit...
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