نتایج جستجو برای: adsorption ch3oh
تعداد نتایج: 55518 فیلتر نتایج به سال:
RuO2 domains supported on SnO2, ZrO2, TiO2, Al2O3, and SiO2 catalyze the oxidative conversion of methanol to formaldehyde, methylformate, and dimethoxymethane with unprecedented rates and high combined selectivity (>99%) and yield at low temperatures (300-400 K). Supports influence turnover rates and the ability of RuO2 domains to undergo redox cycles required for oxidation turnovers. Oxidative...
H5PV2Mo10O40 polyoxometallate Keggin clusters supported on ZrO2, TiO2, SiO2, and Al2O3 are effective catalysts for CH3OH oxidation reactions to form HCHO, methyl formate (MF), and dimethoxymethane (DMM). Rates and selectivities and the structure of supported clusters depend on the surface properties of the oxide supports. Raman spectroscopy showed that Keggin structures remained essentially int...
Crystals of the title compound, [Li{OOP(O-2,6-(i)Pr2C6H3)2}(CH3OH)3]·CH3OH or [Li(C24H34O4P)(CH3OH)3]·CH3OH, have been formed in the reaction between HOOP(O-2,6-(i)Pr2C6H3)2 and LiOH in methanol. The title compound is of inter-est as it represents the first reported crystal structure of the family of lithium phosphate diesters. The {Li(CH3OH)3[O2P(O-(i)Pr2C6H3)2]} unit displays the Li atom in a...
Dimethyl carbonate (DMC) and dimethoxy methane (DMM) are of commercial interest because they are good fuel additives and building blocks for organic synthesis. Both products can be produced using Cu-exchanged ZSM-5 and Y from a mixture containing O2, CO, and CH3OH. Experimental studies done in our research group [1,2] have shown that at identical reaction conditions, very different product sele...
The results of the first complete survey for 6668-MHz CH3OH and 6035-MHz excitedstate OH masers in the Small and Large Magellanic Clouds are presented. A new 6668-MHz CH3OH maser in the Large Magellanic Cloud has been detected towards the star-forming region N 160a, together with a new 6035-MHz excited-state OH maser detected towards N 157a. We also re-observed the previously known 6668-MHz CH3...
Methanol synthesis from catalytic recycling of CO2 is one viable route to produce fuel and a stock chemical greenhouse gas. Herein, hydrogenation CH3OH investigated with density functional theory calculations combined mean-field microkinetic modeling. The model explores the direct for (HCOOH route) competing reverse water-gas shift (RWGS) reaction. predicted temperature dependence turnover freq...
We report observations of gaseous methanol in an edge-on torus surrounding the young stellar object L1551 IRS5. The peaks in the torus are separated by ∼ 10,000 AU from L1551 IRS5, and contain ∼ 0.03 M⊕ of cold CH3OH. We infer that the CH3OH abundance increases in the outer part of the torus, probably as a result of methanol evaporation from dust grain surfaces heated by the shock luminosity as...
Aim to greatly enhance the magnetic performance, room temperature nitriding experiments were implemented on existing linear Fe clusters. Firstly, dissociation of CH3OH adsorption process was deducted in detail, which laid a good foundation for better use surface quasi-potential. Further solve coming problems like weak linearity and low effect, atomic layers deposition are confirmed as key NH3 (...
Numerical investigation on photocatalytic CO2 reduction by solar energy in double-skin sheet reactor
Double-skin sheet reactor (DSSR) attracts attention in recent years due to the simple design and high mass transfer, but its application to photocatalytic CO2 reduction with immobilized catalyst is still a new trial. In this paper, the three-dimensional models describing the photocatalytic CO2 reduction in DSSR by means of solar energy were developed and numerically simulated, on the basis of t...
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