20). The peaks for P=O and P–O–P bonds were also observed when Au1/BP nanosheets were purged by O2 under light irradiation (1.2 W) at 90 °C (Fig. 3b). To simulate the reaction condition in the presence of water, N2 was allowed to bubble in deionized water, followed by ...
Coking reaction (via both temperature-programmed surface reaction of CH4 (CH4-TPSR) and pulse decomposition of CH4) disclosed that La2O3 reduced the dehydrogenation ability of Ni. CO2-TPO, O2-TPO (followed after CH4-TPSR) confirmed that only part amount of carbon species derived from methane ...
(ER) was less than 1,CH4 was not completely oxidized and a lot of gas H2 and CO were then produced,which lowered the combustion heat release.If ER equaled 1,CH4 was completely oxidized to gas CO2 and water vapor,and the reaction released the maximum combustion heat.Meanwhile,heat loss ...
The CO2 present will compete with O2 for atomic hydrogen and lead to formation of CO through the reaction CO2 + H CO + OH. Reactions of CO2 with hydrocarbon radicals may also contribute to CO formation. The most important steps are those of singlet and triplet CH2 with CO2, while other...
Study on Auto-Ignition Characteristics of Diesel Fuel in an O2/CO2 Mixture To study diesel fuel auto-ignition in an O 2 -CO 2 mixture, a TZ (temperature zone) model is proposed. The effect of O 2 and CO 2 on reaction rate is consi... Y Liu,T Zhao,Z Li,... - 《Transactions...
The partial oxidation of methane to methanol with O2 is an attractive catalytic reaction,but the catalysts still face great challenges in terms of activity... X Zhang,Y Wang,K Chang - 《Applied Catalysis B Environmental An International Journal Devoted to Catalytic Science & Its Applications》 被...
Methane has also been washed with conc H2SO4, then solid NaOH and then 30% NaOH solution. It is dried with CaCl2, then P2O5, and condensed in a trap at liquid air temperature, then transferred to another trap cooled in liquid nitrogen. CO2, O2, N2 and higher hydrocarbons can be ...
By using air as the oxidant instead of O2 could give much higher CH4 conversion and product selectivity. When using O2 as the oxidant, addition of H2O in the feed could not only invoke the water-gas shift reaction, but also reduce carbon deposits on the catalyst. CH4 conversion of >90%,...
Amorphous Ni 3(SbTe 3) 2 was prepared from a metathesis between K 3SbTe 3 and NiBr 2 solution and was examined as a catalyst for the oxidative coupling of methane in a single-pass flow reactor system using on-line gas chromatography at atmospheric pressure. Catalytic reaction was performed ...
The controlled oxidation of methane to methanol is a chemical transformation of great value, particularly in the pursuit of alternative fuels, but the reaction remains underutilized industrially because of inefficient and costly synthetic procedures. In contrast, methane monooxygenase enzymes (MMOs) from ...