A comparative study using in situ Raman, H2-TPR, O2-TPD and pulse reaction of CH4 techniques were performed over the Rh/Al2O3 calcined at 600 and 900 ℃ to elucidate the effect of high temperature calcination on the chemical state of the Rh species on Al2 O3 and its relationship with the performance of the catalysts for methane partial oxidation to syngas.
The maximal conversion of methane is 97.4%, in the optimal conditions of input power 120KW and the ratio of N2 /CH4 1.7, the conversion of methane is 88.4% and the yields of carbon black and C2 are 42.1% and 42.2% respectively, and the specific energy is 10.8KWh/kg(C2H2+C).
On the other hand, we do experiments as testing table L25(56) in the inner circular gradientless reactor by magnetic force beater, and investigate the four factors -temperature, speed velocity of CH4, CO2/ΣC, H2O/ΣC how to effect on the reaction of Z412W.
The effects of MgO promoter on the physicochemical properties and catalytic performance of Ni/Al2O3 catalysts for the partial oxidation of methane to syngas were studied by means of BET, XRD, H2-TPR, TEM and performance evaluation.
Moreover, for the catalysts with a proper amount of MgO promoter, the nickel dispersiveness was enhanced, therefore making their catalytic performance in methane partial oxidation improved.
The plasma catalyst treatment could totally change the distribution of aromatic products with higher methane conversion compared to the untreated catalyst.
Besides precursors, methane as the carbon source and hydrogen as the ablation, oxygen or H2O was alternatively inlet into the reactive chamber at the pressure of 0.05 MPa.
Results from scanning electron microscope (SEM) and transmission electron microscope (TEM) showed that CNTs grown in CH4/H2 (38.6%/61.4%, volume) mixture have many defects and contained disordered graphitic materials.
The results of calculating the thermal conductivities of nine low-density molecular gases N2, O2, NO, CO, CO2, N2O, CH4, CF4, and SF6 obtained using the modified Eucken correction are compared with the standard results.
Wenn man annimmt, da? in Methan Wasserstoff als negatives Ion auftritt, l??t sich ein Molekülmodell berechnen, das mit experimentellen Daten im Einklang ist.
Es wird die Dispersion in Methan und Ammoniak bestimmt, und die Eigenwellen-l?ngen werden aus den den Dispersionsverlauf sehr gut wiedergebenden vierkonstantigen Formeln berechnet.
The carbonization test of Zalenol lignite is per(?)ormed in a small fixed bed reactor at 0.1-5.1 MPa, 300-900℃ in H_2 or N_2 with various additives for the purpose of producing more gas of higher heating value suitable for town gas.The experimental results indicate that carbonization temperature is important to yield gas with high heating value and 600-700℃ is the optimum range.The effects of pressure on gas and tar yield are significant. The heating value of gas is larger than 4000 kcal/Nm~3 either in N_2 ...
A method for investigating the thermal explosion of condensed systems under isothermal condition has been presented, and the critical temperature, induction period and pre-explosional heating of the thermal explosion of trinitromethane has been experimentally investigated. The results indicates that selfaccelerating reaction and heat accumulation are the main factors of the transition from thermal decomposition to thermal explosion for trinitro-methane under isothermal condition.