Preparation of La2NiO4/ZSM-5 catalyst and catalytic performance in CO2/CH4 reforming to syngas

Investigation on Reverse Water–gas Shift over La2NiO4 Catalyst by Cw-cavity Enhanced Absorption Spectroscopy During CH4/CO2 Reforming

“…Besides the absorption lines of CH 4 , we observed that the water absorption line increased in intensity as shown in figure 2d. In our previous studies of the CH 4 / CO 2 reforming [3,5], even though the feed ratio of CH 4 and CO 2 was the same, the CO 2 conversion were always 3-5% higher than that of CH 4 , which indicates that the RWGS reaction promoted the conversion of CO 2 . The observation is in good agreement with the results obtained under the condition of pulsed jet expansion by CEAS technique.…”

“…This supported the phenomenon we observed by quenching the reaction and trapping the species by liquid-N 2 . In addition, we found that for the MS signal of the other species, such as CH 3 and H 2 O, the abundance of OH was always higher than that of H 2 O except for the position of strong peaks. It indicated that OH fragment was partly produced from the ionization of other species instead of H 2 O.…”

“…CO+H 2 ) with a H 2 /CO ratio of 1:1 is more suitable for Fisher-Tropsch synthesis for the production of liquid hydrocarbons [1,2]. The CO 2 /CH 4 reforming reaction has been studied over numerous supported metal catalysts, such as Ni-based [3][4][5][6][7] and noble metal catalysts [8,9]. However, it is more practical, from the industrial standpoint, to develop Ni-based catalysts that not only possess high stability and catalytic activity, but also are more economical than a catalyst of precious metal.…”

Comparative study of the dry reforming of methane on fluidised aerogel and xerogel Ni/Al2O3 catalysts

“…There are two peaks between 400 and 650°C, a strong TPO peak along with a shoulder peak can be observed for the spent AG20NiAl and XG-20NiAl catalysts, indicating two types of deposited carbon were formed on the active metal sites. On the used AG-20NiAl, the major peak centres at 530°C, corresponding to the amorphous carbon, while the shoulder peak centring at 580°C may be attributed to the fibrous graphitic carbon [9,21,25]. The weight ratio between the amorphous and filamentous carbon on the AG-20NiAl catalyst is 75:25 (%).…”

Synthesis, characterization and catalytic performances of Ce-SBA-15 supported nickel catalysts for methane dry reforming to hydrogen and syngas

“…The weight loss peak at low temperatures (250e350 C) can be attributed to the oxidation of active carbon, or amorphous carbon, and the one at high temperatures (>550 C) can be attributed to the oxidation of the inert carbon, namely, graphitic carbon [56,57]. The total weigh loss of spent samples increased with the following sequence: Ni/Ce-SBA-15 (R ¼ 0.04) (7.6%) < Ni/Ce-SBA-15 (R ¼ 0.06) (9.6%) < Ni/SBA-15 (11.2%).…”