Effect of reaction variables on CO methanation process over NiO–La2O3–MgO/Al2O3 catalyst for coal to synthetic natural gas

Abstract

Reaction variables for methanation process were investigated using self-independently developed NiO-La 2 O 3 -MgO/Al 2 O 3 catalyst in a big lab scale reactor. The effects of reaction parameters, such as temperature, pressure, H 2 /CO flow ratio and space velocity on the activity of methanation catalyst were studied. 100 % CO conversion and 95 % of selectivity of methane can be achieved at 400°C and 3 MPa with the feed ratio of H 2 / CO as 3.25:1 and space velocity of 12,000 h -1 .The optimization reaction parameters were suggested on the basis of this work for the further development and commercialization of methanation catalyst.

Aqueous-Phase Glycerol Conversion over Ni-Based Catalysts Synthesized by Nanocasting

“…SH 2-gas followed a decreasing trend with X Gly , indicating more hydrogen was consumed in alkane formation as conversion increased. A similar trend was reported by others, suggesting that CO hydrogenation was lowered at short contact times [50].…”

Aqueous-Phase Reforming of Glycerol Over Pt-Co Catalyst: Effect of Process Variables

“…Though the space velocity employed was calculated on the liquid flowrate basis, the gases (H 2 , CO, CO 2 ) flowed with the liquid stream. Therefore, the S H2 trend suggested that CO/CO 2 hydrogenation (producing hydrogen loss in the gas phase) were lessened by the short contact times [65]. Analogous to X gas , a decrease in hydrogen yield and selectivity to methane could be observed with WHSV, with a concomitant increase on CO and CO 2 .…”

Effect of MgO Promoter on the Structure, Performance and Carbon Deposition of Ni‐Al2O3 Catalyst for CO Methanation Based‐on Slurry‐bed Reactor

“…And the small active component Ni could improve the dispersion on the carrier. [17,25] H 2 -TPR analysis Figure 2 shows the H 2 -TPR profiles of the calcinated samples. Temperature range of reduction peak at 350-550 °C is attributed to the reduction of free NiO, i. e. α-NiO.…”