Hydrogen production from coke oven gas over LiNi/γ-Al2O3 catalyst modified by rare earth metal oxide in a membrane reactor

Chemical looping and oxygen permeable ceramic membranes for hydrogen production – a review

“…Table 5 summarises syngas production from methane and extends the review in 2004 by Thursfield and Metcalfe 125 . Table 6 summarises syngas production from other hydrocarbon sources [208][209][210][211][212][213][214][215][216][217][218][219][220][221][222] . A recent excellent review by Dong et al 5 has presented a broad range of process applications for electroceramic OTMs e.g., oxidative coupling of methane (OCM) and electroceramic proton conductors for hydrogen production.…”

Study on Steam Reforming of Tar in Hot Coke Oven Gas for Hydrogen Production

“…At present, COG has been being highly investigated via some chemical methods (such as partial oxidation and catalytic reforming of CO 2 or steam) to convert tar and other hydrocarbon components in COG to light fuel gases or H 2 -rich syngas and, meanwhile, to increase the syngas volume, using the sensible heat and chemical energy in hot COG. − ,,,− As a result of the complex components of real tar, toluene, benzene, naphthalene, and 1-methylnaphthalene were normally selected as tar model compounds and the researchers mainly studied their conversions to light fuel gases via hydrocracking reactions or steam reforming at a lower steam/carbon (S/C) molar ratio. ,,, For hydrogen production or hydrogen amplification in COG, some reports used methane (the mole fraction of which amounts to 24–28% in COG) or purified COG (tar-free) via steam reforming or partial oxidation reforming. ,− For the COG containing tar, partial oxidation was studied widely. Cheng et al investigated hydrogen production from simulated hot COG with toluene as a model tar compound by partial oxidation and found that the amount of H 2 in the outlet gas was about 2 times more than that of original H 2 in the inlet gas.…”

“…The catalyst has a very important role on the steam reforming of tar, and various catalysts have been tested for catalytic steam reforming of tar or its model compounds, including natural minerals (dolomite and olivine) , and synthetic catalysts (Ni-based catalysts ,,,− ,,, and noble-metal-based catalysts , ). Among them, Ni-based catalysts with Al 2 O 3 as a carrier were widely studied because of the high catalytic activity for tar cracking and their low cost. − , However, common Ni-based catalysts were easily deactivated because of carbon deposition and sintering or the loss of an active Ni component at a high temperature; thus, the catalysts were often modified by adding assistant metals or changing carrier.…”

Preparation and performance of Ni‐based catalysts supported on Ca12Al14O33 for steam reforming of tar in coke oven gas

“…Catalytic reforming is considered to be the most potential method of converting tar, and has widely been investigated for reducing tar in the biomass gasification process , and the investigations on the catalytic reforming of tar in hot COG were also reported in the recent years . Catalyst is known to be important for hydrogen production from the reforming process, and especially nickel‐based catalysts supported on Al 2 O 3 are widely used because of their effective catalytic activities for the cleavage of CC bond and the low costs . However, the common Ni‐based catalysts were deactivated easily due to carbon deposition and sintering or loss of active Ni component.…”