Role of trace chlorine in Ni/TiO2 catalyst for CO selective methanation in reformate gas

Methanol oxidative decomposition over zirconia supported silver catalyst and its reaction mechanism

“…The various metal oxide supported metal catalysts were prepared by the impregnation method [44]. The following metal oxides were used as support materials: ZrO 2 (JRC-ZRO-3 and JRC-ZRO-2), CeO 2 (JRC-CEO-3), MgO (JRC-MGO-4 500A) provided by the Catalysis Society of Japan; MnO 2 (MN-280) provided by Clariant Catalysts (Japan) K.K.…”

Preferential Methanation of CO using Halogen‐Doped (F, Cl, Br) Ceria‐Supported Nickel Catalysts

“…The positive effect of chlorine additives on the catalyst selectivity was also demonstrated in Ref. . It was associated with the inhibition of the CO 2 methanation reaction by blocking the ceria surface sites responsible for CO 2 activation .…”

“…[9][10][11][12][13] Thep ositive effect of chlorinea dditives on the catalyst selectivity wasa lso demonstrated in Ref. [14][15][16].I tw as associated with the inhibition of the CO 2 methanation reactionb yb locking the ceria surface sites responsible for CO 2 activation. [12] However, the effects of other halogen additiveso nt he performanceo f nickel-ceria catalysts for the CO-SMET have not been studied yet.In this Communication we report the properties of F-, Cl-, and Br-doped8 wt %N i/CeO 2 catalysts prepared by the treatment of halogen-free Ni/CeO 2 with the aqueous solutions of NH 4 F, NH 4 Cl, and NH 4 Br, respectively, for the CO-SMET,a nd the properties are correlated with catalyst characterization data.…”

Methanation of CO in hydrogen-rich gas on Ni–Ru/SiO2 catalyst: The type of active sites and Ni–Ru synergistic effect

“…However, trace CO molecules, the poison for the anode in PEMFCs, are generated during the reforming process. The hydrogen-rich reforming gas, therefore, must be purified to remove CO molecules prior to be used as fuel for PEMFCs [7,8].…”