In this study, a packed-bed dielectric barrier discharge (DBD) reactor was developed to investigate the removal of biomass tar in a fuel gas atmosphere. Toluene was used as the tar surrogate, and the catalyst used was a Nickel-based catalyst (Ni/gamma-Al2O3) because of its high activity and low cost. In addition, another two kinds of packing materi...
How to improve both the anti-sintering ability and the anti-coking ability of catalysts is still a big challenge in CO methanation for production of synthetic natural gas. To address the issue, we designed and synthesized a series of multicomponent Ni-Zr and Ni-Si-Zr catalysts with an ordered mesoporous structure by using an improved one-pot evapor...
To obviously reduce the sintering behavior of Ni particles in Ni/alpha-Al2O3 catalysts during CO methanation reaction, ZrO2 was deposited onto the Ni/a-Al2O3 catalyst surface by a modified impregnation method. It was observed that the ZrO2-modified catalyst with an appropriate amount of ZrO2 showed enhanced catalytic activity due to the increased H...
A series of MnOx-promoted Ni catalysts supported on Si waste contact mass (W) modified by Al2O3 were successfully prepared by the deposition-precipitation method for CO methanation. Compared with the Ni catalysts directly supported on W, Ni/Al2O3-Si and MnOx-promoted Ni-MnOx/Al2O3-Si catalysts exhibited much better catalytic performance for CO meth...
Ni catalysts supported on the raw bentonite (RB) and the acid-alkali treated bentonite (B), which were prepared by the impregnation method, were tested for methanation of CO2 and CO respectively to produce synthetic natural gas (SNG). XRD, nitrogen adsorption, SEM, TEM, TG, H-2-TPR, and XPS were employed for the characterization of the samples. The...
Preventing both the sintering of Ni particles and the coke formation in supported nickel (Ni) catalysts is a great challenge in catalysis. To address the problem, in this work, we have designed and synthesized a series of ternary Ni-V-Al metal oxide composites with desired structure and composition, for example, the ordered mesoporous structure an...
The Al2O3-CeO2 composite supported Ni catalyst was developed for synthetic natural gas (SNG) from bio-syngas methanation. The physico-chemical properties of the Ni-based catalysts were characterized by BET, H-2-TPR, XRD, SEM and TG. The methanation tests showed that Ni/Al2O3-CeO2 presented the highest methanation performances at low temperature (91...
Highly coke-resisting ZrO2-decorated Ni/Al2O3 catalysts for CO methanation were prepared by a two-step process. The support was first loaded with NiO by impregnating method and then modified with ZrO2 by deposition-precipitation method (IM-DP). Nitrogen adsorption-desorption, X-ray diffraction, scanning electron microscopy, transmission electron mi...
Highly coke-resisting ZrO2-decorated Ni/Al2O3 catalysts for CO methanation were prepared by a two-step process. The support was first loaded with NiO by impregnating method and then modified with ZrO2 by deposition-precipitation method (IM-DP). Nitrogen adsorption-desorption, X-ray diffraction, scanning electron microscopy, transmission electron mi...
We report the preparation of highly active, coking-and sintering-resistant CeO2-decorated Ni/gamma-Al2O3 catalysts by an impregnation method followed by a modified deposition-precipitation (DP) of CeO2. The samples were characterized by nitrogen adsorption, X-ray diffraction, scanning electron microscopy, transmission electron microscopy, thermogra...
