Mesoporous silicas as supports for Ni catalyst used in cellulose conversion to hydrogen rich gas

Grams, Jacek; Potrzebowska, Natalia; Gościańska, Joanna; Michalkiewicz, Beata; Ruppert, Agnieszka M.

doi:10.1016/j.ijhydene.2015.12.146

Cited by 31 publications

(19 citation statements)

References 59 publications

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“…Due to its high specific surface area and very particular pore size distribution, KIT-6 ordered mesoporous silica with Ia3d symmetric structure has been recently considered as support in the preparation of catalysts for various processes [31][32][33][34][35][36][37][38][39]. For example, Ni-KIT-6 were examined in pyrolysis of cellulose [39], Ni-La/KIT-6 catalysts were tested in CO2 reforming [38]; Ni-V/KIT-6, Ni-Ce/KIT-6, Ni-La/KIT-6 and Ni-Mn/KIT-6 in CO methanation [33]; Cu/KIT-6 for thiophene removal [35]; SO4 2− /Zr-KIT-6 for esterification of oleic acid [31]; and Ti/KIT-6 for epoxidation of cyclohexene [32]. However, to the best of our knowledge there are no studies reporting the use of yttrium as promoter on Ni-containing KIT-6 supported catalysts for dry reforming applications.…”

Section: Introductionmentioning

confidence: 99%

Syngas production from dry methane reforming over yttrium-promoted nickel-KIT-6 catalysts

Świrk

Gálvez

Motak

et al. 2019

International Journal of Hydrogen Energy

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Dry reforming of methane was studied over Ni,Y-promoted KIT-6 ordered mesoporous silicas, prepared by incipient impregnation (nickel content 12 wt.%, yttrium content of 4 wt.%, 8 wt.% or 12 wt.%). The catalysts were characterized by XRF, FT-IR, TGA/DSC-MS, N2-adsorption, TEM, HRTEM, XRD and TPR-H2. The promotion with 8 wt.% Y (Y/Si=0.05) resulted in the highest activity and H2/CO molar ratio closer to the stoichiometric value at temperatures from 600 to 750°C. The characterization results of the yttrium promoted materials showed higher reducibility of the bulk NiO, bigger Ni crystallite size after reduction and DRM test, and better dispersion of nickel in the channels of the KIT-6 support. Additionally, larger Ni particles were observed on the external surface of the support, which may be related to catalytic selectivity towards carbon forming reactions. Upon dry methane reforming the segregated phases of Niº, Y2O3, and possibly Y2Si2O7 were registered. No presence of a Ni,Y alloy was observed.

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Section: Introductionmentioning

confidence: 99%

Syngas production from dry methane reforming over yttrium-promoted nickel-KIT-6 catalysts

Świrk

Gálvez

Motak

et al. 2019

International Journal of Hydrogen Energy

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“…It has been reported that the types of metal and support play an important role in increasing the efficiency of the conversion process. 8 Mesoporous catalysts can improve the development of new biofuel generation processes because of their important properties such as high concentration of active sites, high thermal/ hydrothermal stability and enhanced shape selectivity. 9 One of the most widely used mesoporous supports is SBA-15 and it has a high specic surface area, excellent thermal stability, tunable porosity, and uniform hexagonal pores and thick pore walls.…”

Section: Introductionmentioning

confidence: 99%

“…13 During biomass conversion, nickel-based catalysts upgrade the composition of the liquid phase. 8 However, nickelbased catalysts are more easily deactivated because of carbon deposition and active metal species sintering; during harsh reactions, the tendency of carbon deposition hinders stable catalytic performance. 14 Designing catalysts with strong metalsupport interactions and well connement of metal particles is one possible solution for this drawback.…”

Section: Introductionmentioning

confidence: 99%

Well-dispersed nickel nanoparticles on the external and internal surfaces of SBA-15 for hydrocracking of pyrolyzed α-cellulose

et al. 2019

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“…The 3-D pore system in Al-SBA-1 is capable of resistance to pore blocking and effortless diffusion of reactant molecules, while the mass transfer is limited in the HZSM-5 catalyst. Grams et al [115] prepared nickel-based catalysts supported on different kind of mesoporous silica including MCM-41, SBA-15, SBA-16 and KIT-6. They found that the different structure properties would considerably influence the yield of the examined reaction.…”

Section: Structurementioning

confidence: 99%

Oriented Decoration in Metal-Functionalized Ordered Mesoporous Silicas and Their Catalytic Applications in the Oxidation of Aromatic Compounds

et al. 2018

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Ordered mesoporous silicas (OMSs) attract considerable attention due to their advanced structural properties. However, for the pristine silica materials, the inert property greatly inhibits their catalytic applications. Thus, to contribute to the versatile surface of OMSs, different metal active sites, including acidic/basic sites and redox sites, have been introduced into specific locations (mesoporous channels and framework) of OMSs and the metal-functionalized ordered mesoporous silicas (MOMSs) show great potential in the catalytic applications. In this review, we first present the categories of metal active sites. Then, the synthesized processes of MOMSs are thoroughly discussed, in which the metal active sites would be introduced with the assistance of organic groups into the specific locations of OMSs. In addition, the structural morphologies of OMSs are elaborated and the catalytic applications of MOMSs in the oxidation of aromatic compounds are illustrated in detail. Finally, the prospects for the future development in this field are proposed.

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Mesoporous silicas as supports for Ni catalyst used in cellulose conversion to hydrogen rich gas

Cited by 31 publications

References 59 publications

Syngas production from dry methane reforming over yttrium-promoted nickel-KIT-6 catalysts

Syngas production from dry methane reforming over yttrium-promoted nickel-KIT-6 catalysts

Well-dispersed nickel nanoparticles on the external and internal surfaces of SBA-15 for hydrocracking of pyrolyzed α-cellulose

Oriented Decoration in Metal-Functionalized Ordered Mesoporous Silicas and Their Catalytic Applications in the Oxidation of Aromatic Compounds

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