Catalytic properties and stability of cubic mesoporous LaxNiyOz/KIT-6 catalysts for CO2 reforming of CH4

Guo, Yan Hui; Xia, Chun; Liu, B.S.

doi:10.1016/j.cej.2013.09.108

Cited by 47 publications

(34 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…All catalysts prepared by ALD showed outstanding activity in comparison to benchmark dry reforming catalysts. Table S1 summarizes activities of recently published Ni catalysts for DRM [39][40][41][42][43][44][45][46][47][48][49][50][51], several of which are described as highly active, indicating the high benefits to catalytic activity of the ALD synthesis route. The higher activity of NiO-5 compared to the catalysts of Gould et al [39] (ALD with alumina supported Ni nanoparticles) can be attributed to a higher Ni: support ratio (rates per mole of Ni are the same order of magnitude), allowing for a majority Ni-nanoparticle catalyst.…”

Section: Resultsmentioning

confidence: 98%

Alumina coated nickel nanoparticles as a highly active catalyst for dry reforming of methane

Baktash

Littlewood

Schomäcker

et al. 2015

Applied Catalysis B: Environmental

120

View full text Add to dashboard Cite

Section: Resultsmentioning

confidence: 98%

Alumina coated nickel nanoparticles as a highly active catalyst for dry reforming of methane

Baktash

Littlewood

Schomäcker

et al. 2015

Applied Catalysis B: Environmental

120

View full text Add to dashboard Cite

“…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

View full text Add to dashboard Cite

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.

show abstract

“…Bands around 1075 cm −1 and the identified shoulder at 1227 cm −1 are typical bands referring to asymmetric stretches of the Si-O-Si bonds. The band an 806 cm −1 are attributed to symmetrical stretches of the Si-O-Si bonds, and the bands near 959 and 455 cm −1 refer respectively to the symmetrical and asymmetric stretches of the Si-O bonds of the Si-OH groups [37].…”

Section: Resultsmentioning

confidence: 99%

Influence of Synthesis Parameters in Obtaining KIT-6 Mesoporous Material

et al. 2018

View full text Add to dashboard Cite

In the present work, modifications were made in the typical synthesis of KIT-6 mesoporous material. The molar ratio of P123 and its dissolution time, the type of alcohol, the aging time, and the heat treatment time were varied. The materials obtained were characterized by X-ray diffraction (XRD), thermogravimetry and differential thermogravimetry (TG/DTG), Fourier-transform infrared spectroscopy (FTIR), adsorption and desorption of N 2 and transmission electron microscopy (TEM). It was observed that the modifications interfered directly in the ordered structure of materials, displaying materials with cubic structures Ia3d (KIT-6 mesoporous material) and hexagonal structures P6mm, (SBA-15 mesoporous material). The type of alcohol probably acts on generation of the micelle, influencing the formation of the porous system and ordered structure. The results obtained indicate that the cubic structure of KIT-6 can be formed with a reduction of 30% in the P123 concentration, and decreases of 2, 6 and 12 h in times of P123 dissolution, aging and heat treatment, respectively. The modifications carried out in the synthesis procedure have resulted in ir being possible to employ materials with different characteristics, such as mesoscopic ordering and textural properties, in applications in the areas of catalysis and adsorption.

show abstract

Catalytic properties and stability of cubic mesoporous LaxNiyOz/KIT-6 catalysts for CO2 reforming of CH4

Cited by 47 publications

References 36 publications

Alumina coated nickel nanoparticles as a highly active catalyst for dry reforming of methane

Alumina coated nickel nanoparticles as a highly active catalyst for dry reforming of methane

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

Influence of Synthesis Parameters in Obtaining KIT-6 Mesoporous Material

Contact Info

Product

Resources

About