Highly dispersible cerium-oxide modified Ni/SBA-15 for steam reforming of bio-mass based JP10

Zhang, Haocui; Xiao, Zhourong; Yang, Mei; Zou, Ji‐Jun; Liu, Guozhu; Zhang, Xiangwen

doi:10.1016/j.cjche.2022.01.016

Cited by 9 publications

(3 citation statements)

References 63 publications

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“…The amorphous behavior of silica was identified by the presence of a band between 20° and 30° and the absence of other peaks. The presence of these bands is observed in the high-angle region in Figure 2A for SBA, and the same behavior is observed in Figure 2B for EXSBA, indicating that the characteristic of amorphous silica typical of SBA-15 was obtained and maintained after loading [36][37][38] .…”

Section: X-ray Diffraction Analysissupporting

confidence: 73%

TEOS Silane Film Modified with SBA-15 Loaded with Cocoa Husk Extract as Pretreatment of ASTM 1008 Steel

Silva,

Carrijo-Gonçalves,

Barreto

et al. 2024

Mat. Res.

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Research on eco-friendly methods led to the investigation of natural inhibitors and silane films modified with nanostructured mesoporous silica (SBA-15), a molecular sieve that can carry molecules with inhibitory properties. Combining natural extracts such as cocoa husk with SBA-15 aims to develop an enhanced silane-based pretreatment. This involves obtaining an alcoholic extract, and then mixing it with SBA-15 to modify the silane film. Different concentrations (1%, 2%, and 3%) of SBA-15 loaded with extract were prepared. Electrochemical tests, especially electrochemical impedance spectroscopy (EIS), in a 0.1 mol/L NaCl solution, revealed improved corrosion resistance with the tetraethylorthosilane (TEOS) film modified using 3% SBA-15 loaded with extract. Scanning electron microscopy showed the film and SBA-15 on the steel surface, while Fourier transform infrared spectroscopy identified functional groups characteristic of SBA-15, pure or loaded, and silane film. Therefore, it was possible to enhance the TEOS silane film by adding SBA-15 loaded with plant residue extract.

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Section: X-ray Diffraction Analysissupporting

confidence: 73%

TEOS Silane Film Modified with SBA-15 Loaded with Cocoa Husk Extract as Pretreatment of ASTM 1008 Steel

Silva,

Carrijo-Gonçalves,

Barreto

et al. 2024

Mat. Res.

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“…However, because the relative scarcity and high prices of noble metals, large-scale use will inevitably increase costs. Therefore, the development of non-noble metal-based catalysts for fuel steam reforming has received increasing attention in recent years [20,21]. Ni-based catalysts have become a hot research topic due to their high activity and relatively low operating costs [22].…”

Section: Introductionmentioning

confidence: 99%

Perovskite-Derivative Ni-Based Catalysts for Hydrogen Production via Steam Reforming of Long-Chain Hydrocarbon Fuel

Guo,

Zhang,

Zhang

et al. 2024

Catalysts

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Large-scale hydrogen production by the steam reforming of long-chain hydrocarbon fuel is highly desirable for fuel-cell application. In this work, LaNiO3 perovskite materials doped with different rare earth elements (Ce, Pr, Tb and Sm) were prepared by a sol-gel method, and the derivatives supported Ni-based catalysts which were successfully synthesized by hydrogen reduction. The physicochemical properties of the as-prepared catalysts were characterized by powder X-ray diffraction, high-resolution transmission electron microscopy, N2 adsorption–desorption isotherms, H2 temperature-programmed reduction, and X-ray photoelectron spectroscopy. The catalytic performance of the as-prepared catalysts for hydrogen production was investigated via the steam reforming of n-dodecane. The results showed that the catalyst forms perovskite oxides after calcination with abundant mesopores and macropores. After reduction, Ni particles were uniformly distributed on perovskite derivatives, and can effectively reduce the particles’ sizes by doping with rare earth elements (Ce, Pr, Tb and Sm). Compared with the un-doped catalyst, the activity and hydrogen-production rate of the catalysts are greatly improved with rare earth element (Ce, Pr, Tb and Sm)-doped catalysts, as well as the anti-carbon deposition performance. This is due to the strong interaction between the uniformly distributed Ni particles and the support, as well as the abundant oxygen defects on the catalyst surface.

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“…Mesoporous materials, such as SBA-15, are of interest as catalyst supports for transition metals due to their high surface areas and well-defined pore structures [1,2]. The mesoporous structure may prevent sintering of the supported metal nanoparticles due to the spatial isolation of the particles [3][4][5], may enhance selectivity for some reactions due to the molecular-sieving effect of the uniform pores [6,7], and may even suppress catalyst coking in some cases [8][9][10]. An interesting example that demonstrates the potential importance of having the catalyst particles within the mesopores comes from the work of Agirrezabal-Telleria et al, who studied ethene dimerization over Ni within Al-MCM-41 [8,9].…”

Section: Introductionmentioning

confidence: 99%

Preparation of SBA-15-Supported Metals by Vapor-Phase Infiltration

et al. 2022

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A simple method is presented for incorporating various catalytic metals into the pores of SBA-15 using vapor-phase infiltration. The precursors used in Atomic Layer Deposition (ALD) for Pt, Pd, Rh, Ru, and Ni were exposed to an evacuated SBA-15, resulting in monolayer films of the adsorbed precursors inside the mesopores. The metal particles that formed after removal of the precursor ligands remained in the pores and had particle sizes ranging from 3.8 nm for Pt to 5.2 nm for Ni, as determined by Transmission Electron Microscopy (TEM), XRD, and CO chemisorption. Metal loadings for saturation exposures ranged from 5.1-wt% for Ni to 9.1-wt% for Pt; however, uniform deposition was demonstrated for lower loadings of Pd by decreasing the amount of precursor. To determine the effect of the surface composition of the mesopores, Pd particles were also added to SBA-15 that was coated with a 0.2-nm film of ZrO2.

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Highly dispersible cerium-oxide modified Ni/SBA-15 for steam reforming of bio-mass based JP10

Cited by 9 publications

References 63 publications

TEOS Silane Film Modified with SBA-15 Loaded with Cocoa Husk Extract as Pretreatment of ASTM 1008 Steel

TEOS Silane Film Modified with SBA-15 Loaded with Cocoa Husk Extract as Pretreatment of ASTM 1008 Steel

Perovskite-Derivative Ni-Based Catalysts for Hydrogen Production via Steam Reforming of Long-Chain Hydrocarbon Fuel

Preparation of SBA-15-Supported Metals by Vapor-Phase Infiltration

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