In situ synthesis of Ni/MgO catalysts on inorganic paper-like matrix for methane steam reforming

Miura, Shin; Umemura, Yuuka; Shiratori, Yusuke; Kitaoka, Takuya

doi:10.1016/j.cej.2013.06.052

Cited by 22 publications

(12 citation statements)

References 30 publications

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“…(2) The paper composites were calcined at 600 °C for 5 h to remove pulp and to strengthen the composites by sintering the alumina sol binder, resulting in a change in the crystalline structure of the alumina sol binder from boehmite to γ-alumina. (3) Direct synthesis of Pd catalysts on the paper-structured composites was performed using the formed γ-alumina as a scaffold for Pd species [23][24][25][26][27][28]. The process for making the paper-structured catalysts is simpler and more easily scaled up than the manufacturing processes for other microstructured catalysts and MSRs.…”

Section: Characteristics Of Pd-containing Paper-structured Catalystsmentioning

confidence: 99%

“…Paper-structured catalysts were fabricated using a previously reported wet papermaking process [23][24][25][26][27][28]. The papermaking procedure can be summarized as follows.…”

Section: Catalyst Preparationmentioning

confidence: 99%

“…In our previous studies, we developed fibrous catalysts made of inexpensive ceramic fibers using a high-speed and low-cost papermaking technique. The wet-laid structures, termed paper-structured catalysts, are easy to fabricate, easy to handle, have micrometer-sized pores, and show excellent performances in both gas-and liquid-phase reactions [23][24][25][26]. Ru(OH) x synthesized on the alumina/silica fiber surfaces of paper composites provided efficient oxidation of benzyl alcohol to benzaldehyde in a fixed-bed gas-liquid-solid multiphase reactor [27].…”

Section: Introductionmentioning

confidence: 99%

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Solvent-free alcohol oxidation using paper-structured catalysts: Flow dynamics and reaction kinetics

Homma

Kitaoka

2016

Chemical Engineering Journal

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Section: Characteristics Of Pd-containing Paper-structured Catalystsmentioning

confidence: 99%

“…Paper-structured catalysts were fabricated using a previously reported wet papermaking process [23][24][25][26][27][28]. The papermaking procedure can be summarized as follows.…”

Section: Catalyst Preparationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Solvent-free alcohol oxidation using paper-structured catalysts: Flow dynamics and reaction kinetics

Homma

Kitaoka

2016

Chemical Engineering Journal

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“…15 To increase the mechanical resistance, different binder agents are used, which allow the joining of the fibers and give stiffness and flexibility to the arrangement. This kind of substrate has been used for many types of reactions such as catalytic combustion of soot; 14,15 steam reforming of hydrocarbons; 16,17 methane dry reforming; 18 toluene removal; 19 reduction of 4-nitrophenol; 20 selective catalytic reduction of NO x with C 3 H 6 , 21 NH 3 , 22 and CH 4 ; 23 and methanol reforming, 24 among others.…”

Section: Introductionmentioning

confidence: 99%

“…In brief, the deposition of a catalytic formulation onto a suitable substrate has a positive effect on the ethylene productivity compared with powder forms and constitutes an interesting topic for further investigation. In this sense, a paperlike structure composed of a fibers network with interconnected porelike spaces could constitute an adequate environment that favors the effective diffusion of the reagents and products throughout the catalytic bed. − The heat transfer could also be enhanced, which is useful for exothermic-type reactions such as the oxidative dehydrogenation reactions.…”

Section: Introductionmentioning

confidence: 99%

New Formulations of Ni-Containing Ceramic Papers to Enhance the Catalytic Performance for the Oxidative Dehydrogenation of Ethane

Bortolozzi

Banús

Milt

et al. 2014

Ind. Eng. Chem. Res.

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Ceramic papers composed of silica−alumina fibers structured using colloidal suspensions as binders constitute interesting materials to be used as flexible supports of catalytic materials. The deposition of Ni as the active ingredient together with Zr or Ce promoters resulted in active and selective structured catalysts for the oxidative dehydrogenation of ethane; these structured catalysts also exhibited acceptable mechanical properties. The employed binder agents (nanoparticles of ceria, zirconia, or yttria-stabilized zirconia) homogeneously covered the fiber surface, contributing to the dual function of building a threedimensional arrangement and favoring the anchoring of the catalytic formulations. The prepared papers showed nickel oxide as the active phase. The incorporation of cerium or zirconium as promoters enhanced the catalytic properties. The former element mainly produced an increase in ethane conversion, whereas the latter markedly improved ethylene selectivity. In both cases, an ethylene productivity was obtained in the promoted systems which was higher than that in the unpromoted samples. It is likely that the formation of the solid solutions Ni−Ce−O and Ni−Zr−O, as suggested by X-ray diffraction and laser Raman spectroscopy analyses, plays an important role in these effects. The best catalyst was the one containing nickel as the active phase, Ce as the promoter, and ZrY as the binder agent, for which ethylene productivity at 400 °C was ca. 513 g ethylene/(kg cat h). The binder agent addition was necessary to join the fibers, thus improving the mechanical properties of the papers, but they also affected the catalytic performance through the coverage of ceramic fibers and the resulting interaction with the catalytic compounds. The performed tensile index tests showed that the colloidal suspension of ceria produced papers with mechanical properties better than those of zirconia or zirconia−yttria because they exhibited greater resistance and flexibility.

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Recent Advances in Bimetallic Catalysts for Methane Steam Reforming in Hydrogen Production: Current Trends, Challenges, and Future Prospects

Yusuf,

Umar,

Kotob

et al. 2023

Chemistry An Asian Journal

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As energy demand continues to rise and the global population steadily grows, there is a growing interest in exploring alternative, clean, and renewable energy sources. The search for alternatives, such as green hydrogen, as both a fuel and an industrial feedstock, is intensifying. Methane steam reforming (MSR) has long been considered a primary method for hydrogen production, despite its numerous advantages, the activity and stability of the conventional Ni catalysts are major concerns due to carbon formation and metal sintering at high temperatures, posing significant drawbacks to the process. In recent years, significant attention has been given to bimetallic catalysts as a potential solution to overcome the challenges associated with methane steam reforming. Thus, this review focuses on the recent advancements in bimetallic catalysts for hydrogen production through methane steam reforming. The review explores various aspects including reactor type, catalyst selection, and the impact of different operating parameters such as reaction temperature, pressure, feed composition, reactor configuration, and feed and sweep gas flow rates. The analysis and discussion revolve around key performance indicators such as methane conversion, hydrogen recovery, and hydrogen yield.

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In situ synthesis of Ni/MgO catalysts on inorganic paper-like matrix for methane steam reforming

Cited by 22 publications

References 30 publications

Solvent-free alcohol oxidation using paper-structured catalysts: Flow dynamics and reaction kinetics

Solvent-free alcohol oxidation using paper-structured catalysts: Flow dynamics and reaction kinetics

New Formulations of Ni-Containing Ceramic Papers to Enhance the Catalytic Performance for the Oxidative Dehydrogenation of Ethane

Recent Advances in Bimetallic Catalysts for Methane Steam Reforming in Hydrogen Production: Current Trends, Challenges, and Future Prospects

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