Hydrogen production by steam reforming of liquefied natural gas (LNG) over ordered mesoporous nickel–alumina catalyst

Hydrogen production by steam reforming of liquefied natural gas (LNG) over mesoporous Ni/Al2O3 catalyst prepared by an EDTA-assisted impregnation method

“…However, the nickel-based catalysts with poor nickel dispersion prepared by an impregnation method are not only unfavorable for efficient hydrogen production but also vulnerable to catalyst deactivation caused by sintering and carbon deposition. Therefore, many attempts such as co-precipitation [27], sol-gel processing [28,29], templating [30,31], and promoter addition [32][33][34] have been made to enhance catalytic activity and stability of the nickel-based catalysts in the steam reforming reaction by increasing nickel dispersion of the catalysts.…”

Hydrogen production by steam reforming of ethanol over dual-templated Ni–Al2O3 catalyst

“…The rod-like mesopores were formed by the removal of cylindrical micelle assembly through thermal decomposition of micelle during the evaporation-induced self-assembly process. Thus, the rod-like mesoporous structure was successfully formed in both catalysts via evaporation-induced self-assembly method as attempted in this work [16].…”

“…A dual-templated Ni-Al 2 O 3 catalyst (denoted as SINA) was prepared by a single-step evaporation-induced self-assembly (EISA) method using P123 and ionic liquid as templates according to the similar methods reported in the literature [16]. 2.3 g of (EO) 20 (PO) 70 (EO) 20 triblock copolymer (Pluronic P123, Sigma-Aldrich) and 0.5 g of ionic liquid (1-hexadecyl-3-methylimidazolium chloride monohydrate, Acros) were dissolved in anhydrous ethanol (50 ml) at room temperature with constant stirring for 4 h (Solution A).…”

“…In particular, soft templates such as surfactants have been widely used for the synthesis of ordered mesoporous materials [13][14][15]. Since the discovery of supramolecular-templated mesoporous materials such as MCM-41 and M41S, ordered mesoporous alumina has been successfully prepared by an evaporation-induced self-assembly (EISA) method using P123 as a surfactant material [16][17][18]. Mixtures of templates have also been employed to achieve mesoporous http://dx.doi.org/10.1016/j.cattod.2015.07.041 0920-5861/© 2015 Elsevier B.V. All rights reserved.…”

Facile synthesis of highly ordered mesoporous chromium–alumina catalysts with improved catalytic activity and stability

“…Unidimensionally OMA or aluminasupported metal oxides are formed by removing cylindrical micelle assembly through thermal decomposition of micelle. According to the previous studies, [23][24][25] the OMA supports with high surface area can remarkably increase the dispersity of active metal particles and effectively prevent their aggregation by the so-called confinement effect during high temperature calcination and catalytic reaction. In other words, activity and stability of the catalysts can be improved by finely dispersing active metal throughout the mesoporous alumina supports.…”