Ordered mesoporous aluminosilicates with very low Si/Al ratio and stable tetrahedral aluminum sites for catalysis

Yang, Xiao‐Yu; Vantomme, Aurélien; Xiao, Feng‐Shou; Su, Bao‐Lian

doi:10.1016/j.cattod.2007.07.017

Cited by 18 publications

(6 citation statements)

References 56 publications

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“…Shortly after, Su et al prepared mesoporous aluminosilicates with the same precursor. [44] Low Si/Al ratios of 1.2 and 1.9 were obtained which is close to the desired value of 1. These results prove that Scheme 1. mASNF preparation by hard (black) and soft (blue) dual template approach.…”

Section: Resultssupporting

confidence: 70%

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Mesoporous Aluminosilicate Nanofibers with a Low Si/Al Ratio as Acidic Catalyst for Hydrodeoxygenation of Phenol

Haynes

D'hondt²,

Morritt

et al. 2019

ChemCatChem

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Mesoporous aluminosilicate nanofibers (mASNF) were prepared using hard and soft dual templates approach. The mesoporous material was fully characterized and its acidic nature was confirmed by FTIR spectroscopy of pyridine adsorption and 27Al/29Si solid state NMR. Thanks to the incorporated aluminum atoms, the acidic material showed high hydrothermal stability which is an essential property for biomass conversion applications. The catalytic performance of Pd supported on mASNF for hydrodeoxygenation (HDO) of lignin model compound was also investigated. A complete conversion and a high selectivity towards cyclohexane (up to 95 %) starting from phenol were achieved with this bifunctional catalyst. In comparison, no cyclohexane has been produced with a non‐acidic material which underlines the importance of acidic sites in HDO process selectivity control. Moreover, the catalyst can be recycled without losing its initial structure.

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Section: Resultssupporting

confidence: 70%

“…Shortly after, Su et al . prepared mesoporous aluminosilicates with the same precursor . Low Si/Al ratios of 1.2 and 1.9 were obtained which is close to the desired value of 1.…”

Section: Resultssupporting

confidence: 61%

Mesoporous Aluminosilicate Nanofibers with a Low Si/Al Ratio as Acidic Catalyst for Hydrodeoxygenation of Phenol

Haynes

D'hondt²,

Morritt

et al. 2019

ChemCatChem

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“…Incorporation of certain elements such as Ce, Sn and Zr into the framework of mesoporous molecular sieves has transformed them into more effective adsorbents [3][4][5]. Many synthesized mesoporous aluminosilicate have been used as catalyst in organic reactions [6][7][8][9][10][11][12][13], but only few studies have been reported on their use as adsorbents [14]. We report here the synthesis and characterization of mesoporous aluminosilicate with different mole ratio of Si/Al.…”

Section: Introductionmentioning

confidence: 96%

Adsorption Studies of Heavy Metal Ions on Mesoporous Aluminosilicate, Novel Cation Exchanger

Sepehrian

Ahmadi

Waqif-Husain

et al. 2010

Journal of Hazardous Materials

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“…[21,22] Zeolites,a sp romising porous supports,s hare core features as follows:1 )high surface area and strong interaction for stable dispersion of nanometals;2 )high physicochemical host stability for the structural integrity of the catalysts;3)highly ordered structure for high catalytic selectivity;a nd 4) high feasibility to various metals for practical applications. [29][30][31] Note that the specific adsorption sites in zeolites allow for the generation of nanoclusters of noble metals, creating ap artition between the exterior surface and the interior pores. [7] Furthermore,t he supercages in zeolites allow for the stabilization of unstable metal clusters,a nd offer an adjusting structure and volume to change the electronic configuration of nanometals, [32] whereby noble metals show very high catalytic activity and turnover frequency (TOF).…”

Section: Introductionmentioning

confidence: 99%

Confinement Effects in Zeolite‐Confined Noble Metals

2019

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Confinement of noble nanometals in a zeolite matrix is a promising way to special types of catalysts that show significant advantages in size control, site adjustment, and nano‐architecture design. The beauty of zeolite‐confined noble metals lies in their unique confinement effects on a molecular scale, and thus enables spatially confined catalysis akin to enzyme catalysis. In this Minireview, the confined synthesis strategies of zeolite‐confined noble metals will be briefly discussed, showing the processes, advantages, features, and mechanisms. The confined catalysis carried on zeolite‐confined noble metals will be summarized, and great emphasis will be paid to the confinement effects involving size, encapsulation, recognition, and synergy. Great progress of atomic sites in the size effect, supercage stabilization in the encapsulation effect, site adsorption in the recognition effect, and cascade reaction in the synergy effect are highlighted. This Minireview is concluded with challenges and opportunities in terms of the synthesis of zeolite‐confined noble metals and their applications to design multifunctional catalysts with high catalytic activity, selectivity, and stability.

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Ordered mesoporous aluminosilicates with very low Si/Al ratio and stable tetrahedral aluminum sites for catalysis

Cited by 18 publications

References 56 publications

Mesoporous Aluminosilicate Nanofibers with a Low Si/Al Ratio as Acidic Catalyst for Hydrodeoxygenation of Phenol

Mesoporous Aluminosilicate Nanofibers with a Low Si/Al Ratio as Acidic Catalyst for Hydrodeoxygenation of Phenol

Adsorption Studies of Heavy Metal Ions on Mesoporous Aluminosilicate, Novel Cation Exchanger

Confinement Effects in Zeolite‐Confined Noble Metals

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