An Efficient Route to Highly Organized, Tunable Macroporous−Mesoporous Alumina

Dacquin, Jean‐Philippe; Dhainaut, Jérémy; Duprez, Daniel; Royer, Sébastien; Lee, Adam F.; Wilson, Karen

doi:10.1021/ja9056486

Cited by 126 publications

(79 citation statements)

References 23 publications

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“…Because hard template spheres were formed in a micrometer size (*100 nm), the resulting solids have macropores in general [47]. By applying the microspheres to the synthetic method of mesoporous materials, bimodal porous materials incorporating two distinct pore networks can be generated [48,49]. For example, when Pluronic P123 organic surfactant as a soft-template and polystyrene beads as a hard-template were used together, hierarchical macroporous-mesoporous oxides were produced with high surface area and high crystallinity (Fig.…”

Section: Macroporous Mesoporous Oxidesmentioning

confidence: 99%

Nanocatalysis I: Synthesis of Metal and Bimetallic Nanoparticles and Porous Oxides and Their Catalytic Reaction Studies

Somorjai

2014

Catal Lett

133

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In recent heterogeneous catalysis, much effort has been made in understanding how the size, shape, and composition of nanoparticles and oxide-metal interfaces affect catalytic performance at the molecular level. Recent advances in colloidal synthetic techniques enable preparing diverse metallic or bimetallic nanoparticles with welldefined size, shape, and composition and porous oxides as a high surface support. As nanoparticles become smaller, new chemical, physical, and catalytic properties emerge. Geometrically, as the smaller the nanoparticle the greater the relative number of edge and corner sites per unit surface of the nanoparticle. When the nanoparticles are smaller than a critical size (2.7 nm), finite-size effects such as a change of adsorption strength or oxidation state are revealed by changes in their electronic structures. By alloying two metals, the formation of heteroatom bonds and geometric effects such as strain due to the change of metal-metal bond lengths cause new electronic structures to appear in bimetallic nanoparticles. Ceaseless catalytic reaction studies have been discovered that the highest reaction yields, product selectivity, and process stability were achieved by determining the critical size, shape, and composition of nanoparticles and by choosing the appropriate oxide support. Depending on the pore size, various kinds of micro-, meso-, and macro-porous materials are fabricated by the aid of structure-directing agents or hardtemplates. Recent achievements for the preparation of versatile core/shell nanostructures composing mesoporous oxides, zeolites, and metal organic frameworks provide new insights toward nanocatalysis with novel ideas.

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Section: Macroporous Mesoporous Oxidesmentioning

confidence: 99%

Nanocatalysis I: Synthesis of Metal and Bimetallic Nanoparticles and Porous Oxides and Their Catalytic Reaction Studies

Somorjai

2014

Catal Lett

133

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“…Cinnamic acid addition promoted undesired cinnamyl alcohol decarbonylation over Pd at the expense of its selective oxidation to cinnamaldehyde. Spatial separation of the selective oxidation step over Pd which produces cinnamaldehyde, from that over Pt which produces cinnamic acid, and controlling the sequence of these two reactions such that cinnamic acid is only formed after the alcohol has already undergone oxidation to the aldehyde is thus 29 .…”

mentioning

confidence: 99%

Spatially orthogonal chemical functionalization of a hierarchical pore network for catalytic cascade reactions

et al. 2015

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. (2016) 'Spatially orthogonal chemical functionalization of a hierarchical pore network for catalytic cascade reactions.', Nature materials., 15 (2). pp. 178-182.Further information on publisher's website:Publisher's copyright statement:Additional information: Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-pro t purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details.

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“…Materials with interpenetrating, bimodal meso-macropore networks have been prepared using microemulsion [90] or co-surfactant [91] templating routes and are particularly attractive for liquid phase, flow reactors wherein rapid pore diffusion is required. Liquid crystalline (soft) and colloidal polystyrene nanospheres (hard) templating methods have been combined to create highly organised, macro-mesoporous aluminas [92] and 'SBA-15 like' silicas [93] (Scheme 4), in which both macro-and mesopore diameters can be independently tuned over the range 200-500 and 5-20 nm, respectively. The resulting hierarchical pore network of a propylsulfonic acid functionalised macro-mesoporous SBA-15 is shown in Fig.…”

Section: Heterogeneously Catalysed Routes To Biodieselmentioning

confidence: 99%

Catalysing sustainable fuel and chemical synthesis

Lee

2014

Appl Petrochem Res

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Concerns over the economics of proven fossil fuel reserves, in concert with government and public acceptance of the anthropogenic origin of rising CO 2 emissions and associated climate change from such combustible carbon, are driving academic and commercial research into new sustainable routes to fuel and chemicals. The quest for such sustainable resources to meet the demands of a rapidly rising global population represents one of this century's grand challenges. Here, we discuss catalytic solutions to the clean synthesis of biodiesel, the most readily implemented and low cost, alternative source of transportation fuels, and oxygenated organic molecules for the manufacture of fine and speciality chemicals to meet future societal demands.

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An Efficient Route to Highly Organized, Tunable Macroporous−Mesoporous Alumina

Cited by 126 publications

References 23 publications

Nanocatalysis I: Synthesis of Metal and Bimetallic Nanoparticles and Porous Oxides and Their Catalytic Reaction Studies

Nanocatalysis I: Synthesis of Metal and Bimetallic Nanoparticles and Porous Oxides and Their Catalytic Reaction Studies

Spatially orthogonal chemical functionalization of a hierarchical pore network for catalytic cascade reactions

Catalysing sustainable fuel and chemical synthesis

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