Fabrication of mesoporous silica thin films inside microreactors

Kataoka, Sho; Endo, Akira; Harada, Atsuhiro; Ohmori, Takao

doi:10.1016/j.matlet.2007.06.068

Cited by 30 publications

(26 citation statements)

References 22 publications

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“…2. The VS-n samples (n = 0.5, 1.0, 1.5 and 2.0) show type IV isotherms and H2 hysteresis loops, which are typical of the mesoporous SBA-16 materials with 3D cage-like structures [1,35,36]. However, the VS-2.5(1.60) displays type IV isotherms with Table 1.…”

Section: N 2 Adsorption-desorptionmentioning

confidence: 96%

One-pot Hydrothermal Synthesis of Mesoporous V-SBA-16 with a Function of the pH of the Initial Gel and its Improved Catalytic Performance for Benzene Hydroxylation

et al. 2012

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V-SBA-16 catalysts with uniform cubic mesoporous structure were prepared by direct hydrothermal method as a function of the pH of the initial gel and characterized by ICP, XRD, TEM, N 2 adsorption-desorption, DRUV-vis and Raman spectra. The pH of the initial gel in synthesis of V-SBA-16 show important effects on the maintenance of well ordered mesoporous structure, introduced vanadium content and the incorporation of vanadium into the network of SBA-16 type mesoporous material. The initial gel system with a pH value of 2.0 was found to be a suitable for incorporation of vanadium and retaining the mesostructure of SBA-16. The catalytic activities of V-SBA-16 catalysts were evaluated for the hydroxylation of benzene using molecular O 2 as the oxidant. The highest phenol yield of 30.4% with a selectivity of 90% and turnover number of 105 were obtained over the VS-2.0 (1.67) sample prepared at the initial gel system with pH value of 2.0, which is attributed to its high V content and uniform framework V species that highly dispersed on the well ordered SBA-16 type mesoporous materials.

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Section: N 2 Adsorption-desorptionmentioning

confidence: 96%

One-pot Hydrothermal Synthesis of Mesoporous V-SBA-16 with a Function of the pH of the Initial Gel and its Improved Catalytic Performance for Benzene Hydroxylation

et al. 2012

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“…Similar to the synthesis of SBA-16 silica [9,10], Cu-SBA-16 was prepared under acidic condition, using Pluronic F127 triblock copolymer as a structure-directing agent and tetraethyl orthosilicate (TEOS) as the silica source. In addition, CuCl 2 was added into the reaction mixture with a molar composition that 0.90 TEOS:0.09 Cu 2?…”

Section: Synthesis Of Cu-sba-16mentioning

confidence: 99%

“…Figure 3 shows the nitrogen adsorption-desorption isotherms of SBA-16, CuO/SBA-16 and Cu-SBA-16. All isotherms are of type IV according to the IUPAC classification and exhibit a typical H2 hysteresis loop, which are characteristics of cubic cage-like pore structure of SBA-16 [10,28]. The pore structure parameters that calculated from The data illustrate that the surface area of CuO/SBA-16 catalyst decreases from 382 to 139.2 m 2 /g after the impregnation of Cu, accompanying with the decrease in the pore volume from 0.367 to 0.189 cm 3 /g, which suggest that the CuO species is located mainly on the surface of the SBA-16 mesoporous silica, and partial pores may be blocked by CuO species [28].…”

Section: Ir Spctramentioning

confidence: 99%

“…The problem may be that a different pH range was expected for the formation of ordered structure (pH ( 1) and for the introduction of metal species (pH [ 1) in one-pot hydrothermal synthesis [2]. Evaporation induced self-assembly (EISA) strategy has been successfully applied to the synthesis of ordered mesoporous silica materials (SBA-15, SBA-16) and various mesoporous metal oxides (TiO 2 , ZrO 2 , Al 2 O 3 , WO 3 and SnO 2 ) utilizing triblock copolymer as the template [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

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One-Pot Synthesis and Characterization of Cu-SBA-16 Mesoporous Molecular Sieves as an Excellent Catalyst for Phenol Hydroxylation

et al. 2010

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“…Pre-mixed solution of 3,4-dihydro-2H-pyran and alcohol (1 M, 1:1) is loaded in reservoir A and mobilized through the packed-bed comprising solid-supported acid catalyst. Collection of reaction products is done at reservoir reactor created in (Kataoka et al 2008) used silicon wafer and borosilicate glass as planar substrates. Mesoporous silica films (MPS) acts as catalyst supports on inner wall of borosilicate microcapillary tubes in reactors.…”

Section: Liquid Phase Reactormentioning

confidence: 99%

Lab-on-a-chip: a component view

2010

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Miniaturization is being increasingly applied to biological and chemical analysis processes. Lab-on-a-chip systems are direct creation of the advancement in the miniaturization of these processes. They offer a host of exciting applications in several areas including clinical diagnostics, food and environmental analysis, and drug discovery and delivery studies. This paper reviews labon-a-chip systems from their components perspective. It provides a categorization of the standard functional components found in lab-on-a-chip devices together with an overview of the latest trends and developments related to lab-on-a-chip technologies and their application in nanobiotechnology. The functional components include: injector, transporter, preparator, mixer, reactor, separator, detector, controller, and power supply. The components are represented by appropriate symbols allowing designers to present their lab-on-a-chip products in a standard manner. Definition and role of each functional component are included and complemented with examples of existing work. Through the approach presented in this paper, it is hoped that modularity and technology transfer in lab-on-achip systems can be further facilitated and their application in nanobiotechnology be expanded 1 Introduction

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Fabrication of mesoporous silica thin films inside microreactors

Cited by 30 publications

References 22 publications

One-pot Hydrothermal Synthesis of Mesoporous V-SBA-16 with a Function of the pH of the Initial Gel and its Improved Catalytic Performance for Benzene Hydroxylation

One-pot Hydrothermal Synthesis of Mesoporous V-SBA-16 with a Function of the pH of the Initial Gel and its Improved Catalytic Performance for Benzene Hydroxylation

One-Pot Synthesis and Characterization of Cu-SBA-16 Mesoporous Molecular Sieves as an Excellent Catalyst for Phenol Hydroxylation

Lab-on-a-chip: a component view

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