Channel-Selective Independent Sorption and Collection of Hydrophilic and Hydrophobic Molecules by Cs2[Cr3O(OOCC2H5)6(H2O)3]2[α-SiW12O40] Ionic Crystal

Jiang, Chunjie; Lesbani, Aldes; Kawamoto, Ryosuke; Uchida, Sayaka; Mizuno, Noritaka

doi:10.1021/ja065732r

Cited by 92 publications

(51 citation statements)

References 12 publications

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“…In the case of Cs 3 -PW12, the ratio of Cs + /(heteropoly anion) required to achieve charge balance was three due to the trivalent Keggin-POM and is consistent with that required for a bcc structure. In other words, all of the cation and anion sites are occupied with Cs + and [PW 12 O 40 ] 3-ions, respectively (Fig. 8A).…”

Section: Surface Areas Porosities and Pore Structures Of Cs Saltsmentioning

confidence: 99%

Microporous cesium salts of tetravalent Keggin-type polyoxotungstates Cs4[SiW12O40], Cs4[PW11O39(Sn-n-C4H9)], and Cs4[PW11O39(Sn-OH)] and their adsorption properties

Miura

Imai

Yokoi

et al. 2013

Microporous and Mesoporous Materials

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ABSTRACTwere synthesized. The crystalline structures, which had body-centered cubic (bcc) arrangements, the lattice constants, and the pore-size distributions of the three Cs salts were similar, regardless of the presence or absence and types of functional groups introduced. The Cs salts had only micropores and no mesopores. The micropore size distributions were determined from adsorption isotherms of Ar, which showed a sharp peak at 0.59 nm and a shoulder at 0.62 nm. The fractions of the external surface areas to the total surface areas of the Cs salts were less than 6%. It is plausible that the micropores originate from the heteropoly anion defects in the crystallite, which form to avoid mismatches in the Cs + /(heteropoly anion) ratio required for charge balance (= 4) and for a bcc structure (= 3). The surface of the Cs salt introduced with n-butyl groups was hydrophobic, although the surface density of the n-butyl groups was low. On the other hand, the hydroxyl groups present on the surface of Cs 4 [PW 11 O 39 (Sn-OH)] had little effect on the adsorption of water, methanol, ethanol, and hexane but a great impact on that for benzene due to the interactions between the -OH groups and the aromatic rings (-OH···π).3

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Section: Surface Areas Porosities and Pore Structures Of Cs Saltsmentioning

confidence: 99%

Microporous cesium salts of tetravalent Keggin-type polyoxotungstates Cs4[SiW12O40], Cs4[PW11O39(Sn-n-C4H9)], and Cs4[PW11O39(Sn-OH)] and their adsorption properties

Miura

Imai

Yokoi

et al. 2013

Microporous and Mesoporous Materials

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“…As a new interdisciplinary subject, polyoxometalates chemistry is playing an increasingly important role in the catalysis, medicine,material science fields [1][2]. Compared with the traditional catalysts, heteropoly acid and its salts have received far attention becaused of unique acidic (i.e.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of iso-amyl acetate using [(CH2)5NH2]5BMO12O40 as catalyst

2016

Int. J. Curr. Res. Chem. Pharm. Sci

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Synthesis of iso-amyl acetate using [(CH2)5NH2]5BMO12O40 as catalyst has been studied. Factors influencing the synthesis were discussed. The optimized conditions are: molar ratio of iso-pentanol to acetic acid is 1. 2∶ 1; the quantity of catalyst is equal to 1. 5% of the feed stock, the reaction temperature is 110℃ and the reaction time is 1.5h. [(CH2)5NH2]5BMO12O40 is an excellent catalyst for synthesizing iso -amyl acetate with high yield o f 95. 3% .

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“…As a new interdisciplinary subject, polyoxometalates chemistry is playing an increasingly important role in the catalysis, medicine, material science fields [1][2]. Compared with the traditional catalysts, heteropoly acid and its salts have received far attention because of unique acidic (i.e.…”

Section: Introductionmentioning

confidence: 99%

Epoxidation of fatty acid Methyl Esters Catalyzed by [(CH2)5NH2]5BMO12O40 Catalyst

Ding¹

2016

Int. J. Curr. Res. Chem. Pharm. Sci

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The action of the title catalyst with H2O2 leads to a formation of homogeneous phase and an accelerated reaction rate. The catalyst will precipitate in solid particles with the consumption of H2O2 and the decreasing temperature, its recovery is up to 90% and catalytic activity is almost unchanged after six consecutive uses. The effect of reaction conditions on the epoxidation and H2O2 utilization was investigated. Under the conditions of reaction time 2.5h,catalyst 0.3g, stepwise addition of 30%H2O2 3.5（30.88 mmol, reaction temperature 65 ℃,1,2-dichloroethane 20 mL, FAMEs 5.0（22.84 mmol double bond, the product epoxy value is up to 5.78%,double bond epoxidation selectivity 81.9% and H2O2 utilization 86%.

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Channel-Selective Independent Sorption and Collection of Hydrophilic and Hydrophobic Molecules by Cs₂[Cr₃O(OOCC₂H₅)₆(H₂O)₃]₂[α-SiW₁₂O₄₀] Ionic Crystal

Cited by 92 publications

References 12 publications

Microporous cesium salts of tetravalent Keggin-type polyoxotungstates Cs4[SiW12O40], Cs4[PW11O39(Sn-n-C4H9)], and Cs4[PW11O39(Sn-OH)] and their adsorption properties

Microporous cesium salts of tetravalent Keggin-type polyoxotungstates Cs4[SiW12O40], Cs4[PW11O39(Sn-n-C4H9)], and Cs4[PW11O39(Sn-OH)] and their adsorption properties

Synthesis of iso-amyl acetate using [(CH2)5NH2]5BMO12O40 as catalyst

Epoxidation of fatty acid Methyl Esters Catalyzed by [(CH2)5NH2]5BMO12O40 Catalyst

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