ChemInform Abstract: VAPOR‐PHASE DIRECT HYDRATION OF ETHYLENE OVER ZIRCONIUM TUNGSTATE CATALYST. I. ATALYTIC BEHAVIOR AND KINETICS AT ATMOSPHERIC PRESSURE

Momose, Hiroo; Kusumoto, Koshi; Izumi, Yūsuke; Mizutani, Yukio

doi:10.1002/chin.198252111

Cited by 3 publications

(4 citation statements)

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“…For ethylene hydration, partially reduced tungsten oxide, such as W 2 O 5 , has shown some, although not high, catalytic activity, 125 and amorphous zirconium tungstate ZrW 2-8 O 0.5-3.5 has shown high catalytic activity. Zirconium tungstate with a composition of W/Zr ) 2 provided the highest activity.…”

Section: Zirconium Tungstatementioning

confidence: 99%

Water-Tolerant Solid Acid Catalysts

2002

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ContentsI. Introduction 3641 II. Zeolites 3642 1. Organic Reactions in Water Catalyzed by Zeolites 3642 2. Hydrophobicity of Zeolites 3646 3. Acidic Property of Zeolites 3647 III. Heteropolyacid 3648 1. Acidity of Liquid Heteropolyacids 3648 2. Aqueous Organic Reactions Catalyzed by Liquid Heteropolyacids 3649 3. Biphasic System Consisting of Aqueous Phase 3650 4. Solid Heteropoly Compounds That Are Active in Water 3651 i. Microstructure 3651 ii. Acidity of Solid Heteropoly Compounds 3652 iii. Hydrophobicity 3653 iv. Organic Reactions in Water 3653 IV. Oxides and Phosphates 3656 1. Niobic Acid 3656 2. MoO 3 −ZrO 2 3657 3. Zirconium Tungstate 3658 4. Zirconium Phosphate 3658 5. Lanthanum Phosphate 3659 6. Niobium Phosphate 3660 V. Organic−Inorganic Composites 3661 1. Polymer Resin−Silica Composites 3661 2. Mesoporous Organic Composites 3661 VI. Lewis Acids and Organometallic Catalysts 3662 VII. Closing 3663 VIII. Acknowledgments 3663 IX. References 3663

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Section: Zirconium Tungstatementioning

confidence: 99%

Water-Tolerant Solid Acid Catalysts

2002

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“…It is known that ZrW 2 O 8 can act as a cation exchanger and acid catalyst. [25][26][27][28][29][30] However, the ion exchange properties were mainly studied for amorphous zirconium tungstate rather than well-crystallised non-porous samples. Altass and Khder investigated the acidic sites of amorphous zirconium tungstate, 29 which varied in ZrW x O y compositions.…”

Section: Paper Dalton Transactionsmentioning

confidence: 99%

“…18,19 As for the chemical and catalytic properties, they were mostly investigated for amorphous, compositionally diverse zirconium tungstates, which were employed as cation-exchangers [20][21][22][23][24] and also used as acid catalysts for various reactions. [25][26][27][28][29][30] So far, only a few cases of using amorphous zirconium tungstates for oxidation catalysis have been documented. In particular, Zr 2 W 3 O 13 •15H 2 O nanoparticles were used for the oxidation of benzyl alcohol 28 while Na 3 Zr 3 W 5 O 22 Cl was employed for the photocatalytic degradation of dyes.…”

Section: Introductionmentioning

confidence: 99%

Heterogeneous H₂O₂-based selective oxidations over zirconium tungstate α-ZrW₂O₈

Evtushok,

Ivanchikova,

Zalomaeva

et al. 2024

Dalton Trans.

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“…l4 The apparent activation energy was 46 kJ/mol on the present H-F zeolite, compared with 126 kJ/mol on zirconium tungstate. 3…”

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confidence: 99%

Gas-phase hydration of ethylene over a proton-exchanged ferrierite-type zeolite catalyst

Iwamoto¹,

Tajima²,

Kagawa³

1985

J. Chem. Soc., Chem. Commun.

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The gas-phase hydration of ethylene over a proton-exchanged ferrierite-type catalyst attains approximate equilibrium at 473-673 K, contact time 3.0-6.0 g s mi-1, space velocity 571-286 h-1, with a molar ratio of H20 to C2H4 of 1 : 1, under 1 atmosphere pressure.Although supported phosphoric acid is the preferred industrial catalyst for gas-phase ethanol synthesis from ethylene and water, it has the disadvantage that the phosphoric acid may vapourize during the reaction, resulting in a decrease in catalytic activity and corrosion of equipment. Tungstosilicic the ferrierite-type and ZSM-5-type zeolites.

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ChemInform Abstract: VAPOR‐PHASE DIRECT HYDRATION OF ETHYLENE OVER ZIRCONIUM TUNGSTATE CATALYST. I. ATALYTIC BEHAVIOR AND KINETICS AT ATMOSPHERIC PRESSURE

Cited by 3 publications

References 1 publication

Water-Tolerant Solid Acid Catalysts

Water-Tolerant Solid Acid Catalysts

Heterogeneous H₂O₂-based selective oxidations over zirconium tungstate α-ZrW₂O₈

Gas-phase hydration of ethylene over a proton-exchanged ferrierite-type zeolite catalyst

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ChemInform Abstract: VAPOR‐PHASE DIRECT HYDRATION OF ETHYLENE OVER ZIRCONIUM TUNGSTATE CATALYST. I. ATALYTIC BEHAVIOR AND KINETICS AT ATMOSPHERIC PRESSURE

Cited by 3 publications

References 1 publication

Water-Tolerant Solid Acid Catalysts

Water-Tolerant Solid Acid Catalysts

Heterogeneous H2O2-based selective oxidations over zirconium tungstate α-ZrW2O8

Gas-phase hydration of ethylene over a proton-exchanged ferrierite-type zeolite catalyst

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Heterogeneous H₂O₂-based selective oxidations over zirconium tungstate α-ZrW₂O₈