Vapor-phase direct hydration of ethylene over zirconium tungstate catalyst II. Catalytic behavior at high pressures

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

doi:10.1016/0021-9517(82)90196-8

Cited by 13 publications

(3 citation statements)

References 2 publications

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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, 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. 25–30 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: Resultsmentioning

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 20–24 and also used as acid catalysts for various reactions. 25–30 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%