Barium-silicon tungsten oxygen cluster catalyst, preparation method and application thereof

A catalyst, silicon tungsten technology, applied in the field of preparation of alcohol oxidation catalyst materials, can solve the problems of large catalyst consumption and low activity, achieve good catalytic activity, facilitate industrial production, and facilitate easy separation

Inactive Publication Date: 2017-05-10
LIAOCHENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of this invention is to solve the problems of low catalyst activity and large catalys

Method used

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  • Barium-silicon tungsten oxygen cluster catalyst, preparation method and application thereof
  • Barium-silicon tungsten oxygen cluster catalyst, preparation method and application thereof
  • Barium-silicon tungsten oxygen cluster catalyst, preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Embodiment 1: compound [Ba 2 (H 2 O) 9 ] SiW 12 o 40 10H 2 Preparation of O

[0031] Add barium chloride (3mmol), sodium silicate (2mmol), sodium tungstate (30mmol) and water 15mL sequentially into a 25mL polytetrafluoroethylene reaction kettle, stir for 2h, then add dilute hydrochloric acid to adjust the pH to 4, and then React at 120°C for 3 days, cool to room temperature, and filter to obtain colorless crystals [Ba 2 (H 2 O) 9 ] SiW 12 o 40 10H 2 O. The yield is about 44%.

Embodiment 2

[0032] Embodiment 2: compound [Ba 2 (H 2 O) 9 ] SiW 12 o 40 10H 2 Preparation of O

[0033] Add barium chloride (3mmol), sodium silicate (3mmol), sodium tungstate (32mmol) and water 16mL sequentially into a 25mL polytetrafluoroethylene reactor, stir for 2h, then add dilute hydrochloric acid to adjust the pH to 4, Reacted at 130 °C for 3 days, cooled to room temperature, and filtered to obtain colorless crystals [Ba 2 (H 2 O) 9 ] SiW 12 o 40 10H 2 O. The yield is about 48%.

Embodiment 3

[0034] Embodiment 3: compound [Ba 2 (H 2 O) 9 ] SiW 12 o 40 10H 2 Preparation of O

[0035] Add barium chloride (4mmol), sodium silicate (3mmol), sodium tungstate (35mmol) and water 18mL sequentially into a 25mL polytetrafluoroethylene reactor, stir for 5h, then add dilute hydrochloric acid to adjust the pH to 6, React at 160°C for 6 days, cool to room temperature, and filter to obtain colorless crystals [Ba 2 (H 2 O) 9 ] SiW 12 o 40 10H 2 O. The yield is about 62%.

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Abstract

The invention belongs to the technical field of preparation of alkaline earth metal modified silicon tungsten oxygen cluster catalyst materials, and in particular relates to a preparation method and application of a binuclear barium-silicon tungsten oxygen cluster catalyst. The catalyst can realize selective oxidation reaction of benzyl alcohol compounds, the conversion rate is as high as 93.6%, and the selectivity is as high as 96.5%.

Description

technical field [0001] The invention belongs to the technical field of preparation of alcohol oxidation catalyst materials, and relates to the preparation technology of a barium-silicotungsten oxide cluster catalyst, which lays the foundation for its catalytic application. [0002] technical background [0003] Since the 1970s, since the industrialization of silicotungstic acid catalyzed hydration of propylene to isopropanol has been realized, the research on metal oxygen cluster compounds has attracted widespread attention at home and abroad. Then, it reported [VO(H 2 O) 5 ]H[PMo l2 o 40 ] Catalyze the nitration reaction of alkanes. The research on the catalytic properties of POMs by many academic and industrial scholars has greatly promoted the development of metal oxygen cluster catalysis science and technology. [0004] Alcohol catalytic oxidation reactions play a very important role in daily chemical production. Because its corresponding product aldehydes or ketone...

Claims

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Application Information

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IPC IPC(8): B01J31/16B01J27/188C07C45/29C07C47/55C07C47/54C07C47/542C07C47/575C01B33/24
CPCB01J23/30B01J27/188C01B33/24C01P2002/77C01P2002/87C07C45/294C07C47/55C07C47/54C07C47/542C07C47/575
Inventor 王勇宋永玉宋莹莹薛泽春
Owner LIAOCHENG UNIV
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