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Catalyst used for preparing furan from decarbonylation of furfural, and preparation method and application thereof

A technology for decarbonylation to produce furan and catalyst, which is applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve problems such as unsatisfactory results, and achieve experimental results. Mild conditions, simple preparation method and good stability

Active Publication Date: 2013-05-08
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] USSR342857 discloses a Pd catalyst for the production of methylfuran, and the selectivity of the reaction is improved by adding alkali metal K, but the result is not satisfactory

Method used

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  • Catalyst used for preparing furan from decarbonylation of furfural, and preparation method and application thereof
  • Catalyst used for preparing furan from decarbonylation of furfural, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Weigh 100mgPd / ml of Pd(NO 3 ) 2 Solution 1.5ml, diluted to 5ml with deionized water, 13.8ml Tween80 and 17.73ml isopropanol were mixed with 20ml cyclohexane under magnetic stirring in a constant temperature water bath at 25°C, and then Pd(NO 3 ) 2 Solution, magnetically stirred for a certain period of time until a transparent microemulsion was obtained; a certain amount of hydrazine hydrate was added to the above microemulsion to make the Pd(NO in the microemulsion 3 ) 2 Reduced to elemental Pd; weigh 100g Al 2 o 3 Carrier, impregnating the reduced microemulsion onto the carrier. Then it was dried and calcined to prepare the catalyst A, wherein the Pd content was 0.15wt%.

Embodiment 2

[0039] Weigh 200mgPd / ml of PdCl 2 Solution 1.0ml, dilute to 5ml with deionized water, mix 14.2ml TX-100 and 18.23ml n-butanol with 25ml n-octane in a constant temperature water bath at 25°C, and then add the metal salt solution diluted with water , magnetic stirring for a certain period of time until a transparent microemulsion is obtained; a certain amount of hydrazine hydrate is added to the above microemulsion to make the PdCl in the microemulsion 2 Reduced to elemental Pd; weigh 100gTiO 2 Carrier, impregnating the reduced microemulsion onto the carrier. Then it was dried and calcined to prepare the catalyst B, wherein the Pd content was 0.2wt%.

Embodiment 3

[0041] Weigh 200mgPd / ml of Pd(NO 3 ) 2 Solution 1.5ml, 300mgNi / ml Ni(NO 3 ) 2 1.0ml of the solution was diluted to 5ml with deionized water. Mix 10ml NP-10 and 5ml n-pentanol with 30ml cyclohexane in a constant temperature water bath at 20°C under magnetic stirring, then add metal salt solution diluted with water, stir magnetically for a certain period of time until a transparent microemulsion is obtained, and add to the above microemulsion A certain amount of potassium borohydride is added to the emulsion to reduce the metal ions in the metal salt solution in the microemulsion to a simple state. Weigh 100gAl 2 o 3 Carrier, the reduced microemulsion is sprayed on the carrier, then dried and calcined to prepare the catalyst C. Wherein the Pd content is 0.15wt%. Wherein the Ni content is 0.3wt%.

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Abstract

The invention provides a catalyst used for preparing furan from decarbonylation of furfural, and a preparation method and an application thereof. The active ingredients of the catalyst is prepared by a microemulsion method and loaded on a carrier, the main active ingredient Pd of the prepared catalyst has small particle size, narrow distribution and good dispersity, with the particle size smaller than 10 nm. The preparation method of the catalyst is simple, mild in operation conditions and easy to produce. When the catalyst is applied in a reaction for preparing furan from decarbonylation of furfural, the reaction has relatively high furfural conversion rate and the catalyst has relatively high activity and selectivity.

Description

technical field [0001] The present invention relates to a catalyst for preparing furan from furfural decarbonylation and its preparation method and application, in particular to a supported catalyst prepared with palladium as an active component by microemulsion technology, which is used for furfural decarbonylation furan. Background technique [0002] Furfural is a cheap and easy-to-obtain organic chemical raw material, which is generally produced from crop waste. my country is a large agricultural country, with an annual output of more than 100,000 tons of furfural, and the yield of furan produced by furfural decarbonylation is relatively high. Therefore, the production of furan from furfural decarbonylation has a good prospect. [0003] Vapor-phase decarbonylation of furfural to furan is a commonly used method for furan production in China, and the process is relatively mature. Previously used ZnO-Cr 2 o 3 , ZnO-Cr 2 o 3 -MnO 2 , ZnO-CdO-MnO-Al 2 o 3 and other ox...

Claims

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Application Information

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IPC IPC(8): B01J23/44B01J23/89B01J23/58C07D307/36
Inventor 王秀玲卫国宾戴伟
Owner CHINA PETROLEUM & CHEM CORP
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