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Catalyst for production of isoprene by 1-butene

A technology of isoprene and catalyst is applied in the field of chemical raw material preparation to achieve the effects of improving catalytic activity, increasing loading rate and good selectivity

Inactive Publication Date: 2017-08-18
ANHUI HAIDE PETROCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no industrialization case in the industry, and the production of isoprene is mainly carried out in two steps

Method used

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  • Catalyst for production of isoprene by 1-butene

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Embodiment 1

[0024] A catalyst for producing isoprene from 1-butene: comprising the steps of:

[0025] Catalyst for producing isoprene by 1-butene through alkenal synthesis method, with nano-activated carbon as carrier, 6 parts of SbF 5 / SiO 2 -ZrO 2 , ZrO 2 SO 4 、WO 3 ZrO 2 as the active ingredient, with 5 parts of bentonite as the auxiliary agent. Prepared by reverse drop precipitation method, dissolve the soluble matter of Sb, Zr and W in 200ml of 10% ethanol solution, stir for 30min, and configure a mixed solution with a concentration of 0.5mol / L, wherein the ratio of Sb, Zr and W is 0.05-0.05-0.1, under the condition of constant temperature stirring at 55°C, use a constant flow pump to add the mixed solution dropwise to 100ml 2mol / L precipitant solution, the constant flow pump speed is 60 rpm; stir for 0.6 hours, then Then add a certain concentration and a certain amount of NaOH solution, let it stand for precipitation overnight, and then use a vacuum pump to filter, wash, dry ...

Embodiment 2

[0030] A catalyst for producing isoprene from 1-butene: comprising the steps of:

[0031] 1-Butene is a catalyst for the production of isoprene by enaldehyde synthesis, with nano-activated carbon as the carrier, and 8 parts of SbF 5 / SiO 2 -ZrO 2 , ZrO 2 / ZrO 2 SO 4 、WO 3 ZrO 2 as the active ingredient, with 6 parts of bentonite as the auxiliary agent. Prepared by reverse drop precipitation method, dissolve the soluble matter of Sb, Zr and W in 200ml of 10% ethanol solution, stir for 45min, and configure a mixed solution with a concentration of 0.5mol / L, wherein the ratio of Sb, Zr and W is 0.05-0.05-0.1, under the condition of constant temperature stirring at 45°C, use a constant flow pump to add the mixed solution dropwise to 100ml 2mol / L precipitant solution, the speed of the constant flow pump is 40 rpm; stir for 0.5 hours, then Then add a certain concentration and a certain amount of NaOH solution, let it stand for precipitation overnight, and then filter it with ...

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Abstract

The invention discloses a catalyst for production of isoprene by 1-butene, and relates to the technical field of chemical separation and synthesis. Particularly, the catalyst for production of the isoprene by the 1-butene is prepared by taking anno activated carbon as a carrier, taking 5-25 parts by weight of SbF5 / SiO2-ZrO2, ZrO2SO4, WO3ZrO3 and the like as active ingredients, taking one or more of 5-10 parts of bentonite, silicate or strontium salt as an auxiliary, taking sodium carbonate, ammonium hydrogen carbonate, sodium hydroxide, ammonia water and acetic acid as precipitators, and taking deionized water, distilled water and dehydrated alcohol as detergents, using an anti-dropwise adding precipitation method, standing, precipitating, ageing over the whole night, filtering by a vacuum pump, washing, roasting and forming. By the preparation method of the catalyst, the load rate and the catalytic activity of the catalyst are improved; the catalyst has the characteristics of good selectivity and high catalytic efficiency; and the yield of the isoprene produced from the 1-butene can be improved.

Description

[0001] Technical field: [0002] The invention relates to the technical field of chemical raw material preparation, in particular to a catalyst for producing isoprene from 1-butene. [0003] Background technique: [0004] Isoprene is the basic component of synthetic rubber. The structure and properties of isoprene are basically the same as those of natural rubber. It is mainly used in isoprene rubber, styrene-isoprene-styrene block copolymer and butyl rubber. Rubber, etc., which are also widely used in pesticides, medicines, spices, sprays and adhesives, etc., but the source of raw materials is limited. At present, the price of polymer-grade isoprene in the domestic market has been running at a high level, and it is expected that the growth of isoprene that can be obtained from ethylene in China will be limited in the next few years. At present, there are mainly three production methods of isoprene, the extraction distillation method of carbon fraction, the dehydrogenation met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/30C07C1/247C07C11/18C07D319/06
CPCC07C1/247C07D319/06B01J23/30B01J37/035B01J35/615B01J35/633C07C11/18
Inventor 黄帮义
Owner ANHUI HAIDE PETROCHEM
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