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Catalyst for preparing isopropanol by hydrogenating acetone as well as preparation method and application thereof

A catalyst and isopropanol technology, which is applied in molecular sieve catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of unfavorable large-scale industrial application and complex loading of Raney nickel in the catalyst, and achieve excellent acetone processing The performance of producing isopropanol from hydrogen, the preparation method is simple, and the effect of good stability

Active Publication Date: 2014-12-24
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In Japanese published patent No. 3-141235, when Raney nickel is used as hydrogenation catalyst, the conversion rate of acetone and the selectivity of isopropanol all reach more than 99%, but Raney nickel is relatively complicated in catalyst loading, which is not conducive to For its large-scale industrial application, it is of great significance to develop new non-precious metal catalysts for this reaction.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Weigh 15.8 g of diatomaceous earth, place it in a muffle furnace, and roast at 600°C for 6 hours at a heating rate of 1°C / min to obtain the pretreated carrier.

[0028] Weigh 2.59g of ammonium tungstate dissolved in water to prepare a 0.1mol / L solution, then add the carrier pretreated with the carrier, immerse for 10h and then slowly evaporate to dryness in a water bath at 80℃, and place the sample in an oven at 100℃ Dry overnight, then put the above carrier in an ethylene atmosphere, the space velocity of ethylene is 6000h -1 , The pressure is 0.1MPa, the temperature is raised to 600°C at 1°C / min and carbonized for 6 hours, then it is reduced to room temperature at 2.5% O 2 / Ar mixed gas passivation for 8h, after cooling down to room temperature in 2%O 2 / Ar mixture was passivated for 8 hours to obtain a metal carbide carrier. Weigh 15.59g of hydrated nickel nitrate into deionized water to prepare a 2mol / l aqueous solution, and then add it to the previously obtained catalys...

Embodiment 2

[0031] Weigh 16.6g of carrier SBA-15 and place it in a muffle furnace, and dehydrate at 500°C for 7 hours at a heating rate of 2°C / min to obtain the pretreated carrier.

[0032] Weigh 0.736 g of ammonium molybdate dissolved in deionized water to form an aqueous solution of 0.15 mol / l and add it to the pretreated carrier, let it stand for 6 hours, dry in a water bath at 80°C, and place it in an oven at 120°C for 18 hours. The obtained sample is in CO:H 2 =1:1 carbonization atmosphere at 700℃ for 8h, CO+H 2 The space velocity of the mixed gas is 6000h -1 , The pressure is 0.2MPa, when the temperature drops to room temperature, 1% O 2 / Ar mixture is passivated for 8 hours to obtain a carrier loaded with carbide. Weigh 11.7g of nickel nitrate dissolved in deionized water, configure it into a certain volume of aqueous solution, and then add it dropwise to the above-mentioned carrier, and dry at 120℃ for 24h. The dried sample is heated to 500 at 1℃ / min in Ar atmosphere It is calcined a...

Embodiment 3

[0035] Weigh 16.6g of aluminum oxide, place it in a muffle furnace, and dehydrate at 500°C for 7 hours, with a heating rate of 2.5°C / min, to obtain the pretreated carrier.

[0036] Weigh 0.184g ammonium molybdate dissolved in deionized water to form a 0.3mol / L aqueous solution and add it to the pretreated carrier, let it stand for 12 hours and then dry it in a water bath at 80°C, and place the dried sample in an oven at 120°C for 20 hours . The obtained sample was carbonized at 700℃ for 9h in an ethylene atmosphere, and the ethylene space velocity was 6000h -1 , The pressure is 0.5MPa, when the temperature drops to room temperature, 1% O 2 / Ar mixture is passivated for 8 hours to obtain a carrier loaded with carbide. Weigh 11.55g of nickel nitrate and dissolve it in deionized water, configure it into a certain volume of aqueous solution and then immerse it on the above-mentioned carrier, and then dry it at 120°C overnight. The dried sample is heated to 500°C at 1°C / min in Ar atmo...

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PUM

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Abstract

The invention relates to a catalyst for preparing isopropanol by hydrogenating acetone. The catalyst comprises the following ingredients by weight percent: 10 to 30 percent of metal oxide, 0.5 to 2 percent of metal carbonate, and 68 to 89.5 percent of carrier. The catalyst has advantages of simple production method, low price, high activity and selectivity and simplicity in operation.

Description

Technical field [0001] The invention relates to a catalyst for preparing isopropanol by hydrogenation of acetone, and a preparation method and application thereof. Background technique [0002] Industrially, isopropanol can be produced by fermentation and propylene hydration. Considering the economics of the process, the main process currently used is propylene hydration, that is, the reaction of propylene and sulfuric acid to obtain isopropyl sulfate, which is hydrolyzed To isopropanol or propylene and water are heated and pressurized in the presence of a catalyst to perform hydration reaction to produce isopropanol, but the single-pass conversion of propylene in this process is low, and there is a certain pollution to the environment. In recent years, with the rapid growth of demand for isopropanol in coatings, inks and other fields, there has been a significant shortage of propylene, the raw material for this process. [0003] Acetone is mainly obtained through the cumene perox...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/22B01J29/03B01J29/48C07C29/145C07C31/10
Inventor 李德宝鲁怀乾肖勇孙波林彩虹贾丽涛侯博陈从标林明桂秦泗彬
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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