Nickel-based catalyst for preparing isopropanol by hydrogenation of acetone and its application

A catalyst and a technology for isopropanol, which are applied to the catalyst for preparing isopropanol and the field of preparation thereof, can solve problems such as unsatisfactory use of the catalyst, and achieve the effects of long service life, high conversion rate and low content of metal active components

Active Publication Date: 2011-12-28
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In order to solve the unsatisfactory problem of catalyst use in the existing acetone hydrogenation production isopropanol process, the inventor has carried out more detailed research on the basis of existing catalysts, and found that adding a small amount of metal Mo and Zn in the nickel-based catalyst can Significantly improve the yield of isopropanol produced by the acetone hydrogenation of the catalyst, carry out the test of simulated industrial production conditions and the catalyst comparison test, test results show that using the catalyst of the present invention, the yield of isopropanol can reach 99.4%

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Using the equal volume impregnation method, according to the water absorption rate of the alumina carrier (produced by Beijing Research Institute of Chemical Industry), the required amount of nickel nitrate, ammonium molybdate and zinc nitrate were dissolved in deionized water to make the volume and the water absorption of the alumina carrier In the same solution, the alumina carrier is impregnated in the solution, dried, calcined, and reduced. Catalyst A-1 containing 10% Ni, 1.0% Mo and 1.0% Zn was made, and the specific surface area and pore volume of the catalyst were measured, which were 174m 2 / g, the pore volume is 0.39m 3 / g.

[0026] Put catalyst A-1 into a fixed-bed reactor, feed acetone and hydrogen, at 150°C, normal pressure, acetone liquid hourly space velocity 0.5h -1 The catalytic hydrogenation performance of the catalyst was evaluated. The test results are shown in Table 1.

Embodiment 2

[0028] Put the catalyst A-1 described in Example 1 into a fixed bed reactor, feed acetone and hydrogen, at 140°C, 1.30MPa, acetone liquid hourly space velocity 0.5h -1 The catalytic hydrogenation performance of the catalyst was evaluated as follows, and the test results are shown in Table 1.

Embodiment 3

[0030] Prepare catalyst according to the catalyst preparation method of Example 1, the difference is that the catalyst made contains 12% Ni, 0.5% Mo and 0.5% Zn, is denoted as catalyst A-2, measures the specific surface area and pore volume of catalyst, is respectively 142m 2 / g, the pore volume is 0.32m 3 / g.

[0031] Put the catalyst A-2 into the fixed bed reactor, feed acetone and hydrogen, at 140°C, 1.30MPa, acetone liquid hourly space velocity 0.5h -1 The catalytic hydrogenation performance of the catalyst was evaluated. The test results are shown in Table 1.

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Abstract

The invention discloses a nickel-based catalyst for hydrogenating acetone to prepare isopropanol and an application thereof. In order to solve the unsatisfactory problem of catalyst use in the existing acetone hydrogenation to produce isopropanol process, the present invention adds a small amount of metal Mo and Zn to the nickel-based catalyst, which can significantly improve the yield of the acetone hydrogenation of the catalyst to produce isopropanol , Carried out the test of simulating industrial production conditions and catalyst comparative test, test result shows to use catalyst of the present invention, under certain temperature and pressure, the yield of isopropanol can reach 99.4%. Compared with the existing nickel-based catalyst, the content of the main active component nickel is reduced, thereby effectively reducing the production cost of the catalyst.

Description

technical field [0001] The invention relates to a catalyst for isopropanol and its preparation method and application. More specifically, the invention relates to a catalyst for preparing isopropanol using nickel as the main active component of the catalyst, its preparation method and application. Background technique [0002] The production of isopropanol can be obtained by hydration of propylene, such as the indirect esterification method using sulfuric acid and the direct hydration method using a solid acidic catalyst or a cation exchange resin catalyst. [0003] Most acetone in industry is obtained by peroxidation of cumene and co-produced with phenol. Due to the increase in the demand for phenol, a large amount of acetone is co-produced, and there is an imbalance between supply and demand, which often leads to an overproduction of acetone. This makes the hydrogenation of acetone to produce isopropanol an economically viable route for some periods. [0004] The hydroge...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/883C07C31/10C07C29/145
Inventor 唐国旗田保亮李宝芹张桂英戴伟
Owner CHINA PETROLEUM & CHEM CORP
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