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Technology of hydrogenatioin to produce iso octanol using iso octaldehyde mixture and its catalyst

A catalyst and process technology, applied in the field of the process and the catalyst used, can solve the problem that the catalyst has no literature report, and achieve the effects of strong ability, improved purity and color, and high hydrogenation activity.

Inactive Publication Date: 2004-03-03
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The catalyzer that is used for the liquid-phase hydrogenation reaction of the mixture that comprises isooctenal, octenol (also includes other substances such as octenal in the mixture sometimes) also has no bibliographical information

Method used

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  • Technology of hydrogenatioin to produce iso octanol using iso octaldehyde mixture and its catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Weigh industrial grade Ni(NO 3 ) 2 ·6H 2 O198 grams, be dissolved in 0.5 liters of water, be mixed with solution; Join in the industrial grade sodium carbonate solution, wherein 25 grams of diatomite, 90ml water glass (Na 2 SiO 3 , SiO 2 Content is 250g / l) and 7 grams of bauxite, mixed and beaten into the reaction solution, fully stirred to mix the materials evenly, until the reaction is complete, the nickel is fully precipitated, and the pH value is 7.0; filtered; dried; at a temperature of 600 ° C Roasting; adding extrusion aids, kneading, extrusion molding (or tableting, balling, pressing into Raschig rings) to obtain catalyst A-1. The strength data of catalyst A-1 prepared by different molding methods are listed in Table-1. The content of each component in catalyst A-1, the main process parameters in the preparation process and the pore structure data are shown in Table-2.

[0029] Change the add-on of each component in the above-mentioned preparation process, ...

Embodiment 2

[0033] Weigh industrial grade Ni(NO 3 ) 2 ·6H 2 O198 grams and industrial grade Mg (NO 3 ) 2 ·6H 2 O130 grams, dissolved in 0.5 liters of water, prepared into a solution; added to industrial grade sodium carbonate solution, during which 27.5 grams of diatomaceous earth and 7 grams of bauxite were mixed and beaten into the reaction solution, fully stirred to make the materials evenly mixed , until the reaction is complete, the nickel is fully precipitated, and the pH value is 7.5; filtering; drying; roasting at a temperature of 560 ° C; adding extrusion aids, kneading, and extruding to obtain catalyst B-1. The content of each component in catalyst B-1, the main process parameters in the preparation process, pore structure data and strength data are shown in Table-3.

[0034]Change the addition amount of each component in the above preparation process and the main process condition parameters to prepare catalysts B-2, B-3, B-4, B-5 ​​respectively, the content of each compon...

Embodiment 3

[0037] The schematic diagram of the liquid phase hydrogenation reaction device for isooctyl aldehyde mixture is shown in the accompanying drawing.

[0038] The reaction tube is a tube with an inner diameter of Φ19mm, and a thermocouple tube of Φ3mm is inserted. The particle size of the catalyst is 10-20 mesh, the loading capacity is 45ml, the reducing medium is hydrogen, the reducing temperature is 400°C-750°C, and the reducing pressure is 0.5MPa. The operating liquid space velocity is 5.0h -1 , H 2 / liquid (mol / mol)=8:1, operating pressure 2.6 MPa, temperature 100°C, 110°C, 120°C, each condition was operated for 4 hours.

[0039] The compositional data of the raw materials used in the reaction are shown in Table-4. (The following contents are all by weight%)

[0040] Composition name

Content (weight%)

Isobutanol

0.05

Butanol

1.03

Isooctane

0.01

Isooctene

0.03

Isooctylaldehyde

0.1...

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Abstract

A process and catalyst for preparing isooctanol by liquid-phase hydrogenation of the mixture of isooctanal and octylene alcohol is disclosed. Said catalyst is prepared from metallic Ni, alkali-earth metal oxide and / or alumina, and Si-contained compound as carrier through code position of Ni and carrier, kneading, and calcining at 300-800 deg.C. Its advantages are good porous structure, and high strength, hydrogenating activity, and output rate of isooctanol.

Description

technical field [0001] The invention relates to a process for preparing isooctyl alcohol from a mixture of isooctaldehyde by hydrogenation and a catalyst used therein. Specifically, the invention relates to a process for liquid-forming a mixture of isooctaldehyde and octenol by using a novel catalyst. Process for producing isooctyl alcohol by phase hydrogenation and its catalyst. Background technique [0002] The production of iso-octanol (2-ethyl-1-hexanol, commonly known as octanol in industry) generally uses synthesis gas and propylene as raw materials, and is carbonylated under the action of rhodium-phosphine catalyst to generate mixed butyraldehyde. [0003] Main response: <chemistry num="001"> <chem file="02135438_cml001.xml" / > < / chemistry> (N-Butyraldehyde) [0004] Side reactions produce isobutyraldehyde and propane. [0005] N-butyraldehyde is condensed and dehydrated under the action of a catalyst to generate octenal (2-ethyl-2-ene-1-hexanal...

Claims

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Application Information

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IPC IPC(8): B01J23/755B01J23/78B01J37/03C07C29/14C07C31/02
Inventor 程玉春杨霞郝树仁尹长学王玲真李士芹江秀玲
Owner CHINA PETROLEUM & CHEM CORP
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