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,

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

Example Embodiment

[0027] Example 1

[0028] Weigh the industrial grade Ni(NO 3 ) 2 ·6H 2 198 grams of O, dissolved in 0.5 liters of water to prepare a solution; added to the industrial-grade sodium carbonate solution, during which 25 grams of diatomaceous earth, 90ml of water glass (Na 2 SiO 3 , SiO 2 The content is 250g / l) and 7g of bauxite mixed and beaten into the reaction solution. Stir fully to mix the materials evenly until the reaction is complete and the nickel is fully precipitated. The pH value is 7.0; filtered; dried; at a temperature of 600°C Roasting; adding an extrusion aid, kneading, extruding into a shape (or chipping, balling, and pressing into Raschig rings) to prepare catalyst A-1. The strength data of the samples prepared by different molding methods of the catalyst A-1 are listed in Table-1. The content of each component in the catalyst A-1, the main process parameters during the preparation process and the pore structure data are shown in Table-2.

[0029] Catalysts A-2, A-3, ...

Example Embodiment

[0032] Example 2

[0033] Weigh Ni(NO 3 ) 2 ·6H 2 O198 grams and industrial grade Mg(NO 3 ) 2 ·6H 2 130 grams of O, dissolved in 0.5 liters of water to prepare a solution; added to the industrial first-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, the PH value is 7.5; filtration; drying; roasting at a temperature of 560°C; adding an extrusion aid, kneading, and extruding to form a catalyst B-1. The content of each component in the catalyst B-1, the main process parameters in the preparation process, the pore structure data and the strength data are shown in Table-3.

[0034]The addition of each component in the above preparation process and the main process conditions parameters were changed to prepare catalysts B-2, B-3, B-4, and B-5 respectively, the content o...

Example Embodiment

[0036] Example 3

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

[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 volume is 45ml, the reducing medium is hydrogen, the reduction temperature is 400°C-750°C, and the reduction pressure is 0.5MPa. Operating fluid space velocity is 5.0h -1 , H 2 / Liquid (mol / mol)=8:1, operating pressure is 2.6MPa, temperature is 100°C, 110°C, 120°C, each condition runs for 4 hours.

[0039] The composition data of the raw materials used in the reaction are shown in Table-4. (The following content is weight%)

[0040] Composition name

[0041] Using the raw materials in Table 4, under the action of the catalysts A-1, A-2, A-3, A-4, A-5, and A-6 of Example 1, the liquid was carried out on the reaction...

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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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