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Preparation method and application of catalyst for synthesizing 2, 2, 4-trimethyl-1, 3-pentanediol diisobutyrate

A technology of pentanediol diisobutyrate and catalyst, which is applied in the direction of catalyst activation/preparation, carboxylic acid ester preparation, and organic compound preparation. Corrosive, not easy to fall off, high catalytic activity effect

Active Publication Date: 2020-10-30
RUNTAI CHEM TAIXING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, zeolite has a microporous structure, and its macromolecules cannot pass through, which limits the reaction rate.

Method used

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  • Preparation method and application of catalyst for synthesizing 2, 2, 4-trimethyl-1, 3-pentanediol diisobutyrate
  • Preparation method and application of catalyst for synthesizing 2, 2, 4-trimethyl-1, 3-pentanediol diisobutyrate

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1. Preparation of catalyst

[0032] (1) Weigh 0.50gCo(NO 3 ) 2 6H 2 O, 0.50gNi(NO 3 ) 2 6H 2 O, 0.41g Cu(NO 3 ) 2 3H 2 O is added in the aqueous solution and mixed, and the mixed metal salt quality 10% NaY molecular sieve (produced by Wenzhou Huahua Group) is added to it first, and the mass fraction 65% nitric acid solution is mixed with Co 2+ 、Cu 2+ 、Ni 2+ The adjustment is about 0.2mol / L, and the solution is vigorously stirred for 12h.

[0033] (2) The mixed solution obtained in step (1) was centrifuged, and samples were collected, washed with distilled water several times, and then dried at 50° C. for 12 hours to obtain M-Y zeolite molecular sieves.

[0034](3) Put the molecular sieve obtained in step (2) into a mixed solution of water glass silicon source, sodium aluminum metaaluminate source, and 8 mol / L sodium hydroxide, and fully mix them, and react at 120° C. for 6 hours to obtain a precursor; The molar ratio of silicon source, aluminum source, and s...

Embodiment 2

[0041] The metal nitrate in the step (1) in the embodiment 1 is changed into a kind of solution of cobalt nitrate, prepares catalyst, all the other steps are identical with embodiment 1.

Embodiment 3

[0043] The metal nitrate solution in step (1) among the embodiment 1 is changed into cobalt nitrate, nickel nitrate solution, all the other steps are identical with embodiment (1).

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Abstract

The invention belongs to the technical field of catalysts. The invention discloses a preparation method and application of a catalyst for synthesizing 2, 2, 4-trimethyl-1, 3-pentanediol diisobutyrate.According to the preparation method, a Y-type molecular sieve is used as a carrier and is subjected to metal modification, so that metal distribution is uniform, then the Y-type molecular sieve is mixed with a silicon source, an aluminum source and an alkaline solution, carbon black is used as an inert matrix, the modified Y-type molecular sieve supported metal catalyst is prepared through a space synthesis method, and the catalyst has a good structure and a good surface distribution state. When the catalyst is used in esterification reaction for synthesizing 2, 2, 4-trimethyl-1, 3-pentanediol diisobutyrate (TXIB), not only can the yield of TXIB be remarkably increased, but also the activity stability and the porous structure of the catalyst can be remarkably improved.

Description

technical field [0001] The invention belongs to the technical field of catalysts, and in particular relates to a modified Y-type sieve-supported metal catalyst for the preparation of 2,2,4-trimethyl-1,3-pentanediol diisobutyrate esterification reaction and Preparation. Background technique [0002] Acid catalysis has an important application in chemical reactions. Esterification reaction is a typical acid catalysis reaction, and catalyst is an important factor affecting the reaction. Concentrated sulfuric acid is usually used as a catalyst in the traditional process of esterification reaction, but there are many shortcomings, such as the discharge of acidic wastewater, causing environmental pollution, high acid consumption, and easy corrosion of equipment. Solid acid can be a good substitute for liquid acid. Using solid acid as a catalyst has high acid strength, easy separation of selective type, no equipment corrosion, and relatively friendly environment. However, solid a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/14B01J37/30B01J37/10C07D319/06C07C67/24C07C69/28B82Y30/00B82Y40/00
CPCB01J29/146B01J37/30B01J37/10C07D319/06C07C67/24B82Y30/00B82Y40/00B01J2229/18B01J35/394C07C69/28
Inventor 宋文国卢小松张世元
Owner RUNTAI CHEM TAIXING CO LTD