Catalyst for preparing 1,4-cyclohexane dimethanol from hydrogenation of 1,4-cyclo hexane diformic acid

A technology of cyclohexanedimethanol and cyclohexanedicarboxylic acid, which is applied in the field of catalysts

Inactive Publication Date: 2007-02-14
SINOPEC SHANGHAI PETROCHEMICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a catalyst for preparing 1,4-cyclohexanedimethanol by hydrogenation of 1,4-cyclohexanedicarboxylic acid, the technical problem to be solved is that the active components of the catalyst are not used Under the precursor of the rare metal Pt and Re, the catalyst is required to have higher product selectivity and reactivity, so that the reaction has a higher yield of 1,4-cyclohexanedimethanol, reducing the manufacturing cost of the catalyst, thereby overcoming Defects in the existing technology

Method used

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  • Catalyst for preparing 1,4-cyclohexane dimethanol from hydrogenation of 1,4-cyclo hexane diformic acid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] 4.53gRuCl 3 ·3H 2 O was dissolved in 24.5ml of deionized water, and then 3.91g of SnCl was added 2 2H 2 O dissolved, then add 35g carrier Al 2 o 3 Stir evenly to obtain a dark green paste, leave it to age for 15 hours, dry it at 70-100°C for 2 hours, take the particles with a particle size of 80-200 mesh as the catalyst precursor after grinding, and use hydrogen to reduce it by heating, and the flow rate of hydrogen is 150ml / min, the catalyst for the reaction was obtained.

Embodiment 2～10

[0017] Change the consumption of each starting material and carrier of each catalyst carrier, all the other are the same as embodiment 1. The composition and content of the catalyst active components prepared in each embodiment are shown in Table 1.

[0018] Ru / Sn

(The molar ratio of)

Ru+Sn content

(wt%)

Example 1

1 / 0.7

11.5

Example 2

1 / 1.0

8.0

Example 3

1 / 1.0

9.5

Example 4

1 / 1.0

9.5

Example 5

1 / 1.0

10.0

Example 6

1 / 1.0

10.0

Example 7

1 / 1.0

10.5

Example 8

1 / 1.0

10.5

Example 9

1 / 1.3

12.5

Example 10

1 / 1.5

15.0

[0019] The catalyst that above-mentioned each embodiment obtains carries out active evaluation with following condition:

[0020] 150 g of water as a solvent and 15 g of 1,4-cyclohexanedicarboxylic acid were placed in a 300 ml autoclave, and the requir...

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Abstract

The catalyst for hydrogenating 1, 4-cyclohexane diformic acid to prepare 1, 4-cyclohexane dimethanol consists of Al2O3 carrier and supported active components of metal Ru and Sn in the molar ratio of 1 to 0.5-2.0 and accounting for 5-20 wt%, and has grain size of 80-200 mesh. Compared with available technology, the catalyst of the present invention has the advantages of proper catalyst carrier, no use of noble metal Pt and Re, ideal activity and target product selectivity, low cost, etc.

Description

technical field [0001] The invention relates to a catalyst for hydrogenation of 1,4-cyclohexanedimethanol to 1,4-cyclohexanedimethanol, in particular to Al 2 o 3 It is a catalyst for hydrogenating 1,4-cyclohexanedimethanol from 1,4-cyclohexanedicarboxylic acid with metal Ru and metal Sn as its active components. Background technique [0002] 1,4-Cyclohexanedimethanol is an important organic chemical raw material for the production of polyester resin. The polyester resin produced by it instead of ethylene glycol or other polyols has good thermal stability and thermoplasticity, and can be used at higher temperatures It maintains stable physical and electrical properties under low conditions, and products made of this type of resin have good chemical resistance and environmental resistance. At present, the industrialized production of 1,4-cyclohexanedimethanol mainly uses dimethyl terephthalate as a raw material. The benzene ring is hydrogenated first to obtain dimethyl 1,4-c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/62C07C29/149C07C29/19
Inventor 朱志庆吕自红谢家明李斌
Owner SINOPEC SHANGHAI PETROCHEMICAL CO LTD
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