Unlock instant, AI-driven research and patent intelligence for your innovation.

Supported transitional metal oxide catalyst and application thereof in oil peroxidation

A technology of transition metals and catalysts, applied in the application field of preparing leather fatliquoring agents, can solve problems such as pollution, and achieve the effects of increased conversion frequency, high stability and reproducibility, and low production and use costs

Inactive Publication Date: 2010-01-27
XIAMEN UNIV
View PDF1 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] One of the objects of the present invention is to provide a supported transition metal oxide catalyst; the second object is to apply the catalyst to the oil peroxidation reaction, which can effectively solve the problem caused by the loss of catalyst active components in the production process of leather fatliquor. pollution problem

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Supported transitional metal oxide catalyst and application thereof in oil peroxidation
  • Supported transitional metal oxide catalyst and application thereof in oil peroxidation
  • Supported transitional metal oxide catalyst and application thereof in oil peroxidation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Catalyst preparation:

[0025] Catalyst support γ-Al was prepared by incipient wetness method 2 o 3 (80 ~ 100 mesh) immersed in 5% cobalt nitrate solution, at 50 ° C, continue to stir to evaporate water, in the case of no obvious residual liquid on the surface of the carrier, put the loaded catalyst precursor into a 120 ° C Dry in an oven for 24 hours, and then calcined at 450°C for 10 hours in an air atmosphere. After calcination, sieve and remove catalyst powders that are too small to obtain Co 2 o 3 The finished product of supported transition metal catalyst whose converted content reaches 3% of carrier mass.

[0026] Preparation of leather fatliquor:

[0027] 1) Partial transesterification of oil

[0028] Mixed esters are prepared by using soybean oil with an iodine value of 120 (GB / T 5532-85) as a raw material, with an alcohol-to-oil ratio of 2:1 (molar ratio), under the catalytic promotion of 0.5wt.% sodium methoxide, and reacting at 65°C for 2 hours. have t...

Embodiment 2

[0034] Example 2: Changing the active metal oxide Co in catalyst preparation 2 o 3 The content of is 10%, and all the other are with embodiment 1.

[0035] The prepared catalyst was used to prepare the leather fatliquor. The preparation conditions and catalytic oxidation operation were the same as in Example 1. After 3 hours of oxidation reaction, the peroxide value of the product was determined to be 510 mmol / kg.

Embodiment 3

[0036] Embodiment 3: Change the carrier to SBA-15 molecular sieve in the preparation of the catalyst, and the rest are the same as in Embodiment 1.

[0037] The prepared catalyst was used to prepare the leather fatliquoring agent. The preparation conditions and catalytic oxidation operation were the same as in Example 1. After 5 hours of oxidation reaction, the peroxide value of the product was determined to be 327 mmol / kg.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
peroxide valueaaaaaaaaaa
peroxide valueaaaaaaaaaa
peroxide valueaaaaaaaaaa
Login to View More

Abstract

The invention relates to a supported transitional metal oxide catalyst and the application thereof in oil peroxidation, in particular to a catalyst and the application thereof. The invention provides the supported transitional metal oxide catalyst and the application thereof in the oil peroxidation. The catalyst contains metallic cobalt components and carriers, wherein, in percentage by weight, the cobalt content which is calculated in a Co2O3 way is 0.3-10 percent and the balance is the carriers. Oil with iodine value more than 100 is treated by transesterification to obtain mixed ester material, the obtained mixed ester material is put into a fixed bed oxidation reactor filled with the supported transitional metal oxide catalyst, dry air is introduced at 50-80 DEG C in the air speed of 35,000-120,000 / h as oxidant and reacted for 3-5 hours, and the reacted peroxidated mixed ester product is directly sulphited. The catalyst has higher stability and regeneration, the peroxidation process is simple, convenient and easy, and the peroxidation value of oil after peroxidation reaches up to 500mmol / kg.

Description

technical field [0001] The invention relates to a supported transition metal oxide catalyst and its application in oil peroxidation, especially in the preparation of leather fatliquor. Background technique [0002] The function of leather fatliquoring is to lubricate the leather fiber, prevent the leather fiber from hardening and splitting, and make the leather have good physical and mechanical properties and hygienic properties such as elasticity, toughness, extensibility and softness, so it is an important part of the leather production process. One of the indispensable and important processes in the leather industry, leather fatliquor is also the most used leather chemical material in the leather industry. At present, there are more than 140 types of fatliquor in China, and 40 to 50 kinds have been industrialized, among which the modified products of natural animal and vegetable oils account for about 80% of the total amount of fatliquor products. [0003] The production...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/75B01J37/02B01J37/08C11C3/00C14C9/02
Inventor 杨乐夫李永燕蔡钒张国玉林静蔡俊修方维平
Owner XIAMEN UNIV