Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Hydrogenation catalyst and preparation method thereof

A hydrogenation catalyst and catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem of high equipment cost, high labor intensity and complex process. And other issues

Inactive Publication Date: 2012-05-02
CHINA PETROLEUM & CHEM CORP +1
View PDF3 Cites 46 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of the prior art are poor adaptability to raw materials, low catalyst utilization rate, high equipment cost, complex process and high labor intensity

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
  • Hydrogenation catalyst and preparation method thereof
  • Hydrogenation catalyst and preparation method thereof
  • Hydrogenation catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0020] The preparation method of the hydrogenation catalyst provided by the present invention is characterized in that the method includes preparing a palladium-rare earth aqueous solution with a water-soluble palladium-containing compound, a water-soluble rare earth-containing compound and water, and impregnating the carrier with the palladium-rare earth aqueous solution to make the palladium-containing compound and The rare earth compound is supported on the carrier to obtain a catalyst precursor; after the catalyst precursor is dried and calcined, it is subjected to reduction treatment at 50-200°C under a hydrogen atmosphere to reduce the oxidized divalent palladium in the palladium compound to metallic palladium to obtain Catalyst products.

[0021] In the preparation method provided by the present invention, the water-soluble rare earth-containing compound is selected from La(NO 3 ) 3 ·6H 2 O, La(OAc) 3 ·5H 2 O, LaCl 3 ·7H 2 O, (III) Ce(NO 3 ) 3 ·6H 2 O, (IV) Ce(NO 3 ) 4 ·7H ...

Embodiment 1

[0027] This example illustrates 2%Pd-1%La 2 O 3 / Preparation process of activated carbon granular catalyst.

[0028] Treatment of activated carbon carrier: 104g of 4-10 mesh coconut shell granular activated carbon is put into a 500ml beaker, soaked in 300ml of water and stirred for 30min, washed and filtered. Soak in 200ml water and stir for 30min, wash and filter; repeat once. 200ml 0.5N nitric acid, slightly stir and soak for 60min, wash and filter. Wash the nitric acid with distilled water or deionized water to a pH of about 7.0, and dry at 100-110°C for 2-8 hours to obtain 100g of treated coconut shell granular activated carbon for use.

[0029] Prepare palladium-rare earth aqueous solution: weigh 5.1 grams of palladium nitrate Pd(NO 3 ) 2 ·2H 2 O (Fw = 266.5) and 2.74 grams of lanthanum nitrate La(NO 3 ) 3 ·6H 2 O (Fw=433) was dissolved in 120 g of water to obtain a palladium-rare earth aqueous solution.

[0030] Catalyst precursor: Pour the palladium-rare earth aqueous soluti...

Embodiment 2

[0033] This example illustrates 2%Pd-1%La 2 O 3 / Preparation process of activated carbon strip catalyst.

[0034] Treatment of activated carbon carrier: 103gΦ1.3mm, specific surface area greater than 1000m 2 / g coal strip activated carbon is put into a 500ml beaker, soaked in 300ml water and stirred for 30min, washed and filtered. Soak and stir in 200ml water for 30min, wash and filter; repeat once. 200ml 0.5N nitric acid, soak for 60min (slightly stirring), wash and filter. Wash the nitric acid with distilled water or deionized water to pH=7.0, and dry at 100-110°C for 2-8 hours to obtain 100g of treated strip-shaped granular activated carbon for use.

[0035] Prepare palladium-rare earth aqueous solution: weigh 5.1 grams of palladium nitrate Pd(NO 3 ) 2 ·2H 2 O (Fw = 266.5) and 2.74 grams of lanthanum nitrate La(NO 3 ) 3 ·6H 2 O (Fw=433) was dissolved in 120 g of water to obtain a palladium-rare earth aqueous solution.

[0036] Catalyst precursor: Pour the palladium-rare earth aq...

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
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a hydrogenation catalyst, characterized in that: active components are loaded on a carrier, the active components comprise 0.2-5 wt% of metallic palladium and 0.1-2.5 wt% of rare earth oxide. The catalyst is prepared by the following steps: preparing water-soluble palladium-containing compound, water-soluble rare earth compound and water into a palladium-rare earth aqueous solution, dipping a carrier in the palladium-rare earth aqueous solution to loading the palladium-containing compound and rare earth compound on the carrier to obtain a catalyst precursor; drying and roasting the catalyst precursor, then carrying out reduction processing at a temperature of 50-200 DEG C in the presence of hydrogen to reduce oxidative divalent palladium in the palladium compound to metallic palladium.

Description

Technical field [0001] The present invention relates to a hydrogenation catalyst, and more particularly to a supported hydrogenation catalyst containing palladium. Background technique [0002] Catalytic hydrogenation is one of the most basic and simpler organic catalytic reactions. It not only has a wide range of applications in industrial production and scientific experiments, but is also the most extensive and in-depth reaction studied in catalytic science. [0003] Because the characteristic of the catalytic hydrogenation reaction is that the active center on the catalyst can make the unsaturated compound adsorb and activate, especially the H 2 The strong σ bond in the molecule relaxes and breaks to form adsorbed H atoms, and then combines and desorbs each other. Therefore, the catalyst surface should have the ability to form adsorption bonds such as M-H. However, these adsorption bonds cannot be too strong, and they need to be quite active to ensure mutual action. Therefore, t...

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): B01J23/63C07D223/10C07D201/16
Inventor 程时标涂椿滟凌云张树忠谢丽闵恩泽
Owner CHINA PETROLEUM & CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com