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

Ordered double porosity Al203-TiO2 and preparation method thereof and application thereof

An al2o3-tio2, double-porous technology, applied in chemical instruments and methods, treatment of hydrocarbon oil, metal/metal oxide/metal hydroxide catalysts, etc. It is difficult to control the pore size of macropores and mesopores, so as to achieve the effects of easy large-scale industrial production, mitigation of diffusion effects, and good thermal stability.

Inactive Publication Date: 2010-08-04
EAST CHINA UNIV OF SCI & TECH
View PDF3 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although the above method can be used to obtain Al 2 o 3 -TiO 2 Composite oxides, but unless additional surfactants or templates are added, it is difficult to obtain an ordered macropore to mesopore structure, and the pore size of macropores and mesopores is also difficult to control

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
  • Ordered double porosity Al203-TiO2 and preparation method thereof and application thereof
  • Ordered double porosity Al203-TiO2 and preparation method thereof and application thereof
  • Ordered double porosity Al203-TiO2 and preparation method thereof and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The sulfuric acid solution was added to deionized water to prepare 50 ml of an acid solution with a pH of 1. Take 2 grams of a mixture of aluminum sec-butoxide and n-butyl titanate (after ultrasonic pretreatment, the molar ratio of aluminum source and titanium source is 9:1) and add it to the above acid solution, stir and hydrolyze it at room temperature for 3 hours, stir The speed is 500 rpm. The precipitate was washed, centrifuged, dried at 40°C for 12 hours, and then calcined at 200°C for 3 hours to obtain the product.

[0042] figure 1 The scanning electron microscope photo of the uncalcined particle morphology is given. All the macropores are parallel to each other and distributed in an orderly manner, while the walls of the macropores are formed by the aggregation of fine particles. The gaps between these particles and the gaps inside the particles constitute the mesoporous channel. figure 2 It is Al calcined at 200°C 2 o 3 -TiO 2 The scanning electron micr...

Embodiment 2

[0044] Mix 35 milliliters of ethanol and 15 milliliters of deionized water to prepare an alcoholic aqueous solution, then add sodium hydroxide solution to the alcoholic aqueous solution to prepare 50 ml of an alkali solution with a pH of about 10. Take 4 grams of a mixture of aluminum isopropoxide and n-propyl titanate (after stirring pretreatment, the molar ratio of aluminum source and titanium source is 7:3) and add it to the above alkaline solution, stir and hydrolyze it at 5°C for 5 hours, The stirring rate was 200 rpm. The precipitate was washed, centrifuged, dried at 20°C for 24 hours, and then calcined at 400°C for 4 hours to obtain the product.

[0045] image 3 Provide the scanning electron micrograph of the particle morphology without roasting treatment, its morphology and the prepared particle morphology of embodiment 1 ( figure 1 )very similar. Figure 4 It is Al calcined at 400°C 2 o 3 -TiO 2 The scanning electron micrograph of the composite oxide particles ...

Embodiment 3

[0047] Mix 10ml of n-butanol and 40ml of deionized water to prepare an alcoholic aqueous solution, then add a certain amount of ammonia solution to the alcoholic aqueous solution to prepare 50ml of an alkaline solution with a pH of about 13, and add 5 grams of Brij56 to the above in solution. After Brij56 is dissolved, add 4 g of a mixture of aluminum isopropoxide and ethyl titanate (after ultrasonic pretreatment, the molar ratio of aluminum source to titanium source is 1:1), stir and hydrolyze at 70°C for 0.5 hours , with a stirring rate of 600 rpm. The precipitate was washed, centrifuged, Soxhlet extracted, dried at 70°C for 8 hours, and roasted at 650°C for 5 hours to obtain the product.

[0048] Figure 5 Provide the scanning electron micrograph of the particle shape that is not processed by roasting, its shape and embodiment 1 ( figure 1 ) and Example 2 ( image 3 ) had similar morphology to the prepared particles. Figure 6 It is Al calcined at 650℃ 2 o 3 -TiO 2 ...

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
Average pore sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses an ordered double porosity Al203-TiO2 and a preparation method thereof and application thereof; the preparation method comprises the following steps: adding the mixture of an aluminum source and a titanium source into solution A, hydrolyzing, collecting the sedimentation, and roasting at the 200-1000 DEG C temperature for 3-5 hours after drying, thus obtaining the product. The aluminum source is selected from aluminum iso-propoxide or aluminum tri-sec-butoxide; the titanium source is selected from the titaniumethoxide, metatitanic acid isopropyl ester or metatitanic acid N-Butyl acetate; and the solution A is the aqueous solution containing acidic material, the solution of the mixture of the water containing the acidic material cosolvent, the aqueous solution containing the alkaline matterial or the solution of the mixture of the water containing the alkaline material and the cosolvent. The ordered double porosity Al203-TiO2 composite oxides prepared by the method can be used as a catalyst carrier. The ordered double porosity Al203-TiO2 is provided with an ordered macropore-middle pore structure, can meet the structural requirement put forward by different reaction pair catalysts, has simple preparation technology and is apt to the large-scale industrialization production.

Description

technical field [0001] The present invention relates to an Al 2 o 3 -TiO 2 Composite oxide, its preparation method, and its application in pyrolysis gasoline hydrogenation. Background technique [0002] al 2 o 3 It is a traditional carrier with the characteristics of high specific surface area, high melting point, high selectivity and anti-poisoning ability. It is one of the most widely used catalyst carriers, especially in the fields of petrochemical and environmental protection. . But Al 2 o 3 The impact on the active components is relatively small, and it is difficult to further improve the catalytic activity. [0003] TiO 2 It can also be used as a carrier for many catalysts, and it has many unique advantages when used as a hydrodesulfurization catalyst carrier, such as TiO loaded with cobalt and molybdenum 2 The catalyst has high catalytic activity and does not require pre-sulfurization. When the sulfur content in the raw material is low, it does not require a...

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
IPC IPC(8): B01J32/00B01J21/06B01J35/10B01J23/44B01J23/883C10G49/06C10G49/04
Inventor 周志明曾天鹰范琦华程振民
Owner EAST CHINA UNIV OF SCI & TECH
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