Supercharge Your Innovation With Domain-Expert AI Agents!

Preparation method for titanium aluminum composite oxide

A composite oxide and titanium-aluminum technology, applied in chemical instruments and methods, catalyst activation/preparation, chemical/physical processes, etc., can solve problems such as ammonia nitrogen pollution, and achieve high temperature stability, easy control, and large specific surface area Effect

Active Publication Date: 2013-08-28
CHINA PETROLEUM & CHEM CORP +1
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using a mixed solution of soluble titanium salt plus soluble aluminum salt and NaAlO 2 Prepared by solution co-current co-precipitation method, but this process needs to use ammonia water to adjust the pH value, and there is a problem of ammonia nitrogen pollution

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Prepare solid sodium aluminate to a concentration of 200gAl 2 o 3 / l concentrated sodium aluminate solution, then diluted to a concentration of 20L containing 35gAl 2 o 3 / L sodium aluminate working solution (a), take and dilute to a concentration of 50gTiO 2 / l titanium sulfate working solution 2L (b). Take a 30L steel plastic tank, open the container valves containing (a) and (b) respectively, and simultaneously ventilate and feed CO with a concentration of 35v%. 2 Gas, set the flow rate of (a) and (b) so that the reaction time is 1 hour, and quickly adjust the CO 2 The flow rate keeps the pH of the system at about 9.0, and the reaction temperature is 30°C. After (a) and (b) have reacted, add 4L (b) and 20wt% Na at the same time 2 CO 3 solution, by adjusting Na 2 CO 3 Solution flow, keep the pH value at 9.5, the reaction time is 0.5 hours, stop feeding CO 2 , and then the ventilation was stable for 45 minutes, and the slurry was filtered and washed with deion...

Embodiment 2

[0038] Prepare solid sodium aluminate to a concentration of 200gAl 2 o 3 / l concentrated sodium aluminate solution, then diluted to a concentration of 10L containing 45gAl 2 o 3 / L sodium aluminate working solution (a), take and dilute to a concentration of 50gTiO 2 / l titanium sulfate working solution 0.4L (b). Take a 30L steel plastic tank, open the container valves containing (a) and (b) respectively, and simultaneously ventilate and feed CO with a concentration of 35v%. 2 Gas, set the flow rate of (a) and (b) so that the reaction time is 40 minutes, and quickly adjust the CO 2 The flow rate is to keep the pH of the system at about 9.5, and the reaction temperature is 25°C. After (a) and (b) have reacted, add 0.6L (b) and 10wt%Na 2 CO 3 The reaction mother liquor, by adjusting Na 2 CO 3 Solution flow, keep the pH value at 9.5, the reaction time is 0.5 hours, stop feeding CO 2 , and then the ventilation was stable for 35 minutes, and the slurry was filtered and wash...

Embodiment 3

[0040] Prepare solid sodium aluminate to a concentration of 200gAl 2 o 3 / l concentrated sodium aluminate solution, then diluted to a concentration of 40gAl 2 o 3 / L sodium aluminate working solution 20L (a), take and dilute to a concentration of 50gTiO 2 / l titanium sulfate working solution 2L (b). Take a 30L steel plastic tank, open the container valves containing (a) and (b) respectively, and simultaneously ventilate and feed CO with a concentration of 40v% 2 Gas, set the flow rate of (a) and (b) so that the reaction time is 50 minutes, and quickly adjust the CO 2 flow rate, the pH of the system is maintained at about 10, and the reaction temperature is 35°C. After (a) and (b) have reacted, 2L (b) and 10wt% Na 2 CO 3 The reaction mother liquor, by adjusting Na 2 CO 3 Solution flow, keep the pH value at 9.5, the reaction time is 0.5 hours, stop feeding CO 2 , and then the air was stabilized for 40 minutes, and the slurry was filtered and washed with 60°C deionized w...

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
specific surface areaaaaaaaaaaa
specific surface areaaaaaaaaaaa
specific surface areaaaaaaaaaaa
Login to View More

Abstract

The present invention discloses a preparation method for a titanium aluminum composite oxide. According to the method, partial titanium sulfate and sodium meta-aluminate co-currently flow; CO2 is introduced to carry out precipitation at a constant pH value; the remaining partial titanium sulfate, a NaHCO3 solution and / or a Na2CO3 solution co-currently flow to carry out precipitation, wherein the final resulting titanium aluminum composite oxide has characteristics of large pore volume, large specific surface area and good high temperature stability. The titanium aluminum composite oxide prepared by the method of the present invention can be applicable for the carrier component of catalysts for catalytic cracking, hydrocracking and hydrogenation treating, and particularly for the carrier component of catalysts for selective hydrogenation of diene. In addition, the titanium aluminum composite oxide of the present invention has high hydrogenation property.

Description

technical field [0001] The invention relates to a preparation method of a titanium-aluminum composite oxide, in particular to a method for preparing a high-temperature stable titanium-aluminum composite oxide by a carbon dioxide neutralization method, which is suitable for the selective hydrogenation of diolefins. Background technique [0002] Alumina has a certain pore structure and specific surface area, so it can be used as a catalyst carrier and adsorbent in oil refining and petrochemical industry. Alumina, as a catalyst carrier, requires itself to have a large specific surface and pore volume to ensure the dispersion of the active components of the catalyst. [0003] There are many ways to prepare activated alumina. According to the classification of raw materials, the commonly used methods mainly include the following: [0004] (1) Sodium metaaluminate-nitric acid method, [0005] (2) Aluminum chloride-hydroxide according to the method, [0006] (3) Sodium metaalumi...

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 Patents(China)
IPC IPC(8): B01J21/06B01J32/00B01J37/00
Inventor 孙晓艳樊宏飞王占宇
Owner CHINA PETROLEUM & CHEM CORP
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com