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

Method for preparing mesoporous aluminum oxide

A mesoporous alumina and inorganic aluminum salt technology, applied in the direction of alumina/aluminum hydroxide, can solve the problems of complicated operation and high preparation cost, and achieve the effects of simple operation, short reaction time and reduced preparation cost

Active Publication Date: 2013-01-09
CHINA PETROLEUM & CHEM CORP +1
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that there are problems of high preparation cost and complicated operation in the prior art, and a new preparation method of mesoporous alumina is provided

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

[0011] According to the molar ratio of inorganic aluminum salt to P123 25:1, wherein the average molecular weight of P123 is 5800, weigh 7.5026 grams of aluminum nitrate nonahydrate, put the weighed raw materials into a beaker, add 50 milliliters of deionized water, and stir at 20 ° C Dissolve for 30 minutes; then slowly add 48 ml of P123 solution dropwise, mix the above solution for 30 minutes, then add 2.5% ammonia solution dropwise to adjust the solution pH=9, continue stirring for 1 hour, wash with water, and filter with suction.

[0012] After drying, take out the sample and put it in a blast drying oven, keep it warm for 6 hours at an oven temperature of 100°C, and take out the sample after drying. The dried sample was placed in a muffle furnace with temperature control, baked at 500°C for 4 hours, cooled and taken out to obtain the prepared alumina material. by N 2 It can be seen from the adsorption experiment and the pore size distribution curve that the specific surf...

Embodiment 2

[0014] According to the molar ratio of inorganic aluminum salt to P123 of 50:1, wherein the average molecular weight of P123 is 5800, weigh 7.5026 grams of aluminum nitrate nonahydrate, put the weighed raw materials into a beaker, add 50 milliliters of deionized water, and stir at 20 ° C Dissolve for 30 minutes; then slowly add 24 ml of P123 solution dropwise, mix the above solution for 30 minutes, then add 2.5% ammonia solution dropwise to adjust the pH of the solution to 9, continue stirring for 1 hour, wash with water, and filter with suction.

[0015] After drying, take out the sample and put it in a blast drying oven, keep it warm for 6 hours at an oven temperature of 100°C, and take out the sample after drying. The dried sample was placed in a muffle furnace with temperature control, baked at 500°C for 4 hours, cooled and taken out to obtain the prepared alumina material. by N 2 It can be seen from the adsorption experiment and the pore size distribution curve that the ...

Embodiment 3

[0017] According to the molar ratio of inorganic aluminum salt to P123 100:1, wherein the average molecular weight of P123 is 5800, weigh 7.5026 grams of aluminum nitrate nonahydrate, put the weighed raw materials into a beaker, add 50 ml of deionized water, and stir at 20 ° C Dissolve for 30 minutes; then slowly add 12 ml of P123 solution dropwise, mix the above solution for 30 minutes, then add 2.5% ammonia solution dropwise to adjust the solution pH=9, continue stirring for 1 hour, wash with water, and filter with suction.

[0018] After drying, take out the sample and put it in a blast drying oven, keep it warm for 6 hours at an oven temperature of 100°C, and take out the sample after drying. The dried sample was placed in a muffle furnace with temperature control, baked at 500°C for 4 hours, cooled and taken out to obtain the prepared alumina material. by N 2 It can be seen from the adsorption experiment and the pore size distribution curve that the specific surface area...

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
pore size distributionaaaaaaaaaa
specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention relates to a method for preparing mesoporous aluminum oxide, which mainly solves the problems that the preparation cost of the mesoporous aluminum oxide is high and the preparation operation is complicated in the prior art. The method adopts the following technical scheme for solving the problems: inorganic aluminum salt is taken as a raw material, P123 is taken as a template agent,inorganic ammonia or inorganic ammonium salt is taken as a precipitating agent, the reaction is conducted under the condition that the pH value is 1-14 and the reacting temperature is 1-100 DEG C so as to obtain the mesoporous aluminum oxide, wherein the mole ratio of the inorganic aluminum salt to the P124 is 1-200:1, and the precipitating agent using amount is calculated according to the mole ratio of the inorganic aluminum salt, and is 1-50:1 of the mole ratio of the inorganic aluminum salt. The method can be used for industrial preparation of the mesoporous aluminum oxide.

Description

technical field [0001] The invention relates to a method for preparing mesoporous alumina. Background technique [0002] Activated alumina is a porous solid material, which has the advantages of large specific surface area and pore volume, adjustable pore distribution, high mechanical strength after molding, good thermal stability, abundant sources, and low price. It is widely used in the field of catalysis. Catalyst carrier. Its structural parameters such as specific surface area, pore volume, and pore size distribution are closely related to the selectivity, activity, and lifetime of the catalyst. The improvement of these physical parameters can improve the dispersion of active components and effectively promote the mass transfer process in the reaction. The mesoporous alumina has a narrow pore size distribution and a large specific surface area, and the different potentials on the surface make it easier to load different metal ions. At the same time, mesoporous alumina ...

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): C01F7/02
Inventor 吴省吴文海樊志贵缪长喜陈庆龄杨为民
Owner CHINA PETROLEUM & CHEM CORP