Flame-retardant porous matrix supported noble metal catalyst as well as preparation method and application thereof
A technology of noble metal catalysts and porous substrates, applied in the direction of catalyst activation/preparation, metal/metal oxide/metal hydroxide catalysts, molecular sieve catalysts, etc., to achieve the effects of maintaining stability, good hydrothermal properties, and low cost
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0057] The present invention also provides a method for preparing a flame-retardant porous matrix-supported noble metal catalyst, which is characterized by comprising the following steps:
[0058](1) mixing and contacting at least one original matrix selected from attapulgite and kaolin, at least one inorganic material selected from inorganic porous solids, a peptizer, and water to make a plastic mixed contact body; wherein, relative to The total amount of the original matrix and the inorganic material, the content of the original matrix is 10-99.5 mass %, preferably 20-99 mass %, the inorganic material content is 0.5-90 mass %, preferably 1-80 mass %, More preferably 5-80 mass %, more preferably 8-70 mass %, still more preferably the remainder;
[0059] (2) optionally subjecting the plastic mixed contact body to molding to obtain a porous matrix blank;
[0060] (3) calcining the mixed contact body of step (1) or the porous substrate blank of step (2) to obtain a flame-reta...
Embodiment 1
[0119] Mix attapulgite, 13X molecular sieve, 65% mass concentration of nitric acid, methyl cellulose, and magnesium stearate in a kneader in a ratio of 10:3:0.02:0.2:0.001 by mass, and add an appropriate amount of water. Knead into a plastic mixed contact body, put the contact body into an extruder, and extrude it at a temperature of 30 ° C and a pressure of 5 MPa to make a square honeycomb body, and a square honeycomb body. The length and height of the four bottom sides are respectively 80 cm and 100 cm, and the honeycomb green body is calcined in the air at 500° C. for 12 hours to obtain the flame-retardant honeycomb matrix A. According to the Pt content of each cubic flame retardant honeycomb matrix is 380g / m 3 , the Ru content is 140g / m 3 The ratio of chloroplatinic acid solution and ruthenium chloride oxalic acid aqueous solution is configured, wherein the mass ratio of oxalic acid and chloroplatinic acid is 3:1, and the Ce content in each cubic flame retardant honeyco...
Embodiment 2
[0121] Mix attapulgite, kaolin, Y molecular sieve, 65% mass concentration of nitric acid, methylcellulose, and magnesium stearate in a kneader in a mass ratio of 8:2:2:0.02:0.2:0.03, Add an appropriate amount of water, knead it into a plastic mixed contact body, put the contact body into an extruder, and extrude it at a temperature of 25 ° C and a pressure of 5 MPa to make a blank with square honeycomb holes. The length and height of the four bottom sides of the green body are 80cm and 100cm respectively, and the honeycomb green body is in N 2 The flame retardant honeycomb matrix B was obtained by calcining at 500°C for 2 hours. The content of Pt per cubic honeycomb matrix is 480g / m 3 , the Pd content is 120g / m 3 The oxalic acid aqueous solution of chloroplatinic acid solution and palladium chloride is configured in the proportion of 3 , Mn content is 18kg / m 3 The aqueous solution of cerium nitrate and manganese nitrate is prepared in the proportion of cerium nitrate and...
PUM
| Property | Measurement | Unit |
|---|---|---|
| specific surface area | aaaaa | aaaaa |
| area | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More