Supported catalyst, preparation method and application thereof, and method for producing propylene from propane dehydrogenation
A supported catalyst and catalyst technology are applied in the preparation of supported catalysts and in the field of supported catalysts, which can solve the problems of uneven dispersion of active metal components and complex preparation processes, and achieve good catalyst stability, simple preparation processes and conditions. Easy-to-control effects
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment approach
[0032] The present invention has no special limitation on the conditions of the first mixing contact, for example, the conditions of the first mixing contact include: the temperature can be 10-60°C, preferably 25-60°C; the time can be 10-72 hours , preferably 10-30 hours; the pH value can be 1-7, preferably 3-6. In order to be more conducive to uniform mixing among the various substances, according to a preferred embodiment of the present invention, the first mixing and contacting is performed under stirring conditions.
[0033] The present invention has no special limitation on the conditions of crystallization, and the conditions of crystallization can be conventional choices in this field. For example, the conditions of crystallization can include: the temperature is 30-150°C, and the time is 10- 72 hours. Preferably, the crystallization conditions include: a temperature of 40-100° C. and a time of 20-40 hours. The crystallization is carried out by a hydrothermal crystall...
Embodiment 1
[0076] This example is used to illustrate the supported catalyst provided by the present invention and its preparation method and the method for propane dehydrogenation to propylene
[0077] (1) Preparation of carrier
[0078] 2.0 grams of P123 (substance with registration number 9003-11-6 in American Chemical Abstracts, whose average molecular weight Mn=5800) and 15 grams of N,N-dimethylformamide (DMF) were added to 11.2 grams of 37% by weight In a solution of hydrochloric acid and 64ml of water, stir at 40°C until P123 is completely dissolved; then add 4.45 g of tetraethyl orthosilicate to the above solution and stir at 40°C for 1 hour, after filtration, washing, and drying, a double-pore Filter cake A1 of structured mesoporous material;
[0079] After the water glass with a concentration of 15% by weight and the sulfuric acid solution with a concentration of 12% by weight are mixed uniformly at a weight ratio of 5:1 by water glass and sulfuric acid, the stirring reaction i...
Embodiment 2
[0095] This example is used to illustrate the supported catalyst provided by the present invention and its preparation method and the method for propane dehydrogenation to propylene
[0096] (1) Preparation of carrier
[0097] 2.0 grams of P123 (the substance whose registration number is 9003-11-6 in the American Chemical Abstracts, its average molecular weight Mn=5800) and 13.84 grams of N,N-dimethylformamide (DMF) were added to 16.5 grams of 37% by weight In a solution of hydrochloric acid and 73ml of water, stir at 25°C until P123 is completely dissolved; then add 6.75g (0.09mol) ethyl orthosilicate to the above solution and stir at 60°C for 1 hour, after filtering, washing and drying Obtain the filter cake A2 of the mesoporous material with double-pore structure;
[0098] Concentration is that the water glass of 15% by weight and the sulfuric acid solution of 12% by weight are mixed uniformly by water glass and sulfuric acid weight ratio after being 4:1, carry out stirrin...
PUM
| Property | Measurement | Unit |
|---|---|---|
| particle size | aaaaa | aaaaa |
| specific surface area | aaaaa | aaaaa |
| particle size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More