Alumina shaped body and its preparation method and application as well as catalyst and its preparation method and hydrotreatment method
A technology of molded body and alumina, applied in the direction of physical/chemical process catalysts, catalyst carriers, chemical instruments and methods, etc., can solve the problems of secondary dust pollution, difficult transfer, high water content, etc., to reduce operating energy consumption and avoid Effects of dust pollution and process simplification
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0044] According to the first aspect of the present invention, the present invention provides a method for preparing an alumina molded body, the method comprising the following steps: (1) molding a phosphorus-containing alumina hydrate composition to obtain a molded body;
[0045] Optionally, (2) drying the molded product obtained in step (1) to obtain a dried molded product;
[0046] (3) In the presence of water vapor, calcining the molded product obtained in step (1) or the dried molded product obtained in step (2) in an oxygen-containing atmosphere.
[0047] In step (1), the phosphorus-containing hydrated alumina composition contains hydrated alumina, a compound having at least two proton acceptor sites, and a phosphorus-containing compound.
[0048] The alumina hydrate may be one or more selected from alumina trihydrate and alumina monohydrate. The hydrated alumina preferably contains alumina monohydrate, more preferably alumina monohydrate. Specific examples of the hydr...
Embodiment 1
[0176] The hydrated alumina wet gel used in this example is to add sodium phosphate to the hydrated alumina gel solution prepared by the acid method (sodium metaaluminate-aluminum sulfate method, obtained from Sinopec Changling Branch) during the aging process , the phosphorus-containing pseudo-boehmite wet filter cake (this wet filter cake is numbered as SLB-1) obtained after washing with a belt filter, after determination, the i value of this wet filter cake is 77.6%, expressed as P 2 o 5 The calculated phosphorus content is 3% by weight.
[0177] (1) Put 240g of wet filter cake numbered SLB-1 in a beaker, then add 6g of methyl cellulose (purchased from Zhejiang Haishen Chemical Co. The content of sugar is 80% by weight, purchased from Beijing Chemical Reagent Company, the same below), and after stirring with a mechanical stirrer for 10 minutes, the obtained mixture is the phosphorus-containing hydrated alumina composition of the present invention, and its property paramete...
Embodiment 2
[0183] (1) Mix 4kg of wet filter cake numbered SLB-1 with 400g of deionized water for beating for 1 minute, then send the resulting slurry into a plate and frame filter press, adjust the pressure of the plate and frame to 0.7MPa and maintain After 15 minutes, a wet filter cake (coded as LB-1) was obtained. It has been determined that the i value of the wet filter cake numbered LB-1 is 65%.
[0184] (2) Put 600g of wet filter cake numbered LB-1 in a beaker, add 9g of hydroxyethyl methylcellulose (purchased from Shanghai Huiguang Fine Chemical Co., Ltd., the same below) and 3g of Sesame powder (half milk The content of mannan is 85% by weight (purchased from Beijing Chemical Reagent Company). After stirring for 10 minutes with a mechanical stirrer, the phosphorus-containing hydrated alumina composition of the present invention is obtained, and its properties are listed in Table 1.
[0185] (3) Extrude the phosphorus-containing hydrated alumina composition prepared in step (2) o...
PUM
Property | Measurement | Unit |
---|---|---|
pore size | aaaaa | aaaaa |
pore size | aaaaa | aaaaa |
pore size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
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