Preparation method of hierarchical porous material-loaded cobalt-based catalyst

A cobalt-based catalyst and multi-stage pore technology, which is applied in the direction of molecular sieve catalysts, chemical instruments and methods, and the preparation of liquid hydrocarbon mixtures, can solve the problems of non-interconnection, zeolite uniformity, loading, etc., to avoid diffusion limitations, high water Thermal stability, the effect of high thermal stability

Inactive Publication Date: 2015-04-29
华文蔚
3 Cites 8 Cited by

AI-Extracted Technical Summary

Problems solved by technology

[0008] Tang Yi et al. (CN 01126842.5) used diatomite as a carrier, formed a zeolite film on its surface through the nano-zeolite seed crystal layer-by-layer assembly method, and then grew it secondary under an organic amine atmosphere, thus forming a zeolite film on the diatomite. Zeolite material with a certain strength and multi-level pore structure, but the pores of zeolized diatomite are not interconnected, which will limit the diffusion
[0009] Hiroko Shikata et al. used the sol-gel method to load Silicalit-1 on a multi-level channel through-flow silica gel material (Journal of Sol-G...
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

Abstract

The invention discloses a preparation method of a hierarchical porous material-loaded cobalt-based catalyst. The method comprises the following steps: (1) evenly mixing a silicon source, an aluminum source, ethanol, NH3 and H2O at the ratio of 1 to (20-30) to (25-35) to (0.1-0.4) to (1-3), and adding a template agent at the mass ratio of the template agent to the aluminum source being (0.5-1) to 1; (2) putting the mixed liquid obtained from the step (1) into a crystallization kettle lined with polytetrafluoroethylene, filtering, washing, drying and removing the template agent through three-section temperature control roasting; (3) carrying out acid treatment on a carrier precursor to obtain a hierarchical porous carrier; and (4) dipping a saline solution dissolved with cobalt or a saline solution of cobalt and non-noble metal into the hierarchical porous material by adopting an equivalent-volume impregnation method for 10-48 hours, drying at 100-130 DEG C, and roasting at 300-600 DEG C for 4-10 hours, tabletting, and screening to prepare the hierarchical porous material-loaded cobalt-based catalyst.

Application Domain

Molecular sieve catalystsLiquid hydrocarbon mixture production

Technology Topic

ChemistryAcid treatment +9

Examples

  • Experimental program(2)

Example Embodiment

[0022] Example 1
[0023] (1) According to the silicon source: aluminum source: ethanol: NH3: H2O = 1:20:25:0.1:1; the silicon source uses porous solid silica gel particles, and the aluminum source uses sodium aluminate. The above raw materials are mixed uniformly, and then the template is added The mass ratio of the added amount of the template agent to the aluminum source is 1:1; the template agent is porous carbon or porous polystyrene microspheres;
[0024] (2). The mixed solution obtained in step (1) is put into a crystallization kettle lined with polytetrafluoroethylene, crystallized at 120°C for 24 hours and at 200°C for 60 hours; filtered, washed, Dry, remove the template by three-stage temperature-controlled roasting, decompose the template at a low temperature of 200°C for 6.0 hours, decompose the template at a medium temperature of 250°C for 4.0 hours, and remove free carbon at a high temperature of 650°C for 20.0 hours; obtain a catalyst carrier precursor;
[0025] (3) Treat the carrier precursor acid with 1 mol/L sulfuric acid, a treatment temperature of 180°C, a treatment time of 1.01 hour, and a pressure of 0.5 MPa to obtain a multi-stage porous carrier;
[0026] (4) Using the equal volume dipping method, immerse the dissolved cobalt nitrate solution into the multi-stage porous material for 48 hours, then dry at 130°C, roast at 600°C for 10 hours, press tablets, and sieving. Class-pored zeolite particles support cobalt-based catalysts.

Example Embodiment

[0027] Example 2
[0028] (1) According to silicon source: aluminum source: ethanol: NH3: H2O = 1:30:35:0.4:3; silicon source uses porous solid silica gel particles, aluminum source uses sodium aluminate, the above raw materials are mixed uniformly, and then the template is added The mass ratio of the added amount of the template agent to the aluminum source is 0.5:1; the template agent is porous carbon or porous polystyrene microspheres;
[0029] (2). The mixed liquid obtained in step (1) is put into a crystallization kettle lined with polytetrafluoroethylene, crystallized at 80°C for 24 hours and at 130°C for 48 hours; filtered, washed, Dry, remove the template by three-stage temperature-controlled roasting, decompose the template at a low temperature of 200°C for 6.0 hours, decompose the template at a medium temperature of 350°C for 4.0 hours, and remove free carbon at a high temperature of 550°C for 20.0 hours; obtain a catalyst carrier precursor;
[0030] (3) Treat the carrier precursor acid with 0.1 mol/L hydrochloric acid, a treatment temperature of 20°C, a treatment time of 1.00 hours, and a pressure of 0.1 MPa to obtain a multi-stage porous carrier;
[0031] (4) Using the equal volume impregnation method, immerse the cobalt-dissolved salt solution or the salt solution of cobalt, precious metals and non-precious metals into the multi-stage porous support for 48 hours, then dry at 130°C and roast at 600°C After 40 hours, tableting and sieving to prepare multi-class pore zeolite particles supporting cobalt-based catalyst.
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

no PUM

Description & Claims & Application Information

We can also present the details of the Description, Claims and Application information to help users get a comprehensive understanding of the technical details of the patent, such as background art, summary of invention, brief description of drawings, description of embodiments, and other original content. On the other hand, users can also determine the specific scope of protection of the technology through the list of claims; as well as understand the changes in the life cycle of the technology with the presentation of the patent timeline. Login to view more.
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

Similar technology patents

Coating Process of Zero-PGM Catalysts and Methods Thereof

InactiveUS20140274678A1Good chemical stabilityImprove thermal stabilityInternal combustion piston enginesHeterogenous catalyst chemical elementsOxideChemical measurement
Owner:CLEAN DIESEL TECHNOLOGIES

Flame retarded fibers and filaments and process of production therefor

InactiveUS20050159552A1Low viscosityImprove thermal stabilityFlame-proof filament manufactureMonocomponent polypropylene artificial filamentBrominePolymer chemistry
Owner:ALBEMARLE CORP

Organic silicon modified polyurethane sealing agent

InactiveCN107151307AImprove thermal stabilityHigh strengthPolyureas/polyurethane adhesivesChemistryOrganosilicon
Owner:SUZHOU JINQIANG NEW MATERIALS

Acetylacetone based composite heat stabilizer

InactiveCN101508636AImprove thermal stabilityPreparation of aldehyde/ketone chelatesAcetylacetoneMagnesium
Owner:BEIJING UNIV OF CHEM TECH

Diaphragm, preparation method thereof, and lithium ion battery using diaphragm

ActiveCN109148789AImprove thermal stabilityAvoid thermal runawayCell seperators/membranes/diaphragms/spacersSecondary cellsThermal runawayAdhesive
Owner:CONTEMPORARY AMPEREX TECH CO

Classification and recommendation of technical efficacy words

  • Improve thermal stability
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2023 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap