Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for preparing saponite crystals under hydrothermal conditions

A saponite and crystal technology, applied in the field of preparing saponite crystals under hydrothermal conditions, can solve the problems of poor safety and operability of artificial synthesis of saponite, high impurity content of layered clay catalyst, and low reserves of natural saponite , to achieve the effects of easy control of experimental conditions, better application performance, and convenient raw material acquisition

Active Publication Date: 2018-12-07
NORTHEASTERN UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The reserves of natural saponite in nature are very low, and there are many types of impurities, and its composition varies with different origins. The layered pillar clay catalyst has high impurity content, low crystallinity, complex isomorphic substitution, and difficult to adjust acidity. Limit the application and development of this type of material
[0004] The safety and operability of the artificial synthesis of saponite reported so far are poor, and the preparation process is difficult, or according to the theoretical structural formula of saponite, it is fed stoichiometrically, crystallized at a certain temperature for a certain period of time, and there is a problem of secondary pollution.

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for preparing saponite crystals under hydrothermal conditions
  • Method for preparing saponite crystals under hydrothermal conditions

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Prepare an acid solution with a pH of 5.5-6.5 at room temperature for later use; put the acid solution and the amphibole particles after removal of impurities into a high-temperature airtight container at the same time, and let it stand for 10 minutes at room temperature to ensure that the amphibole in different experimental groups The time for initial acidification was the same. Heat the airtight container containing the pretreated sample to 150°C for 5 to 10 days, so that the ions in the hornblende are fully dissolved and separated, and then precipitate on the surface of the hornblende to obtain saponite crystal nuclei; close after the holding time Heating system, let the airtight container cool down to 100°C, place it in a well-ventilated place and let it stand for 2 to 3 hours, let it cool down to room temperature naturally, this process can make the saponite crystal fully grow and exist stably. The precipitate was fully washed with deionized water and then dried at...

Embodiment 2

[0029] Prepare an acid solution with a pH of 5.5-6.5 at room temperature for later use; put the acid solution and the amphibole particles after removal of impurities into a high-temperature airtight container at the same time, and let it stand for 10 minutes at room temperature to ensure that the amphibole in different experimental groups The time for initial acidification was the same. Heat the airtight container containing the pretreated sample to 210°C, and keep the constant temperature for 5 to 10 days, so that the ions in the amphibole are fully dissolved and separated, and then precipitate on the surface of the amphibole to obtain saponite crystal nuclei; close after the holding time Heating system, let the airtight container cool down to 100°C, place it in a well-ventilated place and let it stand for 2 to 3 hours, let it cool down to room temperature naturally, this process can make the saponite crystal fully grow and exist stably. The precipitate was fully washed with ...

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 Login to View More

Abstract

The invention belongs to the technical field of preparation of clay mineral crystals, and particularly relates to a method for preparing saponite crystals under hydrothermal conditions. The technicalscheme of the invention is as follows: a method for preparing saponite crystals under hydrothermal conditions comprises the following steps: (1) preparation of a solution; (2) pulverization and impurity removal for a raw material; (3) pretreatment; (4) constant-temperature nucleation; (5) cooling crystallization; and (6) washing and drying. The method for preparing saponite crystals under hydrothermal conditions has the beneficial effects that a large amount of pure nano-scale saponite crystals are obtained by using widely existing hornblende as the raw material, thereby reducing the production cost of saponite. Reduction in the use of chemical reagents in conventional soapstone preparation avoids the occurrence of a potential problem of environmental pollution. Unique excellent performance of crystal materials can broaden the resource utilization of saponite minerals.

Description

technical field [0001] The invention belongs to the technical field of clay mineral crystal preparation, and in particular relates to a method for preparing saponite crystal under hydrothermal conditions. Background technique [0002] Soapstone is a kind of smectite clay mineral, which is a three-octahedral layered cationic clay mineral. Compared with dioctahedral montmorillonite, saponite has higher thermal stability and stronger acidity, and is a more ideal layered clay matrix material. Due to the unique structural characteristics of saponite, it has strong cation exchange and catalytic properties, and can be widely used in the fields of catalysis, adsorption and medicine. It can also prepare soapstone composite materials, which are also widely used in the fields of chemical industry and environmental treatment. [0003] The reserves of natural saponite in nature are very low, and there are many types of impurities, and its composition varies with different origins. The ...

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
IPC IPC(8): C01B33/40
CPCC01B33/40C01P2004/01C01P2006/80
Inventor 黄菲黎永丽张志彬赵福德刘开君闫莹灿安佰高
Owner NORTHEASTERN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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