Template-free synthesis of tannic acid-based porous polymer and derived carbon material thereof under mild condition
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technology of porous polymer and template-free method, which is applied in the preparation/purification of carbon, and can solve problems such as energy consumption, harshness, and complicated steps
Inactive Publication Date: 2018-10-26
LIAONING UNIVERSITY
View PDF5 Cites 4 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
Traditionally, commercial activated carbon is obtained by incomplete combustion of petrochemical raw materials at high temperatures (usually above 1200 °C), which is generally considered to be harsh and...
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
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0026] Example 1 A template-free method for preparing a tannic acid-based porous polymer precursor under mild conditions
[0027] (1) The synthesis process of tannic acid-based porous polymer is shown as follows:
[0030] 1) Add 0.83g of 4,4'-diaminobiphenyl, 2.1mL of concentrated hydrochloric acid and 300mL of deionized water into a round-bottomed flask, and use an ice bath to control the temperature between 0 and 5°C. After stirring for 15 minutes, add 90mL An aqueous solution containing 9.3 mmol of sodium nitrite and continued stirring to completely convert the amino group into a diazonium salt.
[0031] 2) Keep the ice bath state, after neutralizing with sodium carbonate solution, add 0.78g tannic acid and 90ml 0.1M sodium carbonate aqueous solution. After 12 hours, the resulting solid precipitate was separated by filtration, washed with deionized water, methanol, tetrahydr...
Embodiment 2
[0038] The preparation of embodiment 2 porous carbon materials
[0039] (1) The tannic acid-based polymers AT-1, AT-2 and AT-3 prepared in Example 1 are calcined in a tube furnace respectively, at a heating rate of 5°C / min to 900°C, and kept After 3 hours, the temperature was naturally lowered to obtain products—tannic acid-based porous carbon materials, which were named AT-1-900, AT-2-900 and AT-3-900, respectively.
[0040] (2) The surface area and pore size distribution were measured by nitrogen adsorption and desorption at 77.3 K using a Quantachrome ASIQ-C research-grade high-performance fully automatic gas adsorption analysis system. Before analysis, the samples were vacuumed (10 -5 bar) at 200° C. for 15 hours. And using the same degassing procedure, carbon dioxide adsorption-desorption isotherms were measured at 273K.
[0041] The result is as Figure 5 , Image 6 As shown, the N of tannic acid-based porous polymer and tannic acid-based porous carbon material at 7...
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
Login to view more
Abstract
The invention discloses a template-free synthesis method of tannic acid-based porous polymers and derived carbon materials thereof under mild conditions. The template-free synthesis method of the tannic acid-based porous polymers and the derived carbon materials thereof under the mild conditions includes the steps of: (1) adding a compound containing a bisamino functional group, concentrated hydrochloric acid and deionized water to a round bottom flask, using an ice bath to control the temperature between 0-5 DEG C, and adding a sodium nitrite aqueous solution after stirring evenly and continuing stirring to completely convert amino groups into diazonium salt; (2) maintaining the ice bath state, adding a tannic acid and sodium carbonate aqueous solution after neutralizing with a sodium carbonate solution, conducting filtering separation of generated solid precipitate after 12 hours, washing with deionized water, methanol, tetrahydrofuran, methanol and water in sequence, and then conducting freeze drying to obtain the tannic acid-based porous polymers; (3) calcining the tannic acid-based porous polymers in a tube furnace at the temperature of 900 DEG C for 3 hours, and then coolingdown naturally to obtain target products. The template-free synthesis method of the tannic acid-based porous polymers and the derived carbon materials thereof under the mild conditions has the advantages of being simple, needing mild conditions and no template, and producing the final products that have excellent carbon dioxide capture capability.
Description
technical field [0001] The invention belongs to the field of porous material preparation, and in particular relates to a template-free method for synthesizing a tannic acid-based porous polymer precursor and porous carbon material under mild conditions and an application thereof. Background technique [0002] Porous carbon materials have been widely used in gas capture, electrochemical energy storage, catalyst immobilization and other fields due to their superior performance and low cost. It is necessary to properly select a suitable carbon material for a specific application, and its performance mainly depends on the pore size, pore connectivity, specific surface area, and material morphology. Traditionally commercialized activated carbon is obtained by incomplete combustion of petrochemical raw materials at high temperatures (usually above 1200 °C), which is generally considered to be harsh and energy-intensive. However, some schemes for preparing porous carbon materials ...
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
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more 
Login to view more