Method for preparing highly nitrogen-doped mesoporous carbon composites

A composite material, high-level technology, applied in the direction of hydrocarbons, hydrocarbons, carbon compound catalysts, etc., can solve problems such as difficult material processing in scale-up procedures

Active Publication Date: 2021-05-14
UNIVERSITY OF STRASBOURG +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Despite their remarkable catalytic properties, these materials have various limitations: from high-temperature sensitivity (which makes them only well suited for low- or mesophilic catalytic processes) to severe synthetic limitations (i.e., intractable scale-up procedures and difficult material handling)

Method used

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  • Method for preparing highly nitrogen-doped mesoporous carbon composites
  • Method for preparing highly nitrogen-doped mesoporous carbon composites
  • Method for preparing highly nitrogen-doped mesoporous carbon composites

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0128]Example 1. General procedure for active phase for high N-en-enrichment.

[0129]In a typical procedure, 2 g of dextrose and 3 g citric acid were added to deionized water (10 mL) at room temperature (R. T.). Then, a fixed amount of ammonium carbonate (i.e., 1, 2 or 3 g) was added to the mixture solution at room temperature and observed due to CO2Instantaneous Effervescence released (INSTANTANEOUS Effervescence). The suspension was stirred at room temperature until a clear solution was obtained as a source mixture for obtaining an N-doped carbonaceous material deposited on a suitable vector (after soaking / impregnation) of the carrier. As for the latter, use 2G different carriers, that is, SiC extrudate (30m2 G-1; SICAT), SiC powder (25m2 G-1; SiCAT, SIC foam (30m2 G-1SiCAT, and α-al2O3Bead (6m2 G-1Sasol). Slowly heat wet solid in the air: from room temperature to 130 ° C (10 ° C min-1The heating rate is maintained at this temperature for 1 hour. The obtained dry solids were furth...

Embodiment 2

[0130]Example 2. Material Characterization.

[0131]Use the Bruker Avance DRX-400 spectrometer (400.13 and 100.61 MHz, used for1H and13C) get 1D for all samples (1H and13C {1NMR spectrum. Take PPM in units, relative to trimethylsilane (TMS), reference residual solvent resonance (1H and13C) The chemical displacement is reported to report chemical displacement (δ).

[0132]Use the setaram instrument, use 25ml · min-1Air flow rate and 10 ° C from room temperature to 1000 ° C · min-1The heating rate is used for thermal weight analysis (TGA). In the liquid nitrogen temperature, use N2As the adsorbent (Tristar Sorptometer), the specific surface area of ​​different samples is measured. Before the measurement, the sample was degassed at 200 ° C overnight to desorb moisture and impurities on the surface thereof. The xps measurement of the carrier was used for 10 minutes of acquisition using a MultiLAB 2000 (Hν = 1486.6EV) spectrometer. Peak Deconvolution is performed with the "Avantage" program fr...

Embodiment 3

[0133]Example 3. Catalytic reaction

[0134]3.1 Oxygen Reduction Reaction (OR).

[0135]In the three-electrode battery, in the electrolyte in 0.1M KOH, the scanning rate is 10 mV s.-1AUTOLAB PGSTAT 30 (ECO Chemie, Netherlands) constituentator of the simulated linear scan generator, electrochemical studies at 25 ° C. The oxide (Hg / HGO) electrode and the PT wire electrode are used as the reference electrode and the counter electrode, respectively. Unless otherwise stated, all potentials are referred to as an invelectible hydrogen electrode (RHE). Electrochemical impedance spectroscopy (EIS) is used to determine the electrolyte solution resistance.

[0136]Ultrasonic waves were mixed with 10.0 mg of catalyst samples, 5 ml isopropanol, and 50 μl of Nafion solution (5 wt%) to form a homogeneous catalyst ink. For defined RRDE test, by loading 50 μl of catalyst ink to a pretreatment glass carbon (GC) electrode (5.5 mm diameter and 0.2376cm2Geometric area), then dry at room temperature to prepare ...

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Abstract

The present invention relates to new methods aimed at preparing highly N-doped mesoporous carbon macrocomposites and their use as highly efficient heterogeneous metal-free catalysts in many industrially relevant catalytic conversions.

Description

[0001]priority[0002]The present application claims priority to European Patent Application EP 15152038.4 and Temporary European Patent Application No. EP 15152039.2, filed on Jan. 21, 2015, which is incorporated herein by reference.Technical field[0003]The present invention relates to a new method, which is designed to prepare highly nitrogen-doped Mesoporous Carbon Macroscopic Composite, and they use in many industrial-related catalytic transformations as efficient multiphase without metal. Use of Highly EffectieneSt) of the Cataly-free Catalyst.[0004]In this document, the number between the slope and the brackets () refers to the reference list of the references given at the end of this document.Background technique[0005]Rethinking the substantially metal-based catalytic process, is a challenging thing that is modern and truly sustainable catalysis is renewing from the inspirated non-metallic catalytic structure of the structural unit designed and manufactured by the inexpensive a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/24B01J32/00
CPCB01J27/24B01J21/04B01J21/18B01J27/20B01J27/224B01J37/0203C01B17/0465H01M4/96Y02E60/50B01J20/20B01J35/0006B01J35/026B01J35/1061B01J37/0217B01J37/0221B01J37/0236B01J37/0244B01J37/04C07C5/333C07C2521/04C07C2527/224C07C2527/24
Inventor 刚帕友朱利亚诺·詹巴斯蒂亚尼刘岳峰乌斯塞努·巴阮定兰简-马里奥·赫特刚东越
Owner UNIVERSITY OF STRASBOURG
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