Modified mesoporous silica adsorbent and preparation method and application thereof
A mesoporous silica and adsorbent technology, applied in chemical instruments and methods, inorganic chemistry, silicon compounds, etc., to achieve the effects of simple preparation process, strong adsorption capacity, and fast adsorption rate
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0029] Example 1: A preparation method of modified mesoporous silica adsorbent
[0030] Dissolve 3.5g of 1,4,7,10-tetraazacyclododecane (Cyclen), 4g of potassium iodide, and 10g of potassium carbonate in 150mL of anhydrous tetrahydrofuran, and add 1.0g of chlorine-functionalized mesoporous Silica (precursor chlorine-based functionalized mesoporous silica (SBA-15-Cl), refer to relevant literature C.Yu, etal.AdvancedMaterials.14 (23) (2002) 1742), under continuous stirring After reflux reaction for 48 hours, after cooling to room temperature, the product was separated by suction filtration, washed alternately with ethanol and water for several times, and vacuum-dried at 75°C for 12 hours to obtain a modified mesoporous silica adsorbent.
[0031] figure 1 (a) is the transmission electron microscope photo of mesoporous silica (SBA-15-Cl) functionalized with precursor chlorine groups, and the ordered pore structure can be clearly observed, and the pore diameter is about 10nm, whic...
Embodiment 2
[0033] Embodiment 2: the modified mesoporous silica adsorbent obtained in embodiment 1 is to the recovery of palladium in nitric acid medium
[0034]Pipette 20 mL of a 50 mg / L palladium solution with a nitric acid acidity of 0.1 mol / L in a conical flask, add 0.02 g of the modified mesoporous silica adsorbent obtained in Example 1, and after ultrasonication for 5 min, the Shake at 200r / min for 24h in a constant temperature air bath. After centrifuging the adsorbent, the remaining clear liquid was taken out, and the mass concentration of palladium was measured by atomic absorption spectroscopy, and the adsorption rate E=89.1% of palladium was calculated by the adsorbent according to the adsorption equilibrium formula.
Embodiment 3
[0035] Embodiment 3: the modified mesoporous silica adsorbent obtained in embodiment 1 is to the recovery of palladium in nitric acid medium
[0036] Pipette 20 mL of a 50 mg / L palladium solution with a nitric acid acidity of 0.5 mol / L in an Erlenmeyer flask, add 0.02 g of the modified mesoporous silica adsorbent obtained in Example 1, and after ultrasonication for 5 min, at 25 ± 0.2 ° C Shake at 200r / min for 24h in a constant temperature air bath. After centrifuging the adsorbent, the remaining clear liquid was taken out, and the mass concentration of palladium was measured by atomic absorption spectrometry, and the adsorption rate E=80.6% of the adsorbent to palladium was calculated according to the adsorption equilibrium formula.
PUM
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