| Title: |
Ultrasound contribution to cation substitution in LTA zeolite |
| Authors: |
Nzodom Djozing, William'S; Chave, Tony; Nikitenko, Sergey I.; Valange, Sabine |
| Contributors: |
Institut de Chimie Séparative de Marcoule (ICSM - UMR 5257); Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut des Sciences et technologies pour une Economie Circulaire des énergies bas carbone (ISEC); Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Montpellier (UM)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM); Université de Montpellier (UM); Sonochimie dans les Fluides Complexes (LSFC); Université de Montpellier (UM)-Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut des Sciences et technologies pour une Economie Circulaire des énergies bas carbone (ISEC); Institut de chimie des milieux et matériaux de Poitiers UMR 7285 (IC2MP Poitiers ); Université de Poitiers = University of Poitiers (UP)-Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS) |
| Source: |
18th ICC - The 18th International Congress on Catalysis; https://hal.science/hal-04768615; 18th ICC - The 18th International Congress on Catalysis, Jul 2024, Lyon, France.; https://www.icc-lyon2024.fr/ |
| Publisher Information: |
CCSD |
| Publication Year: |
2024 |
| Collection: |
Université de Poitiers: Publications de nos chercheurs.ses (HAL) |
| Subject Terms: |
[CHIM]Chemical Sciences |
| Subject Geographic: |
Lyon; France |
| Description: |
International audience ; The physical and chemical effects of power ultrasound derive from acoustic cavitation. Ultrasound-assisted synthesis and treatment under hydrothermal conditions using a sonohydrothermal (SHT) reactor has been developed in our group during the last decade.1 Recently, ultrasonic treatment has received much attention for the preparation of zeolites due to a significant acceleration of their growth/crystallization, which considerably reduces the overall synthesis time.2–4 Herein we propose the use of power ultrasound as an alternative to LTA zeolite synthesis and conventional reflux cation substitution methods. LTA synthesis was first carried out in hydrothermal conditions under ultrasound in a sonohydrothermal reactor at 20 kHz. The cation exchange of Na-LTA to the proton form (H-LTA) was then investigated for the first time under ultrasound in a glass reactor (US-GR) with a plunging sonotrode and in the SHT reactor. We have also studied the ultrasonic-assisted cation exchange of Na-LTA against another extra-framework cation (Ca2+) at 20 kHz in both US-GR and SHT reactors. The reflux cation substitution procedure was used as a benchmark method. Ca2+ exchanged LTA zeolite is indeed extensively used as an adsorbent in petroleum and gas purification applications. |
| Document Type: |
conference object; still image |
| Language: |
English |
| Availability: |
https://hal.science/hal-04768615; https://hal.science/hal-04768615v1/document; https://hal.science/hal-04768615v1/file/Poster%20Williams%20ICC%202024%20SN,%20TC,%20SV.pdf |
| Rights: |
info:eu-repo/semantics/OpenAccess |
| Accession Number: |
edsbas.A6B03DC0 |
| Database: |
BASE |