<abstract xmlns="http://www.w3.org/1999/xhtml"><p>Nanosized NaA zeolite was successfully synthesized by hydrothermal method using tetraethyl orthosilicate (TEOS) and aluminum isopropoxide (AIP) as the main raw materials. The surface modification of NaA zeolite was carried out by silane coupling agent 3-aminopropyltriethoxysilane (KH-550). The effects of silane coupling agent dosage, reaction temperature, reaction time, hydrolysis time and pH value on grafting rate of NaA zeolite were investigated in detail. The zeolites were characterized by XRD, SEM-EDS, FT-IR and TG-DTA. The results showed that the surface of NaA zeolite was modified successfully by KH-550. The optimal modification conditions obtained were as follows: the dosage of coupling agent in 95 % ethanol – 1.6 %, reaction temperature − 70 °C, reaction time – 2 h, hydrolysis time – 20 min, and pH value – 3.5. Under these conditions, the grafting rate of modified NaA zeolite was 3.95 %.</p></abstract>

Nanosized NaA zeolite was successfully synthesized by hydrothermal method using tetraethyl orthosilicate (TEOS) and aluminum isopropoxide (AIP) as the main raw materials. The surface modification of NaA zeolite was carried out by silane coupling agent 3-aminopropyltriethoxysilane (KH-550). The effects of silane coupling agent dosage, reaction temperature, reaction time, hydrolysis time and pH value on grafting rate of NaA zeolite were investigated in detail. The zeolites were characterized by XRD, SEM-EDS, FT-IR and TG-DTA. The results showed that the surface of NaA zeolite was modified successfully by KH-550. The optimal modification conditions obtained were as follows: the dosage of coupling agent in 95 % ethanol – 1.6 %, reaction temperature − 70 °C, reaction time – 2 h, hydrolysis time – 20 min, and pH value – 3.5. Under these conditions, the grafting rate of modified NaA zeolite was 3.95 %.

Preparation of nanosized NaA zeolite and its surface modification by KH-550

College of Chemistry and Chemical Engineering

Materials Science-Poland

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

{"article-title":"Preparation of nanosized NaA zeolite and its surface modification by KH-550"}

Nanosized NaA zeolite was successfully synthesized by hydrothermal method using tetraethyl orthosilicate (TEOS) and aluminum isopropoxide (AIP) as the main raw...

Preparation of nanosized NaA zeolite and its surface modification by KH-550

Published Online: Feb 01, 2019

Page range: 638 - 643

Received: Aug 11, 2017

Accepted: Jul 30, 2018

DOI: https://doi.org/10.2478/msp-2018-0083

Keywords
modified zeolite, silane coupling agent, grafting rate, characterization

© 2018 Jin Hou et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Preparation of nanosized NaA zeolite and its surface modification by KH-550

Published Online: Feb 01, 2019

Page range: 638 - 643

Received: Aug 11, 2017

Accepted: Jul 30, 2018

DOI: https://doi.org/10.2478/msp-2018-0083

Keywordsmodified zeolite, silane coupling agent, grafting rate, characterization

© 2018 Jin Hou et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Keywords
modified zeolite, silane coupling agent, grafting rate, characterization