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7653

MODIFICATION OF SILICA GEL SURFACE BY POLYACRYLAMIDE THROUGH THE REDOX INITIATION OF CERIC AMMONIUM NITRATE - SODIUM SULFITE SYSTEM

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Last updated: 03 Jan 2025

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Tags

Chemistry

Abstract

In-situ polymerization of acrylamide(AAM) and modification of silica gel surface were extensively studied. The entire different factors affecting the process were optimized aiming at obtaining a product in a maximum yield and high nitrogen content. The obtained results indicated that sodium sulfite is the key issue of the initiation and completeness of both polymerization and modification. Moreover, silica gel itself exerted also an important role in the entire process. The optimum conditions for in-situ modification of 5g silica gel via polymerization of an aqueous acrylamide (5g/50ml) were: 1mM of ceric ammonium nitrate, 120 minutes, 70oC and 0.15g of Na2SO3 as an activator. The synthesized modified samples and silica gel were characterized by elemental analysis (only for the modified samples) FT-IR, XRD, SEM , and differential thermal analysis(DTA ).

DOI

10.21608/absb.2009.7653

Keywords

Silica gel, OLYACRYLAMIDE

Volume

20

Article Issue

Issue 2-A

Related Issue

1473

Issue Date

2009-12-01

Receive Date

2009-07-14

Publish Date

2009-12-06

Page Start

59

Page End

74

Print ISSN

1110-2535

Online ISSN

2636-3305

Article File

ABSB_Volume 20_Issue Issue 2-A_Pages 59-74.pdf

PDF . 462.0kB

Link

https://absb.journals.ekb.eg/article_7653.html

Detail API

https://absb.journals.ekb.eg/service?article_code=7653

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3

Type

Original Article

Type Code

520

Publication Type

Journal

Publication Title

Al-Azhar Bulletin of Science

Publication Link

https://absb.journals.ekb.eg/

MainTitle

MODIFICATION OF SILICA GEL SURFACE BY POLYACRYLAMIDE THROUGH THE REDOX INITIATION OF CERIC AMMONIUM NITRATE - SODIUM SULFITE SYSTEM

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Type

Article

Created At

22 Jan 2023