Date of Publication

11-23-2022

Document Type

Master's Thesis

Degree Name

Master of Science in Chemistry

Subject Categories

Chemistry

College

College of Science

Department/Unit

Chemistry

Thesis Advisor

Glenn V. Alea

Defense Panel Chair

Jaime Raul O. Janairo

Defense Panel Member

Derrick Ethelbert C. Yu
Armando Victor M. Guidote, Jr

Abstract/Summary

Graphene oxide have attracted interest over the past decade due to their unique and excellent electronic, mechanical, and chemical properties. It has gained more attention as a heterogeneous catalyst in organic transformations such as cyclization and multicomponent reactions to produce heterocyclic compounds with biological importance. To further improve the carbocatalytic activity of graphene oxide, surface modification by incorporation of different functional groups, for example the incorporation of sulfonic acid groups, is a common strategy to make the material more acidic and to create more sites of reaction. Thus, expecting to produce an effective solid Brönsted acid catalyst. Of all the published sulfonation/sulfation strategies, sulfuric acid treatment is the simplest, cheapest, and least toxic method. In this research, the effect of surface modification of graphene oxide, via sulfuric acid treatment, on its ability to promote the multicomponent Biginelli-like reaction was determined. The results from FT-IR spectroscopy, X-ray photoelectron spectroscopy and CHNS elemental analysis showed that the produced catalyst from the treatment was not expected. Due to reaction temperature used and the dehydrating nature of the reagent, the treatment could possibly reduce graphene oxide partially which could have affected the carbocatalytic activity in the reaction in terms of its percent yield.

Keywords: Graphene Oxide; Carbocatalyst; Biginelli-Like Reactions; Sulfonation; Sulfation; Reduction

Abstract Format

html

Language

English

Format

Electronic

Physical Description

xvi, 217 leaves

Keywords

Graphene--Oxidation; Catalysts; Sulfonation; Chemical reactions; Reduction (Chemistry)

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Embargo Period

11-22-2023

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