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Asian Journal of Research in Chemistry
Year : 2016, Volume : 9, Issue : 3
First page : ( 145) Last page : ( 149)
Print ISSN : 0974-4169. Online ISSN : 0974-4150.
Article DOI : 10.5958/0974-4150.2016.00024.9

Synthesis, Characterization, and Catalytic Ability Evaluation of MgO-γ-Al2O3/TiO2-SO42- for Transesterification of Waste Cooking Oil by Methanol

Ngo Minh Duc1, Tran Thi Nhu Mai2, Giang Thi Phuong Ly3, Nguyen Ba Trung1

1Department of Chemistry, University of Education, The University of Danang

2Department of Chemistry, Hanoi University of Science

3Hanoi University of Science and Technology

*Corresponding Author E-mail:

Online published on 23 May, 2016.

Abstract

The catalytic system MgO-γ-Al2O3/TiO2-SO42- was synthesized, and then characterized by XRD, IR, NH3-TPD, CO2-TPD, BET, EDX methods. As can be seen from the results of physical characterization, the synthesized MgO-γ-Al2O3/TiO2-SO42- material owns a large surface area of 261.85 m2/g, a mean capillary diameter of 95.5 Å. The presence of TiO2 and SO42- creates strong acid sites on the catalyst surface, as indicated by the NH3 desorption temperature peak at 509.5°C and 546.6°C. The presence MgO phase creates strong basic sites, as specified by the CO2 desorption temperature peak at 502.1°C. A transesterification between methanol and waste cooking oil (the volume ratio of methanol to oil of 1: 1) using MgO-γ-Al2O3/TiO2-SO42--as a catalyst was carried out at 120°C for 4 hours. The reaction efficiency was about 98.1%.

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Keywords

Biodiesel synthesis, MgO-γ-Al2O3/TiO2-SO42-, Acid-base catalyst, mesoporous material, transesterification.

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