Win Win MarEkasith SomsookCenter for CatalysisMahidol University2018-06-112018-06-112012-03-01ScienceAsia. Vol.38, No.1 (2012), 90-94151318742-s2.0-84860648598https://repository.li.mahidol.ac.th/handle/20.500.14594/15248A KCl-doped CaO catalyst synthesized by a wet impregnation method under microwave irradiation was studied in the transesterification of refined soybean oil with methanol at 338 K. The catalyst was characterized using powder X-ray diffraction, N 2 adsorption-desorption, transmission electron microscopy, and FT-IR techniques. The basic strength of the catalysts was also determined by the Hammett indicator method. The KCl/CaO catalyst exhibited a chemical stability in the reaction medium as well as a good resistance to feedstocks with high acidity.Mahidol UniversityMultidisciplinaryArticleSCOPUS10.2306/scienceasia1513-1874.2012.38.090