A Purwaningsih and A N Kristanti and D Z Mardho, .- and D W Saraswati, .- and N M Putri, .- and N H Saputri, .- and Hartati, .- (2019) Determination of Bronsted Acid Sites in Porous Aluminosilicate Solid Catalysts using Volumetric and Potentiometric Titration Method. In: The 12th Congress of Indonesian Soc. for Biochemistry and Molecular Biology in Conjunction With The 2nd Int. Conf. "Collaboration Seminar of Chemistry and Industry (CoSCI)". IOP Conf. Series: Earth and Environmental Science, 217 (217). IOP Publishing, Universitas Airlangga, Surabaya, Indonesia, pp. 1-5.

	Text (Fulltext) C45. Fulltext.pdf Download (990kB)
	Text (Review dan Validasi) C45. Validasi dan review.pdf Download (4MB)
	Text (Similarity) C45. Similarity (2).pdf Download (1MB)

Abstract

The Brønsted acid site was determined by using volumetric and potentiometric titration method. The result showed that the Brønsted acid sites of synthesized aluminosilicate using volumetric titration method are aluminosilicate-1: 0.5491; aluminosilicate-2: 0.5523; and aluminosilicate-3: 0.5772 mmol/g and using potentiometric titration method are aluminosilicate-1: 4.7087; aluminosilicate-2: 5.5739; and aluminosilicate-3: 8.1059 mmol/g. FTIR-pyridine also showed the same trend line, the Brønsted acid sites concentration increased by the increasing of Si/Al mole ratio. The results of the measurement using FTIRpyridine showed the Brønsted acid sites concentration of aluminosilicate-1; aluminosilicate-2; and aluminosilicate-3 were 0.0293; 0.330; and 0.0336 mmol/g, respectively. The Brønsted acid sites concentration of aluminosilicate was higher using volumetric titration and potentiometric titration methods than using the FTIR-pyridine method, but the trend line was the same, the higher Si/Al mole ratio, concentration of Brønsted acid sites increased.

Actions (login required)

View Item