Synthesis strategy of hierarchical alumiosilicates from low grade Indonesian Kaolin with adjusted activity in acetalization reaction

Hartati Hartati, Tjitjik Srie Tjahjandarie, Aning Purwaningsih, Susana Murti, Nastiti Mustika Rizki Ikhtiarsih, Dea Zaqiatul Mardho, Nastiti Heru Saputri, Christina Natalia Lamanele, Putri Bintang Dea Firda

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)

Abstract

Synthesis strategy of hierarchical aluminosilicates was carried out by varying the starting material, type of a basic solution, and the hydrothermal condition. Aluminosilicate was synthesized using pre-treated low-quality kaolin by three kinds of basic solution, such as sodium hydroxide, sodium fluoride, and tetrapropyl ammonium hydroxide. The hydrothermal condition was carried out by gradual temperature and constant temperature. The desired mole ratio of Si/Al achieved by dealumination or by addition of silica. Products were characterized by X-ray diffraction, FTIR spectrometry, and nitrogen physisorption. Cation exchange was carried out on the product to obtain an acid catalyst. The acidity test of the catalyst was carried out by FTIR-pyridine spectrometry. The catalyst activity test was carried out to the acetalization reaction of 3,4-dimethoxybenzaldehyde with propylene glycol. The results showed that the catalyst synthesized with the basic solution of tetrapropyl ammonium hydroxide had the highest acid site number and the highest conversion of 3,4- dimethoxybenzaldehyde to acetal.

Original languageEnglish
Title of host publicationSymposium of Materials Science and Chemistry II
EditorsTutik Dwi Wahyuningsih, Roto Roto, Dwi Siswanta, Rohana Adnan, Laurent Commeiras, Kuwat Triyana, Kuwat Triyana, Indriana Kartini, Julius Motuzas
PublisherTrans Tech Publications Ltd
Pages526-534
Number of pages9
ISBN (Print)9783035716139
Publication statusPublished - 2020
Event5th International Conference on Science and Technology, ICST 2019 - Yogyakarta, Indonesia
Duration: 30 Jul 201931 Jul 2019

Publication series

NameKey Engineering Materials
Volume840 KEM
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795

Conference

Conference5th International Conference on Science and Technology, ICST 2019
Country/TerritoryIndonesia
CityYogyakarta
Period30/07/1931/07/19

Keywords

  • Acetalization
  • Hierarchical aluminosilicates
  • Kaolin

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