Direct synthesis of highly crystalline ZSM-5 from Indonesian kaolin

Hartati Hartati*, Alfa Akustia Widati, Tanti Kartika Dewi, Didik Prasetyoko

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


Direct synthesis of ZSM-5 from Indonesian kaolin without calcination for the formation of metakaolin was done through the addition of an alkaline solution (sodium fluoride and sodium hydroxide) and the fusion using sodium hydroxide. Crystallization was conducted through hydrothermal method at 80°C for four days. XRD diffractogram and FTIR spectra showed that the addition of sodium fluoride solution in the ratio Si/Al = 100 could produce highly crystalline ZSM-5, whereas the use of a sodium hy-droxide solution and fusion process did not produce the crystalline ZSM-5.

Original languageEnglish
Pages (from-to)251-255
Number of pages5
JournalBulletin of Chemical Reaction Engineering and Catalysis
Issue number2
Publication statusPublished - 2017


  • Crystalline ZSM-5
  • Kaolin
  • Sodium fluoride
  • Synthesis of ZSM-5


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