Preparation of KI/Hydroxyapatite Catalyst from Phosphate Rocks and Its Application for Improvement of Biodiesel

Widayat Widayat1,2,3, Hadiyanto Hadiyanto1,2, Permadi Wisnu Aji Wardani1

  • 1Chemical Engineering Department, Faculty of Engineering, Diponegoro University, 50271 Semarang, Indonesia.

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