REAKSI ESTERIFIKASI ?-PINENA MENJADI ?-TERPENIL ASETAT DENGAN KATALIS ZEOLIT ALAM

Nanik Wijayati(1), Ristia Purwodiningsih(2), Nuni Widarti(3), Ella Kusumastuti(4),

DOI: https://doi.org/10.15294/sainteknol.v15i2.12406


(1) Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Negeri Semarang
(2) Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Negeri Semarang
(3) Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Negeri Semarang
(4) Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Negeri Semarang

Abstract

Turpentine is one of the oil obtained from pine tree with composition of 82% ?- pinene. Turpentin oil has a high sales value is to make the esterification reaction ?-pinene to get ?-terpinyl.   Usually esterification ?-pinene is carried out with homogeneous catalysts are corrosive and unreusable.   The purpose of the research  are to know the optimum reaction time(2, 3, 4 jam), optimum reaction temperature (30, 40, 60ºC)and optimum mol ratio of reactants (1:5, 1:15, 1:20) between ?-pinene and acetic anhydride for esterification ?-pinene to ?-terpinyl acetate using natural zeolite. Characterization of catalyst involve X- ray   Diffraction,   spectroscopy   IR   and   Scanning   Electron   Microscopy.   Product   of esterification reaction analyzed using spectroscopy IR, gas chromatography, and gas chromatography-mass  spectroscopy.  Result  of  the  analysis  using  spectrocopy  IR  show absorption of C-H at 2923 cm-1, C=O at 1725 cm-1, C=C at 1617 cm-1 and C-O at 1254 cm-1. The reaction time effect the conversion of ?-pinena  while reaction temperature and mol ratio of reactants effect on the increased levels of reaction products produced.  The optimum conditions for esterification reaction ?-pinene to ?-terpinyl acetate is at temperature of 40ºC  during 3 hours with mol ratio of reactants between ?-pinene and acetic anhydride is 1:15 to produce ?-terpenyl acetate amewweounted to 21,40%. Keywords: ?-pinena, esterification, ?-terpinyl acetate

Keywords

?-pinena, esterification, ?-terpinyl acetate

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