Edy Cahyono
Jurusan Kimia FMIPA Universitas Negeri Semarang Gedung D6 Lantai 2 Kampus Sekaran Gunungpati Semarang, 50229, Telp. (024)8508035

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Journal : Jurnal Zeolit Indonesia

THE KINETIC OF CYCLIZATION-ACETYLATION (R)-(+)-CITRONELLAL WITH ANHYDRIDE ACETIC ACID WHICH CATALYZED OF Zn2+-NATURAL ZEOLITE Cahyono, Edy; Muchalal, M.; Triyono, Triyono; Pranowo, Harno Dwi
Jurnal Zeolit Indonesia Vol 8, No 1 (2009)
Publisher : Jurnal Zeolit Indonesia

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Abstract

Reaction kinetic of acetylation-cyclization (R)- (+)-citronellal with acetic acid anhydride which catalyzed Zn2+-zeolite (Zn2+-Za) was analyzed by Langmuir- Hinshelwood Models. (R)-(+)-citronellal isolated from lemongrass oil with fractionation distillation reduced pressure and analyzed anantiomer ratio with GC chiral column β- DEX 225. Catalyst preparation of Zn2+-Za conducted by acid activation on natural zeolite Malang 100 mesh using 1% HF and 6 M HCl, then soaked on 0,1 M NH4Cl. Calcination was done at 450oC during 1 hour with N2 flow to achieved H-natural zeolite (HZa). Cation exchange H-Za with 0,1 M ZnCl2 conducted to obtain Zn2+-natural zeolit (Zn2+-Za). Reactions of Cyclization-acetylation (R )-(+)- citronellal using a catalyst of Zn2+-Za was done by varying molar ratio of (R )-(+)- citronellal with acetic acid anhydride, namely 0.25, 0.5, 1.0; 1 , 25; 1.5. During the reaction, into system, samples were taken each 1 mL of reaction with duration 10, 20, 30, 60, 120, 180 minutes. Reaction product was extracted with n-hexana. Structure elucidation was done by GC-MS, FTIR spectrophotometer, and 1H-NMR spectrometer. The result showed a greater molar ratio (R)-(+)-citronellal against quantity of acetic acid anhydride acetic, pulegil total was decline. Acetylation-cyclization catalyzed with Zn2+-Za on duration of 30 minutes and 80°C has k of 30.964 to 47.619 mmol (minute.gram catalyst)-1 and KSIT/KAA of 7.09.
Co-Authors Achmad Binadj, Achmad Agustina, Diah Tria Ardi Hermawan, Ardi Arisna Rahmawati, Arisna Arofah, Barorotul Ulfah Asmaul Husna Astuti, Fiki Kusuma Avelisia Kusumawati, Avelisia Aziz Rizqi Pratama, Muhammad Budiarti, Santi Cepi Kurniawan Dewi Selvia Fardhyanti Dian Kumala Sari, Dian Kumala Doni Setiawan Duong, Nguyen Thuy Eko Budi Susatyo Endang Susilaningsih Ersanghono Kusuma Ersanghono Kusumo, Ersanghono Fianti Fianti, Fianti Gema Arief Wicaksana, Gema Arief Harjono Harjono Harno Dwi Pranowo Henny Ayu Pramesti, Henny Ayu Ida Maesyaroh, Ida Indri Saputri, Indri Julianto Pratomo, Julianto Karomah Dwidayati, Nur Kasmadi Imam Supardi Kusoro Siadi Latifah - Listanti, Dian M. Muchalal Machmudah - Madayanti Khomsyatun, Madayanti Marfina, Apriza Mariana, Elyta Merlianita, Ditha Mubarak, Syarifatul Muchalal Muchalal Murbangun Nuswowati Murtiyanti Setyaningrum, Murtiyanti Nanik Wijayati Natanael Natanael, Natanael Niasri, Niasri Nico Aditya Wijaya, Nico Aditya Noor Malikhah Muazizah, Noor Malikhah Nuni Widiarti Nur Amalia Afiyanti, Nur Amalia Nurcahyo, Bowo Pangesti, Rizki Dwi Priyosetyoko Priyosetyoko, Priyosetyoko Rahayu, Endah Fitriani Ratnawati Kusuma Ningsih Ribka Wahyuningrum, Ribka Riyanti . Rizalina, Hartias Rizka Rida Utami Rizkita, Aden Dhana Romawati, Carolina Rudiyanto pakiz, Rudiyanto Saptorini Saptorini, Saptorini Septiyaningsih, Tri Setiarto Pratigto, Setiarto Soeprodjo - Sri Haryani Sri Mursiti Sri Nurhayati Suci Fajariah, Eka Sudarmin Sudarmin Sufiati Bintanah Supartono Supartono Supranowo Supranowo Syafaatunniyah, Syafaatunniyah Tjahyo Subroto, Tjahyo Triyono Triyono Ulung Aggraito, Yustinus Umi Rahmawati,, Umi Uswatun Kasanah, Uswatun Van, Ngoc Chau Widayani, Anis Yunita, Wulansari