Image of Aktivitas Katalis Mangan Oksida Disintesis Menggunakan Metode Refluk KMnO4 Dan Asam Sitrat Untuk Mendegradasi Metilen Biru
Penanda Bagikan

CD Tesis

Aktivitas Katalis Mangan Oksida Disintesis Menggunakan Metode Refluk KMnO4 Dan Asam Sitrat Untuk Mendegradasi Metilen Biru

The objectives of the research are to synthesize manganese oxide catalysts by using KMnO4 and citrat acid via reflux method and to investigate their catalytic activities for the degradation of methylene blue. The resulting products obtained through the variation of reflux time (1,3,6,9 and 12 hours) are birnessite-type octahedral layered manganese oxides. The catalysts were then calcined up to 600 oC for 4 hours and referred to as S catalysts, whereas the catalysts without calcination were called KS catalysts. The S or KS catalysts products were also characterized using XRD, SEM, AAS, AOS, and pHzpc.
The XRD result for KS catalyst displayed more crystalline phase than S catalyst. The SEM results for S catalysts showed the morphology of chunks with plate shape, which have fine particles on the surface, whereas KS catalysts show irregular morphology of aggregation of particles. Furthermore, the birnessite catalysts had AOS, pHzpc, and K/Mn ratio of 2-4, 3-6, and 0,6-0,8 respectively. The catalytic activities of as-prepared birnessite prior to and following to calcinations were evaluated for the degradation of methylene blue (MB) with H2O2 as an oxidant. The maximum degradation was 94% (S6) obtained without calcination catalyst. The degradation of methylene blue using hollow manganese birnessite type follows second-order reaction kinetics with respect to methylene blue concentration with MB degradation rate constant of 0.0033 Lmg-1min-1 where the value of R2 is 0.9655 for catalyst without calcination. The rate constant for calcination catalyst is 0.0033 Lmg-1min-1 where the value of R2 is 0.9776.


Keywords: manganese oxide, reflux method, birnessite, degradation, methylene blue

Ketersediaan
#
Perpustakaan Universitas Riau 10 05. 219 (0003)
10 05. 219 (0003)
Tersedia
Informasi Detail
Judul Seri
-
No. Panggil
10 05. 219 (0003)
Penerbit
Pekanbaru : Universitas Riau – Pascasarjana – Tesis Kimia.,
Deskripsi Fisik
xii, 120 hlm.; ill.; 29 cm
Bahasa
Indonesia
ISBN/ISSN
-
Klasifikasi
10 05. 219 (0003)
Tipe Isi
-
Tipe Media
-
Tipe Pembawa
-
Edisi
-
Subjek
PASCASARJANA (MAGISTER) KIMIA
Info Detail Spesifik
-
Pernyataan Tanggungjawab
Versi lain/terkait

Tidak tersedia versi lain

Lampiran Berkas
Komentar
Anda harus masuk sebelum memberikan komentar