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Hasil Pencarian

Ditemukan 4 dokumen yang sesuai dengan query
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Widodo Wahyu Purwanto
Production hydrogen and nanocarbon via methane decomposition using Ni-based catalysts effect of acidity and catalyst diameter
" Objectives of this research are mainly to study impacts of acidity strength (by varying amount of precipitant and loading Al-Si) and the effect of nickel particle size (by varying calcinations temperature) on decomposition reaction performances. In this research, high-nickel-loaded catalyst is prepared with two methods. Ni-Cu/Al catalysts were prepared with co-precipitation method. While the Ni-Cu/Al-Si catalyst were prepared by combined co-precipitation and sol-gel method. The direct cracking of methane was performed in 8mm quartz fixed ... "
Depok: Lembaga Penelitian Universitas Indonesia, 2005
AJ-Pdf
Artikel Jurnal  Universitas Indonesia Library
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Widodo Wahyu Purwanto
Production hydrogen and nanocarbon via methane decomposition using Ni-based catalysts. effect of acidity and catalyst diameter
" Objectives of this research are mainly to study impacts of acidity strength (by varying amount of precipitant and loading Al-Si) and the effect of nickel particle size (by varying calcinations temperature) on decomposition reaction performances. In this research, high-nickel-loaded catalyst is prepared with two methods. Ni-Cu/Al catalysts were prepared with co-precipitation method. While the Ni-Cu/Al-Si catalyst were prepared by combined co-precipitation and sol-gel method. The direct cracking of methane was performed in 8mm quartz fixed ... "
Depok: Lembaga Penelitian Universitas Indonesia, 2005
AJ-Pdf
Artikel Jurnal  Universitas Indonesia Library
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Widodo Wahyu Purwanto
Pengaruh Jenis Presipitan dan Iradiasi Ultrasonik pada Katalis Ni/CeO2-MgO-La2O3/Al2O3 untuk Reaksi Oksidasi Parsial Metana
" The effect of precipitant and ultrasonic over Ni7CeO,-MgO-La,0/A503 catalyst was studied in an atmospheric fixed-bed reactor for partial oxidation of methane. Two types of precipitant used in this work were Na2C)3 and NH4OH2 and the length of ultrasonic iradiation was 60 minutes (1 hour). The bulk surface area, nickel particle diameter, nickel dispersion and morphology of the catalysts were investigated by various characterization techniques, including BET] XRD, H; chemisorption and SEM The partial oxidation of ... "
Jurnal Teknologi, 19 (4) Desember 2005: 338-344, 2005
JUTE-19-4-Des2005-338
Artikel Jurnal  Universitas Indonesia Library
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Khansa Rifa Ramadhani
Perolehan Kembali Logam Nikel dari Limbah Katalis Steam Reforming Bermetode Leaching (Asam Laktat + Hidrogen Peroksida) dan Ekstraksi Cair-Cair dengan Cyanex 272 = Recovery of Nickel from Spent Steam Reforming Catalyst by Leaching (Lactic Acid + Hydrogen Peroxide) and Solvent Extraction with Cyanex 272
" Nikel merupakan logam yang banyak dimanfaatkan untuk keperluan industri, seperti pada katalis proses kimia. Kebutuhan atas nikel diperkirakan terus meningkat setiap tahunnya. Untuk dapat memenuhi kebutuhan nikel, perolehan kembali logam nikel dari sumber sekunder, seperti limbah katalis dapat menjadi alternatif yang ekonomis. Limbah katalis yang mengandung logam nikel sebesar 15% berat dapat diperoleh dari proses steam reforming. Perolehan kembali logam nikel dari limbah katalis dilakukan dengan metode leaching menggunakan asam laktat sebagai leaching agent yang ... "
Depok: Fakultas Teknik Universitas Indonesia, 2022
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UI - Skripsi Membership  Universitas Indonesia Library