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All Journal JURNAL KIMIA SAINS DAN APLIKASI POSITRON Bulletin of Chemical Reaction Engineering & Catalysis Konversi Jurnal Fisika FLUX JC-T (Journal Cis-Trans): Jurnal Kimia dan Terapannya Indonesian Journal of Chemistry Jurnal Pengabdian Kepada Masyarakat (Mediteg) Jurnal Ilmiah Berkala: Sains dan Terapan Kimia JOURNAL OF WETLANDS ENVIRONMENTAL MANAGEMENT Bulletin of Chemical Reaction Engineering & Catalysis

Rodiansono Rodiansono

Chemistry Study Program, Faculty Of Mathematics And Natural Sciences, Lambung Mangkurat University, Banjarbaru

Author-ID : 2956612

Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Materials Science & Nanotechnology Physics Social Sciences

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INVESTIGASI XRD PADA INTERLOGAM Ni3Sn2 YANG DISINTESIS SECARA TERMOKIMIA: EFEK TEMPERATUR, WAKTU DAN pH HIDROTERMAL Rodiansono Rodiansono; Abdul Ghofur; Maria Dewi Astuti; Kiky C Sembiring
Jurnal Sains dan Terapan Kimia Vol 9, No 1 (2015)
Publisher : Program Studi Kimia, Universitas Lambung Mangkurat

Studi secara sistematik menggunakan difraksi sinar-X pada senyawa interlogam nikel-timah (Ni3Sn2) dibuat dengan metode termokimia yang sederhana dari bahan baku bukan organologam telah dilakukan. Larutan nikel klorida heksahidrat (3,6 mmol) dalam air dan larutan timah klorida dihidrat (2.4 mmol) dalam etanol dicampur dan dihomogenkan pada temperatur 323 K selama 18 jam. pH campuran divariasi dari 2-12 dengan cara menambahkan larutan NaOH, kemudian dilakukan hidrotermal pada temperatur 423-523 K dan waktu hidrotermal 6-72 jam dan terakhir reduksi dengan gas H2 pada 673 K selama 1,5 jam. Pengaruh kondisi pembuatan seperti temperatur hidrotermal, lama waktu hidrotermal, dan penyesuaian pH larutan bahan baku sebelum hidrotermal berpengaruh secara signifikan terhadap kristalinitas dan kemurnian interlogam Ni3Sn2 yang terbentuk. Kondisi terbaik pembuatan interlogam Ni3Sn2 dengan kristalinitas dan kemurnian yang tinggi adalah 423 K, 24 jam, dan pH 12. Kata kunci: metode termokimia, hidrotermal, penyesuain pH, interlogam Ni3Sn2

KAJIAN AKTIVITAS KATALIS Ag/ZEOLIT-TiO2 PADA DEGRADASI FOTOKATALITIK FENOL MENGGUNAKAN LAMPU UV Rodiansono Rodiansono; Sulfi Adam; Uripto Trisno Santoso
Jurnal Sains dan Terapan Kimia Vol 2, No 1 (2008)
Publisher : Program Studi Kimia, Universitas Lambung Mangkurat

Telah dilakukan penelitian tentang degradasi fotokatalitik fenol menggunakan fotokatalis zeolit-TiO2 (Ze-Ti) dan Ag/Ze-Ti, hasil modifikasi dari zeolit alam aktif (ZAA) dengan TiO2 teremban Ag. Preparasi katalis dilakukan dengan metode impregnasi basah yang dilanjutkan dengan kalsinasi pada suhu 500 oC selama 3 jam, dengan variasi Ag (% b/b) : 1; 1,5; 2; dan 2,5%. Hasil penelitian menunjukkan bahwa impregnasi TiO2 dalam zeolit alam aktif dapat meningkatkan aktivitas fotokatalis TiO2 dalam mendegradasi fenol. Hasil penelitian juga menunjukkan bahwa impregnasi Ag dapat meningkatkan aktivitas fotokatalis Ze-Ti dan mencapai optimum pada jumlah Ag teremban sebanyak 2 %. Kata kunci : fotokatalis, degradasi, fenol, Zeolit, TiO2.

KONTROL SELEKTIFITAS KATALIS ALLOY DUA LOGAM Ni-Ag PADA HIDROGENASI FURFURAL MENJADI FURFURIL ALKOHOL DAN TETRAHIDROFURFURIL ALKOHOL Rodiansono Rodiansono; Maria Dewi Astuti; Uripto Trisno Santoso; Azidi Irwan; Dwi Rasy Mujiyanti; Risnu Aritofa; Karlini Karlini; Abdurahman Abdurahman; Adi Maulana
Jurnal Sains dan Terapan Kimia Vol 12, No 2 (2018)
Publisher : Program Studi Kimia, Universitas Lambung Mangkurat

Kontrol selektifitas katalis alloy dua logam Ni-Ag ruah dan terembankan telah diselidiki secara sistematik dengan cara mengevaluasi pengaruh variasi rasio molar Ni/Ag, temperatur hidrotermal, waktu hidrotermal, dan pemilihan padatan pengemban yang sesuai dalam reaksi hidrogenasi selektif furfural. Rasio molar divariasi dari 0,75; 1,5; 2,0; dan 3;0, variasi temperatur hidrotermal dari 373 K, 423 K, dan 473 K selama 24 jam, sedangkan waktu hidrotermal divariasi dari 2-8 jam pada temperatur hidrotermal 523 K. Empat jenis padatan pengemban yang berbeda yaitu titanium oksida (TiO2), karbon aktif (C), gamma-alumina (g-Al2O3), dan aluminium hidroksida (AlOH) telah digunakan untuk katalis alloy Ni-Ag(3.0). Katalis Ni-Ag dengan rasio molar Ni/Ag = 1,5 dan 3,0 memiliki aktifitas dan selektifitas yang paling baik dalam reaksi hidrogenasi furfural menjadi furfuril alkoho dan tetrahidrofurfuril alkohol. Kenaikan temperatur hidrotermal dalam proses sintesis katalis Ni-Ag dan perubahan waktu hidrotermal untuk temperatur 523 K tidak secara signifikan meningkatkan kinerja katalis Ni-Ag(1,5) untuk reaksi yang sama. Katalis Ni-Ag(3.0) yang termbankan pada TiO2 memiliki aktifitas dan selektifitas yang superior dibandingkan dengan ruah dan pengemban yang lain.

PENGARUH PENGEMBANAN LOGAM Ni DAN Nb2O5 PADA KARAKTER KATALIS Ni/ZEOLIT DAN Ni/ZEOLIT-Nb2O5 Rodiansono Rodiansono; Wega Trisunaryanti; Triyono Triyono
Jurnal Sains dan Terapan Kimia Vol 1, No 1 (2007)
Publisher : Program Studi Kimia, Universitas Lambung Mangkurat

Telah dilakukan preparasi dan karakterisasi katalis Ni/zeolit dan Ni/zeolit-Nb2O5 untuk mempelajari pengaruh pengembanan logam Ni dan Nb2O5. Katalis dibuat dengan metode impregnasi, dilanjutkan kalsinasi pada temperatur 500oC, oksidasi dan reduksi pada temperatur 400oC, masing-masing dengan aliran gas nitrogen, oksigen dan hidrogen. Karakterisasi katalis meliputi penentuan luas permukaan spesifk, rerata jejari pori dan volume total pori menggunakan metode BET, penentuan jumlah situs asam total menggunakan metode gravimetri dan kekuatan situs asam menggunakan sepektroskopi infra merah (IR). Hasil karakterisasi menunjukkan bahwa luas permukaan spesifik turun, rerata jejari pori dan volume total pori meningkat setelah pengembanan logam Ni dan Nb2O5 dibandingkan dengan zeolit. Jumlah situs asam masing-masing katalis meningkat dibanding zeolit setelah pengembanan logam Ni dan Nb2O5. Keywords: nikel,niobium oksida, katalis

Synthesis and Characterization of Ag@C-TiO2 Nanocomposite for Degradation of Sasirangan Textile Wastewater Heny Puspita Dewi; Joko Santoso; Nur Firda Trianda; Rodiansono Rodiansono
Jurnal Kimia Sains dan Aplikasi Vol 22, No 6 (2019): Volume 22 Issue 6 Year 2019
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Carbon-titanium oxide nanocomposite (denoted as @C-TiO2) was successfully synthesized via hydrothermal method at 150°C for 24 h. The C-TiO2 nanocomposite was furtherly modified by adding an Ag metal dopant (denoted as Ag@C-TiO2) to improve and applied to the photocatalytic degradation of Sasirangan textile wastewater. The composite photocatalysts were characterized by XRD and UV–Vis DRS spectroscopies. XRD patterns showed that TiO2 in @C-TiO2 mainly consisted of a brookite phase, as indicated by a series sharp diffraction peak at 2θ = 27.2° (111), 31.5° (121) and 55.9° (241). The calculated band gap energy (Eg) derived from UV-Vis DRS spectra for TiO2, @C-TiO2, and Ag@C-TiO2 were 2.95 eV, 2.54 eV, and 2.74 eV, respectively. Ag@C-TiO2 photocatalyst was found to be active for the photocatalytic degradation of Sasirangan textile wastewater, as indicated by the change of wastewater color from dark to clear. The quantitative photocatalytic activity of Ag@C-TiO2 was evaluated in the degradation of methylene blue, whereas the conversion of methylene blue was 41.3%. The addition of Ag to @C-TiO2 is believed to play an essential role in the enhancement of photocatalytic activity.

Effect of Precursor and Temperature Annealing on the Catalytic Activity of Intermetallic Ni3Sn2 Alloy Rodiansono Rodiansono; Atina Sabila Azzahra; Sadang Husain; Pathur Razi Ansyah
Bulletin of Chemical Reaction Engineering & Catalysis 2022: BCREC Volume 17 Issue 4 Year 2022 (December 2022)
Publisher : Department of Chemical Engineering - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.17.4.15923.743-754

The effect of nickel precursors and the temperature annealing to obtain intermetallic Ni3Sn2 alloy catalysts on its activity and selectivity in the selective hydrogenation of biomass-derived furfural (FFald) were investigated. Two types of nickel precursors (c.a., i) nickel metal (Ni°) derived from Raney®nickel and ii) nickel ion (Ni2+) derived from nickel chloride) were employed as the starting materials via hydrothermal at 423 K for 24 h followed by reduction with H2 at the elevated temperature of 573-873 K for 1.5 h. The physico-chemical properties of the intermetallic Ni3Sn2 were characterized by XRD, N2-, and H2-adsorption, ICP-AES, and NH3-TPD. The intermetallic Ni3Sn2 alloy catalysts, both bulk and supported, demonstrated high activity and selectivity towards hydrogenation of FFald. The activity and selectivity of g-Al2O3 and AA-supported Ni3Sn2 alloy catalysts in the hydrogenation of FFald to furfuryl alcohol (FFalc) were maintained even after annealing at up to 873 K, but that of bulk Ni3Sn2 drastically dropped. Ni-Sn alloy catalysts which were obtained from Raney®Ni precursor showed more stable than that of nickel salts during hydrogenation of furfural to furfuryl alcohol. Copyright © 2022 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).

Potensi Nanokomposit Fe3O4@C dari Bijih Besi Sebagai Pendeteksi Kadar Glukosa Sadang Husain; Suryajaya Suryajaya; Ninis Hadi Haryanti; Tetti Novalina Manik; Rodiansono Rodiansono; Sepfina Monica Hutasoit; Agus Riyanto; Sudarningsih Sudarningsih
POSITRON Vol 9, No 2 (2019): November Edition
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Univetsitas Tanjungpura

Sintesis nanokomposit Fe3O4@C dari bijih besi Tanah Laut dan sumber karbon dari gula pasir telah dilakukan dengan menggunakan metode kopresipitasi dan metode hidrotermal. Penelitian dilakukan untuk mengetahui karakteristik Fe3O4@C berbahan bijih besi. Sebanyak 6 g bijih besi digunakan sebagai bahan baku pembuatan Fe3O4. FeSO4.7H2O digunakan sebagai sumber ion Fe2+. Sampel diaduk dengan menggunakan temperatur 70oC dengan kecepatan adukan 450 rpm. Karbon (C) disintesis menggunakan metode hidrotermal pada temperatur 300oC dengan menambahkan etilon glikol sebagai surfaktan. Sampel Fe3O4 dan C digabung pada suhu 250oC selama 30 menit dengan kecepatan 500 rpm. Sampel Nanokomposit Fe3O4@C dikarakterisasi menggunakan Vibrating Sample Magnetometer, Fourier Transform Infrared, Transmission Electron Microscopy, serta elektrokimia. Dari penelitian, diperoleh nilai magnetisasi saturasi sebesar 24,82 emu/g, jenis ikatan yang terdapat dalam nanokomposit Fe3O4@C adalah ikatan Fe-O, C=O, C=N dan O-H, distribusi ukuran partikel dalam rentang 5 nm – 20 nm, dengan rata-rata ukuran partikel 12 nm, serta nilai sensitivitas 0,285 mA/ppm.

Synthesis of Chitosan-Coated Magnetic Microparticle Using Glutaraldehyde as Crosslinker and PEG as Spacer Arm and Its Application as Adsorbent of Peat Humic Acid Uripto Trisno Santoso; R. Rodiansono; Ahmad Budi Junaidi; Dewi Umaningrum
Journal of Wetlands Environmental Management Vol 3, No 1 (2015): January-June
Publisher : Center for Journal Management and Publication

A simple procedure for synthesis of chitosan-coated magnetic microparticle (CMMP) using glutaraldehydeas a cross-linker and polyethylene glycol (PEG) as a spacer arm has been developed. The functionalizedmicroparticle were prepared using an inexpensive, simple, rapid, one-pot process, based on the heating ofchitosan, PEG, and ferrous sulfate mixture at high pH. X-ray diffraction results indicated that the surfacemodifiedFe3O4 microparticle did not lead to phase change unlike the pure Fe3O4. Magnetic chitosanadsorbent has been evaluated for removal of peat humic acid from its aqueous solution.

Selective Hydrogenation of Biomass-derived Furfural over Supported Ni3Sn2 Alloy: Role of Supports Rodiansono Rodiansono; Maria Dewi Astuti; Syahrul Khairi; Shogo Shimazu
Bulletin of Chemical Reaction Engineering & Catalysis 2016: BCREC Volume 11 Issue 1 Year 2016 (April 2016)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.11.1.393.1-9

A highly active and selective hydrogenation of biomass-derived furfural into furfuryl alcohol was achieved using supported single phase Ni3Sn2 alloy catalysts. Various supports such as active carbon (AC), g-Al2O3, Al(OH)3, ZnO, TiO2, ZrO2, MgO, Li-TN, and SiO2 have been employed in order to understand the role of the support on the formation of Ni3Sn2 alloy phase and its catalytic performance. Supported Ni3Sn2 alloy catalysts were synthesised via a simple hydrothermal treatment of the mixture of aqueous solution of nickel chloride hexahydrate and ethanol solution of tin(II) chloride dihydrate in presence of ethylene glycol at 423 K for 24 h followed by H2 treatment at 673 K for 1.5 h, then characterised by using ICP-AES, XRD, H2- and N2-adsorption. XRD profiles of samples showed that the Ni3Sn2 alloy phases are readily formed during hydrothermal processes and become clearly observed at 2θ = 43-44o after H2 treatment. The presence of Ni3Sn2 alloy species that dispersed on the supports is believed to play a key role in highly active and selective hydrogenation of biomass-derived furfural towards furfuryl alcohol. Ni3Sn2 on TiO2 and ZnO supports exhibited much lower reaction temperature to achieved >99% yield of furfuryl alcohol product compared with other supports. The effects of loading amount of Ni-Sn, reaction conditions (temperature and time profile) on the activity and selectivity towards the desired product are systematically discussed.

Selective Hydrogenation of Stearic Acid to 1-Octadecanol Using Bimetallic Palladium-Tin Supported on Carbon Catalysts at Mild Reaction Conditions Rodiansono Rodiansono; Elisa Hayati; Atina Sabila Azzahra; Maria Dewi Astuti; Kamilia Mustikasari; Sadang Husain; Sutomo Sutomo
Bulletin of Chemical Reaction Engineering & Catalysis 2021: BCREC Volume 16 Issue 4 Year 2021 (December 2021)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.16.4.11895.888-903

Bimetallic palladium-tin catalysts supported on microporous carbon (denoted as Pd-Sn(x)/C, loading amount of Pd = 5 wt% and x = Pd/Sn molar ratio; c.a. 3.0; 1.5; and 1.0) showed high selectivity in the hydrogenation of stearic acid towards 1-octadecanol (stearyl alcohol) under mild reaction conditions. Pd-Sn(x)/C catalysts were synthesized via the hydrothermal method at temperature of 150 °C for 24 h, and reduced with H2 at 400 °C for 3 h. Pd-Sn(1.5)/C catalyst exhibited the highest yield of stearyl alcohol (1-octadecanol) (up to 73.2%) at 100% conversion of stearic acid at temperature 240 °C, initial H2 pressure of 3.0 MPa, a reaction time of 13 h, and in 2-propanol/water solvent. The high selectivity of alcohols over Pd-Sn(1.5)/C catalyst can be attributed to the formation of bimetallic Pd-Sn alloy phases (e.g. Pd3Sn and Pd3Sn2) as obviously depicted by XRD analysis. The presence of co-promotor Sn and the formation of bimetallic may play a pivotal role in the high selectivity of 1-octadecanol. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).

Co-Authors A.A. Ketut Agung Cahyawan W Abdul Ghofur Abdul Ghofur Abdullah A. Abdullah Abdullah Abdullah Abdullah Abdullah Abdullah Abdullah Adi Maulana Agung Nugroho Agus Riyanto Ahmad Budi Junaidi Anggono Wijaya Anggono Wijaya Anggono Wijaya Annisa Annisa Asma Fauziah Atina Sabila Azzahra Atina Sabila Azzahra Azidi Irwan Azzahra, Atina Sabila Bodoi, Thea Seventina Desiani Budi Junaidi, Budi Chairul Irawan Citra Ariyanti Dahlena Ariyani Dewi Umaningrum Dewi Umaningrum Dewi, Heny Puspita Ditya Kristina Dwi Rasy Mujiyanti Dwi Rasy Mujiyanti Dwi Rasy Mujiyanti Dwi Rasy Mujiyanti Edi Mikrianto Elisa Hayati Faisal F. Faisal Hasanah Hasanah Heny Puspita Dewi Husain, Sadang Ina Risnawati Iryanti Fatyasari Nata, Iryanti Fatyasari Jaka Darma Jaya Jayanudin Jayanudin Joko Santoso Kamilia Mustikasari Kamilia Mustikasari Karlini Karlini Kiky C SEMBIRING Kiky C. Sembiring Kiky Corneliasari Sembiring Kurnia Putri Leo Saputra Maria Dewi Astuti Muhammad Agus Muljanto Muhammad Iqbal Pratama Mustari, Ikhsan Nana Widyastuti Ninis Hadi Haryanti, Ninis Hadi Nobuyuki Ichikuni Nur Firda Trianda Nurfitriani, Anggita Paradilla Catur Wulabdari Paradilla Catur Wulandari Pathur Razi Ansyah Puput Nopitasari Radhina Oktari Rahmat Eko Sanjaya Rahmidah Ulfah R. Rahmida Ulfah Reda Ariyantie Ridhoni, Arif Risnu Aritofa Sadang Husain Sadang Husain Sadang Husain Sadang Husain Sadang Husain Sepfina Monica Hutasoit Shimazu Shogo Shogo Shimazu Shogo Shimazu Suarso, Eka Sudarningsih Sudarningsih Sulfi Adam Sunardi, Ph.D., Sunardi Sunnardianto, Gagus Ketut Suryajaya Suryajaya Susi Susi Sutomo Sutomo Sutomo Sutomo Sutomo Sutomo Syahrul Khairi Takayoshi Hara Takayoshi Hara Tantriati T. Tantriati Tetti Novalina Manik Triyono Triyono Triyono Triyono Umi Baroroh Lili Utami Uripto Trisno Santoso Uripto Trisno Santoso Uripto Trisno Santoso Wega Trisunaryanti Wega Trisunaryanti Wega Trisunaryanti

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