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All Journal VALENSI Reaktor Jurnal Ilmu Dasar IPTEK Journal of Proceedings Series IPTEK The Journal for Technology and Science Jurnal Sains dan Teknologi Jurnal Bahan Alam Terbarukan Journal of Mathematical and Fundamental Sciences Alchemy Jurnal Penelitian Kimia Jurnal Zeolit Indonesia ALCHEMY Jurnal Penelitian Kimia Indonesian Journal of Chemistry Akta Kimia Indonesia Chemistry Indonesian Journal of Chemical Research QARDHUL HASAN: MEDIA PENGABDIAN KEPADA MASYARAKAT Walisongo Journal of Chemistry Automotive Experiences Makara Journal of Science Sewagati International Journal of Renewable Energy Development Bulletin of Chemical Reaction Engineering & Catalysis
Didik Prasetyoko
Institut Teknologi Sepuluh Nopember
Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Public Health Social Sciences Other

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Esterification of Benzyl Alcohol with Acetic Acid over Mesoporous H-ZSM-5 Desy Tri Kusumaningtyas; Didik Prasetyoko; Suprapto Suprapto; Sugeng Triwahyono; Aishah Abdul Jalil; Afifah Rosidah
Bulletin of Chemical Reaction Engineering & Catalysis 2017: BCREC Volume 12 Issue 2 Year 2017 (August 2017)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.12.2.806.243-250

Abstract

In this study, the performance of mesoporous ZSM-5 has been studied on the esterification of acetic acid (AA) with benzyl alcohol (BA). The mesoporous ZSM-5 catalyst has been synthesized with the variation of aging time i.e. 6, 12, and 24 hours at the same temperature, 70 °C. The cation exchange of Na-ZSM-5 to H-ZSM-5 was performed before the catalytic activity test. The acidity type and amount of solids were determined by FT-IR spectroscopy using pyridine as a probe molecule. The characterization by pyridine adsorption showed that at a higher mesoporous surface area, the number of Lewis acid was increased. The highest mesoporous surface area, Lewis, and Brönsted acid sites were obtained by sample which has the lowest crystallinity, i.e. 255.78 m2/g, 0.2732 mmol/g, and 0.20612 mmol/g, respectively. Influence of mesoporous volume was studied on the catalytic activity of the mesoporous ZSM-5 in the esterification reaction. Conversion of acetic acid in the esterification reaction for samples of    HZ-6, HZ-12, and HZ-24 were obtained by titration methods, i.e. 39.59, 36.39, and 32.90 %, respectively. Hence, the reaction temperature of 393 K, molar ratio 1:4 (AA:BA) and catalyst loading 5 % were selected as an optimum reaction parameters. 
The Effect of Mesoporous H-ZSM-5 Crystallinity as a CaO Support on the Transesterification of Used Cooking Oil Amalia Putri Purnamasari; Meyga E. F. Sari; Desy T. Kusumaningtyas; Suprapto Suprapto; Abdul Hamid; Didik Prasetyoko
Bulletin of Chemical Reaction Engineering & Catalysis 2017: BCREC Volume 12 Issue 3 Year 2017 (December 2017)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.12.3.802.329-336

Abstract

Transesterification of used cooking oil was carried out over calcium oxide supported on mesoporous H-ZSM-5 prepared from kaolin as solid base catalysts. Solid basic catalysts investigated in this study were characterized by XRD, FTIR spectroscopy, and N2 adsorption-desorption techniques. The XRD pattern showed peaks corresponding to the CaO and mesoporous ZSM-5 in the sample. The peak intensity of the CaO increased as CaO loading in ZSM-5 was increased. The characterization based on FTIR spectroscopy revealed that CaO/H-ZSM-5 solids have functional groups characteristics of both CaO and mesoporous H-ZSM-5 which appeared in the band at around  550 cm-1 and 480 cm-1. The isotherm of N2 adsorption-desorption of CaO/H-ZSM-5 indicated the type IV isotherm with the presence of hysteresis loop. For the catalytic activity, the biodiesel yield using catalyst of 10 % CaO/HZSM-5 (100 %), 30 % CaO/HZSM-5 (100 %), 50 % CaO/HZSM-5 (100 %) were 24.34, 27.37, and 29.73 %, respectively. It also related with the basic active site, when loading CaO increased, the basic active site also increased. 
Synthesis of SrO.SiO2 Catalyst and Its Application in the Transesterification Reactions of Soybean Oil Nuni Widiarti; Lisa Amalia Suryana; Nanik Wijayati; Endah Fitriani Rahayu; Harjito Harjito; Samuel Budi Wardhana; Didik Prasetyoko; Suprapto Suprapto
Bulletin of Chemical Reaction Engineering & Catalysis 2017: BCREC Volume 12 Issue 2 Year 2017 (August 2017)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.12.2.804.299-305

Abstract

The synthesis and characterization of SrO.SiO2 were carried out. The rice hull ash was utilized as a source for SiO2. The SrO.SiO2 was prepared by sol-gel technique, and the ratios of SrO:SiO2 were      varied as 0:1, 1:0, 3:2, 2:4, and 2:7. The sol-gel was calcined at 800 oC for 4 hours. The result was    characterized using XRD and FTIR. The diffraction pattern shows that the diffraction angle was shifted, and the intensity of the main peaks was increased. This research indicated that the            crystallinity of SrO was improved at the higher SiO content. Further, a new peak was observed in the IR spectra at a wavenumber of 900 cm-1 indicating the appearance of new functional groups of the SrO.SiO2. The catalytic activity of SrO.SiO2 on transesterification reaction was optimized. The optimum condition was obtained at SrO.SiO2 of 2:7, reaction time of 30 minutes, reaction temperature of 65 oC, the amount of catalyst of 1 % w/v of reactants, and the biodiesel yield of 96.66 %. 
Understanding Pore Surface Modification of Sucrose-Modified Iron Oxide/Silica Mesoporous Composite for Degradation of Methylene Blue Yuvita Eka Pertiwi; Maria Ulfa; Teguh Endah Saraswati; Didik Prasetyoko; Wega Trisunaryanti
Bulletin of Chemical Reaction Engineering & Catalysis 2021: BCREC Volume 16 Issue 3 Year 2021 (September 2021)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.16.3.10619.459-471

Abstract

Santa Barbara Amorphous (SBA-15) containing iron oxide with a sucrose-modified in a heterogeneous reaction for degradation methylene blue (MB) successful synthesized used hydrothermal, ultrasonication, and wet impregnation method. SBA-15 is mesoporous silica that can easily serve as external and internal surfaces making it suitable for a wide range of applications. The structure and morphology of materials were characterized using Surface Area Analyzer (SAA), X-ray diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscope-Energy Dispersive X-Ray (SEM-EDX), and Transmission Electron Microscopy (TEM). Iron oxide impregnated as a maghemite phase has an average size of 12 nm and well distributed on the SBA-15. After modified with sucrose the materials remaining stable, which has a two-dimensional hexagonal (p6mm) structure, high specific surface area, and large pore volume (up to 1.82 cm3.g−1). The degradation of MB was evaluated under visible light irradiation using UV-Vis spectroscopy. Catalytic activity showed efficiencies of 52.9; 70.2; and 21.1% for SBA-15, Fe2O3/SBA-15, and sucrose-modified Fe2O3/SBA-15 respectively. Sucrose-modified Fe2O3/SBA-15 has the lowest efficiency, which probably occurs due to the presence of pore-blocking and the formation of micropores on the external pore. The modification with sucrose has the advantage of producing a high surface area even though there is a catalytic center due to partial decomposition which causes a decrease in the efficiency of degradation of MB. All materials provide a high micro surface area so that they can be further adapted and can be widely applied to many potential applications as both catalyst support and an adsorbent. 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). 
Direct Synthesis of Highly Crystalline ZSM-5 from Indonesian Kaolin Hartati Hartati; Alfa Akustia Widati; Tanti Kartika Dewi; Didik Prasetyoko
Bulletin of Chemical Reaction Engineering & Catalysis 2017: BCREC Volume 12 Issue 2 Year 2017 (August 2017)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.12.2.809.251-255

Abstract

Direct synthesis of ZSM-5 from Indonesian kaolin without calcination for the formation of metakaolin was done through the addition of an alkaline solution (sodium fluoride and sodium hydroxide) and the fusion using sodium hydroxide. Crystallization was conducted through hydrothermal method at 80 °C for four days. XRD diffractogram and FTIR spectra showed that the addition of sodium fluoride solution in the ratio Si/Al = 100 could produce highly crystalline ZSM-5, whereas the use of a sodium hydroxide solution and fusion process did not produce the crystalline ZSM-5. 
Direct Synthesis of Sodalite from Indonesian Kaolin for Adsorption of Pb2+ Solution, Kinetics, and Isotherm Approach Tri Wahyuni; Didik Prasetyoko; Suprapto Suprapto; Imroatul Qoniah; Hasliza Bahruji; Ahmad Anwarud Dawam; Sugeng Triwahyono; Aishah Abdul Jalil
Bulletin of Chemical Reaction Engineering & Catalysis 2019: BCREC Volume 14 Issue 3 Year 2019 (December 2019)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.14.3.2939.502-512

Abstract

Indonesian kaolin was used as precursor for synthesis of sodalite. Synthesis parameters were optimized by varying the Si/Al ratios, stirring and aging conditions, and water composition. X-ray diffraction (XRD), Fourier Transform Infra Red (FTIR), Scanning Electron Microscope-Energy Dispersive Xray (SEM-EDX), and Particle Size Analyzer (PSA) were used to characterize sodalite. The potential of sodalite as adsorbent for heavy metal Pb2+ ions removal from waste water was investigated in this work. The uptake adsorption capacities of sodalite was 90-100 mg/g from synthesized sodalite crystallized for 24 and 48 hours, and commercial silica. The kinetic of Pb2+ adsorption was a pseudo second order reaction and the adsorption coefficients was followed Langmuir adsorption isotherm.
PREPARATION, CHARACTERIZATION AND CATALYTIC ACTIVITY OF CuO/TS-1 ON BENZENE HYDROXYLATION REACTION Ediati, Ratna; Fansuri, Hamzah; Prasetyoko, Didik
Makara Journal of Science Vol. 15, No. 2
Publisher : UI Scholars Hub

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

CuO/TS-1 catalysts have been prepared and tested in the benzene hydroxylation. TS-1 was synthesized by hydrothermal method, while CuO/TS-1 was prepared by impregnation method using Cu(NO)2.3H2O as precursor. Catalysts were characterized by using X-ray diffraction (XRD), infrared spectroscopy (IR), and N2 adsorption-desorption techniques. The catalytic activity was tested in the hydroxylation reaction of benzene. The products were analyzed using gas chromatography. Catalyst characterization by XRD and IR techniques have showed that the catalyst structure was a MFI type of zeolite. XRD pattern have showed the orthorombic structure and indicated the presence of CuO aggregation. The results of the pyridine adsorption have found that the acidity of TS-1 and CuO/TS-1 were a Lewis acid and it’s increased with an increasing amount of CuO loading. The results of nitrogen adsorption analysis have showed decreasing of surface areas of catalyst with increasing amount of CuO loading. The optimum conditions of benzene hydroxylation was observed by 1%CuO/TS-1 catalyst at 70 °C, reaction time 2 h and acetic acid as the solvent yielded 27.6% of phenol with phenol selectivity was 75.5%
Workshop Fillet, Produksi Gelatin Ikan, dan Pembentukan Kawasan Binaan ITS di Pesisir Pacitan Selatan Atmaja, Lukman; Santoso, Mardi; Prasetyoko, Didik; Kholis, Muhammad Nur
Sewagati Vol 8 No 1 (2024)
Publisher : Pusat Publikasi ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j26139960.v8i1.77

Abstract

Nelayan yang memakai pelabuhan Tamperan Pacitan ini ada yang masuk dalam katagori nelayan tradisional lokal dan ada nelayan-nelayan yang lebih modern dan pendatang. Hasil tangkapan laut normalnya dijual ditempat sebagai ikan segar, dikirim ke kota-kota lain, dan dijual ke industri perikanan lokal untuk dijadikan makanan olahan. Ikan segar yang dijual tersebut sebenarnya bisa dijadikan fillet dengan harga jual lebih tinggi, sedangkan industri perikanan tadi telah menghasilkan limbah perikanan yang sebenarnya bisa dikonversi menjadi gelatin yang luas dipakai di industri-industri makanan dan farmasi. Kegiatan utama pengabdian masyarakat ini adalah a) workshop pembuatan fillet, b) ekstraksi gelatin dari limbah perikanan, dan c) pembentukan Kawasan Binaan ITS. Kegiatan ini diikuti hingga tuntas oleh 20 UMK yang berlokasi di pesisir selatan Kabupaten Pacitan. Pada akhir kegiatan, telah dihasilkan fillet dengan baik. Selanjutnya juga telah dihasilkan gelatin dan telah didemonstrasikan kemanfaatan gelatin dalam industri makanan skala rumah tangga, dan c) terdapat 19 UMK yang telah bersedia untuk mengikuti kegiatan lanjutan dan bergabung dalam Kawasan Binaan ITS untuk tahun 2021 – 2022 – 2023.
PENATAAN PKL BEBAS BORAKS DAN FORMALIN MENUJU PRODUK UNGGULAN SEHAT DAN HIGIENIS Rosyidah, Afifah; Purwanti, Endang; Hartanto, Djoko; Murwani, Irmina Kris; Prasetyoko, Didik; Ediati, Ratna
Qardhul Hasan: Media Pengabdian kepada Masyarakat Vol. 3 No. 2 (2017): OCTOBER
Publisher : Universitas Djuanda

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (231.245 KB) | DOI: 10.30997/qh.v3i2.944

Abstract

PKL STEPULATION OF FREE STORE BORAKS AND FORMALIN TOWARDS HEALTHY AND HYGIENIC SUPERIOR PRODUCTS ABSTRACT The Community service is focused on getting healthy and hygienic food around the campus. In the early stages, the identification of food sold in street vendors around the campus, whether it contains borax and or formalin. If the results of identification are still found foods containing borax and or formalin, then counseling and guidance and given about alternative materials borax and or formalin, which is safe for health. 40 food samples were random taken from street vendors around the campus. The content of formalin and borax is analyzed qualitatively and quantitative using test equipment’s. The results showed that there were 3 food samples from street vendors serving meatballs and noodles containing formalin and 5 food samples from street vendors serving food containing borax.Keywords: borax, formalin, qualitative analysis. ABSTRAK Layanan Masyarakat difokuskan untuk mendapatkan makanan sehat dan higienis di sekitar kampus. Pada tahap awal, identifikasi makanan yang dijual oleh PKL di sekitar kampus, apakah mengandung boraks dan atau formalin. Jika hasil identifikasi masih ditemukan makanan yang mengandung boraks dan atau formalin, maka konseling dan bimbingan dan diberikan tentang bahan alternatif boraks dan atau formalin, yang aman untuk kesehatan. Sebanyak 40 sampel makanan diambil secara acak dari pedagang kaki lima di sekitar kampus. Kandungan formalin dan boraks dianalisis secara kualitatif dan kuantitatif dengan menggunakan alat uji. Hasil penelitian menunjukkan bahwa ada 3 sampel makanan dari pedagang kaki lima yang menyajikan bakso dan mie yang mengandung formalin dan 5 sampel makanan dari pedagang kaki lima yang menyajikan makanan yang mengandung boraks.
Characterization and Kinetic Study of Methylene Blue Photocatalytic on ZnO/ZSM-5 Tehubijuluw, Hellna; Souhoka, Fensia Analda; Kusumawati, Yuly; Prasetyoko, Didik; Subagyo, Riki; Nugraha, Reva Edra; Jalil, Aishah Abdul
Indonesian Journal of Chemical Research Vol 11 No 2 (2023): Edition for September 2023
Publisher : Jurusan Kimia, Fakultas Sains dan Teknologi, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598//ijcr.2023.11-hln

Abstract

Photodegradation of organic pollutants depends significantly on the structure of metal oxide-based semiconductor photocatalysts. ZnO/ZSM-5 has shown the potential to significantly improve its photocatalytic efficiency for removing waterborne pollutants. ZnO/ZSM-5 has been reported to be an active catalyst for degrading methylene blue. These methods commonly involve various catalytic reactions, with the Langmuir-Hinshelwood process being used to describe the reaction kinetics. A kinetic study on the photocatalytic degradation of methylene blue using ZnO/ZSM-5 was conducted under UV-LED lamp irradiation. ZnO/ZSM-5 was characterized using XRD, SEM, and N2 adsorption-desorption, and it was prepared via the impregnation method. The interaction between ZnO/ZSM-5 and methylene blue solutions over a period of 30 to 180 minutes was monitored using a UV-Vis spectrophotometer. The photocatalytic degradation of methylene blue followed first-order rate kinetics. The Langmuir-Hinshelwood (L-H) kinetic analysis revealed that the photocatalytic reaction constant (kc) was 4.207 L.mg-1. menit-1, and the Langmuir-Hinshelwood constant (K) was 261.509 L.mg-1.
Co-Authors Abdul Hamid Abdul Hamid Abdul Hamid Abdulloh Abdulloh Adi Setyo Purnomo Afifah Rosidah Afifah Rosyidah Ahmad Anwarud Dawam Ahmad Anwarud Dawam Ahmad Anwarud Dawam Ahmad, Shahrul Nizam Aishah Abdul Jalil Aishah Abdul Jalil Aishah Abdul Jalil Aishah Abdul Jalil Alfa Akustia Widati Alya Awinatul Rohmah Amalia Putri Purnamasari Amin Jakfar, S.T.,M.T., Lukman Hadiwijaya, S.T.,M.T. Amirul Mukminin Anil Kumar Anal Anis Farika Anis Farika, Anis Arief Fadlan Arizal Firmansyah Asranudin Asranudin, Asranudin Badzlin Nabilah Bayu Wiyantoko Cepi Kurniawan Che Ku Nor Liana Che Ku Hitam Cholifah Endah Royani Cicik Herlina Yulianti Desy T. Kusumaningtyas Desy Tri Kusumaningtyas Dety Oktavia Sulistiono Dewi, Nita Safira Didi Dwi Anggoro Djoko Hartanto Djoko Hartanto Djoko Hartanto Dyah Ayu Fatmawati Dyah Fitasari Eka Pratiwi Yuniarti Eka Putra Ramdhani Eko Santoso Endang Purwanti Endud, Salasiah F Widhi Mahatmanti Farhanah Thalib Fensia Analda Souhoka Firda, Putri Bintang Dea Futri Wulandari H. Holilah Hadi Nur Hadi Nur Hadi Nur Hamzah Fansuri Haq, Ismi Arinal Harjito - Harjito Harjito Harmami Harmami Hartati Hartati Hartati Hartati Hasliza Bahruji Hasliza Bahruji Hasliza Bahruji Hasliza Bahruji Hellna Tehubijuluw Hendro Nurhadi Ika Diah Rahmawati Ike Dayi Febriana Imroatul Qoniah Imroatul Qoniah Imroatul Qoniah Imroatul Qoniah Imroatul Qoniah Imroatul Qoniah Izzah, Adiba Naila Kris Murwani, Irmina Kurniawati, Puji Kurniawati, Puji Kusumawati, Yuly Le Monde, Brilliant Umara Leaw Wai Loon Lely Dwi Astuti Lisa Amalia Suryana Lukman Atmaja Mardi Santoso Maria Ulfa Maria Ulfa Maria Ulfa Meiske S Sangi Meyga E. F. Sari Meyga Evi Ferama Sari Mohammad Abdullah Mudasir Mudasir Muhammad Lukman Hakim Muhammad Nur Kholis Muhammad Nur Kholis Mulyatun Mulyatun Naimatul Khoiroh Nanik Siti Aminah Nanik Wijayati Neneng Ayunanda Novesar Jamarun Nuni Widiarti Nur, Hadi Nurdiani, Maulida Nurul - Widiastuti Pemta Tiadeka Puji Kurniawati Qurrota A’yuni R.Y. Perry Burhan, R.Y. Perry Rahayu, Endah Fitriani Rakhmadi Harsanto Ramli, Zainab Ratna Ediati Ratna Ediati Reva Edra Nugraha Safa Annissa Novianti Salasiah Endud Samuel Budi Wardhana Samuel Budi Wardhana Kusuma Santi Wulan Purnami Sirly Bifadilatur Romaniyah Siti Maryam Subagyo, Riki Suci Indrayani Sugeng Triwahyono Sugeng Triwahyono Sugeng Triwahyono Sugeng Triwahyono Suprapto Suprapto Suprapto Suprapto Suprapto Suprapto Suprapto Suprapto Suprapto Suprapto Suprapto Suprapto Suprapto Suprapto Suprapto Suprapto Suprapto Suprapto Suprapto Suprapto Suprapto Suprapto Suprapto, Suprapto Suprapto, Surapto Susi Nurul Khalifah Syafsir Akhlus Syafsir Akhlus, Syafsir Tanti Kartika Dewi Taufiq Rinda Alkas Teguh Endah Saraswati Tikha Reskiani Fauziah Titie Prapti Oetami Titie Prapti Oetami Tri Ana Mulyati Tri Esti Purbaningtias Tri wahyuni Tri Wahyuni Tri Wahyuni Triyono Triyono Triyono Triyono Wahyu Bambang Widayatno Wega Trisunaryanti Wega Trisunaryanti Wega Trisunaryanti Wijianto, Wijianto Wiyantoko, Bayu Wiyantoko, Bayu Yatim Lailun Ni’mah Yoshifumi Chisaki Yulinar Dwi Nur Azizah Yusuf Muhammad Zein Yusuf Muhammad Zein Yuvita Eka Pertiwi Zahrotul Istiqomah Zainab Ramli Zainab Ramli Zainab Ramli Zainab Ramli Zakaria, Zaki Yamani Zeni Rahmawati Zetra, Yulfi