Article Per Year (5 Year)
p-Index From 2019 - 2024
1.376
P-Index
This Author published in this journals
All Journal Jurnal Ilmu Dasar BERKALA SAINSTEK Bulletin of Chemical Reaction Engineering & Catalysis Warta Pengabdian Lembaran Publikasi Minyak dan Gas Bumi Indonesian Chimica Letters
Yudi Aris Sulistiyo, Yudi Aris
Jurusan Kimia, Fakultas Matematika Dan Ilmu Pengetahuan Alam, Universitas Jember
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Earth & Planetary Sciences Education Energy Environmental Science Mathematics Physics

Published : 10 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 10 Documents
Search

 1 
UJI AKTIVITAS KATALIS CLAY TERMODIFIKASI CU DALAM REAKSI HIDRORENGKAH SENYAWA 1-OKTADEKANOL Lestari, Wiwit Puji; Purwo Handoko, Donatus Setyawan; Sulistiyo, Yudi Aris
Lembaran publikasi minyak dan gas bumi Vol 53, No 1 (2019)
Publisher : PPPTMGB "LEMIGAS"

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (564.475 KB) | DOI: 10.29017/LPMGB.53.1.367

Abstract

Telah dilakukan proses perengkahan secara katalitik senyawa 1-oktadekanol dengan katalis clay termodifikasi Cu. Hasil perengkahan dianalisis dengan menggunakan X-ray Flouresence (XRF), XRD, adsorpsi piridin dan BET. Katalis dimasukkan dan dipanaskan dalam tabung reaktor, umpan dimasukkan dan dipanaskan pada tabung terpisah sampai berubah menjadi uap sambil dialiri gas H2. Cairan hasil perengkahan selanjutnya dianalisis dengan menggunakan GC-MS. Hasil karakterisasi menunjukkan penurunan rasio Si/Al dari katalis clay menjadi clay termodifikasi Cu, sedangkan % kandungan Cu dalam katalis meningkat sebesar 7.39%. Struktur kristal kedua katalis hampir sama, namun muncul beberapa puncak baru yang menunjukkan bahwa logam Cu berhasil dimodifikasikan. Keasaman katalis muncul pada daerah 1638,6 dan 1627,03 cm-1 yang menunjukkan jenis asam bronsted. Luas permukaan dan volume pori katalis mengalami kenaikan walau sangat kecil yaitu berturut-turut 45.719 dan 0.009. Aktivitas katalis baik katalis clay dan clay termodifikasi Cu kurang baik, dimana produk yang dihasilkan C12 lebih banyak daripada C6-C12.
Variasi Penambahan CTABr Sebagai Template Terhadap Pembentukan TiO2 Anatase Dari Senyawa Natrium Titanat dan Aplikasinya Sebagai Fotokatalis Widya Puspita Dewi; Tanti Haryati; Suwardiyanto Suwardiyanto; Yudi Aris Sulistiyo; Novita Andarini
BERKALA SAINSTEK Vol 7 No 2 (2019)
Publisher : Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/bst.v7i2.12857

Abstract

TiO2 anatase mesopori (ukuran pori 2-50 nm) memiliki aktivitas fotokatalitik yang besar. Metode sintesis kimia padat dapat digunakan sebagai alternatif untuk memperoleh TiO2 anatase dari natrium titanat dengan menggunakan prekursor yang murah berupaTiO2 rutile komersial. Surfaktan CTABr (Cetyltrimethylammonium Bromide) mampu menghasilkan TiO2 anatase mesopori dengan kemampuannya sebagai template atau agen pembentuk pori. Penelitian ini bertujuan mengetahui pengaruh variasi penambahan CTABr terhadap distribusi ukuran pori, volume total pori, luas permukaan TiO2 dan dan aktivitas fotokatalitik TiO2 hasil sintetis. Sintesis dilakukan menggunakan metode reaksi kimia padat dengan penambahan variasi perbandingan mol CTABr dan tanpa penambahan CTABr sebagai pembanding. Karakterisasi menggunakan XRD (X- Ray Powder Difraction), SEM (Scanning Electron Microscopy) dan Gas Sorption Analyer (GSA) untuk mengetahui struktur, morfologi dan sifat pori TiO2. TiO2 anatase mesopori hasil sintesis diaplikasikan sebagai fotokatalis dalam mendegradasi metilen biru. Hasil penelitian ini menunjukkan bahwa TiO2 anatase mesopori berhasil didapatkan dengan morfologi partikelnya berbentuk seperti balok, sisi tidak seragam serta ukuran partikel berkisar 200-500 nm. Variasi penambahan CTABr tidak memberikan pengaruh yang signifikan terhadap distribusi ukuran pori, volume total pori, luas permukaan dan aktivitas fotokatalitik dari TiO2 anatase mesopori, dengan hasil distribusi pori mayoritas pada 2 nm dan aktivitas fotokatalitik sekitar 77%
Sintesis Silika Gel Berbasis Fly Ash Batu Bara PLTU Paiton Sebagai Adsorben Zat Warna Rhodamin B Siti Aisah; Z. Zulfikar; Yudi Aris Sulistiyo
BERKALA SAINSTEK Vol 6 No 1 (2018)
Publisher : Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/bst.v6i1.7761

Abstract

Abu terbang batu bara dengan prosentase kandungan SiO 2 telah berhasil digunakan sebagai bahan baku pembuatan Silika Gel. Karakteristik silika gel diketahui dengan munculnya gugus fungsi silanol dan siloksan dengan FTIR, struktur kristal tak beraturan (amorf) dengan XRD, bentuk partikel bola (spherical) dan analisis unsur dengan EDX. Silika gel yang dihasilkan masih mengandung sedikit pengotor oksida alumina dan oksida natrium. Pengujian kapasitas adsorpsi Rhodamin-B silika gel lebih besar dibandingkan abu terbang dengan model adsorsi keduanya mengikuti model isotermal Langmuir dengan konsentrasi optimum pada 200 ppm. Kinetika adsorpsi mengikuti model Pseudo Second Order dimana laju adsorpsi silika gel sedikit lebih tinggi dibanding abu terban, tepai perbedaaanya tidak signifikan.Kata Kunci: zat warna Rhodamin B, silika gel, abu terbang batubara, Isotermal adsorpsi, kinetika adsorpsi
Synthesis zeolitic Imidazolate Framework-8 (Zif-8) In Solvothermal: The Effect Comparison of Metal-Ligand Muhammad Nadjib; Ratna Ediati; Yudi Aris Sulistiyo; Lutfiatun Nadifah
Jurnal ILMU DASAR Vol 17 No 1 (2016)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (214.748 KB) | DOI: 10.19184/jid.v17i1.2674

Abstract

Synthesis of ZIF-8 (zeolitic Imidazolate Frameworks-8) have been successfully carried out by the reaction of zinc nitrate and 2-methylimidazolate in DMF (N'N-dimethylformamide) solvent at a temperature of 120 °C for 24 hours. Synthesis of ZIF-8 has been conducted five times with variations molar ratio of metal (Zn2+):ligand (MeIM) consecutive 1:1; 1:1.5; 1:2; 1:2.5 and 1:3 to study the influence of metal-ligand ratio of the crystallinity and morphology of ZIF-8 that was produced. The results of characterization by X-ray diffraction, FTIR and SEM show that ZIF-8 is synthesized with a ratio of metal: ligand = 1:2 showed the highest crystallinity and has the most irregular surface morphology with form box. Keywords: ZIF-8, solvotermal, metal/ligand ratio 
Silica Gels from Coal Fly Ash as Methylene Blue Adsorbent: Isotherm and Kinetic Studies Yudi Aris Sulistiyo; Nida Andriana; Bambang Piluharto; Zulfikar Zulfikar
Bulletin of Chemical Reaction Engineering & Catalysis 2017: BCREC Volume 12 Issue 2 Year 2017 (August 2017)
Publisher : Department of Chemical Engineering - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (16.758 KB) | DOI: 10.9767/bcrec.12.2.766.263-272

Abstract

A lot of dye pollutants were released in the aquatic environment as waste from industrial coloring process. This research aimed to study silica gels (SG) as a potential adsorbent to remove the dyes. The SG can be synthesized from coal fly ash (FA), which is industrial solid waste rarely utilized, using the sol-gel method. Its properties were then characterized by FTIR, XRD, SEM, and isothermal ads-des N2. As a result, FTIR spectra and XRD diffractogram exhibited the successfully SG synthesized from FA with the amorphous structure. The image analysis using SEM demonstrated that SG particles are spherical. The isotherm type, based on isotherm ads-des N2, is type II without hysteresis loop which represents the nonporous material SG with the surface area and pore diameter of 25.977 m2/g and 1.52 nm, respectively. The adsorption capacity performance of SG to remove methylene blue (MB) as a basic dye is 62.70 % which is higher than FA, following Langmuir isotherm adsorption model. The kinetics of adsorption rate of SG are based on the pseudo second order models accelerated by 3.37 times faster than FA. 
Biobriket Arang Sekam Padi sebagai Sumber Energi Terbarukan untuk Aplikasi Pandai Besi Wenny Maulina; Yudi Aris Sulistiyo; Endhah Purwandari
Warta Pengabdian Vol 14 No 4 (2020): Warta Pengabdian
Publisher : LP2M Universitas Jember

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

Abstract

Sumber energi terbarukan berbasis biomassa merupakan sumber daya potensial menggantikan kayu bakar atau batu bara yang persediannya semakin menipis sebagai bahan bakar industri pandai besi. Salah satu potensi biomassa adalah sekam padi yang dapat dijadikan bahan baku pembuatan biobriket. Oleh karena itu, tujuan pelaksanaan kegiatan ini adalah untuk menghasilkan biobriket arang sekam padi sebagai bahan bakar alternatif pada industri pandai besi. Kegiatan ini dilakukan dalam beberapa tahapan yaitu 1) pembuatan alat pencetak yang mampu menghasilkan 4 buah biobriket sekali produksi, 2) pembuatan biobriket arang sekam dan diuji sifat dan karakteristiknya, dan 3) pelatihan pembuatan dan penerapan langsung biobriket untuk proses pemanasan besi pada industri pandai besi. Karakteristik biobriket arang sekam diuji berdasarkan nilai kapasitas kalor, kadar air, kadar abu, dan volatile matter berturut–turut adalah 3709,47 kalori per gram; 4,27%; 3,93%; dan 59,20%. Hasil pengujian pembakaran secara langsung menghasilkan nyala api berwarna biru dengan suhu berkisar 533,8 – 704,3 oC. Hasil biobriket telah diimplementasikan dan mampu diterima untuk menggantikan kayu bakar yang selama ini digunakan pada sentra pengrajin pandai besi di Desa Suger Kidul, Kec. Jelbuk, Kab. Jember.
Synthesis of Zeolite Y from Lapindo Mud with the Comparative Variation of the Weight of NaOH/Mud and Molar SiO2/Al2O3 Novita Andarini; Tanti Haryati; Suwardiyanto Suwardiyanto; Yudi Aris Sulistiyo
Indonesian Chimica Letters Vol. 1 No. 1 (2022)
Publisher : Department of Chemistry, Faculty of Mathematics and Natural Sciences, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (514.618 KB) | DOI: 10.19184/icl.v1i1.5

Abstract

Lapindo mud is a waste that can be used as a zeolite formation material. Zeolite is a mineral there are silica and alumina. The zeolite synthesized was the zeolite Y. The synthesis of zeolite Y is carried out the melting method followed by hydrothermal process. The ratio of NaOH/sludge weight varied the weight of NaOH added to the sludge weight which was made constant, there were 1.1 gram of NaOH/1 gram of sludge; 1.3 gram of NaOH/1 gram of sludge; 1.5 gram of NaOH/1 gram of sludge; and 1.7 gram of NaOH/ 1 gram of sludge. The sludge was pretreated using HCl in the leaching process and NaOH for smelting. The melted sludge from the four variations was characterized using XRF. The results of characterization are used as the basis for determining the mass of SiO2 and NaOH that need to be added in the synthesis. The melted sludge was added with water, SiO2, and NaOH and cured for 48 hours at room temperature. The mixture that has been brooded is then filtered, the result of the filtering is the filtrate of sodium silicate and sodium aluminate solution. The filtrate was hydrothermal 100-105 °C for 24 hours. The resulting crystals were filtered and neutralized using aquademine. The resulting synthetic zeolite was white, then characterization was carried out using XRF and XRD. The characterization results on the variation of NaOH/sludge weight ratio could be seen from the XRF results. Zeolite Y varies the weight ratio of NaOH/sludge based on the character of the best zeolite produced at a weight ratio of NaOH/sludge 1.5.
Solid State Transformation of TiO2 Rutile and its Photocatalytic Activity Yudi Aris Sulistiyo; Wilda Kamila; Novita Andarini; Suwardiyanto Suwardiyanto; Gagus Ketut Sunnardianto; Tanti Haryati
Indonesian Chimica Letters Vol. 1 No. 2 (2022)
Publisher : Department of Chemistry, Faculty of Mathematics and Natural Sciences, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (716.495 KB) | DOI: 10.19184/icl.v1i2.205

Abstract

Transformation phase TiO2 Rutile was conducted to improve the photocatalytic activity. This study evaluated the transformation phase of TiO2 rutil using solid state rection method and tested for gycerol conversion reaction. a semiconductor material that can be applied for glycerol conversion. The solid state reaction using a mixture of TiO2 Rutile and sodium titanate in mole rasio 1:4 that was heated in 750 oC. XRD analysis evaluated the transformation phase of the solid state reaction product, while band gap energi was calculated following UV-Vis diffuse reflectance data. The photoactivity of glycerol was exposed by UV-Light in various time (5, 10, 15 h) that of the liquid product was analyzed by gas chromatography. Solid state reaction transformed TiO2 rutil to polymorph structure (TiO2 rutile, TiO2 anatase, and sodium titanate Na4O12Ti5). The band gap energy of the product was 3.2 eV. The optimum photocatalytic activity was 62.7% in glycerol concentration 0.25 M for 15 h time reaction.
Hydrothermal Synthesis of Hematite (α-Fe2O3) from Indonesia Iron Sand Furqonul Hakin Al Hadi; Tanti Haryati; Novita Andarini; Suwardiyanto; Yudi Aris Sulistiyo
Indonesian Chimica Letters Vol. 2 No. 1 (2023)
Publisher : Department of Chemistry, Faculty of Mathematics and Natural Sciences, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/icl.v2i1.367

Abstract

High potency of Indonesian iron sand can be optimized by transforming to valuable iron oxide product namely Hematite (α-Fe2O3). Hydrothermal synthesis was carried out to transform iron oxide phase to hematite that can be analyzed by x-ray diffraction method. Utilization of ion sand as raw material produced multyphase in product reaction, while  the usage of Fe(OH)x that extracted from iron sand attained high purity of hematite. The best conditions of reaction were at 160 oC for 24 h. Higher temperature and longer time reaction transformed α- α-Fe2O3 to be γ-Al2O3 and Fe3O4 as more stable phase.
Synthesis Zeolite Y From Lapindo Mud With Variations Filling Autoclave And Ratio Molar Si/Al Novita Andarini; Deys Sya’fatul Maziyyah; Tanti Haryati; Yudi Aris Sulistiyo; S. Suwardiyanto
BERKALA SAINSTEK Vol 11 No 3 (2023)
Publisher : Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/bst.v11i3.39422

Abstract

Lapindo mud contains Silicate (SiO2), and Aluminum oxide (Al2O3) that can be utilized to synthesize zeolite Y. Zeolite Y was synthesized from Lapindo mud via the smelting and hydrothermal method, respectively. The thermal activation of Lapindo mud was achieved by leaching smelting at 550oC for 2 hours with NaOH to achieve thed desire adding SiO2, NaOH and aging for 48 hours. The effects of various parameters on the synthesis were investigated. The samples were characterized with X-ray Fluorescence (XRF), X-Ray Diffraction (XRD), Fourier Transformation Infrared Spectroscopy (FTIR) and Gas Sorption Analyzer (GSA). Zeolite Y with high crystallinity was synthesized under optimized conditions, such as filling autoclave 90% and a SiO2/ Al2O3 molar ratio of 15.
Co-Authors Bambang Piluharto Deys Sya’fatul Maziyyah Endhah Purwandari Furqonul Hakin Al Hadi Gagus Ketut Sunnardianto Lestari, Wiwit Puji Lutfiatun Nadifah Nadjib, Muhammad Nida Andriana Novita Andarini Purwo Handoko, Donatus Setyawan Ratna Ediati S. Suwardiyanto Siti Aisah Suwardiyanto Suwardiyanto Suwardiyanto Tanti Haryati Wenny Maulina, Wenny Widya Puspita Dewi Wilda Kamila Zulfikar Zulfikar