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All Journal Jurnal Penelitian Saintek Jurnal Ilmiah Farmasi EKSAKTA: Journal of Sciences and Data Analysis Jurnal Teknoin Reaktor Jurnal Ilmu Dasar Jurnal technoscientia Bulletin of Chemical Reaction Engineering & Catalysis Journal of Mathematical and Fundamental Sciences Science and Technology Indonesia Indonesian Journal of Chemistry Molekul: Jurnal Ilmiah Kimia ASEAN Journal of Chemical Engineering Acta Chimica Asiana JURNAL TEKNOLOGI TECHNOSCIENTIA IJCR (Indonesian Journal of Chemical Research) Jurnal Pijar MIPA Khazanah: Jurnal Mahasiswa Bulletin of Chemical Reaction Engineering & Catalysis

Is Fatimah

Department Of Chemistry, Islamic University Of Indonesia, Jl. Kaliurang KM 14.5 Sleman Yogyakarta 55584

Author-ID : 264427

Religion Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Physics Public Health Social Sciences

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NOx REDUCTION BY ADSORPTION AND HYDROGEN-SELECTIVE CATALYTIC REDUCTION USING Pt-ZEOLITE : PART I. SPECTROSCOPIC STUDY AND EFFECT OF TEMPERATURE TO ACTIVITY Fatimah, Is; Hidayat, Arif
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscentia Vol 1 No 1 Agustus 2008
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

In this paper, spectroscopic investigation on NOx adsorption and Hydrogen- Selective Catalytic Reduction (H-SCR) by using Pt-zeolite and also study on the effect of temperature to the % activity of reduction are presented. FTIR and UV-Visible spectro-photometry reveal the chemisorption occure during NOx adsorption by Pt-zeolite. Fur-thermore in the effect of temperature study, it concluded that both of processes significantly affected by temperature. Arrhenius model is used to predict this effect and the result show that activation energy of NOx reduction in H-SCR system is 0.2640 Joule/mol and adsorption energy is 4.0617 Joule/mol.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/technoscientia.v1i1.378

UJI SINERGISITAS ANTIOKSI DAN EKSTRAK KLOROFORM DAUN TEH (Camellia Sinensis) DENGAN -TOKOFEROL MENGGUNAKAN PENDEKATAN KEMOMETRI Is Fatimah; Jaka Nugraha
Jurnal Ilmiah Farmasi Vol. 1 No. 2 (2004)
Publisher : Universitas Islam Indonesia

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ABSTRACTAim of this research is to know factor influenced to antioxidative activity of chloroform extract oftea leaf ( Camellia sinensis) with -tocopherol in peanut oil system. Research was done by takedata of peroxide value, tiocyanic acid value dan barbituric acid value of the system addedantioxidant at various concentration. Variance analysis was investigated to the data by interpretingfactors consist of time, extract concentration and -tocopherol concentration followed bydetermination of regression model. Result showed that time, extract concentration and -tocopherolconcentration influence to the antioxidative activity and there was interaction effect of the factors.Optimum condition gained at time of 60 minutes, -tocopherol concentration of 110 ppm andextract concentration of 100 ppm. The model resulted from this analysis can be used to predictsynergistic effect between chloroform extract of tea leaf with -tocopherol.Key word: antioxidant, synergistic effect, extraction

UTILISASI TiO2-ZEOLIT DAN SINAR UV UNTUK FOTODEGRADASI ZAT WARNA CONGO RED Karna Wijaya; Eko Sugiharto; Is Fatimah; Sri Sudiono; Diyan Kurniaysih
Teknoin Vol. 11 No. 3 (2006)
Publisher : Faculty of Industrial Technology Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/.v11i3.88

An investigation of Congo Red photodegradation using TiO2-Zeolite and UV radiation was performed. TiO2-Zeolite was prepared by dispersing of pillaring solution (in form oligocations of titanium) into suspension of Zeolite. The suspension was stirred and then filtered to separate the solid phase from the filtrate. the solid phase was calcined by microwave oven at 800 Watt for 5 minutes to convert the oligocations into its oxide forms. The calcined product and unmodified Zeolite were characterized using x-ray diffractometry, FT-IR spectrophotometry, X-ray fluorescence and gas sorption analysis to determine their physicochemical properties. Photocatalytic activity of TiO2-Zeolite was tested on Congo Red using following method: 50 mg of Zeolite was dispersed into 25 mL of 10-4 M Congo Red. The dispersion was irradiated using 365 nm UV light at room temperature on various irradiation times, i.e. 10,20,30,40 and 60 minutes. At certain irradiation time, the dispersion was filtered and the filtrate was then analyzed its concentration using UV-vis spectrophotometry method. Characterization results exhibited that the formation of TiO2 on internal as well as external surfaces of Zeolite could not be detected with x-ray diffractometry and FT-IR spectrophotometry, however determination of titanium using x-ray fluorescence analysis on the calcined product showed that the concentration of titanium was much higher than Zeolite (0.22% on Zeolite and 12.08% on TiO2-Zeolite). Gas sorption analysis result indicated that the the calcination resulted in the increase of specific surface area (16,31 m2/g on Zeolite and 100,96 m2/g on TiO2-Zeolite) as well as total pore volume of calcined product (13,34 mL/Å/g on Zeolite and 57,54 mL/Å/g on TiO2-Zeolite). Photocalytic activitiy test result conducted on that dye showed that ca 99 % of Congo Red was degraded by the system TiO2-Zeolite after UV irradiation for 60 minutes.Keywords: TiO2-Zeolite, photocatalytic, UV-irradiation, Congo Red

SINTESIS TIO2/ZEOLIT SEBAGAI FOTOKATALIS PADA PENGOLAHAN LIMBAH CAIR INDUSTRI TAPIOKA SECARA ADSORPSI-FOTODEGRADASI Is Fatimah; Karna Wijaya
Teknoin Vol. 10 No. 4 (2005)
Publisher : Faculty of Industrial Technology Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/.v10i4.102

Research on synthesis of TiO2/Zeolite and Its application as photocatalyst in Tapioca Starch Wastewater Treatment has been investigated. Research conducted by synthesis of TiO2/zeolite by ion exchange process to exchangeable cations in natural zeolite by Ti4+ solution at varied concentration of 0,12 M, 0, 24 M and 0,48 M followed by oxidation and calcination process, followed characterization by analysis of Ti content, XRD measurement, specific surface area measurement and photoactivity toward methylene blue photodegradation. TiO2/zeolite photoactivity toward photodegradation of tapioca starch wastewater was tested by exposing photocatalyst-wastewater suspension with UV light in varied time and ratio of photocatalyst weight: volume of wastewater.Result of research showed that TiO2/zeolite has a photoactivity to decrease COD and cyanide content of tapioca starch wastewater. The photoactivity related to specific surface area and photoactivity toward methylene blue photodegradation physical character and also photodegradation time. The highest photoactivity reached by TiO2/zeolite-1 which is resulted by Ti4+concentration of 0,12 M in the ion exchange process to natural zeolite.Keywords : zeolite, photocatalyst, wastewater quality

SITRONELAL CYCLE-HYDROGENATION TANDEM CREATED ZrO MONTMORILLONIT WITH VARIATION METHOD REACTION Is Fatimah; Septian Perwira Yudha; Dwiarso Rubiyanto; Thorikul Huda
Jurnal Penelitian Saintek Vol 18, No 2: Oktober 2013
Publisher : Institute of Research and Community Services, Universitas Negeri Yogyakarta

Tandem cyclization reaction towards menthol-citronellal hydrogenation reactions through one-step reaction with a variety of methods using pillared montmorillonite catalyst ZrO2 (Zr-MMT) have been done. The research aimed to determine the effectiveness of Zr-MMT catalyst in the reaction process with two different methods; first method comprises reacting flow system to citronellal - catalyst mixture after reflux with pressure and flow H2 of 3 kPa, and the other method consists of a flow system to the citronellal -catalyst mixture at the temperature of 200o C with H2 flow pressure of 2 kPa. Reaction products were analyzed using GC-MS to determine the total conversion and product yield of menthol. The results showed that the different methods give different reaction mechanisms significantly. The first method gives almost to 99% conversion of citronellal with major products of isomenthone and isopulegol while the second method give the conversion of 5.18% with 0.39% selectivity to menthol products. Compared with natural montmorillonite, both processes showed higher conversion in which the conversion of citronellal over montmorillonite give the concersion less than 5%. The adequacy of H2 flow rate as a reactant is an important factor affection the mechanism is discussed in this paper.

TiO2 DISPERSION TO IN SiO2-MONTMORILLONIT: EFFECT OF PRECURSOR TYPE Is Fatimah
Jurnal Penelitian Saintek Vol 14, No 1: April 2009
Publisher : Institute of Research and Community Services, Universitas Negeri Yogyakarta

Dispersion of titanium dioxide into montmorilonite pillared silica (SiO2-montmorillonite) was performed in order to gain homogeneous dispersion of TiO2 in solid support having high specific surface area, thermal stability and chemical stability. In this research, effect of titanium precursor to the physicochemical character of material was studied. Three different precursors : TiCl4, TiOCl2 and titanium tetraisopropoxide (TTIP) were dispersed on SiO2-montmorillonite at the concentration of 5% followed by calcination at 400oC for 3 h. Evaluation on material character was studied based on XRD, surface area analyzer and spectrophotometer Diffuse Reflectance UV-Visible (DRUV-Vis) measurements.Result of research show that there is a strong dependency between material properties and tittanium precursor. By three kind of precursors, it can be concluded that main factor playing role in determination of dispersion homogeneity is pH of the system in that TiCl4 cause structure delamination of SiO2-montmorillonite. Based on physicochemical characters, it can remarkably concluded that the success of dispersion by variation of titanium precursors as follow: TTIPTiOCl2TiCl4 .

Effect of Temperature on Rice Husk Asing and Its Application on Adsorbing Fe and Zn Metal in Patchouli Oil Ahmad Said; Is Fatimah; Dwiarso Rubianto
EKSAKTA: Journal of Sciences and Data Analysis VOLUME 14, ISSUE 2, August 2014
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/eksakta.vol14.iss2.art7

Telah dilakukan studi pengaruh temperatur pembuatan adsorben abu sekam padi (ASP) dan aplikasinya pada adsorbsi logam Fe dan Zn dalam minyak nilam. Variasi temperatur pengabuan dilakukan pada 300, 500, dan 7000C selama 2 jam. Variasi temperatur pengabuan bertujuan mengkarakterisasiadsorben ASP. Karakterisasi yang dilakukan yakni penentuan silika secara gravimetri, diameter pori, morfologi abu dan komposisi unsurdengan teknik SEM/EDS,dan adsorptivitas terhadap metilen biru secara spektrofotometri. Tiga varian ASP diaplikasikan pada pemurnian minyak nilam dengan metode adsorbsi. Rendemen ASP-300, ASP-500, dan ASP-700 yang dihasilkan secara berurutan yaitu 35,4%, 25%, dan 16,5%. Kadar silikanya sebesar 43,12%, 72,12% dan 87,7%. Adsorbtivitas terhadap MB diperoleh 1,1616 mg/g, 0,7507 mg/g, dan 0,4128 mg/g. Diameter pori rata-rata antara 4,4 – 6,8μm. ASP mampu memurnikan minyak nilam dengan metode adsorbsi. Warna, bobot jenis, indeks bias, dan kadar logam Fe serta Zn pasca adsorbsi telah memenuhi standar mutu minyak nilam SNI. ASP-700 adalah adsorben paling baik dibandingkan ASP-500 dan ASP-300 dalam pemurnian minyak nilam.

IMPROVEMENT OF THE PRODUCT AND QUALITY OF POGOSTEMON CABLIN BENTH Allwar Allwar; is fatimah; noor fitri; dwiarso rubiyanto
EKSAKTA: Journal of Sciences and Data Analysis VOLUME 14, ISSUE 1, February 2014
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

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Pogostemon cablin benth is an economic source of farmer communities which are presence in several provinces in Indonesia. In general, the production and quality of the Pogostemon cablin benth produced by the farmers are still low or under the standard ISO. The chelating method, the influence of pH and adsorption method with activated carbon and montmorilonite were carried out to improve the production and quality of Pogostemon cablin benth. The results show that the production and the quality tends to be better proved by the color changes to yellow bright, reduced metal contents and an increase in Pogostemon cablin benth

Synthesis of Metal and Metal Oxide Nanoparticles Using Plant Extract: a Review Is Fatimah
EKSAKTA: Journal of Sciences and Data Analysis VOLUME 17, ISSUE 1, February 2017
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/eksakta.vol17.iss1.art7

Nanotechnology is an emerging technology and it is related to various applications. Related to nanotechnology development, the use of green chemistry concept, low cost technology and sustainability is a must. Synthesis of nanoparticles using plant extract is a developing technique within the scheme. In this paper, study on metal/metal oxide synthesis and its aspects is presented for describing the potency of natural resources for nanoparticle synthesis within green chemistry approach.

Co-Authors - Rostyanesia Ahmad Said Ahmad Said Allwar Allwar Amri Yahya Arif Hidayat Arjek, Orien Claudia Handayani Arvina Adil Asep Abdurrahman Bambang Hernawan Nugroho Cicik Rahmawati Dian Riyanti Diyan Kurniaysih Dwi Gusti Apriliani Dwi Nur Halimah Dwi Nur Halimah Dwiarso Rubianto Dwiarso Rubiyanto Eko Sugiharto Endah Desiyani Faiha Ulfiyani Zaenuri Farah Liyana Bohari Fethi Kooli Fitriani Harjati Galih Dwiki Ramanda Getu Kassegn Weldegebrieal Getu Kassegn Weldegebrieal Gusti Dwi Apriliani Habibi Hidayat Hasna' Azizah Azzahra' Hikmah Fatmawati Imam Sahroni Iqmal Tahir Iwan Sumarlan Iwan Sumarlan Iwan Sumarlan J. Anita Lett Jaka Nugraha Kamalia Kamalia Karna Wijaya Karna Wijaya Karna Wijaya Karna Wijaya Karna Wijaya Karna Wijaya Karna Wijaya Khoirul Himmi Setyawan Khoirunisa khoirunisa Lita Dewi Pertiwi Lolita Narulita Doewandono Minh-Vien Le Mohd Rafie Johan Muchammad Tamyiz Nanda Candra Kartika Narsito Narsito Narsito Narsito Narsito Nindia Mega Kurniawati Noor Fitri Nur Afisa Lintang Mutiara Nur Aishah Mohd Noor Nur Nadia Dzulkifli Nurain Adam Nurcahyo Iman Prakoso Orien Claudia Handayani Arjek Pertiwi, Lita Dewi Prihatiningsih Prihatiningsih Prihatiningsih Prihatiningsih, Prihatiningsih Putwi Widya Citradewi Rahmania Audita Rahmawati, Cicik Revita Anggreyani Rico Nurillahi Rico Nurillahi Rico Nurillahi Rifaldi Lutfi Fahmi Riyanto Riyanto Riyanto Riyanto Rohini Pujiarti Rudatiningsih Rudatiningsih Ruey-an Doong Septian Perwira Yudha Sesy Ardyanti Shaobin Wang Sheikh Ahmad Izaddin Sheikh Mohd Ghazali Sheikh Ahmad Izaddin Sheikh Mohd Ghazali Solhe F. Alshahateet Sri Sudiono Suresh Sagadevan Suresh Sagadevan Suresh Sagadevan Suresh Sagadevan Tesha Yuliarni Thorikul Huda Titus Chinedu Egbosiuba Torikul Huda Totok Eka Suharto Tuty Alawiyah Uun Ayil Hasanah Uun Ayyil Hasanah Wellyana Puspitasari Won-Chun Oh Yunani, Yuyun Yusak Maryunianta Yuyun Yunani Yuyun Yunani Nurkholifah Zahrah Nur Zakiyah Zakiyah, Zahrah Nur

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