Zobrazeno 1 - 10
of 49
pro vyhledávání: '"Tri Esti Purbaningtias"'
Autor:
Tri Esti Purbaningtias, Sandy
Publikováno v:
Indonesian Journal of Chemical Analysis, Vol 7, Iss 2 (2024)
The robustness evaluation of the acid number analysis method in fish oil was carried out to see the effect of the type of ethanol used as a solvent in the titration process. The types of ethanol used in this study were pro analysis grade, pharma and
Externí odkaz:
https://doaj.org/article/f0c8d3fc7dd3457db8c6d10187089a70
Publikováno v:
Indonesian Journal of Chemical Analysis, Vol 6, Iss 1 (2023)
Kaolin with alumina and silica content is used as the main material in this research to study the synthesis of ZSM-5 zeolite. The hydrothermal process was carried out through different aging times, namely 12, 24 and 36 hours. Tetrapropyl ammonium bro
Externí odkaz:
https://doaj.org/article/a64bd85439054ead822dc57112495291
Autor:
Tri Esti Purbaningtias, M.Si., Bayu Wiyantoko, Rudy Syahputra, Yorfan Ruwindya, Suci Miranda, Rofi'atun Nashriyah, Bagoes Wibowo
Publikováno v:
Indonesian Journal of Chemical Analysis, Vol 5, Iss 2 (2022)
Telah dilakukan kajian pengaruh kalibrasi peralatan pengujian moisture and impurities (M&I) dan deterioration of bleachability index (DOBI) pada crude palm oil (CPO). Kalibrasi berfokus pada neraca analitik dan spektrofotometer UV-Visibel sebagai bag
Externí odkaz:
https://doaj.org/article/ef37bdcd72f14fa5965d012b248e86cf
Autor:
Ike Dayi Febriana, Abdul Hamid, Amin Jakfar, Mohammad Abdullah, Faizatur Rohmah, Tri Esti Purbaningtias, Zeni Rahmawati, Septian Dwi Wijaya
Publikováno v:
Indonesian Journal of Chemical Analysis, Vol 5, Iss 1 (2022)
Pemanfaatan batu kapur dari Pamekasan, Madura sebagai katalis heterogen pada reaksi pembuatan biodiesel dipelajari pada penelitian ini. Batu kapur dikalsinasi pada suhu 900 ºC selama 3 jam untuk membentuk katalis CaO. Katalis CaO yang terbentuk dika
Externí odkaz:
https://doaj.org/article/876f5f2d883547e5961bfa4c68b39f5f
Autor:
Alfa Akustia Widati, Mochamad Zakki Fahmi, Satya Candra Wibawa Sakti, Titah Aldila Budiastanti, Tri Esti Purbaningtias
Publikováno v:
Journal of Manufacturing and Materials Processing, Vol 6, Iss 5, p 110 (2022)
The clean technologies of self-cleaning surfaces are expanding rapidly. Highly hydrophobic coatings with strong adhesion, high durability, and dirt-free surfaces have been prepared via sol-gel deposition of SiO2-TiO2-alkylsilane. The influence of the
Externí odkaz:
https://doaj.org/article/d3cbb636ec5b466980655c72873e2397
Publikováno v:
Indonesian Journal of Chemical Analysis, Vol 3, Iss 2 (2020)
Externí odkaz:
https://doaj.org/article/68e0b1f61b724326a575643b555b3999
Assessing the effect of calcination on adsorption capability of Mg/Al layer double hydroxides (LDHs)
Autor:
Bayu Wiyantoko, Puji Kurniawati, Tri Esti Purbaningtias, Muhammad Husnu Jauhari, Amri Yahya, Muchammad Tamyiz, Is Fatimah, Ruey-an Doong
Publikováno v:
Materials Research Express, Vol 9, Iss 3, p 035505 (2022)
The present study was carried out to prepare and characterize calcined Mg/Al layer double hydroxides (LDHs) used in the adsorption of methyl orange in an aqueous solution as an anionic dye in a batch system. Synthesis of LDHs using coprecipitation me
Externí odkaz:
https://doaj.org/article/af2b4933f7c24be580522af0929888e8
Autor:
Tri Esti Purbaningtias, Didik Prasetyoko, Hasliza Bahruji, Yusuf Muhammad Zein, Sugeng Triwahyono, Arief Fadlan, Imroatul Qoniah
Publikováno v:
Indonesian Journal of Chemistry, Vol 15, Iss 1, Pp 56-63 (2015)
Aluminium chloride immobilized on mesoporous aluminosilicate was investigated as catalysts in the condensation of isatin with indole. AlCl3/mesoporous aluminosilicate (AlCl3/AM) catalysts were prepared by impregnation of 1, 5, 10 and 15 wt% AlCl3 on
Externí odkaz:
https://doaj.org/article/abefc38c163b447a8a8c29a26ae273ec
Autor:
Tri Esti Purbaningtias, Thorikul Huda
Publikováno v:
IJCER (International Journal of Chemistry Education Research), Vol 1, Iss 1 (2017)
ABSTRACT: The application of role-playing learning with self-assessment had been done in the course of Laboratory Management. The application of role-playing learning with self-assessment has been done in the course of Laboratory Management. The lear
Externí odkaz:
https://doaj.org/article/5199330f85a8498d933a90c95da3d2bd
Autor:
Cicik Herlina Yulianti, Ratna Ediati, Djoko Hartanto, Tri Esti Purbaningtias, Yoshifumi Chisaki, Aishah Abdul Jalil, Che Ku Nor Liana Che Ku Hitam, Didik Prasetyoko
Publikováno v:
Bulletin of Chemical Reaction Engineering & Catalysis, Vol 9, Iss 2, Pp 100-110 (2014)
The CaOZnO nanoparticle catalysts with Ca to Zn atomic ratios of 0.08 and 0.25 have been successfully synthesized by co-precipitation method. The catalyst was characterized by X-ray Diffraction (XRD) analysis provided with Rietica and Maud software,
Externí odkaz:
https://doaj.org/article/0fdd9307bf4a41e18576480bd2ff8b21