Leo Saputra

ORCID: 0000-0002-1520-8870
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About
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Research Areas
  • Catalytic Processes in Materials Science
  • Genetics, Bioinformatics, and Biomedical Research
  • Asymmetric Hydrogenation and Catalysis
  • Lubricants and Their Additives
  • Organometallic Complex Synthesis and Catalysis
  • Catalytic Cross-Coupling Reactions
  • Oxidative Organic Chemistry Reactions
  • Supercapacitor Materials and Fabrication
  • Swearing, Euphemism, Multilingualism
  • Blockchain Technology in Education and Learning
  • Biodiesel Production and Applications
  • Polyoxometalates: Synthesis and Applications
  • Catalysis and Hydrodesulfurization Studies
  • IoT-based Control Systems
  • Synthetic Organic Chemistry Methods
  • Nanotechnology research and applications
  • Engineering and Technology Innovations
  • Linguistics and Language Analysis
  • Language Acquisition and Education
  • Catalysis and Oxidation Reactions
  • Electrocatalysts for Energy Conversion

Bandung Institute of Technology
2022

Riau University
2018-2021

San Diego Supercomputer Center
2020

State University of Padang
2019

Chiba University
2018

Universitas Balikpapan
2017

Slang is a language used by specific group of people and usually in an informal situation. Plesbol Instagram account that contained the various term football slang words its captions. This study aims to find out types meaning Plesbol. research Elissa Mattiello’s theories (2008) about words. descriptive qualitative research. The data were taken from captions photos have been uploaded August until December 2018. result showed 498 collected, there nine found fifteen slangs. They are acronym...

10.24036/ell.v8i3.105802 article EN cc-by-nc English Language and Literature 2019-08-18

The sol-gel method was used to prepare pure cryptomelane and Cu-doped octahedral molecular sieve manganese oxide materials using CuSO4·5H2O as the dopant source. one-step synthetic approach is applied for a facile preparation of by reacting whole reactants including in one pot (known one-pot synthesis). added solution mixtures KMnO4 glucose with molar ratios 0, 1%, 5% 10% (the ratio Cu/Mn 0; 0.01; 0.05; 0.10). as-synthesized cryptomelane-type oxides have been characterized wide range...

10.1063/1.5065035 article EN AIP conference proceedings 2018-01-01

Pd-perovskite (Pd-STO, STO = SrTiO3) was synthesized by a relatively low-temperature (373 K) hydrothermal method without calcination. The morphology of the Pd-STO could be controlled adjusting H2O/NH3 ratio during fabrication amorphous titania. catalyst showed better durability for Suzuki couplings than did Pd-impregnated catalysts on conventional supports.

10.1021/acsomega.8b02622 article EN publisher-specific-oa ACS Omega 2018-12-17

Nanoalloy Ni-Sn(1,5) telah berhasil disintesis menggunakan metode yang mudah dan sederhana yaitu termediasi poliol dalam kondisi hidrotermal dengan rasio volume etilena glikol/air (EG/H 2 O) berbeda. Difraktogram XRD memperlihatkan pun cak pada posisi 2θ: 26,26o, 33,66o, 39,70o, 42,30o, 44,50o, 51,38o, 71,20o masing- masing merupakan puncak karakteristik dari β -SnO, NiO(111), Ni 3 Sn(200), Sn (102), (110), Ni(200), Sn(220). Kristalinitas (102) nanoalloy cenderung menurun meningkatnya EG/H O...

10.20527/jstk.v8i1.2133 article ID Jurnal Ilmiah Berkala Sains dan Terapan Kimia 2016-10-18

Perhitungan komputasi berbasis website yang tidak berbayar dan dapat diakses oleh siapapun akan berperan sangat penting dalam pembelajaran kimia bagi pemula. Pada penelitian ini, kami telah melakukan optimasi struktur kompleks Cu(II)-fenantrolin (Cu(II)-phe2) menggunakan perangkat lunak GAMESS pada kluster komputer San Diego Supercomputing Center (SDSC) melalui www.chemcompute.org. Hasil perhitungan menunjukkan bahwa kedua ligand fenantrolin berada satu bidang datar, tetapi membentuk sudut 35,4º.

10.31602/dl.v3i2.3906 article ID cc-by Dalton Jurnal Pendidikan Kimia dan Ilmu Kimia 2020-12-10

Pada penelitian ini, kami memanfaatkan pasir zirkon (ZrSiO4) yang kesediaannya cukup melimpah (174,22 juta ton) sebagai bahan baku pembuatan katalis zirkonia (ZrO2). Pasir dicampur dengan NaOH (rasio massa 1 : 1,5) kemudian dikalsinasi pada suhu 700 ºC selama jam. Ekstraksi menggunakan HCl dan presipitasi NH4OH menghasilkan endapan putih Zr(OH)4 dapat ditransformasi menjadi ZrO2 melalui kalsinasi. Hasil XRD menunjukkan bahwa dihasilkan bersifat amorf, berubah fase setelah kalsinasi...

10.31602/dl.v4i2.5934 article ID cc-by Dalton Jurnal Pendidikan Kimia dan Ilmu Kimia 2021-12-01
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