Results 1 to 10 of about 232,989 (214)

Corncob waste derived carbon with sulfonic acid group: An efficient heterogeneous catalyst for production of ethyl levulinate as biodiesel additives [PDF]

Heliyon
Alkyl levulinate is a biomass-based chemical compound used as a fuel additive. This research aims to produce ethyl levulinate from levulinic acid and ethanol using esterification with the assistance of a heterogeneous sulfonated carbon catalyst.
Dian Ratna Suminar, Cinantya Zahrina Pribadi, Qonita Rahmah Fitriana, Eko Andrijanto, Muhamad Diki Permana, Diana Rakhmawaty Eddy, Iman Rahayu   +6 more
doaj   +2 more sources

Ni–Ru-containing mixed oxide-based composites as precursors for ethanol steam reforming catalysts: Effect of the synthesis methods on the structural and catalytic properties

Open Chemistry, 2021
Ethanol steam reforming catalyst’s precursors, i.e., nanocomposites of complex oxides with the general formula [Pr0.15Sm0.15Ce0.35Zr0.35O2 + LaMn0.45Ni0.45Ru0.1O3] (1:1 by mass), were synthesized by three different methods.
Naurzkulova Symbat Muratbekovna, Arapova Marina Vasilievna, Ishchenko Arcady Vladimirovich, Krieger Tamara Andreevna, Saraev Andrei Aleksandrovich, Kaichev Vasilii Vasilievich, Rogov Vladimir Alekseevich, Krasnov Aleksei Vyacheslavovich, Massalimova Bakytgul Kabykenovna, Sadykov Vladislav Aleksandrovich   +9 more
doaj   +1 more source

Improving the activity and stability of turtle shell-derived catalyst in alcoholysis of degraded vegetable oil: An experimental design approach

Journal of King Saud University: Engineering Sciences, 2023
In the activation of a heterogeneous catalyst, manipulating certain variables can affect its morphology, active sites and porosity which determine the efficiency of a heterogeneous catalyst.
Henry Oghenero Orugba, Lawrence Chukwuka Edomwonyi-Otu   +1 more
doaj   +1 more source

Synthesis, properties, and activity of MoVTeNbO catalysts modified by zirconia-pillared clays in oxidative dehydrogenation of ethane

Open Chemistry, 2021
Composites comprising MoVTeNbO mixed oxide and zirconia-pillared montmorillonite clays (PilCs) were prepared. XRD and TEM with EDX studies confirmed the preservation of M1 MoVTeNbO phase in these composites responsible for high activity and selectivity ...
Shorayeva Kamshat Abithanovna, Massalimova Bakytgul Kabykenovna, Bespalko Yulia Nikolaevna, Kovalev Evgenii Pavlovich, Ishchenko Arcady Vladimirovich, Sadykov Vladislav Aleksandrovich   +5 more
doaj   +1 more source

Mesoporous Silica-Based Catalysts for Biodiesel Production: A Review

ChemEngineering, 2023
High demand for energy consumption forced the exploration of renewable energy resources, and in this context, biodiesel has received intensive attention. The process of biodiesel production itself needs to be optimized in order to make it an eco-friendly
Is Fatimah, Ganjar Fadillah, Suresh Sagadevan, Won-Chun Oh, Keshav Lalit Ameta   +4 more
doaj   +1 more source

Non-Chemical Routes to Tailor Polymer Polydispersity, Activity and Fragmentation Mechanism of ZN Catalytic Systems in Heterogeneous Propylene Polymerization [PDF]

علوم و تکنولوژی پلیمر, 2022
Hypothesis: Modifications in chemical formulations of existing commercial polymerization catalysts may deteriorate other catalyst properties, especially stereo- and region-selectivity.
Saeed Pourmahdian, mansoor sheikhzadeh
doaj   +1 more source

Improving heterogeneous catalysis for biodiesel production process

Cleaner Chemical Engineering, 2022
The relevance of heterogeneous catalysis in biodiesel production cannot be overemphasized, as heterogeneous catalysts have eliminated the demerits associated with a homogeneous catalysts.
Onukwuli Dominic Okechukwu, Ezeugo Joseph, Ude Callistus Nonso, Nwosu-Obieogu Kenechi   +3 more
doaj   +1 more source

Heterogeneous catalyst synthesis from Ribbon vittata shells and its characterization for biodiesel production from Blighia sapida seed oil [PDF]

E3S Web of Conferences, 2023
The global campaign to achieve net zero emissions have necessitated the switch from fossil fuels to biofuels. Owing to the limited resources and high overall production costs, the use of biobased materials has been considered as an economic approach to ...
Onifade Moses Tunde, Ogunkunle Oyetola, Madushele Nkosinathi, Ahmed Noor A., Laseinde Opeyeolu Timothy   +4 more
doaj   +1 more source

Electrodeposition of Ni on MWNTs as a promising catalyst for CO2RR

Energy Science & Engineering, 2021
Novel methods for the preparation of metal‐supported materials are desired for better catalytic performance and selectivity. In this article, Ni supported on multiwall nanotubes (Ni/MWNTs) is synthesized with electrodeposition method for electrocatalytic
Siming Huo, Jessie Lu, Xianqin Wang
doaj   +1 more source

MCM-48 from rice husk ash as a novel heterogeneous catalyst for esterification of glycerol with oleic acid: Catalyst preparation, characterization, and activity

Case Studies in Chemical and Environmental Engineering, 2023
Mobil Composition of Matter No. 48 (MCM-48) was used as a heterogeneous catalyst to produce glycerol oleates from the esterification of glycerol with oleic acid. MCM-48 was prepared using rice husk ash (RHA) as a silica source by a hydrothermal autoclave
Badoor M. Kurji, Ammar S. Abbas
doaj   +1 more source