Results 11 to 20 of about 431,135 (299)

Hydrocracking of a Heavy Vacuum Gas Oil with Fischer–Tropsch Wax

open access: yesEnergies, 2020
Catalytic hydrocracking represents an optimal process for both heavy petroleum fractions and Fischer–Tropsch (FT) wax upgrading because it offers high flexibility regarding the feedstock, reaction conditions and products’ quality.
Olga Pleyer   +5 more
doaj   +1 more source

Co-Torrefaction Progress of Biomass Residue/Waste Obtained for High-Value Bio-Solid Products

open access: yesEnergies, 2022
The co-torrefaction of several biomasses may be a viable solution in the study area, as it produces biofuels and addresses waste-treatment concerns. This review evaluates biomass through ultimate, proximate, and FTIR analyses, and the mechanism of the co-
Abdul Waheed   +2 more
doaj   +1 more source

Selective Catalytic Reduction of NOx over Perovskite-Based Catalysts Using CxHy(Oz), H2 and CO as Reducing Agents—A Review of the Latest Developments

open access: yesNanomaterials, 2022
Selective catalytic reduction (SCR) is probably the most widespread process for limiting NOx emissions under lean conditions (O2 excess) and, in addition to the currently used NH3 or urea as a reducing agent, many other alternative reductants could be ...
Ioannis V. Yentekakis   +4 more
doaj   +1 more source

Comparative analysis of alternative fuels in detonation combustion [PDF]

open access: yes, 2016
Detonation combustion prominently exhibits high thermodynamic efficiency which leads to better performance. As compared to the conventionally used isobaric heat addition in a Brayton cycle combustor, detonation uses a novel isochoric Humphrey cycle which
Azami, M. H., Savill, Mark A.
core   +1 more source

Bimetallic Ni-Based Catalysts for CO2 Methanation: A Review

open access: yesNanomaterials, 2020
CO2 methanation has recently emerged as a process that targets the reduction in anthropogenic CO2 emissions, via the conversion of CO2 captured from point and mobile sources, as well as H2 produced from renewables into CH4. Ni, among the early transition
Anastasios I. Tsiotsias   +3 more
doaj   +1 more source

Mixed Effects Random Forest Model for Maintenance Cost Estimation in Heavy-Duty Vehicles Using Diesel and Alternative Fuels

open access: yesIEEE Access, 2023
Maintenance & Repair costs in heavy-duty trucks are an important component of the total cost of ownership. Due to the very limited availability of real-time data collected from medium- and heavy-duty vehicles using alternative fuels, this topic ...
Sasanka Katreddi   +3 more
doaj   +1 more source

Effects of Process Parameters on Hydrolytic Treatment of Black Liquor for the Production of Low-Molecular-Weight Depolymerized Kraft Lignin

open access: yesMolecules, 2018
The present research work aimed at hydrolytic treatment of kraft black liquor (KBL) at 200–300 °C for the production of low-molecular-weight depolymerized kraft lignin (DKL).
Zaid Ahmad   +4 more
doaj   +1 more source

Sustainable Process for the Depolymerization/Oxidation of Softwood and Hardwood Kraft Lignins Using Hydrogen Peroxide under Ambient Conditions

open access: yesMolecules, 2020
The present study demonstrated a sustainable and cost-effective approach to depolymerize/oxidize softwood (SW) and hardwood (HW) kraft lignins using concentrated hydrogen peroxide at temperatures ranging from 25 to 35 °C, in the absence of catalysts or ...
Zaid Ahmad   +3 more
doaj   +1 more source

Icevaning control of an Arctic offshore vessel and its experimental validation

open access: yesInternational Journal of Naval Architecture and Ocean Engineering, 2021
Managing with the presence of sea ice is the primary challenge in the operation of floating platforms in the Arctic region. It is widely accepted that offshore structures operating in Arctic conditions need station-keeping methods as well as ice ...
Young-Shik Kim, Jinwhan Kim
doaj   +1 more source

Green Diesel: Biomass Feedstocks, Production Technologies, Catalytic Research, Fuel Properties and Performance in Compression Ignition Internal Combustion Engines

open access: yesEnergies, 2019
The present investigation provides an overview of the current technology related to the green diesel, from the classification and chemistry of the available biomass feedstocks to the possible production technologies and up to the final fuel properties ...
Savvas L. Douvartzides   +3 more
doaj   +1 more source

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