OOIR: Observatory of International Research

Papers

(The H4-Index of Fuel is 91. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 250 papers]. The publications cover those that have been published in the past four years, i.e., from 2020-05-01 to 2024-05-01.)

Article	Citations
Hydrophilic nitrogen-doped carbon dots from biowaste using dwarf banana peel for environmental and biological applications	278
Experimental study on ammonia/hydrogen/air combustion in spark ignition engine conditions	266
A critical review of pretreatment technologies to enhance anaerobic digestion and energy recovery	225
A brief review on supercapacitor energy storage devices and utilization of natural carbon resources as their electrode materials	225
Impact of various metal-oxide based nanoparticles and biodiesel blends on the combustion, performance, emission, vibration and noise characteristics of a CI engine	203
An Overview of Hydrogen Production: Current Status, Potential, and Challenges	200
Microalgae biomass as a sustainable source for biofuel, biochemical and biobased value-added products: An integrated biorefinery concept	197
A review on regulations, current status, effects and reduction strategies of emissions for marine diesel engines	193
Review on pretreatment techniques to improve anaerobic digestion of sewage sludge	191
Progress in green ammonia production as potential carbon-free fuel	186
A review on the pyrolysis of algal biomass for biochar and bio-oil – Bottlenecks and scope	180
A review of controlling strategies of the ignition timing and combustion phase in homogeneous charge compression ignition (HCCI) engine	174
Greenhouse gases utilization: A review	166
A review on the progress and prospects of oxy-fuel carbon capture and sequestration (CCS) technology	163
Opportunities for improving biodiesel production via lipase catalysis	157
Biomass-based biorefineries: An important architype towards a circular economy	155
A review of dolomite catalyst for biomass gasification tar removal	149
Stabilization mechanism and chemical demulsification of water-in-oil and oil-in-water emulsions in petroleum industry: A review	148
Effects of ammonia energy fraction and diesel injection timing on combustion and emissions of an ammonia/diesel dual-fuel engine	145
Comprehensive review on the application of inorganic and organic nanoparticles for enhancing biohydrogen production	144
Hydrothermal carbonization of organic wastes to carbonaceous solid fuel – A review of mechanisms and process parameters	143
The effects of Fe2O3 based DOC and SCR catalyst on the combustion and emission characteristics of a diesel engine fueled with biodiesel	141
Comparative study of nanoparticles and alcoholic fuel additives-biodiesel-diesel blend for performance and emission improvements	139
A review on biochar production techniques and biochar based catalyst for biofuel production from algae	138
Performance and emission prediction of a compression ignition engine fueled with biodiesel-diesel blends: A combined application of ANN and RSM based optimization	138

Bioenergy and bio-products from bio-waste and its associated modern circular economy: Current research trends, challenges, and future outlooks	136
Review of the backfire occurrences and control strategies for port hydrogen injection internal combustion engines	135
Grafting copolymerization of dual acidic ionic liquid on core-shell structured magnetic silica: A magnetically recyclable Brönsted acid catalyst for biodiesel production by one-pot transformation of l	135
A comparative study on the effect of nano-additives on the performance and emissions of a diesel engine run on Jatropha biodiesel	132
Lignocellulosic biomass based biorefinery: A successful platform towards circular bioeconomy	131
Effect of biomass type and pyrolysis temperature on nitrogen in biochar, and the comparison with hydrochar	129
Bio-methanol as a renewable fuel from waste biomass: Current trends and future perspective	129
Reducing carbon deposition and enhancing reaction stability by ceria for methane dry reforming over Ni@SiO2@CeO2 catalyst	126
Molecular structure characterization of low-medium rank coals via XRD, solid state 13C NMR and FTIR spectroscopy	126
Determination of a diesel engine operating parameters powered with canola, safflower and waste vegetable oil based biodiesel combination using response surface methodology (RSM)	124
Latest progress on the key operating parameters affecting the photocatalytic activity of TiO2-based photocatalysts for hydrogen fuel production: A comprehensive review	124
Effect of hydrogen blending on the high temperature auto-ignition of ammonia at elevated pressure	121
An overview on advancements in biobased transesterification methods for biodiesel production: Oil resources, extraction, biocatalysts, and process intensification technologies	121
Comparative study on the combustion and emissions of dual-fuel common rail engines fueled with diesel/methanol, diesel/ethanol, and diesel/n-butanol	120
Optimization of diesel engine operating parameters fueled with palm oil-diesel blend: Comparative evaluation between response surface methodology (RSM) and artificial neural network (ANN)	118
Recent progress in flame stabilization technologies for combustion-based micro energy and power systems	117
The influence of long-time water intrusion on the mineral and pore structure of coal	117
Waste to energy: Production of waste tire pyrolysis oil and comprehensive analysis of its usability in diesel engines	117
Mechanism of in-situ dynamic catalysis and selective deactivation of H2O-activated biochar for biomass tar reforming	117
Current challenges and innovative developments in pretreatment of lignocellulosic residues for biofuel production: A review	116
An experimental study on the influence of an oxygenated additive in diesel engine fuelled with neat papaya seed biodiesel/diesel blends	114
Effect of reaction temperature on the conversion of algal biomass to bio-oil and biochar through pyrolysis and hydrothermal liquefaction	112
Effect of nanoparticles on the performance of polymer/surfactant flooding for enhanced oil recovery: A review	112
Overview of commonly used materials for coal spontaneous combustion prevention	111
The water gas shift reaction: Catalysts and reaction mechanism	111
Hierarchical zeolite for biomass conversion to biofuel: A review	111
Construction of multifunctional dual Z-scheme composites with enhanced photocatalytic activities for degradation of ciprofloxacin	111
A comprehensive review of physicochemical properties, production process, performance and emissions characteristics of 2nd generation biodiesel feedstock: Jatropha curcas	110
CO2 and CH4 adsorption on different rank coals: A thermodynamics study of surface potential, Gibbs free energy change and entropy loss	110
Insights on biological hydrogen production routes and potential microorganisms for high hydrogen yield	110
Changes in the pore structure of lignite after repeated cycles of liquid nitrogen freezing as determined by nitrogen adsorption and mercury intrusion	109
Molecular dynamics simulation and experimental characterization of anionic surfactant: Influence on wettability of low-rank coal	108
Determining the effect of the non-ionic surfactant AEO9 on lignite adsorption and wetting via molecular dynamics (MD) simulation and experiment comparisons	108
Water chestnut shell-derived N/S-doped porous carbons and their applications in CO2 adsorption and supercapacitor	107
Development of biomass derived highly porous fast adsorbents for post-combustion CO2 capture	104
Modeling and experiment for effective diffusion coefficient of gas in water-saturated coal	104
Pore and fracture development in coal under stress conditions based on nuclear magnetic resonance and fractal theory	103
Optimal immobilization of Trichoderma asperellum laccase on polymer coated Fe3O4@SiO2 nanoparticles for enhanced biohydrogen production from delignified lignocellulosic biomass	103
Investigation on the combustion and emission characteristics of diesel engine fueled with diesel/methanol/n-butanol blends	103
A critical review of CO2 enhanced oil recovery in tight oil reservoirs of North America and China	102
Highly active and stable magnetically recyclable CuFe2O4 as a heterogenous catalyst for efficient conversion of waste frying oil to biodiesel	102
Optimization, kinetic and thermodynamic studies on sustainable biodiesel production from waste cooking oil: An Indian perspective	102
Seaweed-derived biochar with multiple active sites as a heterogeneous catalyst for converting macroalgae into acid-free biooil containing abundant ester and sugar substances	102
Anionic defects engineering of Co3O4 catalyst for toluene oxidation	102
A comprehensive review on lignin pyrolysis: Mechanism, modeling and the effects of inherent metals in biomass	101
Activation strategies for biochar to use as an efficient catalyst in various applications	101
The effect of methanol production and application in internal combustion engines on emissions in the context of carbon neutrality: A review	101
Numerical investigation on ammonia co-firing in a pulverized coal combustion facility: Effect of ammonia co-firing ratio	100
Catalytic hydrothermal liquefaction of biomass into bio-oils and other value-added products – A review	99
A realistic scenario on microalgae based biodiesel production: Third generation biofuel	99

Impact of cultivation conditions on the biomass and lipid in microalgae with an emphasis on biodiesel	98
Prediction of biogas production from chemically treated co-digested agricultural waste using artificial neural network	98
A novel Citrus sinensis peel ash coated magnetic nanoparticles as an easily recoverable solid catalyst for biodiesel production	98
Upgrading rice husk via oxidative torrefaction: Characterization of solid, liquid, gaseous products and a comparison with non-oxidative torrefaction	98
Effect of spirulina microalgae biodiesel enriched with diesel fuel on performance and emission characteristics of CI engine	96
A detailed investigation on the performance, combustion, and exhaust emission characteristics of a diesel engine running on the blend of diesel fuel, biodiesel and 1-heptanol (C7 alcohol) as a next-ge	96
Characteristics and comparison of activated carbons prepared from oleaster (Elaeagnus angustifolia L.) fruit using KOH and ZnCl2	95
Thermal degradation of rice husk: Effect of pre-treatment on kinetic and thermodynamic parameters	95
Effect of hydrogen enrichment on the flame propagation, emissions formation and energy balance of the natural gas spark ignition engine	95
Optimization of performance and emission characteristics of CI engine fueled with Jatropha biodiesel produced using a heterogeneous catalyst (CaO)	95
Fabrication of Zn and Mn loaded activated carbon derived from corn cobs for the adsorptive desulfurization of model and real fuel oils	95
Optimizing biodiesel production from abundant waste oils through empirical method and grey wolf optimizer	95
A complete review on biochar: Production, property, multifaceted applications, interaction mechanism and computational approach	94
Enhanced activity and stability of MgO-promoted Ni/Al2O3 catalyst for dry reforming of methane: Role of MgO	93
A holistic overview of underground hydrogen storage: Influencing factors, current understanding, and outlook	92
Explosion venting hazards of temperature effects and pressure characteristics for premixed hydrogen-air mixtures in a spherical container	91
Numerical study of twin-spark plug arrangement effects on flame, combustion and emissions of a medium compression ratio direct-injection methanol engine	91
Application of bare nanoparticle-based nanofluids in enhanced oil recovery	91