OOIR: Observatory of International Research

Papers

(The H4-Index of Fuel is 92. 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 2020-04-01 to 2024-04-01.)

Article	Citations
Hydrophilic nitrogen-doped carbon dots from biowaste using dwarf banana peel for environmental and biological applications	274
Experimental study on ammonia/hydrogen/air combustion in spark ignition engine conditions	245
A critical review of pretreatment technologies to enhance anaerobic digestion and energy recovery	218
A brief review on supercapacitor energy storage devices and utilization of natural carbon resources as their electrode materials	217
Impact of various metal-oxide based nanoparticles and biodiesel blends on the combustion, performance, emission, vibration and noise characteristics of a CI engine	199
Microalgae biomass as a sustainable source for biofuel, biochemical and biobased value-added products: An integrated biorefinery concept	192
A review on regulations, current status, effects and reduction strategies of emissions for marine diesel engines	188
An Overview of Hydrogen Production: Current Status, Potential, and Challenges	186
Review on pretreatment techniques to improve anaerobic digestion of sewage sludge	182
A review on the pyrolysis of algal biomass for biochar and bio-oil – Bottlenecks and scope	178
A review of controlling strategies of the ignition timing and combustion phase in homogeneous charge compression ignition (HCCI) engine	171
Progress in green ammonia production as potential carbon-free fuel	169
A review on the progress and prospects of oxy-fuel carbon capture and sequestration (CCS) technology	157
Opportunities for improving biodiesel production via lipase catalysis	156
Greenhouse gases utilization: A review	154
A review of dolomite catalyst for biomass gasification tar removal	146
Biomass-based biorefineries: An important architype towards a circular economy	146
Maximization of biodiesel production from sunflower and soybean oils and prediction of diesel engine performance and emission characteristics through response surface methodology	143
Stabilization mechanism and chemical demulsification of water-in-oil and oil-in-water emulsions in petroleum industry: A review	143
The effects of Fe2O3 based DOC and SCR catalyst on the combustion and emission characteristics of a diesel engine fueled with biodiesel	139
Comprehensive review on the application of inorganic and organic nanoparticles for enhancing biohydrogen production	139
Comparative study of nanoparticles and alcoholic fuel additives-biodiesel-diesel blend for performance and emission improvements	136
Hydrothermal carbonization of organic wastes to carbonaceous solid fuel – A review of mechanisms and process parameters	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	133
Performance and emission prediction of a compression ignition engine fueled with biodiesel-diesel blends: A combined application of ANN and RSM based optimization	133

A review on biochar production techniques and biochar based catalyst for biofuel production from algae	132
Bioenergy and bio-products from bio-waste and its associated modern circular economy: Current research trends, challenges, and future outlooks	131
A comparative study on the combustion and emissions of a non-road common rail diesel engine fueled with primary alcohol fuels (methanol, ethanol, and n-butanol)/diesel dual fuel	131
Effects of ammonia energy fraction and diesel injection timing on combustion and emissions of an ammonia/diesel dual-fuel engine	130
A comparative study on the effect of nano-additives on the performance and emissions of a diesel engine run on Jatropha biodiesel	129
Lignocellulosic biomass based biorefinery: A successful platform towards circular bioeconomy	127
Effect of biomass type and pyrolysis temperature on nitrogen in biochar, and the comparison with hydrochar	126
Review of the backfire occurrences and control strategies for port hydrogen injection internal combustion engines	125
Molecular structure characterization of low-medium rank coals via XRD, solid state 13C NMR and FTIR spectroscopy	122
Bio-methanol as a renewable fuel from waste biomass: Current trends and future perspective	121
Reducing carbon deposition and enhancing reaction stability by ceria for methane dry reforming over Ni@SiO2@CeO2 catalyst	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
An overview on advancements in biobased transesterification methods for biodiesel production: Oil resources, extraction, biocatalysts, and process intensification technologies	120
Determination of a diesel engine operating parameters powered with canola, safflower and waste vegetable oil based biodiesel combination using response surface methodology (RSM)	118
Effect of hydrogen blending on the high temperature auto-ignition of ammonia at elevated pressure	117
Waste to energy: Production of waste tire pyrolysis oil and comprehensive analysis of its usability in diesel engines	116
Optimization of diesel engine operating parameters fueled with palm oil-diesel blend: Comparative evaluation between response surface methodology (RSM) and artificial neural network (ANN)	116
Experimental study on modification of physicochemical characteristics of acidified coal by surfactants and ionic liquids	115
Mechanism of in-situ dynamic catalysis and selective deactivation of H2O-activated biochar for biomass tar reforming	115
Latest progress on the key operating parameters affecting the photocatalytic activity of TiO2-based photocatalysts for hydrogen fuel production: A comprehensive review	115
The influence of long-time water intrusion on the mineral and pore structure of coal	115
Recent progress in flame stabilization technologies for combustion-based micro energy and power systems	114
Current challenges and innovative developments in pretreatment of lignocellulosic residues for biofuel production: A review	113
An experimental study on the influence of an oxygenated additive in diesel engine fuelled with neat papaya seed biodiesel/diesel blends	112
Effect of reaction temperature on the conversion of algal biomass to bio-oil and biochar through pyrolysis and hydrothermal liquefaction	111
Overview of commonly used materials for coal spontaneous combustion prevention	109
Effect of nanoparticles on the performance of polymer/surfactant flooding for enhanced oil recovery: A review	109
Changes in the pore structure of lignite after repeated cycles of liquid nitrogen freezing as determined by nitrogen adsorption and mercury intrusion	108
Construction of multifunctional dual Z-scheme composites with enhanced photocatalytic activities for degradation of ciprofloxacin	107
The water gas shift reaction: Catalysts and reaction mechanism	107
Molecular dynamics simulation and experimental characterization of anionic surfactant: Influence on wettability of low-rank coal	107
Determining the effect of the non-ionic surfactant AEO9 on lignite adsorption and wetting via molecular dynamics (MD) simulation and experiment comparisons	106
CO2 and CH4 adsorption on different rank coals: A thermodynamics study of surface potential, Gibbs free energy change and entropy loss	106
A comprehensive review of physicochemical properties, production process, performance and emissions characteristics of 2nd generation biodiesel feedstock: Jatropha curcas	106
Water chestnut shell-derived N/S-doped porous carbons and their applications in CO2 adsorption and supercapacitor	105
Insights on biological hydrogen production routes and potential microorganisms for high hydrogen yield	105
Hierarchical zeolite for biomass conversion to biofuel: A review	105
Modeling and experiment for effective diffusion coefficient of gas in water-saturated coal	103
A review of liquid nitrogen fracturing technology	102
Investigation on the combustion and emission characteristics of diesel engine fueled with diesel/methanol/n-butanol blends	101
Optimization, kinetic and thermodynamic studies on sustainable biodiesel production from waste cooking oil: An Indian perspective	101
Highly active and stable magnetically recyclable CuFe2O4 as a heterogenous catalyst for efficient conversion of waste frying oil to biodiesel	101
Anionic defects engineering of Co3O4 catalyst for toluene oxidation	100
Development of biomass derived highly porous fast adsorbents for post-combustion CO2 capture	100
Seaweed-derived biochar with multiple active sites as a heterogeneous catalyst for converting macroalgae into acid-free biooil containing abundant ester and sugar substances	99
A critical review of CO2 enhanced oil recovery in tight oil reservoirs of North America and China	98
Pore and fracture development in coal under stress conditions based on nuclear magnetic resonance and fractal theory	98
Activation strategies for biochar to use as an efficient catalyst in various applications	98
Numerical investigation on ammonia co-firing in a pulverized coal combustion facility: Effect of ammonia co-firing ratio	98
A realistic scenario on microalgae based biodiesel production: Third generation biofuel	97

A comprehensive review on lignin pyrolysis: Mechanism, modeling and the effects of inherent metals in biomass	97
Optimal immobilization of Trichoderma asperellum laccase on polymer coated Fe3O4@SiO2 nanoparticles for enhanced biohydrogen production from delignified lignocellulosic biomass	97
Impact of cultivation conditions on the biomass and lipid in microalgae with an emphasis on biodiesel	96
A novel Citrus sinensis peel ash coated magnetic nanoparticles as an easily recoverable solid catalyst for biodiesel production	96
Upgrading rice husk via oxidative torrefaction: Characterization of solid, liquid, gaseous products and a comparison with non-oxidative torrefaction	95
Optimizing biodiesel production from abundant waste oils through empirical method and grey wolf optimizer	95
Effect of spirulina microalgae biodiesel enriched with diesel fuel on performance and emission characteristics of CI engine	95
Thermal degradation of rice husk: Effect of pre-treatment on kinetic and thermodynamic parameters	95
The comparison of combustion, engine performance and emission characteristics of ethanol, methanol, fusel oil, butanol, isopropanol and naphtha with n-heptane blends on HCCI engine	95
Effects of biodiesel obtained from Canola, sefflower oils and waste oils on the engine performance and exhaust emissions	95
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	95
Optimization of performance and emission characteristics of CI engine fueled with Jatropha biodiesel produced using a heterogeneous catalyst (CaO)	94
Catalytic hydrothermal liquefaction of biomass into bio-oils and other value-added products – A review	94
The effect of methanol production and application in internal combustion engines on emissions in the context of carbon neutrality: A review	93
Fabrication of Zn and Mn loaded activated carbon derived from corn cobs for the adsorptive desulfurization of model and real fuel oils	93
Product property and environmental risk assessment of heavy metals during pyrolysis of oily sludge with fly ash additive	93
Prediction of biogas production from chemically treated co-digested agricultural waste using artificial neural network	93
Effect of hydrogen enrichment on the flame propagation, emissions formation and energy balance of the natural gas spark ignition engine	92