Topics in Catalysis

Papers
(The TQCC of Topics in Catalysis is 7. 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.)
ArticleCitations
Recent Trends on the Dehydrogenation Catalysis of Liquid Organic Hydrogen Carrier (LOHC): A Review87
A Short Review of Recent Advances in Direct CO2 Hydrogenation to Alcohols53
Synergy Between Ceria and Metals (Ag or Cu) in Catalytic Diesel Particulate Filters: Effect of the Metal Content and of the Preparation Method on the Regeneration Performance50
Synthesis of Tri-S-Triazine Based g-C3N4 Photocatalyst for Cationic Rhodamine B Degradation under Visible Light46
Synthesis and Photocatalytic Activity of Ni–Fe Layered Double Hydroxide Modified Sulphur Doped Graphitic Carbon Nitride (SGCN/Ni–Fe LDH) Photocatalyst for 2,4-Dinitrophenol Degradation45
Photocatalytic Degradation of Eriochrome Black-T Azo Dye Using Eu-Doped ZnO Prepared by Supercritical Antisolvent Precipitation Route: A Preliminary Investigation41
Photocatalytic Production of Hydrogen Peroxide over Modified Semiconductor Materials: A Minireview39
One-Pot Synthesis of Magnetite-ZnO Nanocomposite and Its Photocatalytic Activity39
UV–Visible Light Driven Photocatalytic Degradation of Ciprofloxacin by N,S Co-doped TiO2: The Effect of Operational Parameters39
Microwave-Assisted Solvothermal Synthesis and Photocatalytic Activity of Bismuth(III) Based Metal–Organic Framework38
A Review of Catalysts for Methylcyclohexane Dehydrogenation32
A Numerical Investigation of the Combined Effects of Initial Temperature and Catalyst Activity on the Dynamics of Soot Combustion in a Catalytic Diesel Particulate Filter31
Recent Advances in Synthesis of CeVO4 Nanoparticles and Their Potential Scaffold for Photocatalytic Applications30
Energy Storage, Photocatalytic and Electrochemical Nitrite Sensing of Ultrasound-Assisted Stable Ta2O5 Nanoparticles28
Facile Synthesis of Zn Doped g-C3N4 for Enhanced Visible Light Driven Photocatalytic Hydrogen Production27
Autonomous Reaction Network Exploration in Homogeneous and Heterogeneous Catalysis27
Towards Experimental Handbooks in Catalysis27
A Tramadol Drug Electrochemical Sensor Amplified by Biosynthesized Au Nanoparticle Using Mentha aquatic Extract and Ionic Liquid26
Recent Advances in the One-Pot Synthesis of Coumarin Derivatives from Different Starting Materials Using Nanoparticles: A Review26
Polyaniline-Manganese Ferrite Supported Platinum–Ruthenium Nanohybrid Electrocatalyst: Synergizing Tailoring Toward Boosted Ethanol Oxidation Reaction26
Beyond Continuum Solvent Models in Computational Homogeneous Catalysis25
Synthesis and Application of Novel Nano Fe-BTC/GO Composites as Highly Efficient Photocatalysts in the Dye Degradation25
Extendable Machine Learning Model for the Stability of Single Atom Alloys25
Morphology-Sensitive Sulfation Effect on Ceria Catalysts for NH3-SCR24
RETRACTED ARTICLE: Catalytic Membrane Micro-Reactors for Fuel and Biofuel Processing: A Mini Review23
Photocatalytic Degradation of Industrial Dye in Semi-Pilot Scale Prototype Solar Photoreactor: Optimization and Modeling Using ANN and RSM Based on Box–Wilson Approach23
Electrochemical Sensor for Facile and Highly Selective Determination of Antineoplastic Agent in Real Samples Using Glassy Carbon Electrode Modified by 2D-MoS2 NFs/TiO2 NPs23
Enhanced Photocatalytic Activity of Hydrothermally Synthesized Perovskite Strontium Titanate Nanocubes23
Sequential Microwave-Assisted Dealumination and Hydrothermal Alkaline Treatments of Y Zeolite for Preparing Hierarchical Mesoporous Zeolite Catalysts23
Tailoring the Silica Amount in Stabilizing the Tetragonal Phase of Zirconia for Enhanced Photodegradation of 2-Chlorophenol22
Brief Review of Precipitated Iron-Based Catalysts for Low-Temperature Fischer–Tropsch Synthesis22
Introducing an Electrochemical Sensor Based on Two Layers of Ag Nanoparticles Decorated Graphene for Rapid Determination of Methadone in Human Blood Serum22
Boosting Effect of Nitrogen and Phosphorous Co-doped Three-Dimensional Graphene Architecture: Highly Selective Electrocatalysts for Carbon Dioxide Electroreduction to Formate21
The Nano-Based Catalyst for the Synthesis of Benzimidazoles21
CO2 Hydrogenation to Light Olefins Over In2O3/SAPO-34 and Fe-Co/K-Al2O3 Composite Catalyst21
Characterization of Acid and Basic Sites on Zirconia Surfaces and Nanoparticles by Adsorbed Probe Molecules: A Theoretical Study20
Reduce Graphene Oxide/Fe3O4 Nanocomposite Biosynthesized by Sour Lemon Peel; Using as Electro-catalyst for Fabrication of Vanillin Electrochemical Sensor in Food Products Analysis and Anticancer Activ20
Synthesis of N and S Co-doped TiO2 Nanotubes for Advanced Photocatalytic Degradation of Volatile Organic Compounds (VOCs) in Gas Phase19
Heterogeneous Catalysis on Liquid Organic Hydrogen Carriers19
Passive NO Adsorption on Hydrothermally Aged Pd-Based Small-Pore Zeolites19
Oxygen Evolution and Reduction on Fe-doped NiOOH: Influence of Solvent, Dopant Position and Reaction Mechanism19
The Challenge of CO Hydrogenation to Methanol: Fundamental Limitations Imposed by Linear Scaling Relations19
Ab Initio Molecular Dynamics Studies of the Electric-Field-Induced Catalytic Effects on Liquids19
TiO2 Photocatalytic Degradation of Diclofenac: Intermediates and Total Reaction Mechanism19
Catalyst Design and Progresses for Urea Oxidation Electrolysis in Alkaline Media19
Fabrication of Fibrous Silica Zinc (FSZn) Composite for Enhanced Photocatalytic Desulphurization19
RETRACTED ARTICLE: Promoted Nickel–Cobalt Bimetallic Catalysts for Biogas Reforming18
Nickel-Catalysed Vapour-Phase Hydrogenation of Furfural, Insights into Reactivity and Deactivation18
Studies on Synthesis, Characterization of Smx ZnO:CoO Nanocomposites and Its Effect on Photo Catalytic Degradation of Textile Dyes18
Catalytic Processes for Biomass-Derived Platform Molecules Valorisation17
Catalysis at Metal/Oxide Interfaces: Density Functional Theory and Microkinetic Modeling of Water Gas Shift at Pt/MgO Boundaries17
Platinum and Palladium Monolayer Electrocatalysts for Formic Acid Oxidation17
Visibly Active FeO/ZnO@PANI Magnetic Nano-photocatalyst for the Degradation of 3-Aminophenol17
Synthesis of Ag2O Coated TiO2 Nanoparticles by Sonochemically Activated Methods for Enhanced Photocatalytic Activities17
Development of g-C3N4/BiVO4 Binary Component Heterojunction as an Advanced Visible Light-Responded Photocatalyst for Polluted Antibiotics Degradation16
Study on Catalyst Deactivation During the Hydrodeoxygenation of Model Compounds16
CO2 Hydrogenation to Methanol over Copper Catalysts: Learning from Syngas Conversion16
Achievements and Expectations in the Field of Computational Heterogeneous Catalysis in an Innovation Context16
Synthesis of a Magnetic Fe3O4/RGO Composite for the Rapid Photo-Fenton Discoloration of Indigo Carmine Dye16
Spirulina Based Iron Oxide Nanoparticles for Adsorptive Removal of Crystal Violet Dye16
Formaldehyde Oxidation on Pd/TiO2 Catalysts at Room Temperature: The Effects of Surface Oxygen Vacancies16
Selective Photo-epoxidation of (R)-(+)- and (S)-(−)-Limonene by Chiral and Non-Chiral Dioxo-Mo(VI) Complexes Anchored on TiO2-Nanotubes16
Photocatalytic Activity of Soft Magnetic Fe80−xCoxZr10Si10 (x = 0, 40, and 80) Nanocrystalline Melt-Spun Ribbons16
PdCu Single Atom Alloys for the Selective Oxidation of Methanol to Methyl Formate at Low Temperatures16
Nanoscale Perspectives of Metal Degradation via In Situ Atom Probe Tomography15
Hydrothermal Synthesis of Flower Like MnSe2@MoSe2 Electrode for Supercapacitor Applications15
Cu–Fe Incorporated Graphene-Oxide Nanocomposite as Highly Efficient Catalyst in the Degradation of Dichlorodiphenyltrichloroethane (DDT) from Aqueous Solution14
C3N4 Impregnated with Porphyrins as Heterogeneous Photocatalysts for the Selective Oxidation of 5-Hydroxymethyl-2-Furfural Under Solar Irradiation14
Optimizing Nitrogen Reduction Reaction on Nitrides: A Computational Study on Crystallographic Orientation14
Quo Vadis Micro-Electro-Mechanical Systems for the Study of Heterogeneous Catalysts Inside the Electron Microscope?14
Electron Energy Loss Spectroscopy for Single Atom Catalysis13
Synthesis and Characterization of Mn–Ce–VOx/TiO2 Nanocomposite for SCR of NOx at Low Temperatures: Role of Mn, Ce and V Oxide13
Recent Advances in the Understanding of Boron-Containing Catalysts for the Selective Oxidation of Alkanes to Olefins13
Effect of Tin in the Bulk of Platinum–Tin Alloys for Ethane Dehydrogenation13
Steam Reforming of Hydrocarbons for Synthesis Gas Production13
Automated Construction and Optimization Combined with Machine Learning to Generate Pt(II) Methane C–H Activation Transition States12
Controlled Synthesis of Novel Graphene Oxide Nanoparticles for the Photodegradation of Organic Dyes12
The Role of Composition and Phase upon the Lattice Nitrogen Reactivity of Ternary Molybdenum Nitrides12
Recent Progress in Photocatalytic Efficiency of Hybrid Three-Dimensional (3D) Graphene Architectures for Pollution Remediation12
On the Structural Transformation of Ni/BaH2 During a N2-H2 Chemical Looping Process for Ammonia Synthesis: A Joint In Situ Inelastic Neutron Scattering and First-Principles Simulation Study12
Photocatalytic Degradation of Phenol and Methyl Orange with Titania-Based Photocatalysts Synthesized by Various Methods in Comparison with ZnO–Graphene Oxide Composite12
High Yield Silica-Based Emerging Nanoparticles Activities for Hybrid Catalyst Applications12
Rational Design of Mixed Solvent Systems for Acid-Catalyzed Biomass Conversion Processes Using a Combined Experimental, Molecular Dynamics and Machine Learning Approach12
A Novel Mixed Ag–Pd Nanoparticles Supported on SBA Silica Through [DMAP-TMSP-DABCO]OH Basic Ionic Liquid for Suzuki Coupling Reaction12
Co-Catalyst Ti3C2TX MXene-Modified ZnO Nanorods Photoanode for Enhanced Photoelectrochemical Water Splitting12
Highly Active Mixed Au–Pd Nanoparticles Supported on RHA Silica Through Immobilised Ionic Liquid for Suzuki Coupling Reaction12
Layered Nanocomposite 2D-TiO2 with Cu2O Nanoparticles as an Efficient Photocatalyst for 4-Chlorophenol Degradation and Hydrogen Evolution12
Biogenic Synthesis of Magnetic Palladium Nanoparticles Decorated Over Reduced Graphene Oxide Using Piper Betle Petiole Extract (Pd-rGO@Fe3O4 NPs) as Heterogeneous Hybrid Nanocatalyst for Applications 12
Enhanced Photocatalytic Degradation of MB Under Visible Light Using the Modified MIL-53(Fe)12
Copper (II)-β-Cyclodextrin Promoted Kabachnik-Fields Reaction: An Efficient, One-Pot Synthesis of α-Aminophosphonates11
Synthesis of Cs-Ag/Fe2O3 Nanoparticles Using Vitis labrusca Rachis Extract as Green Hybrid Nanocatalyst for the Reduction of Arylnitro Compounds11
Heteroatom Modified Hybrid Carbon Quantum Dots Derived from Cucurbita pepo for the Visible Light Driven Photocatalytic Dye Degradation11
Fe3O4@Au-rGO Nanocomposite/Ionic Liquid Modified Sensor for Ultrasensitive and Selective Sensing of Doxorubicin11
A Hybrid Nanocomposite of Coordination Polymer and rGO for Photocatalytic Degradation of Safranin-O Dye Under Visible Light Irradiation11
Preparation of Polyaniline Microtubes as the Gold Catalyst Support with Improved Catalytic Performances for the Reduction of Nitrophenols11
Computational Study of Homogeneous Multimetallic Cooperative Catalysis11
Textile Dye Removal by Acacia dealbata Link. Pollen Adsorption Combined with UV-A/NTA/Fenton Process11
Highly Active, Selective and Stable Reverse Water Gas Shift Catalyst Based on High Surface Area MoC/γ-Al2O3 Synthesized by Reverse Microemulsion11
Photocatalytic Degradation of 2,4-Dichlorophenol on NiAl-Mixed Oxides Derivatives of Activated Layered Double Hydroxides11
Artificial Neural Network Modeling of Thermo-catalytic Methane Decomposition for Hydrogen Production11
Effects of Ce Doping on the Photocatalytic and Electrochemical Performance of Nickel Hydroxide Nanostructures11
The Effect of Hartree-Fock Exchange on Scaling Relations and Reaction Energetics for C–H Activation Catalysts11
The Subsurface Diffusion of Hydrogen on Rutile TiO2 Surfaces: A Periodic DFT Study11
RETRACTED ARTICLE: Green Synthesis of Chitosan Supported Magnetic Palladium Nanoparticles Using Epiphyllum oxypetalum Leaf Extract (Pd-CsEo/Fe3O4 NPs) as Hybrid Nanocatalyst for Suzuki–Miyaura Couplin10
Transition Metal (Ni, Cu and Fe) Substituted Co3O4 – ZrO2 Catalysts for Lean Methane Combustion10
Identifying Outstanding Transition-Metal-Alloy Heterogeneous Catalysts for the Oxygen Reduction and Evolution Reactions via Subgroup Discovery10
Newly Synthesized Multifunctional Biopolymer Coated Magnetic Core/Shell Fe3O4@Au Nanoparticles for Evaluation of L-asparaginase Immobilization10
Thiophene HDS on La-Modified CoMo/Al2O3 Sulfided Catalysts. Effect of Rare-Earth Content10
Effect of Bismuth Dopant on the Photocatalytic Properties of SrTiO3 Under Solar Irradiation10
RETRACTED ARTICLE: Guar Gum and its Nanocomposites as Prospective Materials for Miscellaneous Applications: A Short Review10
Role of Additives in Transition Metal Catalyzed C–H Bond Activation Reactions: A Computational Perspective10
Ecofriendly Synthesis of Ribociclib Intermediate Using Regioselective Hydrodechlorination and DMAP Catalyzed Ester Hydrolysis10
Mechanism and Kinetics of Ethane Aromatization According to the Chemical Transient Analysis10
Optimization of Supports in Bifunctional Supported Pt Catalysts for Polystyrene Hydrocracking to Liquid Fuels10
Numerical Modeling for the Photocatalytic Degradation of Methyl Orange from Aqueous Solution using Cellulose/Zinc Oxide Hybrid Aerogel: Comparison with Experimental Data10
Evaluation of Caffeine Degradation by Sequential Coupling of TiO2/O3/H2O2/UV Processes10
Tailoring the Physicochemical Properties of Mg Promoted Catalysts via One Pot Non-ionic Surfactant Assisted Co-precipitation Route for CO2 Co-feeding Syngas to Methanol10
From Electricity to Products: Recent Updates on Microbial Electrosynthesis (MES)10
Calcium Oxide Supported on Coal Fly Ash (CaO/CFA) as an Efficient Catalyst for Biodiesel Production from Jatropha curcas Oil9
Investigation of the Different Morphologies of Zinc Oxide (ZnO) in Cellulose/ZnO Hybrid Aerogel on the Photocatalytic Degradation Efficiency of Methyl Orange9
Selective Vanillin Hydrodeoxygenation on Synthetic Takovite Derived NiAlOx Mixed Oxide9
Energy-Guided Shape Control Towards Highly Active CeO29
Density Functional Theory Study into the Reaction Mechanism of Isonitrile Biosynthesis by the Nonheme Iron Enzyme ScoE9
Methanol dynamics in H-ZSM-5 with Si/Al ratio of 25: a quasi-elastic neutron scattering (QENS) study9
Ethanol Steam Reforming for Hydrogen Production Over Hierarchical Macroporous Mesoporous SBA-15 Supported Nickel Nanoparticles9
Structure-Activity Relationships of Pt-WOx/Al2O3 Prepared with Different W Contents and Pretreatment Conditions for Glycerol Conversion to 1,3-Propanediol9
A Novel Silica Immobilised Acidic Ionic Liquid [BMIM][AlCl4]as an Effective Catalyst for Biscoumarine Synthesis9
Recent Progression of Flower Like ZnSe@MoSe2 Designed as an Electrocatalyst for Enhanced Supercapacitor Performance9
Influence of the Nature of the Promoter in NiO Catalysts on the Selectivity to Olefin During the Oxidative Dehydrogenation of Propane and Ethane9
Anisole Hydrodeoxygenation: A Comparative Study of Ni/TiO2-ZrO2 and Commercial TiO2 Supported Ni and NiRu Catalysts8
Photocatalytic Degradation of Mixed Dyes in Aqueous Phase by MgAlTi and ZnAlTi Mixed Oxides8
Ag2O–Al2O3–ZrO2 Trimetallic Nanocatalyst for High Performance Photodegradation of Nicosulfuron Herbicide8
Effect of Au Addition on the Catalytic Performance of CuO/CeO2 Catalysts for CO2 Hydrogenation to Methanol8
CO2 Reforming of CH4 on Mesoporous Alumina-Supported Cobalt Catalyst: Optimization of Lanthana Promoter Loading8
Combination of Low- and Medium-Temperature Catalysts for the Selective Catalytic Reduction of NOx with NH38
Solvothermal Synthesis of Mesoporous TiO2 Using Sodium Dodecyl Sulfate for Photocatalytic Degradation of Methylene Blue8
Effect of Sc3+/V5+ Co-Doping on Photocatalytic Activity of TiO28
Deactivating and Non-Deactivating Coking Found on Ni-Based Catalysts during Combined Steam-Dry Reforming of Methane8
Synthesis and Characterization of Ti-Nb2O5 Catalysts for Discoloration Reaction of Bromophenol Blue and Indigo Carmine Dyes8
Coral-Reef Shaped Mesoporous Silica Obtained from Coal Fly Ash with High Adsorption Capacity8
CuCe-Ferrite/TiO2 Nanocomposite as an Efficient Magnetically Separable Photocatalyst for Dye Pollutants Decolorization8
High Effective Composite RGO/TiO2 Photocatalysts to Degrade Isopropanol Pollutant in Semiconductor Industry8
Alternative for the Treatment of Leachates Generated in a Landfill of Norte de Santander–Colombia, by Means of the Coupling of a Photocatalytic and Biological Aerobic Process8
The Role of Zeolite Framework in Zeolite Stability and Catalysis from Recent Atomic Simulation8
Effect of Co-catalyst (CuO, CoO or NiO) on Bi2O3–TiO2 Structures and Its Impact on the Photocatalytic Reduction of 4-nitrophenol8
Synthesis of Ni/GO-TiO2 composites for the photocatalytic hydrogen production and CO2 reduction to methanol8
Novel Fabrication of Photoactive CuO/HY Zeolite as an Efficient Catalyst for Photodecolorization of Malachite Green8
Electrocatalytic Decomposition of Formic Acid Catalyzed by M-Embedded Graphene (M = Ni and Cu): A DFT Study8
Influence of the Preparation Method of Au, Pd, Pt, and Rh/TiO2 Nanostructures and Their Catalytic Activity on the CO Oxidation at Low Temperature8
Enzyme Immobilized Nanomaterials: An Electrochemical Bio-Sensing and Biocatalytic Degradation Properties Toward Organic Pollutants8
QM/MM Study of the Mechanism of the Noncanonical S-Cγ Bond Scission in S-Adenosylmethionine Catalyzed by the CmnDph2 Radical Enzyme8
Catalytic Production of Renewable Hydrogen for Use in Fuel Cells: A Review Study8
Radial Basis Function Neural Network Model Prediction of Thermo-catalytic Carbon Dioxide Oxidative Coupling of Methane to C2-hydrocarbon8
Evaluating the Activity and Stability of Perovskite LaMO3-Based Pt Catalysts in the Aqueous Phase Reforming of Glycerol8
Photocatalytic Partial Oxidation of Tyrosol: Improving the Selectivity Towards Hydroxytyrosol by Surface Fluorination of TiO27
Design and Applications of Enzyme-Linked Nanostructured Materials for Efficient Bio-catalysis7
Heterogeneous Photocatalytic Degradation of Ibuprofen Over TiO2–Ag Supported on Activated Carbon from Waste Tire Rubber7
Electrochemical Enhancement of Binary CuSe2@MoSe2 Composite Nanorods for Supercapacitor Application7
The Role of Co-ZSM-5 Catalysts in Aerobic Oxidation of Ethylbenzene7
Characterization and Evaluation of Copper Slag as a Bifunctional Photocatalyst for Alcohols Degradation and Hydrogen Production7
In-Silico Screening the Nitrogen Reduction Reaction on Single-Atom Electrocatalysts Anchored on MoS27
An Overview of Graphene-Based 2D/3D Nanostructures for Photocatalytic Applications7
Dehydrogenation of 2,3-Butanediol to 3-Hydroxybutanone Over CuZnAl Catalysts: Effect of Lithium Cation as Promoter7
A Comparison of Experimental Procedures for the Application of Infrared Spectroscopy to Probe the Surface Morphology of an Alumina-Supported Palladium Catalyst7
Designing robust nano-biocatalysts using nanomaterials as multifunctional carriers - expanding the application scope of bio-enzymes7
A Novel Carbon-Resistant Perovskite Catalyst for Hydrogen Production Using Methane Dry Reforming7
Fabrication of Nanostructure Electrochemical Sensor Based on the Carbon Paste Electrode (CPE) Modified With Ionic Liquid and Fe3O4/ZIF-67 for Electrocatalytic Sulfamethoxazole Detection7
Synthesis of Peroxidase-Like V2O5 Nanoparticles for Dye Removal from Aqueous Solutions7
Photocatalytic Composite Nanomaterial and Engineering Solution for Inactivation of Airborne Bacteria7
The Application of Attenuated Total Reflection Infrared Spectroscopy to Investigate the Liquid Phase Hydrogenation of Benzaldehyde Over an Alumina-Supported Palladium Catalyst7
Surface Acidity/Basicity and Oxygen Defects of Metal Oxide: Impacts on Catalytic Performances of CO2 Reforming and Hydrogenation Reactions7
Vibrational Properties of CO Adsorbed on Au Single Atom Catalysts on TiO2(101), ZrO2(101), CeO2(111), and LaFeO3(001) Surfaces: A DFT Study7
Toward E-selective Olefin Metathesis: Computational Design and Experimental Realization of Ruthenium Thio-Indolate Catalysts7
Sol–gel Fe/TiO2 Magnetic Catalysts Applied to Selenium Photoreduction7
Simultaneous Hydrogen Production and Acetic Acid Degradation by Heterogeneous Photocatalysis using a Metallurgical Waste as Catalyst7
Superiority of the (100) Over the (111) Facets of the Nitrides for Hydrogen Evolution Reaction7
RETRACTED ARTICLE: Vapor Phase Conversion of Furfural to Valuable Biofuel and Chemicals Over Alumina-Supported Catalysts: Screening Catalysts7
Photocatalytic hydrogen production using FeTiO3 concentrates modified by high energy ball milling and the presence of Mg precursors7
Catalysis by Imaging: From Meso- to Nano-scale7
Recent Advancement in Pd-Decorated Nanostructures for Its Catalytic and Chemiresistive Gas Sensing Applications: A Review7
Combination of Cu/ZnO Methanol Synthesis Catalysts and ZSM-5 Zeolites to Produce Oxygenates from CO2 and H27
Synthesis and Characterization of Aluminophosphates Type-5 and 36 Doubly Modified with Si and Zn and Its Catalytic Application in the Reaction of Methanol to Hydrocarbons (MTH)7
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