4.7 Article

Influence of Natural Mordenite Activation Mode on Its Efficiency as Support of Nickel Catalysts for Biodiesel Upgrading to Renewable Diesel

相关参考文献

注意:仅列出部分参考文献,下载原文获取全部文献信息。
Article Chemistry, Multidisciplinary

Nickel-Alumina Catalysts for the Transformation of Vegetable Oils into Green Diesel: The Role of Preparation Method, Activation Temperature, and Reaction Conditions

Ioannis Nikolopoulos et al.

Summary: Two nickel alumina catalysts were synthesized by different methods and evaluated for their catalytic efficiency in the transformation of sunflower oil into green diesel. The catalyst prepared by co-precipitation showed higher efficiency due to its higher specific surface area and smaller nickel nanoparticle size compared to the catalyst prepared by wet impregnation. Increasing the activation temperature resulted in larger nickel nanoparticles and decreased catalytic efficiency. The optimized reaction conditions achieved complete transformation of sunflower oil and waste cooking oil into green diesel with high yield.

NANOMATERIALS (2023)

Review Chemistry, Applied

The role of promoters in metallic nickel catalysts used for green diesel production: A critical review

Sotiris Lycourghiotis et al.

Summary: This paper reviews the important contributions of metals and metal oxides as promoters in the production of green diesel using reduced nickel catalysts. The promotion effect includes accelerating green diesel production, shifting the reaction network to the dehydration pathway, reducing C-C hydrogenolysis and fragmentation of triglyceride side chains, and decreasing methanation. The promoting action is achieved through various mechanisms such as increasing the active surface of nickel, forming alloys, intermetallic compounds, and mixed oxides, as well as the synergy between nickel or Ni-Me hydrogenation sites and oxygen vacancies of the second metal oxide. The contribution of each mechanism depends on the type of promoter used.

FUEL PROCESSING TECHNOLOGY (2023)

Article Chemistry, Applied

Quantitative synergy between metal and acid centers over the Ni/Beta bifunctional catalyst for methyl laurate hydrodeoxygenation to bio-jet fuel

Tinghu Wang et al.

Summary: The synergistic effect of metal and acid centers in bifunctional hydrodeoxygenation (HDO) catalyst significantly affects its performance. However, there is a lack of quantitative research on this aspect. In this study, Ni/Beta catalysts were used to convert methyl laurate into bio-jet fuels through HDO. The ratios of metal to acid centers (nNi/nA) were quantitatively used to express the synergistic effect and were correlated to the HDO performance. The results showed that the acid centers are crucial for the efficient transformation of methyl laurate under mild reaction conditions, and a higher nNi/nA ratio improves the selectivity and efficiency of the HDO reaction. This work provides a deeper understanding of the quantitative synergy of active sites in bifunctional HDO catalysts for bio-fuel production.

FUEL PROCESSING TECHNOLOGY (2023)

Article Agricultural Engineering

Photothermal technique-enabled ambient production of microalgae biodiesel: Mechanism and life cycle assessment

Jinshu Huang et al.

Summary: A light-induced photothermal process using a biomass-based catalyst was demonstrated to efficiently produce biodiesel from microalgae lipids at room temperature with a high yield of 96.8%. The process involved interfacial solar heating, which created a local photothermal catalytic system leading to evaporation and removal of water and facilitating the forward reaction. The photothermal catalyst showed higher conversion rate compared to the industrially used catalyst H2SO4 and had energy-saving and environmental advantages.

BIORESOURCE TECHNOLOGY (2023)

Article Energy & Fuels

Anisole Hydrodeoxygenation over Nickel-Based Catalysts: Influences of Solvent and Support Properties

Mustapha Yusuf et al.

Summary: The development of highly active and selective catalysts is crucial for the realization of biofuels and chemicals. In this study, a conventional ZSM-5 zeolite was modified with NaOH, leading to improved catalytic activity and selectivity. The modified catalyst showed great potential for future industrial applications.

ENERGY & FUELS (2023)

Article Chemistry, Physical

Solvent-Driven Selectivity on the One-Step Catalytic Synthesis of Manoyl Oxide Based on a Novel and Sustainable Zeolite Catalyst-Solvent System

Dimitra Makarouni et al.

Summary: The study introduces a novel catalyst-solvent system that enables high-yield and large-scale production of the terpenoid manoyl oxide, with improved selectivity using a substrate-controlled methodology. The research also demonstrates the crucial role of solvents in catalysis, showing a decrease in activation energy barrier in the presence of appropriate solvents. Additionally, the acidity of the catalyst is identified as a key parameter for the process.

CATALYSIS LETTERS (2022)

Review Biotechnology & Applied Microbiology

Opportunities and challenges for the application of biodiesel as automotive fuel in the 21st century

Tafsirul Hassan et al.

Summary: This review covers various aspects of biodiesel, including feedstock, characteristics, production methods, blending techniques, properties, combustion, engine performance, and emission analysis. Although biodiesel is comparable to petrodiesel in many aspects, there are still challenges to be overcome before its large-scale application in the automotive sector, such as compatibility, stability, and the impact on engine wear. Increased focus should also be given to second-generation biodiesel.

BIOFUELS BIOPRODUCTS & BIOREFINING-BIOFPR (2022)

Article Engineering, Chemical

Hydrodeoxygenation of stearic acid to produce diesel-like hydrocarbons: kinetic modeling, parameter estimation and simulation

Mariana Afonso Pinto Pedroza et al.

Summary: Due to the increasing global energy demand and the environmental impact of fossil fuels, there is a growing search for renewable sources to produce alternative biofuels. Green diesel obtained from vegetable oils and fats through hydrotreatment is a promising option that can be integrated into existing refineries. In this study, the kinetics of hydrodeoxygenation of stearic acid, a model compound for triglyceride raw materials, over a NiMo/Al2O3 catalyst was investigated to obtain diesel-range hydrocarbons. Different kinetic models based on assumptions about the adsorption step were evaluated, and the surface reaction limited model based on competitive adsorption with non-dissociate H2 adsorbed showed the best results and was used for process simulation.

CHEMICAL ENGINEERING SCIENCE (2022)

Article Chemistry, Physical

On Stability of High-Surface-Area Al2O3, TiO2, SiO2-Al2O3, and Activated Carbon Supports during Preparation of NiMo Sulfide Catalysts for Parallel Deoxygenation of Octanoic Acid and Hydrodesulfurization of 1-Benzothiophene

Ludek Kaluza et al.

Summary: The effects of different supports on the performance of NiMo sulfide catalysts were investigated. It was found that acidic mesoporous SiO2-Al2O3 exhibited higher activity, while activated carbon support showed outstanding stability.

CATALYSTS (2022)

Article Thermodynamics

Understanding the effects of feedstock blending and catalyst support on hydrotreatment of algae HTL biocrude with non-edible vegetable oil

Poulami Roy et al.

Summary: The performance of cobalt-molybdenum catalysts in the hydrotreating of algae biocrude and carinata oil was investigated. The results showed a synergistic effect in the hydrotreating of the blends, with the yield of the upgraded blend oils higher than the individual parent oils. Sulfided CoMo/DF exhibited superior activity in hydrodeoxygenation reactions, while sulfided CoMo/Al showed high activity in hydrodenitrogenation and hydrodesulfurization reactions.

ENERGY CONVERSION AND MANAGEMENT (2022)

Article Chemistry, Applied

Effect of the preparation method on particle size and reaction selectivity on naphthalene hydrogenation over Ni/H-MOR catalysts

R. Cuevas-Garcia et al.

Summary: The three nickel catalysts supported on mordenite zeolite with the same nickel content of 2 wt.% were prepared using different methods and showed diverse selectivity and activity in naphthalene hydrogenation reactions, with the Ni-DP catalyst displaying the highest hydrogenation activity and relatively slow deactivation rate.

CATALYSIS TODAY (2021)

Article Environmental Sciences

Deoxygenation of Methyl Oleate and Commercial Biodiesel Over W and Ni-W Catalysts

Gagandeep Singh Dhillon et al.

Summary: The enhancement of biodiesel fuel properties through modifying/optimizing fatty ester composition is an area of ongoing research, with catalytic hydrodeoxygenation being a key method. The study conducted in this paper found that using tungsten as a catalyst supported on γ-Al(2)O(3) can effectively convert methyl oleate and biodiesel into green diesel, with factors such as reduction temperature and hydrogen flowrate influencing the activity of the catalyst.

WASTE AND BIOMASS VALORIZATION (2021)

Article Engineering, Chemical

Biodiesel Upgrading to Renewable Diesel over Nickel Supported on Natural Mordenite Catalysts

Konstantina Fani et al.

Summary: In this study, natural mordenite was activated by acid treatment to serve as a catalyst support for Ni catalysts. The catalysts synthesized using the deposition-precipitation method showed the highest efficiency in biodiesel upgrading, with almost complete conversion and production of the highest amount of green diesel. This was attributed to enhanced specific surface area, better nickel dispersion, and reduced carbon deposits on the catalyst surface.

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH (2021)

Article Engineering, Chemical

Cobalt-Alumina Coprecipitated Catalysts for Green Diesel Production

Ioannis Nikolopoulos et al.

Summary: Cobalt-alumina catalysts with high cobalt loading were synthesized, and the most efficient catalyst for green diesel production was found to contain 55 wt% cobalt activated at 500 degrees C. The catalysts exhibited lower performance in the deoxygenation of waste cooking oil compared to sunflower oil, likely due to deactivation caused by coking and pore blockage.

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH (2021)

Article Chemistry, Physical

Hydrodeoxygenation and hydrocracking of oxygenated compounds over CuPd/γ-Al2O3-ZSM-5 catalyst

Mihai Marinescu et al.

Summary: This study focuses on the hydrodeoxygenation/hydrocracking process of oxygenated compounds using a bifunctional catalyst containing copper, palladium, and ZSM-5. The conversion of methyl esters to hydrocarbons is influenced by temperature, with higher temperatures favoring cyclization and aromatization reactions. Overall, the CuPd/gamma-Al2O3-ZSM-5 catalyst plays a crucial role in achieving high yields of alkanes under specific conditions.

REACTION KINETICS MECHANISMS AND CATALYSIS (2021)

Article Chemistry, Physical

Insights into the Influence of ZrO2 Crystal Structures on Methyl Laurate Hydrogenation over Co/ZrO2 Catalysts

Yingdong Zhou et al.

Summary: In the study, it was found that Co/mix-ZrO2 catalyst showed the highest activity and stability for methyl laurate hydrogenation, with the oxygen vacancies and exposed Co crystal planes playing important roles in influencing the reaction.

ACS CATALYSIS (2021)

Article Chemistry, Multidisciplinary

Acid-Alkaline Treatment of Mordenite and Its Catalytic Activity in the Hydrotreatment of Bio-Oil

Febi Yusniyanti et al.

Summary: The study applied acetic acid and sodium hydroxide treatment on mordenite to increase Si/Al ratio and surface area properties, leading to improved catalytic activity. Both acid and alkaline treatments had positive effects on mordenite, expanding its potential applications.

INDONESIAN JOURNAL OF CHEMISTRY (2021)

Article Chemistry, Physical

Developing Nickel-Zirconia Co-Precipitated Catalysts for Production of Green Diesel

Georgios Zafeiropoulos et al.

CATALYSTS (2019)

Article Engineering, Environmental

Kinetic study of hydrodeoxygenation of stearic acid as model compound for renewable oils

Prakhar Arora et al.

CHEMICAL ENGINEERING JOURNAL (2019)

Article Chemistry, Multidisciplinary

Synthesis And Characterization Of CoMo/Mordenite Catalyst For Hydrotreatment Of Lignin Compound Models

Khoirina Dwi Nugrahaningtyas et al.

OPEN CHEMISTRY (2019)

Article Engineering, Environmental

Kinetic modeling of fatty acid methyl esters and triglycerides hydrodeoxygenation over nickel and palladium catalysts

Imane Hachemi et al.

CHEMICAL ENGINEERING JOURNAL (2018)

Article Chemistry, Multidisciplinary

Production of Renewable Light Olefins from Fatty Acid Methyl Esters by Hydroprocessing and Sequential Steam Cracking

Peiyong Sun et al.

ACS SUSTAINABLE CHEMISTRY & ENGINEERING (2018)

Article Chemistry, Multidisciplinary

Hydrocracking of α-Cellulose Using Co, Ni, and Pd Supported on Mordenite Catalysts

Wega Trisunaryanti et al.

INDONESIAN JOURNAL OF CHEMISTRY (2018)

Article Chemistry, Physical

The comparison of Co, Ni, Mo, CoMo and NiMo sulfided catalysts in rapeseed oil hydrodeoxygenation

Ludek Kaluza et al.

REACTION KINETICS MECHANISMS AND CATALYSIS (2017)

Review Thermodynamics

Efficient valorization of biomass to biofuels with bifunctional solid catalytic materials

Hu Li et al.

PROGRESS IN ENERGY AND COMBUSTION SCIENCE (2016)

Review Chemistry, Physical

A Review: Fundamental Aspects of Silicate Mesoporous Materials

Zeid A. ALOthman

MATERIALS (2012)

Article Chemistry, Physical

Desilication of MOR zeolite: Conventional versus microwave assisted heating

V. Paixao et al.

APPLIED CATALYSIS A-GENERAL (2011)

Article Chemistry, Physical

Alkaline treatment on commercially available aluminum rich mordenite

Adri N. C. van Iaak et al.

APPLIED CATALYSIS A-GENERAL (2010)

Article Chemistry, Applied

Dealumination of mordenites with acetic acid and their catalytic activity in the alkylation of cumene

Kyong-Hwan Chung

MICROPOROUS AND MESOPOROUS MATERIALS (2008)