Effect of Basic Promoters on Porous Supported Alumina Catalysts for Acetins Production

Article Physics, Condensed Matter

Design and characterization of single bilayer ZnO/Al2O3 film by ultrasonically spray pyrolysis and its application in photocatalysis

Meryem Polat Gonullu

Summary: Single bilayer ZnO/Al2O3 films were successfully designed and produced by ultrasonically spray pyrolysis technique. The films exhibited improved photocatalytic performance, which was correlated with the film design.

MICRO AND NANOSTRUCTURES (2022)

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Article Chemistry, Physical

Influence of the Metal Incorporation into Hydroxyapatites on the Deactivation Behavior of the Solids in the Esterification of Glycerol

Gabriela Mota et al.

Summary: This study examined the effects of metal incorporation into hydroxyapatites on the deactivation behavior of the solids in the esterification of glycerol reaction. The results showed that hydroxyapatites with Cu ions exhibited superior catalytic performance and reusability compared to those with Co and Ni ions. The stability of Cu ions in the hydroxyapatite lattice and the presence of isolated Cu2+ sites played important roles in enhancing glycerol conversion.

CATALYSTS (2022)

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Article Engineering, Chemical

Sulfated-Alumina-Catalyzed Triacetin Synthesis: An Optimization Study of Glycerol Esterification

Felipe Baiao Ferreira et al.

Summary: The catalytic activity of sulfated gamma-Al2O3 was evaluated for glycerol esterification using response surface methodology. The study determined the significant factors and optimized the reaction conditions to achieve the highest yield.

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH (2022)

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Review Chemistry, Multidisciplinary

A review on catalytic role of heterogeneous acidic catalysts during glycerol acetylation to yield acetins

Km Abida et al.

Summary: Glycerol is a versatile compound used in various industries like food, paint, and pharmaceutical. By utilizing the excess glycerol produced by the biodiesel industry, it can be used to manufacture value-added products such as acetins. Acetins have diverse applications in different fields such as cosmetics, fuel additives, pharmaceuticals, leather, and food processing. However, the use of homogeneous acid catalysts in producing acetins has limitations due to corrosiveness, non-reusability, and difficulty in separation. To address these issues, researchers have been studying heterogeneous acidic catalysts that can be easily separated and reused. However, there are still challenges such as low conversion levels and catalyst deactivation that need to be overcome.

JOURNAL OF THE INDIAN CHEMICAL SOCIETY (2022)

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Review Biochemistry & Molecular Biology

Current Trends in Acetins Production: Green versus Non-Green Synthesis

Bakht Zada et al.

Summary: To utilize excess glycerol from the biodiesel industry, researchers are developing innovative methods to transform it into valuable chemicals. One strategy is to convert glycerol into acetins, which have wide applications in various industries. Acetins can be synthesized through chemical or biological methods. Although the chemical methods are efficient and productive, they are non-green, while biological processes are environmentally friendly but less productive and require further effort for commercialization.

MOLECULES (2022)

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Article Environmental Sciences

Highly efficient catalytic ozonation for ammonium in water upon ?-Al2O3@ Fe/Mg with acidic-basic sites and oxygen vacancies

Dongmin Liang et al.

Summary: The study focuses on the catalytic ozonation of ammonium nitrogen using composite catalysts. The results show that the γ-Al2O3@Fe/Mg composite catalyst exhibits high efficiency and selectivity in the ozonation reaction. The mechanism of ammonium nitrogen removal is also explored, highlighting the role of acidic-basic sites and oxygen vacancies.

SCIENCE OF THE TOTAL ENVIRONMENT (2022)

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Review Chemistry, Physical

Chemicals Production from Glycerol through Heterogeneous Catalysis: A Review

Parvaneh Koranian et al.

Summary: The utilization of biofuels from renewable sources is becoming increasingly important due to their advantages in reducing fossil fuel consumption and preventing global warming. This review focuses on the conversion of glycerol, a by-product of biodiesel production, into valuable products through various catalytic pathways. The knowledge of catalysts, reaction pathways, and operating parameters are crucial for achieving higher glycerol conversion and desired product selectivity.

CATALYSTS (2022)

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Article Chemistry, Physical

Low-temperature methanol synthesis via (CO2 + CO) combined hydrogenation using Cu-ZnO/Al2O3 hybrid nanoparticle cluster

Thanh Truc Nguyen Hoang et al.

Summary: The conversion of CO2 into valuable fuel or chemical feedstock through hydrogenation to methanol is important for sustainable technological development. This study proposes a combined (CO2 + CO) hydrogenation process for methanol production and develops Cu-based hybrid catalysts to enhance catalytic performance. The results demonstrate that incorporating CO into the CO2 hydrogenation process can significantly increase methanol yield at relatively low temperature and moderate pressure.

APPLIED CATALYSIS A-GENERAL (2022)

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Article Engineering, Multidisciplinary

Bio-additives from glycerol acetylation with acetic acid: Chemical equilibrium model

Federico M. Perez et al.

Summary: This work studied the chemical equilibrium of glycerol acetylation with acetic acid to form different acetylglycerols and determined the physicochemical and thermodynamic properties of these compounds. The results showed that high conversions and yields can be achieved under certain conditions.

RESULTS IN ENGINEERING (2022)

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Article Chemistry, Applied

Cooperative bimetallic catalyst for thio-etherification reaction prepared by crystal-facet engineering of γ-Al2O3 support

Lei Wang et al.

Summary: This study demonstrates a novel approach of tuning crystal facet engineering on γ-Al2O3 to expose new facets for improved catalytic performance. By selectively depositing and sulfiding metal oxides NiOx and MoOx on the respective facets, a NiS2-MoS2/Al2O3 catalyst is formed with substantially enhanced activity for thio-etherification reaction. The cooperative catalysis from the newly exposed facets shows superior activity over conventional catalysts, highlighting the potential for rational design of high performance catalysts.

CATALYSIS TODAY (2021)

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Article Chemistry, Physical

A comparative study of Ni catalysts supported on Al2O3, MgO–CaO–Al2O3 and La2O3–Al2O3 for the dry reforming of ethane

Anastasios I. Tsiotsias et al.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2021)

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Article Energy & Fuels

Conversion of renewable feedstock to bio-carbons dedicated for the production of green fuel additives from glycerol

Anna Malaika et al.

Summary: Sulfonated bio-carbon samples were prepared using two different methods and showed excellent catalytic performance in the esterification reaction of glycerol with acetic acid, achieving high conversion and satisfactory selectivity. The prepared carbon materials retained their activity after multiple cycles, and there was a correlation between catalyst performance and the concentration of -SO3H groups.

FUEL (2021)

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Article Chemistry, Physical

Ni-In Synergy in CO2 Hydrogenation to Methanol

Jiadong Zhu et al.

Summary: This study investigates the promotion of Ni on In2O3 and optimization of NiO-In2O3 catalyst for CO2 hydrogenation. Ni facilitates the synthesis of CH3OH by reducing the dissociation barrier of H2, leading to reduced activation energy for CO2 hydrogenation. The interaction between Ni cations and In2O3 at low NiO loading enhances the surface density of oxygen vacancy, promoting the hydrogenation of adsorbed CO2 on O-v.

ACS CATALYSIS (2021)

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Article Energy & Fuels

Synthesis of fuel bioadditive by esterification of glycerol with acetic acid over hydrophobic polymer-based solid acid

Ronglin Mou et al.

Summary: In this study, a series of polydivinylbenzene-based solid acids (PDS) with different structural performances were prepared and utilized as catalysts for the acetylation of glycerol with acetic acid to produce DAG and TAG. PDS-THF prepared in tetrahydrofuran solvent exhibited the highest catalytic activity, converting glycerol almost completely into glyceryl acetates with a combined selectivity of 88.6% under optimal conditions. The superior catalytic performance of PDS-THF was attributed to the synergism of abundant acidic sites, suitable acidic site density, and super hydrophobicity.

FUEL (2021)

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Article Chemistry, Applied

A comparative study on porous solid acid oxides as catalysts in the esteri fication of glycerol with acetic acid

Antonio B. S. Neto et al.

CATALYSIS TODAY (2020)

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Article Chemistry, Applied

Influence of alumina precursor on silicon capacity of NiMo/γ-Al2O3 guard bed catalysts for gas oil hydrotreating

K. A. Nadeina et al.

CATALYSIS TODAY (2020)

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Article Chemistry, Physical

Acetylation of glycerol using MgO-CaO catalysts with different CaO loadings

Ma. Elena Manriquez-Ramirez et al.

REACTION KINETICS MECHANISMS AND CATALYSIS (2020)

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Article Energy & Fuels

Combined promoting effect of molybdenum on the bimetallic Al2O3-La2O3 catalysts for NOx reduction by CO

Joao Pedro S. Nascimento et al.

FUEL (2020)

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Article Green & Sustainable Science & Technology

Hydrogen production via steam reforming of glycerol over Rh/γ-Al2O3 catalysts modified with CeO2, MgO or La2O3

N. D. Charisiou et al.

RENEWABLE ENERGY (2020)

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Article Engineering, Chemical

Glycerol Acetylation with Propionic Acid Using Iron and Cobalt Oxides in Al-MCM-41 Catalysts

Fabio R. Tentor et al.

BULLETIN OF CHEMICAL REACTION ENGINEERING AND CATALYSIS (2020)

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Review Chemistry, Physical

Recent Advances in Glycerol Catalytic Valorization: A Review

Manuel Checa et al.

CATALYSTS (2020)

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Article Chemistry, Physical

One-Pot Synthesis of MeAl2O4 (Me = Ni, Co, or Cu) Supported on γ-Al2O3 with Ultralarge Mesopores: Enhancing Interfacial Defects in γ-Al2O3 To Facilitate the Formation of Spinel Structures at Lower Temperatures

Alexandre A. S. Goncalves et al.

CHEMISTRY OF MATERIALS (2018)

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Article Spectroscopy

Raman studies of nanocomposites catalysts: temperature and pressure effects of CeAl, CeMn and NiAl oxides

Antonio N. da Silva et al.

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY (2018)

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Article Materials Science, Multidisciplinary

Synthesis of highly porous alumina-based oxides with tailored catalytic properties in the esterification of glycerol

Jose Vitor Costa do Carmo et al.

JOURNAL OF MATERIALS RESEARCH (2018)

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Article Chemistry, Physical

Understanding the role of Keggin type heteropolyacid catalysts for glycerol acetylation using toluene as an entrainer

S. S. Kale et al.

APPLIED CATALYSIS A-GENERAL (2016)

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Article Biotechnology & Applied Microbiology

Esterification of Glycerol with Acetic Acid over Highly Active and Stable Alumina-based Catalysts: A Reaction Kinetics Study

S. A. Rane et al.

CHEMICAL AND BIOCHEMICAL ENGINEERING QUARTERLY (2016)

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Article Energy & Fuels

Reactive Adsorption Desulfurization of Fluidized Catalytically Cracked (FCC) Gasoline over a Ca-Doped Ni-ZnO/Al2O3-SiO2 Adsorbent

Feng Ju et al.

ENERGY & FUELS (2016)

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Article Physics, Applied

Raman scattering and photoluminescence investigations of N doped ZnO thin films: Local vibrational modes and induced ferromagnetism

Kajal Jindal et al.

JOURNAL OF APPLIED PHYSICS (2016)

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Article Chemistry, Physical

The ZnXZr1-XO2-y solid solution on m-ZrO2: Creating 0 vacancies and improving the m-ZrO2 redox properties

Leydi del R. Silva-Calpa et al.

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL (2016)

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Article Chemistry, Applied

Green approach in the sol-gel synthesis of defect free unsupported mesoporous alumina films

Gajanan B. Kunde et al.

MICROPOROUS AND MESOPOROUS MATERIALS (2016)

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Article Chemistry, Organic

Synthesis of nitriles from amines using nanoscale Co3O4-based catalysts via sustainable aerobic oxidation

Kishore Natte et al.

ORGANIC & BIOMOLECULAR CHEMISTRY (2016)

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Article Acoustics

Sono-synthesis and characterization of bimetallic Ni-Co/Al2O3-MgO nanocatalyst: Effects of metal content on catalytic properties and activity for hydrogen production via CO2 reforming of CH4

Mozaffar Abdollahifar et al.

ULTRASONICS SONOCHEMISTRY (2016)

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Article Chemistry, Physical

Binary Oxides with Defined Hierarchy of Pores in the Esterification of Glycerol

Nuryana Ferreira Alves et al.

CATALYSTS (2016)

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Article Chemistry, Multidisciplinary

Acetylation of glycerol over bimetallic Ag-Cu doped rice husk silica based biomass catalyst for bio-fuel additives application

R. Jothi Ramalingam et al.

INTERNATIONAL JOURNAL OF INDUSTRIAL CHEMISTRY (2016)

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Review Chemistry, Multidisciplinary

Catalytic role of solid acid catalysts in glycerol acetylation for the production of bio-additives: a review

Pei San Kong et al.

RSC ADVANCES (2016)

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Article Engineering, Chemical

Hydrogenolysis of glycerol aqueous solution to glycols over Ni-Co bimetallic catalyst: effect of ceria promoting

Tao Jiang et al.

APPLIED PETROCHEMICAL RESEARCH (2016)

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Article Chemistry, Physical

Graphene oxide as a facile solid acid catalyst for the production of bioadditives from glycerol esterification

Xiaoqing Gao et al.

CATALYSIS COMMUNICATIONS (2015)

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Article Chemistry, Physical

Sulfur adsorption and release properties of bimetallic Pd-Ni supported catalysts

Yulia Hilli et al.

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL (2015)

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Article Chemistry, Multidisciplinary

Physisorption of gases, with special reference to the evaluation of surface area and pore size distribution (IUPAC Technical Report)

Matthias Thommes et al.

PURE AND APPLIED CHEMISTRY (2015)

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Article Chemistry, Physical

Characterization and catalytic performances of copper and cobalt-exchanged hydroxyapatite in glycerol conversion for 1-hydroxyacetone production

Davi C. Carvalho et al.

APPLIED CATALYSIS A-GENERAL (2014)

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Article Chemistry, Multidisciplinary

Nanosized Pt-containing Al2O3 as an efficient catalyst to avoid coking and sintering in steam reforming of glycerol

Davi C. Carvalho et al.

RSC ADVANCES (2014)

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Article Energy & Fuels

Catalytic characteristics and parameters optimization of the glycerol acetylation over solid acid catalysts

Limin Zhou et al.

FUEL (2013)

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Article Chemistry, Physical

Screening of different solid acid catalysts for glycerol acetylation

Maria Luisa Testa et al.

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL (2013)

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Article Materials Science, Multidisciplinary

4,6-Dimethyl-dibenzothiophene conversion over Al2O3-TiO2-supported noble metal catalysts

Sara Nunez et al.

MATERIALS CHEMISTRY AND PHYSICS (2011)

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Article Physics, Multidisciplinary

Theoretical studies of the EPR parameters for Ni2+ and Co+ in MgO

Zhi- Hong Zhang et al.

BRAZILIAN JOURNAL OF PHYSICS (2010)

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Article Chemistry, Applied

Synthesis, characterization, and activity in transesterification of mesoporous Mg-Al mixed-metal oxides

Jonggol Tantirungrotechai et al.

MICROPOROUS AND MESOPOROUS MATERIALS (2010)

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Article Chemistry, Physical

Porous nickel MCFC cathode coated by potentio statically deposited cobalt oxide - II. Structural and morphological behavior in molten carbonate

M. J. Escudero et al.

JOURNAL OF POWER SOURCES (2006)

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Article Chemistry, Applied

Preparation of MgO-Al2O3 binary gel system with mesoporous structure

P Kirszensztejn et al.

MICROPOROUS AND MESOPOROUS MATERIALS (2006)

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Article Chemistry, Physical

The state of (K)(Ni)Mo/γ-Al2O3 catalysts after water-gas shift reaction in the presence of sulfur in the feed:: XPS and EPR study

D Nikolova et al.

APPLIED CATALYSIS A-GENERAL (2006)

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Article Chemistry, Physical

In situ XRD, Raman, and TPR studies of CuO/Al2O3 catalysts for CO oxidation

MF Luo et al.

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL (2005)

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Article Chemistry, Physical

Structures and acid-base properties of La/Al2O3 -: Role of La addition to enhance thermal stability of γ-Al2O3

T Yamamoto et al.

CHEMISTRY OF MATERIALS (2003)

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Effect of Basic Promoters on Porous Supported Alumina Catalysts for Acetins Production

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