Vasile Hulea
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View article: Nickel-aluminosilicate catalysts for ethylene oligomerization: recent scientific progress
Nickel-aluminosilicate catalysts for ethylene oligomerization: recent scientific progress Open
The recent progresses in the ethylene conversion catalyzed by Ni-aluminosilicates, including types of catalysts depending on the support, active sites, oligomerization mechanism and kinetics and catalyst deactivation are examined in this r…
View article: Methyl mercaptan-to-hydrocarbons: Effect of topology of zeolite catalysts
Methyl mercaptan-to-hydrocarbons: Effect of topology of zeolite catalysts Open
International audience
View article: A Comparative Study of Ni-Based Catalysts Prepared by Various Sol–Gel Routes
A Comparative Study of Ni-Based Catalysts Prepared by Various Sol–Gel Routes Open
The use of heterogeneous catalysts to increase the development of green chemistry is a rapidly growing area of research to save industry money. In this paper, mesoporous SiO2-Al2O3 mixed oxide supports with various Si/Al ratios were prepar…
View article: Influence of the Mesoporosity of Hierarchical ZSM-5 in Toluene Alkylation by Methanol
Influence of the Mesoporosity of Hierarchical ZSM-5 in Toluene Alkylation by Methanol Open
Among the different strategies to design highly shape-selective ZSM-5 to obtain para-xylene through toluene alkylation with methanol, the introduction of mesopores to increase reactant and product diffusion has been proposed but barely stu…
View article: Engineering the Morphostructural Properties and Drug Loading Degree of Organic–Inorganic Fluorouracil–MgAl LDH Nanohybrids by Rational Control of Hydrothermal Treatment
Engineering the Morphostructural Properties and Drug Loading Degree of Organic–Inorganic Fluorouracil–MgAl LDH Nanohybrids by Rational Control of Hydrothermal Treatment Open
Layered double hydroxides (LDHs) or hydrotalcite-like compounds have attracted great attention for the delivery of anticancer drugs due to their 2D structure, exhibiting a high surface-to-volume ratio and a high chemical versatility. The d…
View article: Finding the Compromise between Brønsted Acidity and Mesoporosity in Hierarchical ZSM‐5 Zeolites
Finding the Compromise between Brønsted Acidity and Mesoporosity in Hierarchical ZSM‐5 Zeolites Open
Mesoporous ZSM‐5 catalysts were prepared from a commercial ZSM‐5 (Si/Al=15), using a 2‐step micelle‐templating procedure. By varying the NaOH/Si synthesis ratio in the range of 0.3‐0.7, ZSM‐5 catalysts with different textural and acidic pr…
View article: Carbon-Aerogel-Supported Noble-Metal Nanoparticles as Hydrogenation Catalysts
Carbon-Aerogel-Supported Noble-Metal Nanoparticles as Hydrogenation Catalysts Open
We report a one-pot hydrothermal route for the atom-economical biosynthesis of C-aerogel-supported noble-metal nanoparticles. A simple sugar derived from hemicellulose, e.g., xylose, and a natural phenol produced by brown algae, e.g., phlo…
View article: Hydrolytic vs. Nonhydrolytic Sol-Gel in Preparation of Mixed Oxide Silica–Alumina Catalysts for Esterification
Hydrolytic vs. Nonhydrolytic Sol-Gel in Preparation of Mixed Oxide Silica–Alumina Catalysts for Esterification Open
The development of green and sustainable materials for use as heterogeneous catalysts is a growing area of research in chemistry. In this paper, mesoporous SiO2-Al2O3 mixed oxide catalysts with different Si/Al ratios were prepared via hydr…
View article: Hierarchical MFI Zeolite Catalysts: How to Determine Their Textural Properties?-A Comparative Study
Hierarchical MFI Zeolite Catalysts: How to Determine Their Textural Properties?-A Comparative Study Open
It is important to elucidate the role of the surface areas and pore volumes of hierarchical zeolites to understand their behavior as catalysts. Micro-and mesopore surface areas and volumes of the hierarchical MFI (Mobil Five zeolites) were…
View article: Zeolite-based catalysis for isobutene conversion into chemicals and fuel additives. A review
Zeolite-based catalysis for isobutene conversion into chemicals and fuel additives. A review Open
Isobutene (IB), the most reactive molecule in the C4 raffinate, is a raw material of great industrial significance. It is extensively used in the manufacturing process of rubber, fuel additives, fine chemicals, agricultural chemicals, plas…
View article: Determination of Microporous and Mesoporous Surface Areas and Volumes of Mesoporous Zeolites by Corrected <i>t</i>‐Plot Analysis
Determination of Microporous and Mesoporous Surface Areas and Volumes of Mesoporous Zeolites by Corrected <i>t</i>‐Plot Analysis Open
Zeolites are well‐known microporous catalysts involved in many industrial applications. Their microporosity yet impedes diffusion of bulky molecules. To overcome this drawback, zeolites with hierarchical bimodal porosity, e. g. micropores …
View article: Erratum to: Impact of Pore Architecture on the Hydroconversion of Long Chain Alkanes over Micro and Mesoporous Catalysts
Erratum to: Impact of Pore Architecture on the Hydroconversion of Long Chain Alkanes over Micro and Mesoporous Catalysts Open
Erratum
View article: Erratum to: Highly Efficient Mesoporous Mg/γ-Al2O3 Catalysts for Ozonation of Saline Petroleum Effluents
Erratum to: Highly Efficient Mesoporous Mg/γ-Al2O3 Catalysts for Ozonation of Saline Petroleum Effluents Open
Erratum
View article: Mild Oxidation of Organosulfur Compounds with H2O2 over Metal-Containing Microporous and Mesoporous Catalysts
Mild Oxidation of Organosulfur Compounds with H2O2 over Metal-Containing Microporous and Mesoporous Catalysts Open
Mild catalytic oxidation of thioethers and thiophenes is an important reaction for the synthesis of molecules with pharmaceutical interest, as well as for the development of efficient processes able to remove sulfur-containing pollutants f…
View article: Highly Efficient Mesoporous Mg/γ-Al2O3 Catalysts for Ozonation of Saline Petroleum Effluents
Highly Efficient Mesoporous Mg/γ-Al2O3 Catalysts for Ozonation of Saline Petroleum Effluents Open
γ-Al 2 O 3 is promising for catalytic ozonation because it produces HO° radicals. To improve its basicity and/or its oxidative character, highly mesoporous γ-Al 2 O 3 was doped with different metals M alone or in mixture (M = Mg, Ca, Zn, F…
View article: Direct conversion of ethylene to propylene over Ni- and W-based catalysts: An unprecedented behaviour
Direct conversion of ethylene to propylene over Ni- and W-based catalysts: An unprecedented behaviour Open
International audience
View article: Impact of Pore Architecture on the Hydroconversion of Long Chain Alkanes over Micro and Mesoporous Catalysts
Impact of Pore Architecture on the Hydroconversion of Long Chain Alkanes over Micro and Mesoporous Catalysts Open
n -Hexadecane hydroconversion has been investigated in a series of bifunctionnal metal/acid catalysts featuring distinct well-defined pore architectures. The acidic components were prepared from dealuminated Y zeolites with Si/Al of 15 and…
View article: SYNERGISTIC EFFECT OF FUEL AGENTS AND MASS RATIO FOR MORPHO-STRUCTURAL OPTIMIZATION OF MAGNETIC CLAYBASED NANOCOMPOSITES WITH HIGH ADSORPTION CAPACITY
SYNERGISTIC EFFECT OF FUEL AGENTS AND MASS RATIO FOR MORPHO-STRUCTURAL OPTIMIZATION OF MAGNETIC CLAYBASED NANOCOMPOSITES WITH HIGH ADSORPTION CAPACITY Open
The study is focused on creating magnetic mesoporous materials through the insertion of a nickel ferrite into the structure of kaolintype clay.Sol-gel auto-combustion method was employed to synthesize the materials, using glycine and tarta…
View article: P048_0546_ Controlled drug delivery system of natural/synthetic silica structures to the dermis
P048_0546_ Controlled drug delivery system of natural/synthetic silica structures to the dermis Open
The paper is the first communication on an exploratory study of the use of three compounds: bentonite, clinoptilolite and SBA-15 (Santa Barbara Amorphous). The last component, SBA-15, is the cutting-edge result of a chemical synthesis with…
View article: Conversion of Methyl Mercaptan to Hydrocarbons over H-ZSM-5 Zeolite: DFT/BOMD Study
Conversion of Methyl Mercaptan to Hydrocarbons over H-ZSM-5 Zeolite: DFT/BOMD Study Open
Methyl mercaptan-a harmful impurity in natural gas-may be selectively converted into H2S and hydrocarbons [methyl mercaptan to hydrocarbon (M2TH) process], using zeolite catalysts. When M2TH is compared with the well-known MTH (methanol to…