Heterogeneous catalyst

Ebook "Structure and reactivity of metals in zeolite materials" provides the reader with the most up-to-date and relevant knowledge on the reactivity of metals located in zeolite materials, either in framework or extra-framework positions, and the way it is connected with the nature of the chemical environment provided by the host.

316p tracanhphuonghoa1007 22-04-2024 5 3   Download

Ebook "Transformation of carbon dioxide to formic acid and methanol" explains the principles and fundamentals of carbon dioxide utilization and highlights the transformation to fuels and value-added chemicals such as formic acid and methanol. It is divided into six chapters, including an introduction to the basics of CO2 utilization and transformation of CO2 to formic acid and methanol with homogeneous and heterogeneous catalysts, respectively.

128p tracanhphuonghoa1007 22-04-2024 4 3   Download

Ebook "Novel catalysts in advanced oxidation of organic pollutants" summarizes the role of certain catalysts and associated processes that are involved in the reduction or elimination of hazardous substances from wastewater and the exploitation of renewable raw materials. The authors begin by providing a summary of the most recent developments in catalysts used in the advanced oxidation of organic pollutants in aqueous phase. Advanced Oxidation Processes (AOPS) are described in terms of homogeneous and heterogeneous catalysts.

69p tracanhphuonghoa1007 22-04-2024 4 3   Download

Ebook "Reaction pathways and mechanisms in thermocatalytic biomass conversion I: Cellulose structure, depolymerization and conversion by heterogeneous catalysts" mainly focuses on the current understanding of the reaction pathways and mechanisms involved in several important catalytic conversions of cellulose and carbohydrates.

268p tracanhphuonghoa1007 22-04-2024 3 2   Download

Ebook "Heterogeneous catalysis and its industrial applications" aims to introduce the basic concepts involved in industrial catalytic processes. It is profusely illustrated with experimental results with the main objective of guiding how to select a suitable catalyst for specific processes. The book is divided in two parts. In the first part the basic concepts are addressed, regarding the existing theories, activity patterns and adsorption-desorption phenomena.

382p tudohanhtau1006 29-03-2024 2 1   Download

Ebook "Polyoxomolybdates as green catalysts for aerobic oxidation" describes the importance of the selective oxidation of alcohols and advantages of heterogeneous catalysts over conventional catalysts, use of environmentally benign oxidants, and the design of selective catalysts by tailoring of polyoxometalates at the molecular level. Chapter 2 describes synthesis, characterization 11-molybdophosphate based supported materials and their use as heterogeneous catalysts for oxidation of alcohols with molecular oxygen under solvent free mild reaction condition.

63p tudohanhtau1006 29-03-2024 1 1   Download

Ebook "Electron microscopy in heterogeneous catalysis (Series in Microscopy in materials science)" addresses a number of issues that are fundamental to the understanding of heterogeneous catalysis by oxides and supported metals. The properties of a catalyst are governed by its microstructure and chemistry on an atomic scale, and electron microscopy methods are essential to directly analyze these properties.

246p coduathanh1122 27-03-2024 6 1   Download

Ebook "Surface and interfacial organometallic chemistry and catalysis" discuss the molecular design, the preparation, the characterisation and the catalytic applications of well-defined oxides and metal particles. The readers will acquire a molecular understanding of heterogeneous catalysis, which will help them develop a critical view and which will attract them to study this fascinating field.

296p coduathanh1122 27-03-2024 3 1   Download

Part 2 book "Elements of chemical reaction engineering" includes content: Steady state nonisothermal reactor design, unsteady state nonisothermal reactor design, catalysis and catalytic reactors, exteernal diffusion effects on heterogeneous reactions, diffusion and reaction in porous catalysts, distributions of residence times for chemical reactors, models for nonideal reactors.

546p muasambanhan09 12-03-2024 1 0   Download

Part 2 book "Chemical reaction engineering - Essentials, exercises and examples" includes content: Catalysis - Analyzing variables influencing the catalytic properties; ideal reactors, specific reactors; comparison of reactors; combination of reactors; transport phenomena in heterogeneous systems; catalyst deactivation; exercises reactors and heterogeneous reactors,... and other contents.

429p muasambanhan09 12-03-2024 3 1   Download

In this study, methyl ester was produced through the transesterification of UCO using calcined eggshell as a heterogeneous base catalyst. The objectives of this study were to: (a) investigate the production of a renewable catalyst through eggshell calcination; (b) assess the effect of MeOH/UCO molar ratio, catalyst/ UCO catalyst content, and reaction temperature on the ester content in biodiesel; and (c) use response surface methodology (RSM) to design, analyze, and optimize experimental conditions.

8p vibego 02-02-2024 5 1   Download

Part 2 book "Chemical reaction engineering" includes content: Heterogeneous reactions - introduction; solid catalyzed reactions; the packed bed catalytic reactor; reactors with suspended solid catalyst, G/L eactions on solid catalyst - trickle beds, slurry reactors, three phase fluidized beds; enzyme fermentation; microbial fermentation - introduction and overall picture; substrate limiting microbial fermentation; product limiting microbial fermentation,... and orther contents.

302p muasambanhan06 03-02-2024 3 1   Download

In this paper, we discuss the efficiency of using a Fe2V4O13 catalyst in a heterogeneous Fenton-like process for the degradation and mineralization of Ind. We examined various factors that influence the reaction, such as the initial pH of the reaction mixture, the initial concentration of hydrogen peroxide, the amount of the Fe2V4O13 catalyst, and the reaction temperature was investigated.

9p vijeff 30-11-2023 5 2   Download

The heterogeneous recyclable catalyst, Cu-Fe hydrotalcite, was synthesized by coprecipitation, activated at 200oC and then successfully applied in Aldol reaction. This procedure also exhibited efficiency in the total synthesis of Abhexone, a flavor with high demand in the food and cosmetic industry.

9p viengels 25-08-2023 6 3   Download

In this study, a composite material (ACS) was successfully synthesized from activated carbon (AC) derived from soybean curd and sludge from the supply water treatment process using FeCl3. Subsequently, the ACS was employed as a heterogeneous catalyst for the degradation of Paracetamol (PRC) in solutions under conditions of the Fenton process.

9p vicedric 08-02-2023 6 1   Download

The ketalization reaction of glycerol with acetone for solketal formation was performed using a gel-type ion exchange resin, Indion 225H in a solvent-free medium. The experimental parameters molar ratio, catalyst loading, rate of stirring, and temperature were analyzed and evaluated for their impact on the conversion of glycerol. A kinetic model based on the Langmuir–Hinshelwood–Hougen– Watson (LHHW) equation described the kinetics of the heterogeneous system.

11p lyhuyenthu 31-01-2023 7 2   Download

The cross-linked microbeads with average diameter of 106–300 μm, [poly(EGDMA-MATrp)], were obtained by copolymerization reaction of N-methacryloyl-L-(+)-tryptophan methyl ester (MATrp) with ethylene glycol dimethacrylate (EGDMA) and successfully applied as a heterogeneous catalyst in conjugate addition reaction of nitromethane to substituted 2-iminochromenes in aqueous media. A variety of 2-amino-4-(nitromethyl)-4H-chromene-3-carbonitriles has been synthesized in good yields. Polymeric microbeads were very durable and reused 5 times without a significant loss of activity.

9p lyhuyenthu 31-01-2023 3 1   Download

Analytical characterization and evaluation of performance of zeolite catalysts are normally done under the assumption of a homogeneous batch. However, it is known that in the same batch particles of the zeolite ZSM-5 can be very different one from another, regarding their aluminum content and catalytic performance.

5p vironald 15-12-2022 4 2   Download

The final product was characterized by IR, Raman and XRD spectroscopic methods illustrating the presence of pure α-Fe2O3. SEM images of this material revealed a homogeneous morphology of microcube Fe2O3 with a size of about 500 nm. The catalytic activity of cubic Fe2O3 was investigated on the degradation of methylene blue in a heterogeneous Fenton system.

6p vipatriciawoertz 30-05-2022 5 1   Download

A poly(4-vinylpyridine)-supported Brønsted ionic liquid was easily prepared from its starting materials and used as a novel, highly efficient, and reusable heterogeneous catalytic system for the synthesis of 4,4’-(arylmethylene)bis(3- methyl-1-phenyl-1H-pyrazol-5-ols) from the condensation reaction between aromatic aldehydes and 2 equivalents of 3- methyl-l-phenyl-5-pyrazolone.

9p langthannam 29-12-2021 7 0   Download