Catalyst characterization

The HKUST-1 was synthesized through a straightforward methodology, and its structure was confirmed by various characterization employing a range of techniques, including X-ray diffraction (XRD), scanning electron microscopy (SEM) with Energy Dispersive X-ray analysis (EDX), and N2 adsorption/desorption.

8p viambani 18-06-2024 3 0   Download

In this study, the photodegradation of MB under visible light irradiation using a novel heterojunction CoWO4/g-C3N4 catalyst was investigated. A series of CoWO4/g-C3N4 composites were synthesized and characterized using various techniques, including XRD, SEM, SEM-EDS, FT-IR, and UV-DRS.

9p viambani 18-06-2024 2 1   Download

Bài giảng Xúc tác - Chương 3: Đặc trưng xúc tác (Catalyst characterization). Chương này cung cấp cho học viên những nội dung gồm: giới thiệu; các tính chất hóa lý tổng quát; các tính chất bề mặt và lỗ xốp; hàm lượng tâm hoạt tính xúc tác;... Mời các bạn cùng tham khảo!

11p mothuahoa 04-05-2024 3 1   Download

This study aims to synthesize and characterize the formation of dihydroxystearic acid (DHSA) from the ring opening of epoxidized oleic acid. The optimal reaction parameters to produce DHSA were found using sulfuric acid as catalyst in which the maximum relative conversion was reached up to 86%. The detection of hydroxyl group was using Fourier Transform Infrared Spectroscopy.

6p dianmotminh02 03-05-2024 2 1   Download

In this study, we synthesized CuCoFe-LDH bilayer hydroxide catalysts in different Cu:Co:Fe ratios (1:1:1; 1:2:1, and 1:3:2) by hydrothermal method and applied them to activate peroxymonosulfate (PMS) for decomposing levofloxacin. The obtained LDH samples were characterized by X-ray diffraction, Fourier-transform infrared spectroscopy, scanning electron microscopy, and energy-dispersive X-ray spectroscopy.

12p viohoyo 25-04-2024 3 2   Download

Ebook "Zeolites in sustainable chemistry: Synthesis, characterization and catalytic applications" is devoted to the new development of zeolitic catalysts with an emphasis on new strategies for the preparation of zeolites, novel techniques for their characterization and emerging applications of zeolites as catalysts for sustainable chemistry, especially in the fields of energy, biomass conversion and environmental protection.

490p tracanhphuonghoa1007 22-04-2024 5 2   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 2 1   Download

Ebook "Characterization and design of zeolite catalysts: Solid acidity, shape selectivity and loading properties" provide us the strong acidity with the fine distribution which enables various useful catalytic reactions. When some metals and cations are loaded in close to the acid sites, these loaded elements show extraordinary characters, and many catalytic reactions proceed thereon. Microporosity provides us a unique property of the shape selectivity, and the excellent selectivity is observed.

189p manmanthanhla0201 26-02-2024 1 1   Download

In ebook "Catalysis with supported size-selected Pt clusters: Fundamental UHV and applied ambient experiments" Florian Schweinberger investigates the influence of the precise size of catalytically active species on reactivity. In order to do this he carries out studies both in UHV and under ambient conditions for supported, size-selected Platium clusters (8-68 atoms). Schweinberger probed the electronic structure, adsorption properties and reactivity of two olefins on surfaces and Pt clusters in the submonolayer range.

231p nhanphanguyet 28-01-2024 4 2   Download

Ebook "Sonochemical production of nanomaterials" discusses the ultrasonic synthesis, characterization and application of various nanoparticles, as well as the ultrasonic synthesis of metal and inorganic nanoparticles such as noble metals, transition metals, semiconductors, nanocomposites, alloys and catalysts. In addition, it describes the engineering of micro- and nanosystems using ultrasound-responsive biomolecules.

67p lamquandat 28-12-2023 4 2   Download

Ebook "Introduction to industrial polypropylene: Properties, catalysts, processes" provide chemists, engineers and students an introduction to the essentials of industrial polypropylene— what it is, how it is made and fabricated, how it is characterized, the markets it serves, and its environmental fate. Technical aspects are described in a straightforward way with minimal discussion of esoteric theory such that a person with a modicum of training in chemistry should be able to grasp.

346p loivantrinh 29-10-2023 5 3   Download

Mesoporous TiO2 mixed with NiTiO3 at various concentrations was synthesized by combining solegel and eco-friendly hydrothermal methods. The properties of the NiTiO3eTiO2 (NTOeTi) photocatalyst were characterized using Х-ray diffraction, Raman spectroscopy, scanning electron microscopy, Fouriertransform infrared spectroscopy, BrunauereEmmetteTeller adsorption, energy dispersive X-ray, and UV evis absorption spectra techniques.

8p viberbers 09-08-2023 7 3   Download

Two copper phyllosilicates were prepared via co-precipitation accompanied by hydrothermal treatment at pH constant. The obtained materials were physically characterized by XRD, H2-TPR, TEM, BET and XPS techniques. The results indicated that Cu(II) ions were successfully intercalated into the phyllosilicate framework at a low Cu/Si molar ratio.

6p viberbers 09-08-2023 4 3   Download

Electroactive poly(1,8-diaminonaphthalene) is known to have a high affinity for metal ions thanks to amine and imine groups in the polymer chain. However, electrochemical sensors based on pristine P(1,8-DAN) have a major drawback concerning its poor electrical conductivity.

11p viannee 02-08-2023 6 3   Download

This study investigates the effect of synthesis methods on the physicochemical properties and catalytic activity of α-MnO2 catalysts in the complete oxidation of isopropanol. The catalysts were synthesized via redox-precipitation reactions by using dropwise and reflux methods and characterized by XRD, SEM, and N2 adsorption-desorption.

4p visteverogers 23-06-2023 12 4   Download

Herein, a performance analysis of La-doped copper-based catalysts (CuO/ZrO2 /La-Al2 O3 ) in methanol steam reforming (MSR) was conducted and compared with a commercial low temperature water-gas shift catalyst (HiFUEL W220) to produce H2 with low CO selectivity. The physicochemical properties of as-obtained catalysts were characterized by N2 adsorption, XRD, and ICP-OES. Effect of calcination temperature (750 ℃ and 1000 ℃) on the properties of mixed oxide support (La-Al2 O3 ) were discussed based on catalytic activity.

12p lyhuyenthu 31-01-2023 5 2   Download

In this research, a combined photocatalytic and biological treatment is proposed for the elimination of pollutants present in textile wastewater using a natural erionite zeolite (PE) and aluminum oxide (PA) synthesized by the sol-gel method as photocatalysts, and solar radiation. Both catalysts were characterized by XRD, SEM, and EDS. For biological treatment two bacterial consortium were used: BC1 (Escherichia coli N16, Serratia k120, Pseudomonas putida B03 and Enterobacter hormaechei), and consortium BC2 (Escherichia coli N16, Serratia Mc107, Enterobacter N9, Enterobacter hormaechei Mc9).

11p lyhuyenthu 31-01-2023 7 2   Download

In this study, TiO2/Carbon aerogel material (TiO2/CA) synthesized by the sol-gel method has improved TiO2 photocatalytic activity by trapping electrons and increasing the specific surface area. The success of material synthesis was characterized by X-ray diffraction (XRD), Nitrogen physisorption, Energy Dispersive X-Ray Analysis (EDS), and Fourier-transform infrared spectroscopy (FTIR).

7p vidumbledore 19-01-2023 14 2   Download

Guar (GG) and locust bean (LBG) galactomannans (GMs) oxidation at C-6 was performed with catalyst TEMPO, in which the reaction progress was monitored by consume of NaOH solution. The products were characterized by spectroscopic analysis, infrared, and H-nuclear magnetic resonance, confirming the presence of aldehydes groups as intermediate of reaction to carboxylic acid.

8p vihermione 06-01-2023 3 2   Download

The preparation of cellulose laurate was investigated through transesterification in 1-allyl-3- methylimidazolium chloride (AmimCl)/dimethyl sulfoxide (DMSO) cosolvent system by using vinyl laurate as an acylation reagent and 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) as an effective catalyst.

8p vihermione 06-01-2023 4 2   Download