Characterization of catalysts

In this research, the nanosized Fe2V4O13 complex oxide material was synthesized by the hydrothermal method. Its structure, morphology characterization, and other properties were determined using X-ray, SEM, EDX, and DTA-TG methods.

5p vikwong 29-09-2024 2 1   Download

In this study, perovskite BaTiO3 and SrTiO3 catalysts were prepared using the sol-gel method for oxidative coupling of methane (OCM). Characterization of catalysts was investigated by X-ray diffraction for crystal properties, physical N2 adsorption to determine specific surface area, and temperatureprogrammed techniques to examine the redox properties and acid–base strength.

6p vikwong 29-09-2024 1 1   Download

A porous crytalline metal-organic framework Fe3O(BPDC)3 was synthesized, and its properties were characterized by various techniques, including X-ray powder diffraction (PXRD), Fourier transform infrared (FT-IR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and nitrogen physisorption measurements.

8p vikwong 29-09-2024 3 1   Download

In this paper, the Au doped Mn1Co9Ox was investigated for total oxidation of CO. The sol-gel method was applied to prepare this catalyst and some modern analysis methods as XRD, EPR, TPx, SEM were utilized to characterize its properties.

7p vikwong 29-09-2024 4 0   Download

WO3/Ag3VO4 photocatalyst was synthesized for benefiting the visible region of solar spectrum for degradation of antibiotic pollutant. The prepared catalyst was characterized by using scanning electron microscope (SEM), X-ray diffraction (XRD), infrared spectroscopy (IR) and energy-dispersive X-ray spectroscopy (EDX).

6p vikwong 29-09-2024 2 1   Download

This work investigated the modification of MnOx catalysts by doping various metals (e.g., Cu) and supporting them on cordierite honeycomb ceramics using the impregnation method. The catalysts were characterized by BET, XRD, SEM-EDX, and H2-TPR techniques. The Cu1Mn2Ox catalyst exhibited the best catalytic performance, achieving complete oxidation of benzene and toluene at 275°C with a WHSV of 18,000 mL/(g·h).

6p vikwong 29-09-2024 3 1   Download

A series of Mg-Cu-Al hydrotalcite/chitosan materials have been synthesized via a co-precipitation method, in which chitosan is synthesized from chitin extraction from waste shrimp shells. The obtained solids were characterized by XRD, BET, EDX, IR techniques. The materials have a well crystallized hydrotalcite structure and medium surface area.

5p vikwong 29-09-2024 3 1   Download

In this study, we successfully synthesized a bimetallic metal-organic framework material Zn/Co-ZIF to start Peroxymonosulfate (PMS) for organic dye degradation in the water body. Material characterization was evaluated by advanced methods, such as XRD, FT-IR, SEM, EDX, and BET. The influence of different factors on methylene blue (MB) decomposition rate was investigated.

7p vikwong 29-09-2024 3 1   Download

In this study, a CuZnO2/MSU photocatalyst was developed using a simple method and common resources. Characterization through XRD, BET, EDX, TEM, and SEM techniques revealed its worm-hole structure and uniform CuZnO2 distribution. The catalyst exhibited a reduced band gap of 2.4 eV and a substantial surface area of 307 m²/g, facilitating 94% degradation of Ciprofloxacin (CIP) within 4 hours of light exposure.

7p vikwong 29-09-2024 3 1   Download

The quantum dots coated by silica is fluorescence material class with great biocompatibility, low toxicity and water-solubility, that is suitable for bioapplications. This work presents the synthesis of SiO2 coated CdTe/ZnSe (named CdTe) quantum dots (CdTeaSiO2 nanoparticles) via a wet chemmical route called modified Stöber method.

11p tamynhan6 14-09-2020 19 2   Download

A Convenient and green synthesis of 4H-pyran derivatives via one-pot multicomponent reaction of aromatic aldehydes, malononitrile and ethyl acetoacetate using KOH loaded CaO as a catalyst under solvent free condition is reported. The morphology of the catalyst has been characterized by XRD and TEM.

12p tocectocec 25-05-2020 17 0   Download

In this article, magnetically nanoparticles (MNPs) of CuFe2O4 were prepared and characterized using Fourier transform infrared spectroscopy, scanning electron microscopy, X-ray diffraction and transmission electron microscopy techniques.

10p tocectocec 25-05-2020 15 0   Download

In this work, nanoscale bimetallic PtNi, PtCo, PtCu catalysts on carbon Vulcan XC72R as supports were synthesized by reduction method under ultrasonic irradiation. The morphology, structure and specific area of synthesized materials were characterized by X-Ray diffraction (XRD), transmission electron microscopy (TEM). The catalytic activity for oxygen reduction reaction (ORR) of PtM/C was investigated by CV and linear sweep voltammetry (LSV) under simulated fuel cell working conditions.

8p abcxyz123_02 03-03-2020 9 1   Download

Main contents of thesis: Introdution of fuel cell and studies on Pt catalysts and Pt alloy catalysts in PEMFC. Research on synthesis of catalytic materials Pt/C 20% wt. by electroless deposition method and evaluating to influence of experimental parameters such as pH, temperature... in the synthesis process on the properties of catalyst Pt / C 20%wt.

22p xacxuoc4321 09-07-2019 49 4   Download

CuO/TiO2 catalysts for the oxidation of toluene were prepared by impregnation method from copper (II) acetate precusor. The catalysts were characterized by XRD, IR and DTA/TGA.

5p uocvong03 24-09-2015 71 2   Download

Oxidation of benzyl alcohol plays an important role in organic synthesis for the purpose of producing benzandehyde - a valuable chemical intermediates. MCM-41 is an important member of M41S mesoporous materials family. It is proved to be very potential for being used as support materials due to its high specific surface area, thermal-hydrothermal stability, etc.

5p uocvong03 24-09-2015 95 6   Download

Catalytic oxidation of m-xylene was carried out over the copper oxide catalyst loaded on SiO2 300 m2/g. The various techniques were used to characterize the catalysts x-ray diffraction, TPRH2, N2 adsorption-desorption, scanning electron microscopy (SEM), tranmission electron microscopy (TEM) and CO pulse chemisorptions. The results indicate that the impregnated solution concentration exerts an influence on the catalytic activity.

6p uocvong01 24-09-2015 53 4   Download

Preparation, characterization and application of heterogeneous solid base catalyst for biodiesel production from soybean oil has many contents: Preparation of catalyst, haracterization of the catalys, ransesterification of soybean oil and chemicalanalyses, creening of catalyst, atalyst characterizations, fluence of the transesterification reactionconditions,...

9p cscpubka 05-05-2014 113 1   Download

Recovering useful hydrocarbons from sewage sludge using zirconia-supporting iron oxide catalysts was investigated. Zirconia has activity for decomposing water molecules to generate active oxygen and hydrogen species.

6p tuananhhumg 04-11-2013 37 2   Download

A series of ground La(Co,Cu)O3 perovskite-type mixed oxides prepared by reactive grinding has been characterized by X-Ray diffraction (XRD), BET, H2-TPR, O2-TPD, and CO disproportionation. All ground samples show a rather high specific surface area and nanometric particles. The solids were pretreated under H2 atmosphere to provide a finely dispersed Co-Cu phase which is active for the hydrogenation of CO.

11p tuanlocmuido 13-12-2012 40 2   Download