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Journal articles on the topic 'CeO2-γAl2O3 and Fe2O3-γAl2O3 catalys'

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Published: 4 June 2025
Last updated: 1 August 2025

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1

Dr., Tuğba Gürmen Özçelik. "Selective Oxidation of Limonene over γ-Al2O3 Supported Metal Catalyst with H2O2". International Journal of Engineering and Management Research 8, № 4 (2018): 208–12. https://doi.org/10.31033/ijemr.v8i4.13243.

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Liquid phase oxidation of limonene by hydrogen peroxide over the CeO2 and Fe2O3 catalysts supported by γ- Al2O3 was reported. Etly acetate and acetone were used as solvent to investigate the effect of the solvent on the oxidation reaction. The experiments were carried out at 80 °C The conversion of limonene and the selectivities of the carvone were calculated during the 10h reaction time. According to experimental results, maximum conversion of limonene and product selectivity of carvone were obtained with CeO2-γAl2O3 catalyst as 85% and 41%, respectively end of the 10 h reacti
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2

Prada Silvy, Ricardo, та Sathish Kumar Lageshetty. "Conversion of heavy gasoil into ultra-low sulfur and aromatic diesel over NiWRu/TiO2–γAl2O3 catalysts: Role of titanium and ruthenium on improving catalytic activity". Oil & Gas Science and Technology – Revue d’IFP Energies nouvelles 76 (23 грудня 2020): 5. http://dx.doi.org/10.2516/ogst/2020084.

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This contribution deals with about selective conversion of heavy gas oils into middle distillates fuels that meet ultra-low sulfur and aromatic compound quality standards by using a novel NiWRu/TiO2–γAl2O3 catalyst under typical hydrotreatment conditions. A diesel fuel fraction having sulfur, nitrogen and aromatics compound content of about 50 ppm, 10 ppm and 15 v%, respectively, was obtained when the reactor was operated at T = 370 °C, P = 12.4 MPa, LHSV = 0.5 h−1 and H2/hydrocarbon ratio = 800 Nm3/m3. Titanium and ruthenium additives used in the preparation of the NiWRu/TiO2–γAl2O3 catalyst,
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3

Bin Sulayman, Abdulhamid, Nicolas Torres Brauer, and Hugo de Lasa. "A Fluidizable Catalyst for N-Butane Oxidative Dehydrogenation under Oxygen-Free Reaction Conditions." Catalysts 13, no. 12 (2023): 1462. http://dx.doi.org/10.3390/catal13121462.

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This study evaluates the effectiveness of fluidizable VOx/MgO-γAl2O3 catalysts for C4-olefin production via n-butane oxidative dehydrogenation (BODH). Catalysts were prepared via vacuum incipient wetness impregnation and then characterized by employing several techniques such as BET (Brunauer–Emmett–Teller) method, XRD (X-ray diffraction), LRS (laser Raman spectroscopy), XPS (X-ray photoelectron spectroscopy), TPR/TPO (temperature-programmed reduction/temperature-programmed oxidation), NH3-TPD (temperature-programmed desorption), NH3 -desorption kinetics and pyridine-FTIR. The BET analysis sho
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4

Cimerman, Richard, Mária Cíbiková, Leonid Satrapinskyy, and Karol Hensel. "The Effect of Packing Material Properties on Tars Removal by Plasma Catalysis." Catalysts 10, no. 12 (2020): 1476. http://dx.doi.org/10.3390/catal10121476.

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Plasma catalysis has been utilized in many environmental applications for removal of various hydrocarbons including tars. The aim of this work was to study the tars removal process by atmospheric pressure DBD non-thermal plasma generated in combination with packing materials of various composition and catalytic activity (TiO2, Pt/γAl2O3, BaTiO3, γAl2O3, ZrO2, glass beads), dielectric constant (5–4000), shape (spherical and cylindrical pellets and beads), size (3–5 mm in diameter, 3–8 mm in length), and specific surface area (37–150 m2/g). Naphthalene was chosen as a model tar compound. The exp
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5

Setiawan, Daliya Indra, Tun Tedja Irawadi та Zainal Alim Mas’ud. "Hydrotreating of Sunan Candlenut (Reutealis trisperma Airy Shaw) Oil by Using NiMo-γAl2O3 as Renewable Energy". Indonesian Journal of Chemistry 19, № 1 (2019): 78. http://dx.doi.org/10.22146/ijc.27274.

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Hydrotreating process of Sunan candlenut oil by using NiMo-γAl2O3 catalyst has been successfully investigated. Preparation of NiMo-γAl2O3 catalyst by using dipping impregnation method generated catalyst used for hydrotreating process. This method consists of three stages: support activation, impregnation, and calcination. This factors influencing the process including temperature, pressure, and the ratio of Sunan candlenut oil to the H2 gas factor were examined. The hydrotreating product of fuel similar to oil was obtained at a minimum temperature of 380 °C, a pressure of 30–60 bar, and the ra
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6

Bin Sulayman, Abdulhamid, and Hugo de Lasa. "A Kinetic Model for Catalytic N-Butane Oxidative Dehydrogenation under Oxygen-Free Reaction Conditions in a Fluidized CREC Riser Simulator." Catalysts 14, no. 8 (2024): 505. http://dx.doi.org/10.3390/catal14080505.

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This study considers the development of a kinetic model for the n-butane oxidative dehydrogenation (ODH) to C4-olefins using a VOx/MgO−γAl2O3 catalyst. The prepared catalyst contained 5 wt% V on an MgO modified γAl2O3 support. The developed catalyst exhibited both weak and medium acid sites, as revealed by NH3-temperature-programmed desorption. TPR/TPO analyses also indicated that 73% of the loaded VOx was reducible. Kinetic experiments were conducted in a fluidized CREC Riser Simulator at temperatures ranging from 475–550 °C and residence times of 5–20 s. An optimal C4-olefin selectivity of 8
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7

Abahussain, Abdulaziz A. M., Ahmed S. Al-Fatesh, Naitik Patel, et al. "Alumina-Magnesia-Supported Ni for Hydrogen Production via the Dry Reforming of Methane: A Cost-Effective Catalyst System." Nanomaterials 13, no. 23 (2023): 2984. http://dx.doi.org/10.3390/nano13232984.

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5Ni/MgO and 5Ni/γAl2O3 are pronounced in the line of cheap catalyst systems for the dry reforming of methane. However, the lower reducibility of 5Ni/MgO and the significant coke deposition over 5Ni/γAl2O3 limit their applicability as potential DRM catalysts. The mixing capacity of MgO and Al2O3 may overcome these limitations without increasing the catalyst cost. Herein, a 5Ni/xMg(100 − x)Al (x = 0, 20, 30, 60, 70, and 100 wt. %) catalyst system is prepared, investigated, and characterized with X-ray diffraction, surface area and porosity measurements, H2-temperature programmed reduction, UV-Vi
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8

Karimova, Dana. "Investigation of n-Butane Conversion on Pd, Rh, Ru Catalysts Supported by Al2O3 and SiO2." Chemistry & Chemical Technology 18, no. 3 (2024): 386–92. http://dx.doi.org/10.23939/chcht18.03.386.

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This study explored the dehydrogenation of n-butane using Pd, Rh, and Ru catalysts on aluminum and silicon oxide supports. Aluminum oxide (Al2O3) showed superior conversion of n-butane, especially with 1% Pd/γAl2O3, yielding 31% target alkenes. This catalyst offers potential for scaling up n-butane dehydrogenation technology.
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9

Liao, Yalong, Yiyang Wang та Yu Zhang. "Preparation and Catalytic Hydrodechlorination Property of Nano Bimetallic Catalyst Pd–Ni/γAl2O3–SiO2". Catalysts 12, № 4 (2022): 370. http://dx.doi.org/10.3390/catal12040370.

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Pd–Ni bimetallic catalyst supported on a composite carrier of γAl2O3 and SiO2 was prepared by chemical precipitation methodology enhanced with an ultrasonic wave. In the present paper, the influence of dispersant, carrier, ultrasonic time and intensity on the dechlorination property of the catalysts obtained are investigated. The appearance, morphology and structure of the prepared catalysts were characterized using X-ray diffraction (XRD), scanning transmission electron microscopy (STEM), N2 adsorption–desorption isotherm and X-ray photoelectron spectroscopy spectrometer (XPS). The chemical c
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10

Sun, D. D., J. H. Tay, and C. Easton. "Recovery and encapsulation of heavy metals on refinery spent hydrotreating catalyst." Water Science and Technology 42, no. 5-6 (2000): 71–77. http://dx.doi.org/10.2166/wst.2000.0497.

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The experimental results indicate that spent hydrotreating catalyst (Co/Mo/γAl2O3) contains carbon (C), sulfur (S), molybdenum (Mo), cobalt (CO) and vanadium (V) at levels of 16 wt.%, 7.3 wt.%, 10.9 wt.%, 4.0 wt.% and 4.6 wt.% respectively. Calcination at 500°C is an effective process for the removal of carbon and sulfur and generates oxide form of heavy metals. Optimum removal of these metals was achieved by two stage leaching process. The first stage using concentrated ammonia was successful in removing 83 w/v % Mo. In a second stage with 10% v/v% sulfuric acid, it was found that 77% w/v% Co
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11

Lestari, Hidayah Dwi, S. Subagjo, and IGBN Makertihartha. "Sintesis katalis NiMo untuk hydrotreating coker nafta." Jurnal Teknik Kimia Indonesia 5, no. 1 (2018): 365. http://dx.doi.org/10.5614/jtki.2006.5.1.5.

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NiMo catalyst synthesis aimed to make catalyst based on nickel molybdenum Ni(4%-wt) Mo(20%­ wt)γ-Al2O3 by using ammonium heptamolybdate as source of Mo and nickel nitrate as source of Ni, and γ-Al2O3 as a support. The catalysts are prepared by sequential-dry impregnation method. The preparation parameters that studied are characteristic of support, the ammonium heptamolybdate solution pH, volume of impregnation solution, and stages impregnation of ammonium heptamolybdate solution. The preparation parameter affected the Mo distribution to the support. The inhomogeneous Mo distribution produced
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12

Charry, Iran David, Lina María González, and Consuelo Montes de Correa. "Characterization by temperature programmed techniques of spent and acid treated vanadium catalysts." Revista Facultad de Ingeniería Universidad de Antioquia, no. 57 (February 28, 2013): 31–37. http://dx.doi.org/10.17533/udea.redin.14641.

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Spent samples of V2O5/SiO2-γAl2O3 catalyst used for H2SO4 production were acid treated to recover vanadium. Fresh, spent, and acid treated samples were characterized by temperature-programmed techniques: TPR-H2, TPO-O2, TPD-NH3 and, TGA-DTA in order to determine the effect of deactivating species on vanadium recovery. DRX and UV-Vis techniques were used to confirm several signals from the temperature-programmed profiles. The results suggest that vanadium sulfovanadates and oxides in treated samples strongly interact with the support making it difficult to get more than 86% vanadium recovery.
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13

Maksimov, А. L., V. F. Tretyakov, Yu N. Litvishkov, S. М. Zulfugarova, R. М. Talyshinskiy та А. M. Ilolov. "KINETIC REGULARITIES OF DIMETHYL ETHER TRANSFORMATION INTO 1,3- BUTADIENE IN THE PRESENCE OF ZnO/γAl2O3/Al CATALYST". Chemical Problems 17, № 1 (2019): 135–44. http://dx.doi.org/10.32737/2221-8688-2019-1-135-144.

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14

Ardy, Aisyah, Jenny Rizkiana, Melia Laniwati, and Herri Susanto. "Synthesis of dimethyl ether using a fixed bed of dual catalyst for methanol synthesis and its dehydration." MATEC Web of Conferences 268 (2019): 07003. http://dx.doi.org/10.1051/matecconf/201926807003.

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Experimental study on direct synthesis of DME (dimethyl ether) has been conducted using tubular reactor. The synthesis of DME was performed with two commercial catalysts, ie methanol synthesis catalyst (M151, Cu-based) and methanol dehydration catalyst (γAl2O3). A mixture of H2, CO, and N2 was used as a model for synthesis gas. Gas flow rate was set at 20 mL/min (5 bar and 240oC). The reaction held at: pressure of 5 bar and a temperature of 240°C. This experiment was conducted by arranging a series of two types of catalysts in a fixed bed reactor. The methanol synthesis catalyst was placed in
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15

Liu, Feihu, Zhong Wang, Da Wang, Dan Chen, Fushan Chen, and Xuebing Li. "Morphology and Crystal-Plane Effects of Fe/W-CeO2 for Selective Catalytic Reduction of NO with NH3." Catalysts 9, no. 3 (2019): 288. http://dx.doi.org/10.3390/catal9030288.

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The CeO2 ordinary amorphous, nanopolyhedrons, nanorods, and nanocubes were prefabricated by the hydrothermal method, and employed as carriers of Fe/W–CeO2 catalysts to selectively catalyze the reduction of NO with ammonia. Characterization results indicated that the morphology of CeO2 support originated from selectively exposing different crystal surfaces, which has a significant effect on oxygen vacancies, acid sites and the dispersion of Fe2O3. The CeO2 nanopolyhedrons catalyst (Fe/W–CeO2–P) showed most oxygen vacancies, the largest the quantity of acid sites, the largest BET (Brunauer-Emmet
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16

Mazumder, Jahirul, та Hugo de Lasa. "Fluidizable Ni/La2O3-γAl2O3 catalyst for steam gasification of a cellulosic biomass surrogate". Applied Catalysis B: Environmental 160-161 (листопад 2014): 67–79. http://dx.doi.org/10.1016/j.apcatb.2014.04.042.

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17

Prada Silvy, Ricardo. "Scale-up of a NiMoP/γAl2O3 catalyst for the hydrotreating and mild hydrocracking of heavy gasoil". Oil & Gas Science and Technology – Revue d’IFP Energies nouvelles 74 (2019): 22. http://dx.doi.org/10.2516/ogst/2018094.

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This contribution shows the acquired experience during the scale-up of a NiMoP/γAl2O3 catalyst employed for the hydrotreating and mild hydrocracking of heavy gasoil. Three different strategies were adopted for preparing catalyst batches at pilot scale. They consisted on co-impregnation of γ-alumina extrudates with aqueous solutions containing Ni and Mo salts and phosphoric acid in one or two successive steps. The textural, chemical composition, mechanical strength, metallic surface dispersion and elemental radial distribution profile properties were influenced by the impregnation procedure emp
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18

Pham, Chuc Ngoc, Quyen Van Trinh, Thai Van Dang, et al. "Synthesis of CeO2-Fe2O3 Mixed Oxides for Low-Temperature Carbon Monoxide Oxidation." Adsorption Science & Technology 2022 (March 10, 2022): 1–12. http://dx.doi.org/10.1155/2022/5945169.

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In this study, the CeO2-Fe2O3 mixed oxide catalysts have been prepared by combustion method using gel-created tartaric acid. The ability of effective carbon monoxide (CO) oxidation to carbon dioxide (CO2) by CeO2-Fe2O3 catalyst under low-temperature conditions was also demonstrated. The calcined CeO2-Fe2O3 material has a porous honeycomb structure and good gaseous absorption-desorption ability. The solid solution of CeO2-Fe2O3 mixed oxides was formed by the substitution of Fe+3 ions at some Ce4+ ion sites within the CeO2 crystal lattice. The results also showed that the calcination temperature
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19

Ahmed, Dalya Jasim, Basim Ibrahim Al-Abdaly та Sattar Jalil Hussein. "Synthesis and Characterization of New nano catalyst Mo-Ni /TiO2- γAl2O3 for Hydrodesulphurization of Iraqi Gas Oil". Baghdad Science Journal 18, № 4(Suppl.) (2021): 1557. http://dx.doi.org/10.21123/bsj.2021.18.4(suppl.).1557.

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A new nano-sized NiMo/TiO2-γ-Al2O3 was prepared as a Hydrodesulphurization catalyst for Iraqi gas oil with sulfur content of 8980 ppm, supplied from Al-Dura Refinery. Sol-gel method was used to prepare TiO2- γ-Al2O3 nano catalyst support with 64% TiO2, 32% Al2O3, Ni-Mo/TiO-γ-Al2O3 catalyst was prepared under vacuum impregnation conditions to loading metals with percentage 3.8 wt.% and 14 wt.% for nickel and molybdenum respectively while the percentage for alumina, and titanium became 21.7, and 58.61 respectively. The synthesized TiO2- γ-Al2O3 nanocomposites and Ni-Mo /TiO2- γ-Al2O3 Nano cataly
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20

Lucky, Rahima A., Sagir Adamu, Muhammad Y. Khan, Shaikh A. Razzak та Mohammad M. Hossain. "Kinetics of Oxidative Dehydrogenation of n-Butane to C4-Olefins over a VOx/CeO2–γAl2O3 Catalyst in Gas-Phase Oxygen-Free Conditions". Industrial & Engineering Chemistry Research 59, № 40 (2020): 17815–27. http://dx.doi.org/10.1021/acs.iecr.0c03850.

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21

Radović, Vjera Novosel. "X-ray diffraction analysis of the cause of catalyst deactivation." Powder Diffraction 8, no. 1 (1993): 14–17. http://dx.doi.org/10.1017/s088571560001767x.

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After regeneration, the catalyst UOP-R-62 was used for conversion of reforming benzine. The percentage of conversion benzine fraction was considerably smaller than that of the new catalyst sample. To determine the cause of catalyst deactivation, in addition to standard methods of analysis, X-ray diffraction and scanning electron microscopy were used. Real and model samples of UOP-R-62 were analysed. Real samples were prepared with the new catalyst, a used and regenerated catalyst with good activity and a deactivated catalyst. Model samples were prepared from the new catalyst by heating at 400–
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22

SHALABI, MAZEN A., SAMEEN A. ZAIDI та MUHAMMAD A. Al-SALEH. "EFFECT OF REDUCTION CONDITIONS ON THE ACTIVITY OF Ni/γAl2O3 CATALYST FOR METHANATION REACTION". Chemical Engineering Communications 157, № 1 (1997): 23–33. http://dx.doi.org/10.1080/00986449708936680.

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23

Kohn, McKenzie P., Marco J. Castaldi та Robert J. Farrauto. "Auto-thermal and dry reforming of landfill gas over a Rh/γAl2O3 monolith catalyst". Applied Catalysis B: Environmental 94, № 1-2 (2010): 125–33. http://dx.doi.org/10.1016/j.apcatb.2009.10.029.

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24

Rygh, L. E. S., та C. J. Nielsen. "Infrared Study of CO Adsorbed on a Co/Re/γAl2O3-Based Fischer–Tropsch Catalyst". Journal of Catalysis 194, № 2 (2000): 401–9. http://dx.doi.org/10.1006/jcat.2000.2955.

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25

Thoa, Dao Thi Kim, Huynh Ky Phuong Ha, Luu Cam Loc та Nguyen Tuan Anh. "N-HEXANE ISOMERIZATION OVER Pt, Pd CATALYSTS SUPPORTED ON MIXES of HY+γ-Al2O3". ASEAN Engineering Journal 4, № 1 (2014): 30–39. http://dx.doi.org/10.11113/aej.v4.15425.

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In this study, a decationized form of faujasite zeolite HY and mixes of this zeolite with alumina γAl2O3 of various ratios have been used as carriers for catalysts 0.35 wt.% Pt and 0.80 wt.% Pd. Physico-chemical characteristics of the obtained catalysts were determined by methods of BET, SEM, EDS, TEM, XRD, TPR, H2 pulse chemisorption (HPC), and TPD. Activity of the catalysts for n-hexane isomerization was tested at the temperature range 225-450oC and two values of pressure 0.1 and 0.7 MPa. In feed flows the molar ratio hydrogen: hydrocarbon was 5.92 with the concentration of n-hexane as 9.2 m
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26

Okal, Janina, та Jan Baran. "Laser Raman Characterization of Oxidized Re/γAl2O3 Catalysts: Effect of Calcination Temperature". Journal of Catalysis 203, № 2 (2001): 466–76. http://dx.doi.org/10.1006/jcat.2001.3340.

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27

Karimipour, Zohreh, Reza Jalilzadeh Yengejeh, Azadeh Haghighatzadeh, Mohammad Kazem Mohammadi, and Maryam Mohammadi Roozbahani. "Photocatalytic Degradation of 2,4-Dichlorophenoxyacetic Acid Using Fe2O2/CeO2/Ag Composite Nanoparticles under Ultraviolet." Journal of Advances in Environmental Health Research 9, no. 3 (2020): 191–200. http://dx.doi.org/10.32598/jaehr.9.3.1190.

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Background: The herbicide 2,4-dichlorophenoxyacetic acid (2,4-D) is used to control of agricultural pests (water and soil) and is among the most widely distributed pollutants in the environment. Methods: In this study, Fe2O3/CeO2/Ag composite nanoparticles were synthesized using a simple coprecipitation method. The as-synthesized samples were examined using X-ray diffraction, field emission scanning electron microscopy, and X-ray analysis. The photo catalytic activity of the as-synthesized samples was examined through photo degradation of 2,4-dichlorophenoxyacetic acid (2,4-D) under ultraviole
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28

Silva-Rodrigo, R., H. Castillo Jimenez, A. Guevara-Lara та ін. "Synthesis, characterization and catalytic properties of NiMoP/MCM41-γAl2O3 catalysts for DBT hydrodesulfurization". Catalysis Today 250 (липень 2015): 2–11. http://dx.doi.org/10.1016/j.cattod.2014.09.007.

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29

Alshammari, Najah Ayad, Samia Abdulhammed Kosa, Rajan Patel та Maqsood Ahmad Malik. "Heterojunction-Based Photocatalytic Degradation of Rose Bengal Dye via Gold-Decorated α-Fe2O3-CeO2 Nanocomposites under Visible-Light Irradiation". Water 16, № 10 (2024): 1334. http://dx.doi.org/10.3390/w16101334.

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Developing photocatalytic nanomaterials with unique physical and chemical features using low-cost and eco-friendly synthetic methods is highly desirable in wastewater treatment. In this work, the magnetically separable α-Fe2O3-CeO2 nanocomposite (NC), with its respective metal oxides of α-Fe2O3 and CeO2 nanoparticles, was synthesized using a combination of hexadecyltrimethylammonium bromide (CATB) and ascorbic acid via the hydrothermal method. To tune the band gap, the heterojunction nanocomposite of α-Fe2O3-CeO2 was decorated with plasmonic Au nanoparticles (Au NPs). The various characterizat
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30

Piqueras, C. M., I. O. Costilla, P. G. Belelli, N. J. Castellani та D. E. Damiani. "Pd-γAl2O3 applied to triglycerides hydrogenation with supercritical propaneExperimental and theoretical catalysts characterization". Applied Catalysis A: General 347, № 1 (2008): 1–10. http://dx.doi.org/10.1016/j.apcata.2008.05.029.

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31

Bermúdez, J. M., A. Arenillas та J. A. Menéndez. "Syngas from CO2 reforming of coke oven gas: Synergetic effect of activated carbon/Ni–γAl2O3 catalyst". International Journal of Hydrogen Energy 36, № 21 (2011): 13361–68. http://dx.doi.org/10.1016/j.ijhydene.2011.07.124.

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32

Callant, M., P. Grange, K. A. Holder та B. Delmon. "Competitive Hydrodenitrogenation of Aniline and Indole. Interaction with the Hydrogenation Function of a NiMoP-γAl2O3 Catalyst". Bulletin des Sociétés Chimiques Belges 100, № 11-12 (2010): 823–30. http://dx.doi.org/10.1002/bscb.19911001106.

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33

Supramono, D., F. R. Ramadhan, and J. A. Ashshiddiq. "Effect of heating rate on oil yield and composition in co-pyrolysis of polypropylene and triglycerides from refined palm oil using ZrO2.Al2O3.TiO2 catalyst." IOP Conference Series: Earth and Environmental Science 1074, no. 1 (2022): 012030. http://dx.doi.org/10.1088/1755-1315/1074/1/012030.

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Abstract Polypropylene is major contributor to waste plastics, but its pyrolysis produces hydrogen radicals beneficial for deoxygenation of carboxylic acids. Fatty acids can be obtained by pyrolysis of triglycerides from refined palm oil. To investigate the possibility of the use of polypropylene as hydrogen donor and as part of hydrocarbons for producing hydrocarbons by deoxygenation of triglycerides, the present research works on catalytic co-pyrolysis of refined palm oil and polypropylene in a semibatch reactor. Two heating rates, i.e. 10℃/min and 6℃/min, were chosen to investigate their ef
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34

Shi, Xunwang, Kaidi Zhang, Qunpeng Cheng, Guangsen Song, Guozhi Fan та Jianfen Li. "Promoting hydrogen-rich syngas production through catalytic cracking of rape straw using Ni-Fe/PAC-γAl2O3 catalyst". Renewable Energy 140 (вересень 2019): 32–38. http://dx.doi.org/10.1016/j.renene.2019.03.060.

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35

Bermúdez, J. M., B. Fidalgo, A. Arenillas та J. A. Menéndez. "CO2 reforming of coke oven gas over a Ni/γAl2O3 catalyst to produce syngas for methanol synthesis". Fuel 94 (квітень 2012): 197–203. http://dx.doi.org/10.1016/j.fuel.2011.10.033.

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36

Mohammed, Malek M., Mazin A. H. Radhi та Ali Y. Nasir. "Studying the Factors Effects on the Flowability of ZnO-CuO/γAl2O3 Catalyst Through Hopper Before Tableting Process". Iraqi Journal of Chemical and Petroleum Engineering 5, № 2 (2004): 53–58. http://dx.doi.org/10.31699/ijcpe.2004.2.10.

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37

Guerra-Que, Zenaida, Jorge Cortez-Elizalde, Hermicenda Pérez-Vidal та ін. "Bimetallic M–Cu (M = Ag, Au, Ni) Nanoparticles Supported on γAl2O3-CeO2 Synthesized by a Redox Method Applied in Wet Oxidation of Phenol in Aqueous Solution and Petroleum Refinery Wastewater". Nanomaterials 11, № 10 (2021): 2570. http://dx.doi.org/10.3390/nano11102570.

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Three bimetallic catalysts of the type M–Cu with M = Ag, Au and Ni supports were successfully prepared by a two-step synthesized method using Cu/Al2O3-CeO2 as the base monometallic catalyst. The nanocatalysts were characterized using X-ray diffraction (XRD), temperature-programmed reduction of H2 (H2-TPR), N2 adsorption-desorption, scanning electron microscopy (SEM) with energy dispersive X-ray spectroscopy (EDS), transmission electron microscopy (TEM) and ultraviolet–visible spectroscopy with diffuse reflectance (DR-UV-Vis) techniques. This synthesized methodology allowed a close interaction
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38

Armaroli, T. "A DRIFTS study of Mo/alumina interaction: from Mo/boehmite solution to Mo/γAl2O3 support". Applied Catalysis A: General 251, № 2 (2003): 241–53. http://dx.doi.org/10.1016/s0926-860x(03)00341-7.

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39

Al-Shehri, H. S., M. S. Patel, S. Alwera, V. S. Talismanov, V. Alwera, and R. R. Macadangdang Jr. "Photocatalytic Degradation of Rhodamine B Dye by Using Tin-Doped CeO2-Fe2O3 Nanocomposite." Asian Journal of Chemistry 34, no. 3 (2022): 673–80. http://dx.doi.org/10.14233/ajchem.2022.23578.

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Organic dyes are frequently used in various industries such as textiles, medicines, plastics, etc. and contribute as a major source of environmental pollutants, which leads to harmful effects on livings. Therefore, in this study, a Sn-doped CeO2-Fe2O3 photocatalyst was synthesized using the thermal decomposition method and applied for the effective degradation and removal of rhodamine B dye under solar irradiation. The as-synthesized catalyst was characterized by powder X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), Brunauer-Emmett-Teller (BET) and UV-vis diffus
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40

Bai, Yuze, Huizhong Wu, Jinhao Zhu, et al. "Influence of lattice oxygen on properties of Ce–Fe composite in NO+CO reduction system." Materials Express 10, no. 8 (2020): 1292–99. http://dx.doi.org/10.1166/mex.2020.1816.

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Ce–Fe composite was prepared by hydrothermal method to simulate the ore facies with Ce–Fe coatingembedded structure in rare earth tailings. Fe2O3 is used as the carrier and cerium nitrate is used as active component. We studied the effect of lattice oxygen on the performance of Ce–Fe composites in the NO+CO reduction system. The results show that the peak of CeO2 in the sample prepared by the hydrothermal method of nitric acid moves at a high angle, the lattice constant becomes smaller, and the diffraction peak corresponding to CeO2 in Raman is red-shifted. It indicated that the hydrothermal m
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41

Li, Hong Ya, Biao Yan, Bin Xia Zhao та Xiao Li Zhang. "Catalytic Wet Peroxide Oxidation of Dye Wastewater Using Fe2O3-CeO2/γ-Al2O3 as Catalyst". Advanced Materials Research 884-885 (січень 2014): 29–32. http://dx.doi.org/10.4028/www.scientific.net/amr.884-885.29.

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Fe2O3-CeO2/γ-Al2O3 was used as catalyst for treating the dye wastewater by catalytic wet peroxide oxidation method, the effect of reaction temperature, initial pH value of the wastewater, dosage of catalyst and hydrogen peroxide on the COD removal were studied. Results showed that 90.3% of COD removal rate can be obtained under the condition of 90°C, pH=7, 0.8g catalyst/100 mL wasterwater, and 6mL H2O2 /100 mL wasterwater.
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42

Zhao, Peng, Yuwei Zhao, Yiping Guo, Rong Guo, Yimei Tian та Weigao Zhao. "Preparation of CuO/γAl2O3 catalyst for degradation of azo dyes (reactive brilliant red X–3B): An optimization study". Journal of Cleaner Production 328 (грудень 2021): 129624. http://dx.doi.org/10.1016/j.jclepro.2021.129624.

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43

Khan, Muhammad Y., Sameer Al-Ghamdi, Shaikh A. Razzak, Mohammad M. Hossain та Hugo de Lasa. "Fluidized bed oxidative dehydrogenation of ethane to ethylene over VOx/Ce-γAl2O3 catalysts: Reduction kinetics and catalyst activity". Molecular Catalysis 443 (грудень 2017): 78–91. http://dx.doi.org/10.1016/j.mcat.2017.09.025.

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44

Poulet, O., R. Hubaut, S. Kasztelan та J. Grimblot. "Experimental Evidences of the Direct Influence of Phosphorus on Activity and Selectivity of a MoS2-γAl2O3 Hydrotreating Catalyst". Bulletin des Sociétés Chimiques Belges 100, № 11-12 (2010): 857–63. http://dx.doi.org/10.1002/bscb.19911001110.

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45

Nabeel Abdulqahar, Safa, Majid I. Abdulwahab, and Khalid K. Hummadi. "Reuse of Spent Hydrotreating Catalyst of the Middle Petroleum Fractions." Iraqi Journal of Chemical and Petroleum Engineering 20, no. 1 (2019): 15–22. http://dx.doi.org/10.31699/ijcpe.2019.1.3.

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Reuse of spent hydrodesulphurization (HDS) of middle petroleum fractions catalyst CoMo/γAl2O3 was accomplished via removal of coke and contaminants such as vanadium, Iron, Nickel, and sulfur. Three processes were adopted; extraction, leaching, decoking. Soluble and insoluble coke was removed. Leaching step used three different solvents (oxalic acid, ammonium peroxydisulfate and oxalic acid + H2O2) in separate in order to remove contaminant metals (V, S, Ni and Fe).
 The effect of soluble coke removal on leaching step was studied. It was found that the removal of soluble coke significantly
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46

Tamura, Shinji, Asuki Sakurai, and Nobuhito Imanaka. "Catalytic Combustion Type H2 Gas Sensor Based on Cerium Oxide." ECS Meeting Abstracts MA2024-02, no. 65 (2024): 4353. https://doi.org/10.1149/ma2024-02654353mtgabs.

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Hydrogen gas is the most promising clean energy source, but its use carries an explosion hazard (LEL: 4 vol%). Therefore, the real-time and accurate detection of H2 gas leakage at every emitting site is required with the compact sensor to prevent a critical accident. Among the compact H2 gas sensors proposed, the catalytic combustion type gas sensor using precious metal-loaded γ-Al2O3 such as Pt/Al2O3 as the catalyst is one of the sensors in practical use because of its long life and low-cost features. However, platinum is an expensive and scarce resource, and its use is desired to be reduced.
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47

Dinamarca, Robinson, Rodrigo Espinoza-González, Cristian Campos, and Gina Pecchi. "Magnetic Fe2O3–SiO2–MeO2–Pt (Me = Ti, Sn, Ce) as Catalysts for the Selective Hydrogenation of Cinnamaldehyde. Effect of the Nature of the Metal Oxide." Materials 12, no. 3 (2019): 413. http://dx.doi.org/10.3390/ma12030413.

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The type of metal oxide affects the activity and selectivity of Fe2O3–SiO2–MeO2–Pt (Me = Ti, Sn, Ce) catalysts on the hydrogenation of cinnamaldehyde. The double shell structure design is thought to protect the magnetic Fe2O3 cores, and also act as a platform for depositing a second shell of TiO2, SnO2 or CeO2 metal oxide. To obtain a homogeneous metallic dispersion, the incorporation of 5 wt % of Pt was carried out over Fe2O3–SiO2–MeO2 (Me = Ti, Sn, Ce) structures modified with (3-aminopropyl)triethoxysilane by successive impregnation-reduction cycles. The full characterization by HR-TEM, STE
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Amusa, Hussein K., Sagir Adamu, Idris A. Bakare та ін. "High-performance VOx on SrO-γAl2O3 catalyst for oxidative cracking of n-hexane to light olefins under anaerobic environment". Journal of Industrial and Engineering Chemistry 89 (вересень 2020): 339–50. http://dx.doi.org/10.1016/j.jiec.2020.06.001.

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Ngwenya, Talent, Nolwazi Nombona, and Mzamo Shozi. "Synthesis and Characterization of Supported Pd Catalysts for Potential Application in Glycerol Electro-Oxidation." Catalysts 12, no. 2 (2022): 192. http://dx.doi.org/10.3390/catal12020192.

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Ceria-supported Pd catalysts encompassing oxides of Cu, Co, and Fe were synthesized and characterized using XRD, TEM, SEM-EDX, TPR, BET, and Raman. After the incorporation of the metal oxides, the surface area and pore volume of the ceria support decreased. XRD showed the presence of the metal oxide phases as well as the support, CeO2. TPR showed that the bimetallic catalyst had improved reducibility compared to the monometallic Pd/CeO2. TEM images showed irregular-shaped particles with an average size distribution of 2–10 nm. SEM-EDX showed that the metal oxides were evenly distributed over t
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50

Bian, Xue, Hanying Jia, Ming Cai, Peng Cen, Yuting Bai, and Wenyuan Wu. "Preparation and characterization of CeO2–Fe2O3 catalysts for the selective catalytic reduction of NO with CO." New Journal of Chemistry 45, no. 44 (2021): 20726–34. http://dx.doi.org/10.1039/d1nj04363c.

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