Synthesis and characterisation of Y2O3 using ammonia oxalate as a precipitant in distillate pack co-precipitation process

Foo, Yuan Teng; Abdullah, Ahmad Zuhairi; Horri, Bahman Amini; Salamatinia, Babak

doi:10.1016/j.ceramint.2018.07.098

Cited by 19 publications

(12 citation statements)

References 48 publications

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“…TEM was used to observe the detailed morphology on the catalyst surface. , As shown in the images of (a–h) in Figure , the particles presented a semispherical shape and an obvious increase in size from 12.77 to 20.80 nm, with the temperature ranging from 650 to 950 °C. Thus, one conclusion that could be drawn was that the calcination temperature had an important effect on the Y 2 O 3 metal oxide size.…”

Section: Resultsmentioning

confidence: 99%

Study of Thermodynamics and Experiment on Direct Synthesis of Dimethyl Carbonate from Carbon Dioxide and Methanol over Yttrium Oxide

Sun

Zheng

Wang

et al. 2020

Ind. Eng. Chem. Res.

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The thermodynamics on the direct synthesis of dimethyl carbonate (DMC) from CO2 and CH3OH was calculated and analyzed. Using Y(NO3)3·6H2O as the precursor, a series of Y2O3 were prepared through the one-pot calcination method, which were employed to catalyze DMC synthesis. The decomposition temperature of Y(NO3)3·6H2O was measured by thermogravimetric analysis, and Y2O3 was obtained after the precursor calcination at desired temperatures, denoted as Y2O3-T (°C). The catalysts were characterized by X-ray diffraction, Brunauer–Emmett–Teller method, transmission electron microscopy, NH3/CO2 temperature-programmed desorption, and X-ray photoelectron spectroscopy to detect the crystal phase, surface property, particle size, acidity–basicity amounts, and oxidation state, respectively. The characterization results indicated that Y2O3-750 can favor the formation of moderate acidic and basic sites and facilitate the activation of CO2 and CH3OH. The catalytic performance evaluation was experimentally investigated, and Y2O3-750 owned the highest DMC yield of 1.02 mmol/g·cat under 90 °C, 8 MPa, and 6 h, which also exhibited reliable recycle ability.

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Section: Resultsmentioning

confidence: 99%

Study of Thermodynamics and Experiment on Direct Synthesis of Dimethyl Carbonate from Carbon Dioxide and Methanol over Yttrium Oxide

Sun

Zheng

Wang

et al. 2020

Ind. Eng. Chem. Res.

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“…Besides, a narrow pore size distribution was evidenced in Figure 1b, corresponding to an Average Pore Diameter (APD) of 4.9 nm (Table 1). Differently, mesoporous Ni/CeO 2 and Ni/Y 2 O 3 catalysts showed H3 type hysteresis loop, characteristic of plate-type particles with slit-shaped pores [46][47][48][49]. In addition, the appearance of hysteresis loop at high relative pressure (p/p0 > 0.6) was indicative of a broad pore size distribution, containing both accessible mesopores and macropores in the structure (Figure 1b) [50,51] 1).…”

Section: N 2 Adsorption-desorptionmentioning

confidence: 96%

CO and CO2 methanation over Ni catalysts supported on CeO2, Al2O3 and Y2O3 oxides

Italiano

Llorca

Pino

et al. 2020

Applied Catalysis B: Environmental

271

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In this paper, the methanation of carbon oxides (CO and CO 2 ) was studied as an interesting way to provide a renewable energy source of synthetic natural gas (SNG) simultaneously reducing the emission of greenhouse gases. 15 wt.% Ni-based catalysts supported on CeO 2 , Al 2 O 3 and Y 2 O 3 oxides were synthesized by solution combustion synthesis. Then, a second series on Ni/Y 2 O 3 catalysts was prepared with different Ni loading (7-35 wt.%). The physicochemical properties of the catalysts were characterized by N 2 -physisorption, XRD, H 2 -TPR, CO-chemisorption, TEM, UV-Vis DRS, XPS, and CO 2 -TPD. The effect of reaction temperature (250-500°C) was investigated under atmospheric pressure, space velocity (GHSV) of 10,000 h −1 , and stoichiometric reactants ratio of (H 2 -CO 2 )/(CO+CO 2 ) = 3. A 200 h stability test was also carried out at 350°C over the 25 wt.% Ni/Y 2 O 3 catalyst. It can be concluded that the nature of Ni-support interactions played a crucial role in enhancing CO and CO 2 hydrogenation at relatively low reaction temperature. Ni/CeO 2 catalyst deactivated rapidly due to coke deposition, while the formation of NiAl 2 O 4 spinel was the main reason of the lower activity of the Al 2 O 3 -supported system. Activity data for Ni/Y 2 O 3 catalysts were closely related to the degree of Ni dispersion as well as to the medium-strength basicity. Good anti-coking and anti-sintering ability were observed after 200 h of lifetime test over the 25Ni/Y 2 O 3 catalyst.

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“…Then, they varied the coprecipitation reaction temperature between the room temperature and 100 °C for diverse reaction durations in the ranges from between 0.5 h to 3h. Results showed the optimum processing parameters for the pure Y 2 O 3 NPs to be co‐precipitation reaction at 40 °C for one hour and calcination at 650 °C for four hour; semi‐spherical Y 2 O 3 NPs could be attained with a larger specific surface area of 7.40 m 2 /g and the crystallite size in ranges from 7 to 21 nm [65].…”

Section: Synthesis Of Non‐precious Tmo Npsmentioning

confidence: 99%

Applications of Non‐precious Transition Metal Oxide Nanoparticles in Electrochemistry

Tajik¹,

Beitollahi²,

Dourandish³

et al. 2022

Electroanalysis

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Non‐precious transition metal oxide nanomaterials offer numerous opportunities for various cost‐effective electrochemical applications. This review article features the design and advancement of such nanomaterials with unique features applied for the fabrication of electrochemical devices. Also, it discusses various new syntheses of transition metal oxide nanoparticles (TMO NPs) via multiple chemicophysical and biological procedures. Further, the novel appliances of the TMO NPs with varying sizes and morphologies are appraised. The advantages and challenges of a number of investigations on the TMO NPs towards electrochemical applications are addressed with their standpoint of cost‐effectiveness, applicability, and the efficiency of the introduced nanostructures for the industrial applications.

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Synthesis and characterisation of Y2O3 using ammonia oxalate as a precipitant in distillate pack co-precipitation process

Cited by 19 publications

References 48 publications

Study of Thermodynamics and Experiment on Direct Synthesis of Dimethyl Carbonate from Carbon Dioxide and Methanol over Yttrium Oxide

Study of Thermodynamics and Experiment on Direct Synthesis of Dimethyl Carbonate from Carbon Dioxide and Methanol over Yttrium Oxide

CO and CO2 methanation over Ni catalysts supported on CeO2, Al2O3 and Y2O3 oxides

Applications of Non‐precious Transition Metal Oxide Nanoparticles in Electrochemistry

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