Al2o3

Manufactured by Thermo Fisher Scientific

Sourced in United States

Aluminum Oxide (Al2O3) is a widely used inorganic compound that serves as a core component in various laboratory equipment and applications. It is a white, crystalline solid with high thermal and electrical insulation properties. Al2O3 is commonly utilized for its stability, hardness, and chemical resistance.

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Lab products found in correlation

Pd no3 2 2h2o, by Merck Group (1 mentions) Cu no3 2.2.5h2o, by Thermo Fisher Scientific (1 mentions) Agno3, by Merck Group (1 mentions) 1 methylimidazole, by Thermo Fisher Scientific (1 mentions) Adipic acid, by Merck Group (1 mentions) Aluminum oxide, by Thermo Fisher Scientific (1 mentions) Zinc oxide zno, by Thermo Fisher Scientific (1 mentions) Cyclohexane, by Sinopharm (1 mentions) Co no3 2 6h2o, by Sinopharm (1 mentions) Rucl3 xh2o, by Sinopharm (1 mentions) Nh4 6mo7o24 4h2o, by Sinopharm (1 mentions) Ethanol, by Sinopharm (1 mentions) Fecl3 6h2o, by Sinopharm (1 mentions) Ethylene glycol, by Sinopharm (1 mentions) Tio2 p25, by Evonik (1 mentions) Nd2o3, by Merck Group (1 mentions) Nh4 2hpo4, by Thermo Fisher Scientific (1 mentions) Gd2o3, by Thermo Fisher Scientific (1 mentions) Ga2o3, by Merck Group (1 mentions) Caco3, by Thermo Fisher Scientific (1 mentions)

Close spelling variants of this product

γ-Al2O3 (12 citations) α-Al2O3 (4 citations) Pt/Al2O3 (3 citations) γ-Al2O3 pellets (2 citations) Al2O3 FPs (1 citations)

14 protocols using al2o3

Synthesis of Cu-based Catalysts for Acetylene Dimerization

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Example 1

The Cu-based catalysts were synthesized by incipient wetness technique. The chemicals used in the synthesis include Cu(NO₃)₂.2.5H₂O (Alfa Aesar), NORu-3NO₃(Alfa Aesar), Ga(NO₃)₃.xH₂O (Alfa Aesar), Pd(NO₃)₂.2H₂O (Sigma-Aldrich), AgNO₃(Sigma-Aldrich), SiO₂(CAB-O-SIL EH-5, CABOT), ZSM-5 (CBV2314, Zeolyst), ammonium zeolite mordenite (20:1 mole ratio SiO₂:Al₂O₃, Alfa Aesar, noted as MOR). In a typical synthesis procedure, m(Cu)/m(support) was set at 10 wt %, whereas the content of Ru, Ag, Ga and Pd was fixed at 1 wt %. After introducing metals by incipient wetness technique, samples were air dried at room temperature overnight then continued dried in an oven at 110° C. overnight. The obtained samples were calcined at 550° C. for 4 h. Before the acetylene dimerization reaction, catalyst was reduced at 500° C. for 2 h.

US11530171B2. Method to produce C4 olefins from natural gas-derived acetylene (2022-12-20). West Virginia University [US]. Inventors: Jianli Hu [US], Qingyuan Li [US].

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Measuring Enthalpy of Dissolution in Molten Solvent

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Δ H_{d s}

was measured in a custom-made isoperibol Tian-Calvet twin microcalorimeter. Pellets of about 5 mg were loosely pressed, weighed, and dropped from room temperature into 3Na₂O

\cdot

4MoO₃ molten solvent at 702

^{\circ} C

. The calorimeter assembly was washed with oxygen at 43

{m L \min}^{- 1}

. Oxygen was bubbled through the solvent at

4.5

{m L \min}^{- 1}

to aid dissolution, evolve water vapor, and to maintain oxidizing conditions. The calorimeter was calibrated against the heat content of 5 mg pellets of high-purity Al₂O₃ (99.997%, Alfa Aesar) dropped into an empty crucible.

Sures D.J., Nagabhushana G.P., Navrotsky A, & Nyman M. (2018). Thermochemical Measurements of Alkali Cation Association to Hexatantalate. Molecules : A Journal of Synthetic Chemistry and Natural Product Chemistry, 23(10), 2441.

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Synthesis of Furan-based Compounds

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Al₂O₃ (powder, 99.9 %), 4‐butane sultone (liquid, 99 %), 1‐methylimidazole (liquid, 99 %), and HI (57 wt% aqueous solutions) were purchased from Alfa Aesar. RuCl₃ ⋅ xH₂O (powder, 99.8 %), and NaBH₄ (powder, 98 %) were obtained from DeaJung Co., Ltd. ZrO₂ (powder, 99 %), TiO₂ (powder, 99.7 %), MnO₂ (powder, 99 %), CoO (powder, 99.9 %), and Ru/C (powder, 5 wt% Ru) were purchased from Sigma‐Aldrich. 2,5‐furan dicarboxylic acid (FDCA, 99 %) and tetrahydrofuran‐2,5‐dicarboxylic acid (THFDCA, 93 %) were purchased from Angene International Co., Ltd. Adipic acid (AA, 99 %) was obtained from Sigma. HydroxyAdipic acid (HAA) was purchased from Habo Hong Kong Co., Ltd. The above‐authenticated samples were used as received.

Vy Tran A., Park S., Jin Lee H., Yong Kim T., Kim Y., Suh Y., Lee K., Jin Kim Y, & Baek J. (2022). Efficient Production of Adipic Acid by a Two‐Step Catalytic Reaction of Biomass‐Derived 2,5‐Furandicarboxylic Acid. Chemsuschem, 15(10), e202200375.

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Synthesis of Copper-Based Catalysts

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The synthesis reagents of analytical purity were used without further purification. The materials used for the preparation of copper-based catalysts were as follows: copper acetate (CH₃-COO)₂Cu ·H₂O, 99.5%, S.C UTCHIM SRL, Ramnicu Valcea, Romania); copper nitrate (Cu (NO₃)₂·2.5 H₂O, 98.0%, Alfa Aesar, MA, USA), zinc oxide (ZnO, 99.0%, Alfa Aesar, MA, USA), aluminum oxide (Al₂O₃, 99.97%, Alfa Aesar, MA, USA), and distilled water. The Millipore system (Stuttgart, Germany) was used to purify the water.

Oubraham A., Iordache M., Marin E., Sisu C., Borta S., Soare A., Capris C, & Marinoiu A. (2024). Preparation of Copper-Based Catalysts for Obtaining Methanol by the Chemical Impregnation Method. Materials, 17(4), 847.

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Heterogeneous Catalyst Synthesis and Characterization

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(NH₄)₆Mo₇O₂₄·4H₂O, H₂PtCl₄·6H₂O, RuCl₃·xH₂O (Ru amount: ~37%), FeCl₃·6H₂O, Co(NO₃)₂·6H₂O, cyclohexane, ethanol, ethylene glycol, polyethylene glycol-200 (PEG-200), polyethylene glycol-400 (PEG-400), polyethylene glycol-600 (PEG-600) were purchased from Sinopharm Chemical Reagent Co., Ltd. (Shanghai, China). 1-dodecene was purchased from Shanghai Aladdin Biochemical Technology Co., Ltd. (Shanghai, China). Al₂O₃ (catalyst support, high surface area, 1/8 pellets) was purchased from Alfa Aesar(China) Chemcals Co., Ltd. (Shanghai, China). NH₃, N₂, CO (with 5% N₂ as the internal standard), CO₂, H₂, propylene, and syngas (H₂:CO:Ar =64:32:4) were purchased from Nanjing Special Gas Factory Co., Ltd. (Nanjing, China). Syngas (H₂:CO:N₂ = 9.6:85.1:4.3) was compounded manually. Propylene-containing syngas (H₂:CO:C₃H₆ = 14:14:2) was compounded manually. 50-mL Hastelloy slurry reactors were purchased from Shanghai Yanzheng Experiment Instrument Co., Ltd. (Shanghai, China).

Wang C., Du J., Zeng L., Li Z., Dai Y., Li X., Peng Z., Wu W., Li H, & Zeng J. (2023). Direct synthesis of extra-heavy olefins from carbon monoxide and water. Nature Communications, 14, 1857.

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Characterization of Commercial and Synthesized Catalysts

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Chemicals and materials were purchased from commercial suppliers and used without further purification. TiO₂ (P25) having both anatase and rutile phases was obtained from Evonik (formerly Degussa). TiO₂ STR-100N having rutile phase was provided by Sakai Chemical Industry, while TiO₂ ST-01 with anatase phase was obtained from Ishihara Sangyo. The carbon and γ-Al₂O₃ (Puralox) supports were commercially obtained from Kishida Chemical and Sasol, respectively. ZrO₂ (JRC-5) was supplied by the Catalysis Society of Japan. SiO₂ (CariACT Q-10) was purchased from Fuji Silysia Chemical Company Ltd. Nb₂O₅ was prepared by calcination of niobic acid (Nb₂O₅ ∙ nH₂O, HY-340) supplied from CBMM (Companhia Brasileira de Metalurgia e Mineração) at 500 °C for 3 h. CeO₂ (Type-A) support was provided by Daiichi Kigenso Kagaku Kogyo Co., Ltd. The industrial CuZnAl catalyst known as a copper-based low-temperature water-gas shift catalyst (HiFUEL® W220; CuO = 52 wt%, ZnO = 30 wt%, Al₂O₃ = 17 wt%) and the FeCrCuO_x catalyst known as an iron–chrome-based high-temperature water-gas shift catalyst (HiFUEL® W210; Fe₂O₃ = 82.7 wt%, Cr₂O₃ = 7 wt%, CuO = 5 wt%) were purchased from Alfa Aesar.

Wang G., Mine S., Chen D., Jing Y., Ting K.W., Yamaguchi T., Takao M., Maeno Z., Takigawa I., Matsushita K., Shimizu K.I, & Toyao T. (2023). Accelerated discovery of multi-elemental reverse water-gas shift catalysts using extrapolative machine learning approach. Nature Communications, 14, 5861.

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Activated SiC Monoliths for Ionic Liquid Infusion

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Silicon carbide (SiC) monoliths with an
average pore size of 3
μm were activated with oxygen plasma for 5 min. The LbL deposition
was performed similarly to the coating of flat surfaces, with an additional
drying step between each immersion. The first immersion used a 0.1%
w/w solution of PDADMAC for 10 min followed by rinsing in DI water
and drying with nitrogen. The second immersion step used a 0.1% w/w
dispersion of Ludox silica particles for 10 min followed by rinsing
in water and drying with nitrogen. The cycle was repeated five times,
and PDADMAC was removed by combustion at 500 °C for 2 h with
a 5 h ramp time.
For infusion of the ionic liquid (IL) and the
leaching test, the coating solutions were exchanged as follows: after
activation of SiC monoliths with plasma, the first immersion was in
a 0.1% w/w dispersion of Al₂O₃ (average size:
50 nm, Alfa Aesar), which has a zeta potential of 35 mV; this gave
a stable dispersion of positively charged particles. After the rinsing
and drying steps, the second immersion was in a 0.1% w/w solution
of poly(sodium 4-styrensesulfonate) (PSS). We coated SiC monoliths
in 5, 10, and 15 cycles. The PSS was removed by combustion at 500
°C for 2 h.

Galvan Y., Bauernfeind J., Wolf P., Zarraga R., Haumann M, & Vogel N. (2021). Materials with Hierarchical Porosity Enhance the Stability of Infused Ionic Liquid Films. ACS Omega, 6(32), 20956-20965.

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Characterization of CuO-ZnO-MgO-Al2O3 Catalyst

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The commercial CuO–ZnO–MgO–Al₂O₃ material was purchased from Alfa Aesar (ref
number: 45776) and has a composition of CuO (60–68 wt %), ZnO
(22–26 wt %), Al₂O₃ (8–12 wt %),
and some MgO (1–3 wt %), according to the supplier. Table S1 describes the chemicals employed for
the synthesis of the binary catalyst. Tables S2 and S3 list the chemicals employed for the catalytic testing
of the binary Cu–ZnO and commercial catalysts, respectively.
All employed gases were of high purity, >99.995 vol %. Note that
the
commercial catalyst, upon reduction for the reaction, is denoted as
Cu–ZnO–MgO–Al₂O₃; however,
XPS revealed the presence of unreduced Cu(II) species. For simplicity,
the catalyst was denoted as Cu–ZnO–MgO–Al₂O₃ since the reduced Cu species are involved in
the active sites.

Solsona V., Morales-de la Rosa S., De Luca O., Jansma H., van der Linden B., Rudolf P., Campos-Martín J.M., Borges M.E, & Melián-Cabrera I. (2021). Solvent Additive-Induced Deactivation of the Cu–ZnO(Al2O3)-Catalyzed γ-Butyrolactone Hydrogenolysis: A Rare Deactivation Process. Industrial & Engineering Chemistry Research, 60(44), 15999-16010.

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Solid-State Synthesis of Gd-Nd Oxide Ceramics

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All of the samples were synthesized through solid state reactions with Gd

_{2}

_{3}

(99.99%, Alfa Aesar, Ward Hill, MA, USA), Nd

_{2}

_{3}

(99.99%, Sigma-Aldrich, Burlington, MA, USA), Al

_{2}

_{3}

(99.99%, Alfa Aesar), SiO

_{2}

(99.95%, Alfa Aesar), Ga

_{2}

_{3}

(99.99%, Sigma-Aldrich), (NH

_{4}

)

_{2}

HPO

_{4}

(99%, Acros Organics, Geel, Belgium) and V

_{2}

_{5}

(99.99%, Thermo Scientific, Waltham, MA, USA) as precursors, which were weighed in a stoichiometric manner such that the chemical reactions listed below are valid. The doping level (x) was defined as

\frac{[Nd]}{[Nd] + [Gd]}

. The precursors were mixed using a mortar and pestle, after which they were heated to the temperatures mentioned below, with a heating rate of 300

^{°}

C/h. The ovens used for synthesis operated in an air atmosphere.

Delaey M., Van Bogaert S., Cosaert E., Mommen W, & Poelman D. (2023). Neodymium-Doped Gadolinium Compounds as Infrared Emitters for Multimodal Imaging. Materials, 16(19), 6471.

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Copper-Based Methanol Synthesis Catalyst

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Copper-based methanol synthesis catalyst (product number: 45776; lot number I06Z036) containing 10.1 wt% Al₂O₃, 63.5 wt% CuO, 24.7 wt% ZnO and 1.3 wt% MgO was purchased from Alfa Aesar.

Zabilskiy M., Sushkevich V.L., Palagin D., Newton M.A., Krumeich F, & van Bokhoven J.A. (2020). The unique interplay between copper and zinc during catalytic carbon dioxide hydrogenation to methanol. Nature Communications, 11, 2409.

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