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Manganese 2 nitrate tetrahydrate

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Manganese(II) nitrate tetrahydrate is a chemical compound with the formula Mn(NO3)2·4H2O. It is a green crystalline solid that is soluble in water. The compound is used as a source of manganese ions in various applications.

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Lab products found in correlation

Hydrazine hydrate, by Merck Group (2 mentions) Ammonium hydroxide solution, by Honeywell (2 mentions) Cerium 3 nitrate hexahydrate, by Thermo Fisher Scientific (2 mentions) Cobalt 2 nitrate hexahydrate, by Merck Group (2 mentions) Cerium iii nitrate hexahydrate, by Thermo Fisher Scientific (1 mentions) Pdcl2, by Merck Group (1 mentions) Copper 2 nitrate trihydrate, by Thermo Fisher Scientific (1 mentions) 2 propanol, by Carl Roth (1 mentions) Vulcan carbon xc 72r, by Cabot (1 mentions) Isopropyl alcohol, by Carl Roth (1 mentions) Vulcan xc 72r, by Cabot (1 mentions) Sodium hydroxide (naoh), by Honeywell (1 mentions) Phenol c6h5oh, by Merck Group (1 mentions) Cerium 3 nitrate hexahydrate, by Merck Group (1 mentions) Citric acid monohydrate, by Thermo Fisher Scientific (1 mentions) Sodium carbonate monohydrate, by Merck Group (1 mentions) Sodium hydroxide (naoh), by Thermo Fisher Scientific (1 mentions) Iridium 3 chloride hydrate, by Thermo Fisher Scientific (1 mentions) Ruthenium 4 oxide, by Merck Group (1 mentions) Vulcan carbon xc 72, by Cabot (1 mentions)

8 protocols using manganese 2 nitrate tetrahydrate

1

Synthesis of CeOx-MnOx/Al2O3 Catalyst

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All chemicals used in the preparation of catalytic materials are commercial and have been used without additional purification. The following chemical substances were used: cerium (III) nitrate hexahydrate (99.5% purity), manganese (II) nitrate tetrahydrate (both purchased from Acros Organics, Fair Lawn, NJ, USA), PdCl2 (99.9% purity) from Sigma-Aldrich (St. Louis, MO, USA). Commercially available Sasol Puralox TH100 (composition: Al2O3 with 4% La2O3) was used in this study as support for CeOx and MnOx.
Deionized water (18 MΩ × cm resistivity) was used in all the preparation steps. First, Puralox TH100 was dispersed in deionized water, followed by the dissolution of manganese and cerium nitrate salts. The molar ratio Ce/Mn/Al was 7/3/10. The pH was adjusted at 9 pH units with 25% aq. NH4OH. The mixture was heated in an autoclave 3 h at 180 °C, filtered, washed, and calcined 6 h at 500 °C (heating ramp of 6 °C/min.) After calcination, the material was grinded.
Florea O.G., Stănoiu A., Gheorghe M., Cobianu C., Neaţu F., Trandafir M.M., Neaţu Ş., Florea M, & Simion C.E. (2020). Methane Combustion Using Pd Deposited on CeOx-MnOx/La-Al2O3 Pellistors. Materials, 13(21), 4888.
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2

Adsorption of Heavy Metals on Natural Zeolite

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Natural zeolite ZEOCEM 50 in powdered form and in the fraction 560–850 μm was purchased from Zeocem, (Bystré, Slovakia). The chemical composition of this powdered material, which contains at least 85 wt % of clinoptilolite and other mineral components like clay, feldspar and mica (9, 4 and 2 wt %, respectively), is shown in Table 1.
Potassium hydroxide, magnesium oxide and hydrogen peroxide of analytical grade were supplied by Lach-Ner, s.r.o (Neratovice, Czech Republic). Na-water glass (sodium silicate) with silicate modulus 3.22 was supplied by Labar s.r.o (Ústí nad Labem, Czech Republic).
The following compounds were used to prepare the solutions for the adsorption tests:

Iron(III) nitrate nonahydrate (Fe(NO3)3.9H2O) (Penta, s.r.o., Prague, Czech Republic)

Manganese(II) nitrate tetrahydrate (Mn(NO3)2.4H2O) (Acros Organics B.V.B.A., Geel, Belgium)

Copper(II) nitrate trihydrate (Cu(NO3)2.3H2O) (Acros Organics B.V.B.A., Geel, Belgium)

Nickel(II) nitrate hexahydrate (Ni(NO3)2.6H2O) (Penta, s.r.o., Prague, Czech Republic)

Zinc(II) nitrate hexahydrate (Zn(NO3)2.6H2O) (Lach-Ner, s.r.o., Neratovice, Czech Republic)

Svobodová E., Tišler Z., Peroutková K., Strejcová K., Abrham J, & Šimek J. (2024). Adsorption of Heavy Metals on Alkali-Activated Zeolite Foams. Materials, 17(3), 685.
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3

Electrochemical Material Synthesis Protocols

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The following chemicals were used for material
preparation and electrochemical analysis: graphite (Timrex KS44; Imreys,
Bodio, Switzerland), carbon black (Vulcan carbon XC72R; Cabot Corp.,
Boston, Massachusetts), hydrazine hydrate (reagent grade; Sigma-Aldrich,
Darmstadt, Germany), cobalt(II) nitrate hexahydrate (99.999% trace
metals basis; Sigma-Aldrich, Darmstadt, Germany), zinc(II) nitrate
hexahydrate (>99%; Honeywell Fluka, Charlotte, North Carolina),
cerium(III)
nitrate hexahydrate (99.5%; Alfa Aesar, Haverhill, Massachusetts),
manganese(II) nitrate tetrahydrate (98%; Alfa Aesar, Haverhill, Massachusetts),
ammonium hydroxide solution (30–33%; Honeywell, Charlotte,
North Carolina), 2-propanol (≥99.9%, UV/IR-grade; Carl Roth,
Karlsruhe, Germany), potassium hydroxide (1.0 M Fixanal 1 L Ampoule;
Merck, Darmstadt, Germany), ethanol (99.9% p.a.; Carl Roth, Karlsruhe,
Germany), Nafion solution (5 wt % in water; Quintech, Göppingen,
Germany), alumina suspension (0.05 μm; MasterPrep Bühler,
Lake Bluff, Illinois), and Pt/C (30 wt % on Vulcan; De Nora North
America, New Jersey). Ultrapure water (∼18 MΩ cm) was
used in all experiments.
Wolf S., Roschger M., Genorio B., Garstenauer D, & Hacker V. (2023). Mixed Transition-Metal Oxides on Reduced Graphene Oxide as a Selective Catalyst for Alkaline Oxygen Reduction. ACS Omega, 8(12), 11536-11543.
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4

Graphene Oxide Synthesis from Graphite

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Graphite (Timrex KS44), as the precursor for graphene oxide (GO) synthesis, was obtained from Imerys and carbon black (Vulcan XC72R) from Cabot Corp. was used. Hydrazine hydrate (N2H4·H2O, reagent grade), potassium hydroxide (KOH, 1.0 M Fixanal 1 L Ampoule) and cobalt(ii) nitrate hexahydrate (Co(NO3)2·6H2O, 99.999% trace metals basis) were supplied by Sigma Aldrich. Cerium(iii) nitrate hexahydrate (Ce(NO3)3·6H2O, 99.5%) and manganese(ii) nitrate tetrahydrate (Mn(NO3)2·4H2O, 98%) were delivered by Alfa Aesar. Ammonium hydroxide solution (30–33% NH3 in H2O) from Honeywell was used. Isopropyl alcohol (2-propanol, ≥99.9%, UV/IR-grade) and ethanol (EtOH, 99.9% p.a.) were purchased from Carl Roth. Nafion® solution (5 wt% in H2O) and a commercial carbon black supported platinum catalyst (Pt/C, 20 wt% on Vulcan) were supplied by Quintech. An alumina suspension (Al2O3, 0.05 μm particle size) from MasterPrep® Bühler served as RDE polishing agent. The ultrapure water used throughout all experiments was purified with a Barnstead NANOpureWater Purification system to the desired resistivity of approx. 18 MΩ cm.
Wolf S., Roschger M., Genorio B., Garstenauer D., Radić J, & Hacker V. (2022). Ce-modified Co–Mn oxide spinel on reduced graphene oxide and carbon black as ethanol tolerant oxygen reduction electrocatalyst in alkaline media. RSC Advances, 12(55), 35966-35976.
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5

Synthesis of MnCeOx Catalysts

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Manganese(II) nitrate tetrahydrate [Mn(NO3)2·4H2O] was obtained from Alfa Aesar. Cerium(III)
nitrate hexahydrate [Ce(NO3)3·6H2O] was obtained from Aldrich. Sodium hydroxide (NaOH) was obtained
from Honeywell. Phenol (C6H5OH) was obtained
from Sigma-Aldrich. All the chemicals were used as received.
MnCeOx catalysts were prepared using
the coprecipitation method, and excess NaOH was added in aqueous solutions
of Mn(NO3)2 and Ce(NO3)3 (theoretical Mn/Ce atomic ratio = 1.5). The precipitate was centrifuged
to remove excess liquid and washed with water till the pH of water
after wash was no longer changed. The product was calcined in a muffle
furnace at 400 °C (ramp at 5 °C min–1)
for 6 h.
Ou X., Daly H., Fan X., Beaumont S., Chansai S., Garforth A., Xu S, & Hardacre C. (2022). High-Ionic-Strength Wastewater Treatment via Catalytic Wet Oxidation over a MnCeOx Catalyst. ACS Catalysis, 12(13), 7598-7608.
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6

Synthesis of Electrocatalysts for Energy Conversion

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Yttrium (III) nitrate hexahydrate (Y(NO3)3·6H2O, 99.9%), ruthenium (III) nitrosyl nitrate solution (Ru(NO)(NO3)x(OH)y, x + y = 3), Nafion® 117 solution (~ 5%), ruthenium (IV) oxide (RuO2, 99.9%), and sodium carbonate monohydrate (Na2CO3·H2O, 99.5%) were purchased from Sigma-Aldrich. Iridium (IV) oxide (IrO2, 99.9%), manganese (II) nitrate tetrahydrate (Mn(NO3)2·4H2O, 99.9%), iridium(III) chloride hydrate (IrCl3·xH2O, 99%), and manganese(IV) oxide (MnO2, 99.9%) were purchased from Alfa Aesar. Citric acid monohydrate (C6H8O7·H2O, 99%) and sodium hydroxide (NaOH, 99.4%) were from Fisher Chemical. Veritas® double distilled perchloric acid (HClO4, 70%) was obtained from GFS Chemicals. Yttrium(III) chloride hexahydrate (YCl3·6H2O, 99.9%) was purchased from Stream Chemicals. Tetrahydrofuran (THF) was obtained from Macron Fine Chemicals. Vulcan carbon XC-72 was purchased from Cabot Corporation. Hydrogen (H2, 99.999%) and oxygen (O2, 99.999%) were supplied by Airgas, Inc. All these chemicals and gases were used without further purification.
Zhang C., Wang F., Xiong B, & Yang H. (2022). Regulating the electronic structures of mixed B-site pyrochlore to enhance the turnover frequency in water oxidation. Nano Convergence, 9, 22.
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7

Nickel Foam Electrode Preparation

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The reagents nickel(II)
nitrate hexahydrate (Ni(NO3)2·6H2O, Alfa), cobalt(II) nitrate hexahydrate (Co(NO3)2·6H2O, Acros), manganese(II) nitrate tetrahydrate
(Mn(NO3)2·4H2O, Alfa Aesar),
sodium nitrate (NaNO3, Acros), and potassium hydroxide
(KOH, Fisher Chemical) were of analytic grade and were used as received
without further purification. Nickel foam (110 PPI, approximately
1.7 mm × 1 cm × 3 cm, Fucell CO., Ltd.) was washed with
6 M hydrochloric acid solution (HCl, Fisher Chemical) in an ultrasonic
bath for 30 min to remove the NiO layer on the surface and then subsequently
rinsed with deionized water and isopropanol (Acros Organics) for 10
min in an ultrasonic bath and dried at room temperature. The Ni foam
was covered with a Kapton film with adhesive to control the surface
area to be exposed to the electrolyte solution. Throughout the experiments,
ultrapure water with a resistivity of 18.2 MΩ·cm (Yamato,
Japan) was used.
Abebe E.M, & Ujihara M. (2022). Simultaneous Electrodeposition of Ternary Metal Oxide Nanocomposites for High-Efficiency Supercapacitor Applications. ACS Omega, 7(20), 17161-17174.
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8

Synthesis of Lanthanum Nickelate Nanorods

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As reagents for our reactions, we used manganese(II) nitrate tetrahydrate (Alfa Aesar, 98%), hydrated lanthanum(III) chloride (Acros Fisher, 64.5â€"70% LaCl 3 •xH 2 O), nickel(II) chloride hexahydrate (Fisher Scientific), concentrated hydrochloric acid (Fisher Chemicals, NF/FCC Grade), sodium hydroxide (EMD, ≥99%), sodium hypochlorite (Acros Fisher, 5%), dichloromethane (DCM, Acros Fisher, ≥99%), 200 nm track-etched polycarbonate membranes (Whatman), and 3 M (Imperial Wet or Dry) sandpaper. With the exception of NiCl 2 •6H 2 O and LaCl 3 •xH 2 O, all of the reagents were used without additional purification or processing steps. Commercial ruthenium(IV) oxide (Alfa Aesar, anhydrous, 99.9%) was utilized as a standard reference for OER measurements. Details for the parallel synthesis of LaMnO 3 nanorods are provided in the accompanying Supporting Information. We focus on LaNiO 3 herein.
McBean C.L., Liu H., Scofield M.E., Li L., Wang L., Bernstein A, & Wong S.S. (2017). Generalizable, Electroless, Template-Assisted Synthesis and Electrocatalytic Mechanistic Understanding of Perovskite LaNiO3 Nanorods as Viable, Supportless Oxygen Evolution Reaction Catalysts in Alkaline Media. ACS applied materials & interfaces, 9(29).
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