Oxidative activation of methane on lanthanum oxide and nickel-lanthanum oxide catalysts

Dixit, Marm; MENON, A. R.; Baruah, Renika; Bhargav, Atul; Sharma, Sudhanshu

doi:10.1007/s11144-015-0864-x

Cited by 9 publications

(5 citation statements)

References 44 publications

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“…3,4 MCRs with heterogeneous catalysts offer great advantages due to atom economy, catalyst recyclability, low catalyst loading and high synthetic yields apart from the benets that it may offer to the environment. [5][6][7] Some multi-component one-pot reactions involving heterogeneous catalysts include the synthesis of 1,4-dihydropyridines, 8,9 xanthenes, 10,11 spirooxindole-pyrimidines, 12 pyrroles, 13 quinoxalines, 14 pyridines, 15 isoquinolones 16 and diazepines. [17][18][19][20] Benzodiazepines are heterocyclic compounds with pharmacological applications 21,22 involving anti-tumor and anti-parasitic activities.…”

Section: Introductionmentioning

confidence: 99%

“…La 2 O 3 is commonly used as a support oxide in gas solid reaction in catalytic convertors and methane activation. [44][45][46][47] Recently we demonstrated the utility of lanthanum oxide and lanthanum hydroxide as recyclable catalysts for Michael addition and Hantzsch reactions. 48 The economic benet offered by synthetic ease of the catalysts, recyclability and the removal of tedious purication procedures is key to the development of heterogeneous catalytic materials.…”

Section: Introductionmentioning

confidence: 99%

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Green synthesis of 1,4-benzodiazepines over La₂O₃ and La(OH)₃ catalysts: possibility of Langmuir–Hinshelwood adsorption

et al. 2016

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Green synthesis of 1,4-benzodiazepines over La₂O₃ and La(OH)₃ catalysts: possibility of Langmuir–Hinshelwood adsorption

et al. 2016

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“…Lanthanum oxide (La 2 O 3 ) is an important metal oxide that has novel electronic , optical, magnetic, catalytic, and mechanical properties. It is one of the most effective catalytic materials for exhaust treatment reactions. − It is used as an effective support for many hydrocarbon conversion reactions due to its high basicity. , It is also found to improve the resistance to coking and sintering during long hour reaction conditions and hence can be potentially useful as the industrial catalyst support. − …”

Section: Introductionmentioning

confidence: 99%

Nonreducible, Basic La₂O₃ to Reducible, Acidic La_2–xSb_xO₃ with Significant Oxygen Storage Capacity, Lower Band Gap, and Effect on the Catalytic Activity

et al. 2016

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This paper describes one-pot solution combustion synthesis of La2–x Sb x O3 (0.02 ≤ x ≤ 0.10). Detailed characterization using X-ray diffraction (XRD) and X- ray photoelecron spectroscopy (XPS) is carried out to understand the doping effect and the oxidation state of antimony. Further, temperature-programmed desorption (TPD) with CO2 is performed for evaluating the basic property and temperature-programmed reduction (TPR) with H2 has been employed to obtain the oxygen storage capacity. The comparative study of La2O3, La2–x Sb x O3 (0.02 ≤ x ≤ 0.10) shows that as the concentration of Sb increases, the basicity decreases and the oxygen storage capacity increases. Thus, nonreducible and basic La2O3 can be transformed to significantly reducible and acidic La2–x Sb x O3 (0.02 ≤ x ≤ 0.10). Further, solid state UV spectroscopy shows that due to the antimony doping, band gap of La2O3 decreases significantly. Moreover, antimony doping also modifies the support property of La2O3 as demonstrated in the catalytic CO2 methanation reaction in the presence of hydrogen. Ru-doped La2O3 and La1.96Sb0.04O3 shows different selectivity toward methane formation and the later favors the reverse water gas shift reaction.

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“…For countries with large reserves of cheap natural gas, the practical implementation of these processes today seems economically justified [9]- [12]. Therefore, the creation of highly efficient, selective and stable catalysts for processing light hydrocarbons to produce valuable products of petrochemical synthesis is an important practical and strategic objective.…”

Section: Introductionmentioning

confidence: 99%

Processing of Methane over the Oxide Catalysts

Dossumov¹,

Yergaziyeva²,

Myltykbayeva³

et al. 2017

IJMMM

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Catalysis of the supported oxide catalysts in the direction of the methane oxidation reaction is investigated. Modified nickel-containing catalysts studied at the reaction of partial oxidation of methane to synthesis gas. The effect of modifying additives (cerium and lanthanum oxides) on the activity and resistance to coking NiO / γ -Al 2 O 3 catalyst was defined. The introduction of cerium and lanthanum oxides increases resistance to catalyst coking. Rising of lanthanum modified catalyst activity associated with a decrease in its recovery temperature and increased dispersion of particles of metallic nickel. It is found that the developed 3% NiO + 2% La 2 O 3 / ɣ-Al 2 O 3 catalyst for 250 hours under laboratory conditions (CH 4 : O 2 = 2: 1, T r = 750 o C and W = 1000 h -1 ) does not lose its activity. It was determined that the use of a tungsten heteropoly acid as the active phase supported on Al 2 O 3 can direct the process towards the formation of ethylene.

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Oxidative activation of methane on lanthanum oxide and nickel-lanthanum oxide catalysts

Cited by 9 publications

References 44 publications

Green synthesis of 1,4-benzodiazepines over La₂O₃ and La(OH)₃ catalysts: possibility of Langmuir–Hinshelwood adsorption

Green synthesis of 1,4-benzodiazepines over La₂O₃ and La(OH)₃ catalysts: possibility of Langmuir–Hinshelwood adsorption

Nonreducible, Basic La₂O₃ to Reducible, Acidic La_2–xSb_xO₃ with Significant Oxygen Storage Capacity, Lower Band Gap, and Effect on the Catalytic Activity

Processing of Methane over the Oxide Catalysts

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Oxidative activation of methane on lanthanum oxide and nickel-lanthanum oxide catalysts

Cited by 9 publications

References 44 publications

Green synthesis of 1,4-benzodiazepines over La2O3 and La(OH)3 catalysts: possibility of Langmuir–Hinshelwood adsorption

Green synthesis of 1,4-benzodiazepines over La2O3 and La(OH)3 catalysts: possibility of Langmuir–Hinshelwood adsorption

Nonreducible, Basic La2O3 to Reducible, Acidic La2–xSbxO3 with Significant Oxygen Storage Capacity, Lower Band Gap, and Effect on the Catalytic Activity

Processing of Methane over the Oxide Catalysts

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Product

Resources

About

Green synthesis of 1,4-benzodiazepines over La₂O₃ and La(OH)₃ catalysts: possibility of Langmuir–Hinshelwood adsorption

Green synthesis of 1,4-benzodiazepines over La₂O₃ and La(OH)₃ catalysts: possibility of Langmuir–Hinshelwood adsorption

Nonreducible, Basic La₂O₃ to Reducible, Acidic La_2–xSb_xO₃ with Significant Oxygen Storage Capacity, Lower Band Gap, and Effect on the Catalytic Activity