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Effects of solvent stabilizer in the preparation of highly active potassium-promoted Ru/MgO catalysts for ammonia synthesis

Paper ID Volume ID Publish Year Pages File Format Full-Text
52129 46865 2008 5 PDF Available
Title
Effects of solvent stabilizer in the preparation of highly active potassium-promoted Ru/MgO catalysts for ammonia synthesis
Abstract

A method for the preparation of highly active potassium-promoted Ru/MgO catalyst (K–Ru/MgO-a(Eg)) has been designed. Ethylene glycol was used as reducing agent for the reduction of RuCl3 at 433 K, simultaneously, as a solvent stabilizer for the size of ruthenium nanoparticles and the morphology of MgO. In the process of impregnating promoter, KNO3 was used as promoter precursor and the ethylene glycol protected ruthenium nanoparticles from agglomeration. The ruthenium particle size of the K–Ru/MgO-a(Eg) was in the range of 1.5–2.8 nm. The highest activity of the nano-catalyst was 6342μmolh-1g-cat-1 under 0.2 MPa at 658 K.

Keywords
Ammonia synthesis; Ruthenium; Ethylene glycol; Magnesia; Stabilizer
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Effects of solvent stabilizer in the preparation of highly active potassium-promoted Ru/MgO catalysts for ammonia synthesis
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 9, Issue 6, 31 March 2008, Pages 1214–1218
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
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