MgFe₂O₄‐Supported Ru Catalyst for Ammonia Synthesis: Promotive Effect of Chlorine

Abstract

The effect of Ru precursor on the activity of Ru/MgFe2O4 catalyst was studied using different Ru compounds. It was found that the activities of the catalysts prepared from Cl containing precursors were much higher than those prepared from non‐Cl precursors. Mg thin film was formed on the surfaces of the catalysts synthesized from RuCl3 and Ru(NO3)3 precursors. This Mg thin film, along with residual Cl, was found essential to attain the highest activity for ammonia synthesis using Ru/MgFe2O4 catalyst.

Synthesis and Characterization of Zinc and Vanadium Co-Substituted CoFe2O4 Nanoparticles Synthesized by Using the Sol-Gel Auto-Combustion Method

“…In recent decades, the synthesis of nanostructured spinel ferrites with the general formula MFe 2 O 4 (where M = Co, Ni, Mg, Mn, etc.) has been investigated in order to improve their unique properties such as magneto-optical properties [ 1 , 2 , 3 ], catalytic properties [ 4 , 5 ], electrical resistivity [ 6 ], magneto-resistivity [ 7 ], biocompatibility [ 8 , 9 , 10 ], porosity [ 11 ], etc. The spinel ferrites have a cubic unit cell containing 56 atoms, where 32 of them are oxygen anions, and the other 24 atoms are metallic cations of which only eight occupy tetrahedral sites (A-site) while the other 16 atoms occupy octahedral sites (B-site) [ 12 , 13 ].…”

Silver Nanoparticles Formation by Nanosecond Pulsed Laser Irradiation in an Aqueous Solution of Silver Nitrate; Effect of Sodium bis (2-ethyl hexyl) Sulfosuccinate

“…The fastest-growing field of development in the world is nanotechnology, and researchers are involved in developing new nanomaterials through new and straightforward processes [1][2][3][4][5][6][7]. In the past few decades, the field of nanotechnology has shown remarkable successes, with various methodologies devised for the synthesis of nanoparticles of unique shapes and dimensions in compliance with specific requirements [8][9][10][11][12][13][14][15].…”

Influence of Surfactant Additives on Photochemical Synthesized Silver Nanoparticles using UV Pulsed Laser Irradiations in Aqueous Silver Nitrate Solution

“…The changes in the composition of size or surface can affect the physical and chemical characteristics of the nanoparticles [14,15]. Metal nanoparticles have been used in many industries in recent decades due to their wide variety of applications [16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33]. The physical, chemical, and electrical properties of nanoparticles dramatically change at a specific size range (1-100 nm).…”