Actinide oxalates, solid state structures and applications

Effect of Sucrose Concentration on Oxalic Acid Biosynthesis by Aspergillus Niger

“…It has many uses: beside metal treatment, chemical and pharmaceutical applications, oxalic acid may be used in biohydrometallurgy [Biswas et al 2013, Kursunoglu andMaya 2015], bleaching [Aghaie et al 2009, Musiał et al 2011, waste water treatment [Wei et al 2013, Abraham et al 2014 and wastes utilisation [Sun andQiu 2012, Asghari et al 2013]. In recent years there is a growing interest in oxalic acid application in food industry as a preservative food additive [Jin et al 2014, Riuz-Jimenez et al 2014, Cefola and Pace 2015, Li et al 2016, Wang et al 2016.…”

Synthesis and Direct Sintering of Nanosized (MIV,MIII)O2‐x Hydrated Oxides as Electrolyte Ceramics

“…[14] Thus, even if the use of wet chemistry methods could ensure the co-precipitation of the variousc ations considered in homogenousp recursors ystems, it remains poorly investigated so far.F or actinide-baseds ystems, crystallized precursors precipitated at room temperature or in mild hydrothermalc onditions were particularly focused on the use of oxalic acid as ac omplexing agent. [15] Similarly,attempts to prepare homogenous doped-ceriae lectrolytes mainly concerned sol-gel methods. [16] The development of new ways of preparation based on the directp reparation of mixed-oxides is thus an open field for investigation.…”

Structural chemistry of uranium phosphonates

“…The structure exhibits a complex 3D framework, in which U(VI) is found in a square bipyramidal geometry and An(IV) is in a distorted dodecahedral environment. The UO 6 and AnO 8 polyhedra are bridged by monoprotonated MDP ligands to form the framework (Fig. 28).…”

“…Inorganic uranium compounds, such as uranium minerals and oxides, fluorides, silicates, sulfates, phosphates, vanadates, and borates in synthesized phases, have been thoroughly investigated [1][2][3][4]. These materials are critically relevant to mining and extraction processes, to separations procedures, and to the long term storage of nuclear fuels [5,6]. On the other hand, organic ligands bearing O-donor and N-donor sites exhibit high binding affinity for uranium ions, thereby resulting in various uranium bearing hybrid materials.…”