Ammonium Niobium Oxalate (ANO) [PDF]
SynOpen, 2021 Niobium is a metal whose major reserves are found in Brazil. Ammonium Niobium Oxalate (ANO) is a stable, cheap, readily available and water-soluble niobium acid catalyst still underrepresented in literature. This manuscript highlights some interesting applications of ANO as a promising catalyst to Green and Sustainable Chemistry.
Lorena Fortes +4 more
doaj +2 more sources
The crystal and molecular structure of ammonium titanyl oxalate [PDF]
Inorganica Chimica Acta, 1974 Ammonium titanyl oxalate monohydrate, (NH4)2 TiO(C2O4)2·H2O, is monoclinic with cell parameters A = 13.473(2), B = 11.329(1), C = 17.646(2) Å, β = 126.66(1)°. The space group is P21/c with Z = 8, dc = 1.808 g cm−3 and dm = 1.80 g cm−3.
Gellings, P.J. +2 more
core +4 more sources
Hygroscopic behavior of atmospherically relevant water-soluble carboxylic salts and their influence on the water uptake of ammonium sulfate [PDF]
Atmospheric Chemistry and Physics, 2011 The hygroscopic behavior of atmospherically relevant water-soluble carboxylic salts and their effects on ammonium sulfate were investigated using a hygroscopicity tandem differential mobility analyzer (H-TDMA).
Z. J. Wu +4 more
doaj +5 more sources
Precipitation of Ferrous Oxalate from Ferrous Ammonium Sulfate in Oxalic Acid Solution
Processes, 2022 A kinetic study was conducted experimentally for the precipitation of ferrous oxalate. The ferrous oxalate, in the form of dihydrate (FeC2O4·2H2O), was produced by the acidic dissolution of ferrous ammonium sulfate (Fe(NH4)2(SO4)2) in an aqueous solution of oxalic acid, and then precipitated by nucleation and particle growth from supersaturated ...
Wonzin Oh, Jeongju Kim, JUNG HYUN LEE
exaly +2 more sources
Automatic classification of kidney stone components based on smartphone microscopy and the GoogLeNet model [PDF]
BMC UrologyBackground To develop an automated classification system for urinary stone composition by integrating smartphone-based microscopic imaging (TIPSCOPE) with the GoogLeNet architecture, with the goal of enabling rapid, accurate, and cost-effective analysis ...
Yuxuan Du +18 more
doaj +2 more sources
Hydrothermal Crystallization of Niobium Oxide Nanorods Studied by 93Nb Nuclear Magnetic Resonance
Chinese Journal of Magnetic Resonance, 2023 The crystallization process of hydrothermally synthesizing niobium oxide nanorods with ammonium niobium oxalate precursor was investigated using 93Nb NMR, combined with X-ray powder diffraction, transmission electron microscopy and quantum chemistry ...
SHEN Changzhi +3 more
doaj +1 more source
Simultaneous Degumming and Extraction of a Nature Gum from Raw Hemp
Journal of Natural Fibers, 2022 In order to develop a green and efficient hemp degumming process, an ammonium oxalate-enzyme combined process was proposed and the pectin was extracted from the degumming solution. Pectin can be used as a stabilizer, gel, emulsifier, and thickener in the
Zhenrong Zheng +3 more
doaj +1 more source
THORIUM AMMONIUM OXALATE. [PDF]
Journal of the American Chemical Society, 1914 n ...
James, C. +2 more
openaire +1 more source
Do Aqua Regia and EPA 3051A methods underestimate the pseudo-total P content in clay soil fraction? [PDF]
Ciência e Agrotecnologia, 2020 It is common the use of 3051A and aqua regia methods to assess the pseudo-total and total P contents in soil and in its fractions. However, previous study has shown the formation of large amounts of short-range order materials (SRO) in the residues of ...
Vander Freitas Melo +1 more
doaj +2 more sources
THE CARRYING DOWN OF AMMONIUM OXALATE BY OXALATES OF THE RARE EARTHS. [PDF]
Journal of the American Chemical Society, 1906 n ...
Baxter, Gregory Paul +1 more
openaire +1 more source