نتایج جستجو برای: phosphotungstic acid
تعداد نتایج: 747454 فیلتر نتایج به سال:
An intraocular mass lesion was found in the left eyeball in a spayed female Pembroke Welsh Corgi dog. The surgically resected left eyeball was pathologically examined. Histologically, the mass lesion consisted of proliferation of the atypical cuboidal or columnar epithelial cells, arranging in papillary, tubular or solid form. In addition, some neoplastic cells showed oncocytic change character...
THE USUAL METHOD of peptide estimation requires the assay of a protein-free filtrate for amino-acid concentration before and after hydrolysis. Peptide amino acid is then calculated by difference (1). In another method (2) specifically designed for urine, the peptides are precipitated with phosphotungstic acid from a trichloroacetic acid filtrate. The precipitate is dissolved and color is formed...
Valorisation of glycerol with cinnamaldehyde over phosphotungstic acid encapsulated on a NaY zeolite
• Acetalization of glycerol with cinnamaldehyde was performed using PW immobilized on NaY. The material NaY-PW4 showed high activity. Good selectivity to (2-(2-phenyl-1-ethenyl)-1,3-dioxolan-4-yl)methanol product. After fifth utilizations, the good Glycerol reacted over phosphotungstic acid (PW) encapsulated NaY at 100°C. Catalysts containing different contents were prepared. activity increased...
Direct liquid fuel cells (DLFCs) are proposed to address the problems of high cost and complex storage transportation hydrogen in traditional hydrogen–oxygen proton exchange membrane cells. However, present fuels organic small molecules used DLFCs restricted sluggish electrochemical kinetics easily poisoning precious metal catalysts. Herein, we demonstrate reduced phosphotungstic acid as a for ...
Poly(ionic liquid)s nanofiber (PIL NF) membrane was derived from polyacrylonitrile by converting its cyano groups to imidazoline moieties via cyclization with ethylenediamine, followed quaternization 1-bromobutane. The novel PIL NF is further decorated photocatalyst phosphotungstic acid PW12 anion exchanging give PW-PIL. degradation rate of the supported towards methyl orange irradiated under v...
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