Synthesis of hexamethylene-1,6-dicarbamate by methoxycarbonylation of 1,6-hexamethylene diamine with dimethyl carbonate over bulk and hybrid heteropoly acid catalyst
Sign Up to like & getrecommendations! Published in 2017 at "Research on Chemical Intermediates"
DOI: 10.1007/s11164-017-3030-4
Abstract: Synthesis of HDC by methoxycarbonylation of HDA with DMC was carried out over the bulk and hybrid heteropoly acid (HPA) catalyst. The catalysts were systematically characterized by XRD, FTIR, SEM and NH3-TPD techniques. The by-products… read more here.
Keywords: heteropoly acid; bulk hybrid; hexamethylene; hybrid heteropoly ... See more keywords
Thermally stable imidazole/heteropoly acid composite as a heterogeneous catalyst for m-xylene ammoxidation
Sign Up to like & getrecommendations! Published in 2021 at "Research on Chemical Intermediates"
DOI: 10.1007/s11164-020-04342-1
Abstract: Ammoxidation of m -xylene is evaluated in the presence of a customized heteropoly acid catalyst as an imidazole/molybdovanadophosphoric acid (imidazole/PMoV). Imidazole is employed to maintain its heterogeneous phase during the ammoxidation reaction and to provide… read more here.
Keywords: pmov; imidazole pmov; xylene; heteropoly acid ... See more keywords
Heteropoly acid catalysts for the valorization of biorenewables: Isomerization of caryophyllene oxide in green solvents
Sign Up to like & getrecommendations! Published in 2017 at "Molecular Catalysis"
DOI: 10.1016/j.mcat.2017.12.019
Abstract: Abstract The isomerization of caryophyllene oxide, one of the most widespread sesquiterpenes found in various essential oils, is catalyzed by the acidic Cs salt of tungstophosphoric heteropoly acid, Cs2.5H0.5PW12O40, to give rare polycyclic oxygenated sesquiterpenes… read more here.
Keywords: heteropoly acid; caryophyllene oxide; isomerization caryophyllene; valorization biorenewables ... See more keywords
Assembly of heteropoly acid into localized porous structures for in situ preparation of silver and polypyrrole nanoparticles
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DOI: 10.1039/c8ra07939k
Abstract: A simple and facile method to fabricate porous films which were locally patterned by heteropoly acid was developed in this study. The mixture of poly(methyl methacrylate) and stabilizer dichloromethane solution which contains heteropoly acid aqueous… read more here.
Keywords: assembly heteropoly; heteropoly acid; acid localized; polypyrrole ... See more keywords
Preparation supported heteropoly (acid)/polyaniline catalysts and catalytic synthesis of tributyl citrate
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DOI: 10.1039/c9ra06071e
Abstract: A series of polyaniline supported heteropoly acids were prepared through a simple method at room temperature. read more here.
Keywords: supported heteropoly; polyaniline catalysts; heteropoly acid; preparation supported ... See more keywords
Preparation of Vitamin K3 in Mo–V–P Heteropoly Acid Solutions by Diene Synthesis
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DOI: 10.1134/s0023158420010012
Abstract: The possibility of obtaining vitamin K3 (2-methyl-1,4-naphthoquinone, menadione) by diene synthesis from accessible substrates such as 2-methylphenol (o-cresol) and 2-methylaniline (o-toluidine) was shown. The bifunctional catalysts of these processes are the aqueous solutions of Mo–V–P… read more here.
Keywords: synthesis; heteropoly acid; acid solutions; diene synthesis ... See more keywords
Study on the Synthesize, Characterization, and Conductive Performance of Nickelzircomolybdnum Heteropoly Acid Salt with Keggin Structure
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DOI: 10.1155/2019/9501593
Abstract: A novel heteropoly acid salt, Na6[Ni(Mo11ZrO39)]·20H2O, has been synthesized by the means of acidification and adding the reactants into the solution step by step. The heteropoly compound was characterized by elemental analysis, TGA/DSC, infrared spectrum,… read more here.
Keywords: heteropoly acid; heteropoly; acid salt; keggin ... See more keywords