Journal ArticleDOI
Potassium and Silver Salts of Tungstophosphoric Acid as Catalysts in Dehydration of Ethanol and Hydration of Ethylene
TLDR
In this paper, the catalytic properties of tungstophosphoric acid (HPW) with varying amounts of the cations KxH3−xPW12O40 and AgxH 3−xpW 12O40 have been studied.About:
This article is published in Journal of Catalysis.The article was published on 2002-04-25. It has received 112 citations till now. The article focuses on the topics: Ethylene & Catalysis.read more
Citations
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Journal ArticleDOI
Dehydration of Ethanol to Ethylene
Minhua Zhang,Yingzhe Yu +1 more
TL;DR: An up-to-date review of the literature available on the subject of ethanol to ethylene can be found in this paper, where the authors present an overview of the current state-of-the-art in this area.
Journal ArticleDOI
Conversion of fructose and glucose into 5-hydroxymethylfurfural catalyzed by a solid heteropolyacid salt
TL;DR: A solid heteropolyacid salt Ag3PW12O40 has been used as a heterogeneous catalyst for the production of 5-hydroxymethylfurfural (HMF) from fructose and glucose.
Journal ArticleDOI
Catalytic dehydration of bioethanol to ethylene over TiO2/γ-Al2O3 catalysts in microchannel reactors
TL;DR: The physicochernical properties of these catalysts are characterized by X-ray diffraction (XRD) and FT-IR spectrum, and the effects of operation parameters, such as ethanol concentration, reaction temperature and liquid hourly space velocity, have been investigated experimentally as mentioned in this paper.
Journal ArticleDOI
Ethylene and diethyl-ether production by dehydration reaction of ethanol over different heteropolyacid catalysts
TL;DR: In this paper, three different HPA catalysts, namely tungstophosphoric acid (TPA), silicotungsticacid (STA), and molybdophosphorous acid (MPA), were used for the dehydration reaction of ethanol in a temperature range of 140-250°C.
Journal ArticleDOI
Photodegradation of dye pollutants catalyzed by porous K3PW12O40 under visible irradiation.
TL;DR: The formation of active oxygen species such as the O2-*/ HO2* and *OH are proposed to be responsible for the degradation of dyes, and the K3PW12040 catalyst is very stable and very easily separated from the reaction system for reuse.
References
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Journal ArticleDOI
Heterogeneous catalysis by heteropoly compounds of molybdenum and tungsten
TL;DR: In this article, the authors defined heteropoly acids as polymeric oxoanions which are formed by the condensation of more than two different oxo-oanions [Eq. (1)l.
Journal ArticleDOI
Heteropolyanions containing two different heteroatoms—I
T.J.R. Weakley,S.A. Malik +1 more
TL;DR: In this paper, the following heteropolyanions of general formula XZW11O40H2n− have been prepared: X, Z = Si, Co(III), Ge, Co, P, Ni(II), Ni, Ni, Ge, Ni (II), P,Ni(II); as well as the unstable anion SiCoMo11O41H26−.
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1H and 31P MAS NMR studies of solid heteropolyacids and H3PW12O40 supported on SiO2
V.M. Mastikhin,S. M. Kulikov,A. V. Nosov,Ivan V. Kozhevnikov,I. L. Mudrakovsky,M. N. Timofeeva +5 more
TL;DR: In this article, the NMR spectra of solid heteropolyacids (HPA) H m XY 12 O 40 (X = P, Si; Y = W, Mo; m = 3, 4) supported on SiO 2 were studied and different types of supported species were found to depend on the surface HPA concentration.
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Characterization of 12-tungstophosphoric acid and related salts using photoacoustic spectroscopy in the infrared region: I. Thermal stability and interactions with ammonia
James Highfield,John B. Moffat +1 more
TL;DR: In this article, photoacoustic spectroscopy has been applied in the infrared region to the characterization of a number of heteropoly compounds which show interesting trends in activity and selectivity in the conversion of methanol to hydrocarbons.
Journal ArticleDOI
Acidic and catalytic properties of CsxH3−xPW12O40 heteropolyacid compounds
TL;DR: The catalytic properties of the more acidic catalysts are in the range Cs2/2.7 if considering a wide range of acid strengths evidenced by methanol conversion as discussed by the authors.