Journal ArticleDOI
Infrared and temperature-programmed desorption study of the acidic properties of ZSM-5-type zeolites
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TLDR
In this article, infrared spectroscopy and temperature-programmed desorption have been used to investigate the acidic properties of ZSM-5-type zeolites, showing that the most active acidic sites are located at the channel intersections, and the weaker acidic sites correspond to terminal silanol groups on the external surface of the zeolite or possibly nonzeolitic impurities.About:
This article is published in Journal of Catalysis.The article was published on 1981-07-01. It has received 577 citations till now. The article focuses on the topics: Thermal desorption spectroscopy & Desorption.read more
Citations
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Challenges in the Greener Production of Formates/Formic Acid, Methanol, and DME by Heterogeneously Catalyzed CO2 Hydrogenation Processes.
A. Álvarez,Atul Bansode,Atsushi Urakawa,Anastasiya Bavykina,Tim A. Wezendonk,Michiel Makkee,Jorge Gascon,Freek Kapteijn +7 more
TL;DR: In an attempt to give an order of magnitude regarding CO2 valorization, the most important aspects of CO2 capture and green routes to produce H2 are summarized and economical aspects of the production of methanol and DME are critically assessed.
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Thermolysis of waste plastics to liquid fuel: A suitable method for plastic waste management and manufacture of value added products—A world prospective
TL;DR: A review of the available literature in this field of active research and identifies the gaps that need further attention can be found in this article, where a number of pilot, demonstration and commercial plants processing various types of plastic wastes in Germany, Japan, USA, India, and elsewhere.
Journal ArticleDOI
On the interpretation of the NH3-TPD patterns of H-ZSM-5 and H-mordenite
Ferenc Lónyi,József Valyon +1 more
TL;DR: The species obtained from adsorption of ammonia over zeolite H-ZSM-5 and H-mordenite were characterized by temperature-programmed desorption (NH 3 -TPD) and infrared spectroscopy (IR) as discussed by the authors.
Journal ArticleDOI
Characterization of a Mo/ZSM-5 catalyst for the conversion of methane to benzene
TL;DR: In this article, a 2 wt% Mo/ZSM-5 catalyst was used for the dehydroaromatization of methane to benzene in the absence of an added oxidant.
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Catalytic upgrading of biomass pyrolysis vapors using transition metal-modified ZSM-5 zeolite
E.F. Iliopoulou,Stylianos D. Stefanidis,Konstantinos G. Kalogiannis,Andreas Delimitis,Angelos A. Lappas,Kostas S. Triantafyllidis +5 more
TL;DR: In this paper, an equilibrium, commercial diluted ZSM-5 catalyst was used as the base case, in comparison with a series of nickel (Ni) and cobalt (Co) modified variants at varying metal loading.
References
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Journal ArticleDOI
Thermal desorption of gases
TL;DR: In this paper, the activation energy, rate constant and order of reaction from flash-filament desorption experiments were examined, and two heating schedules were considered: a linear variation of sample temperature with time (T = T 0+st), and a reciprocal temperature variation (1 T = 1 T 0 −αt).
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A study of the surface structure of decationized Y zeolite by quantitative infrared spectroscopy
Hughes Thomas R,Harry M. White +1 more
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Reactions on ZSM-5-type zeolite catalysts
TL;DR: In this paper, the main features of the catalytic conversion process are discussed and a mechanism is suggested for the formation of sorbed C3,C4 olefinic residues, and for initial carbon-carbon bond formation from methanol.
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Infrared, Microcalorimetric, and Electron Spin Resonance Investigations of the Acidic Properties of the H-ZSM-5 Zeolite
Jacques C. Vedrine,Aline Auroux,Vera Bolis,Pierre Dejaifve,Claude Naccache,P Wierzchowski,Eric G. Derouane,Janos B. Nagy,Jean-Pierre Gilson,J Vanhooff +9 more
TL;DR: The infrared spectra of the H-ZSM-5 zeolite calcined at temperatures up to 1173 K, and the corresponding electron spin resonance and microcalorimetric data are discussed in this paper.
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Elucidation of the mechanism of conversion of methanol and ethanol to hydrocarbons on a new type of synthetic zeolite
Eric G. Derouane,Janos B. Nagy,Pierre Dejaifve,Jan H. C. van Hooff,Ben P. Spekman,Jacques C. Vedrine,Claude Naccache +6 more
TL;DR: In this paper, a carbenium ion-based mechanism was proposed for the conversion of methanol and ethanol to branched aliphatics on a synthetic zeolite of the type H-ZSM-5.