Patent
Production of gasoline hydrocarbons
TLDR
In this article, a process for the production of aromatics-rich gasoline boiling-range hydrocarbons from the lower alcohols methanol, ethanol and propanol, or their ethers is described.Abstract:
This specification discloses a process for the production of aromatics-rich gasoline boiling-range hydrocarbons from the lower alcohols methanol, ethanol and propanol, or their ethers. The process is carried out in two or more stages. In the first stage, an alcohol or an ether is contacted with a condensation catalyst to produce a reaction product containing aliphatic dehydration products thereof and water. In a subsequent stage, at least a portion of the product of the first reaction stage is contacted with, as a catalyst, a crystalline aluminosilicate zeolite having a silica to alumina ratio of at least 12 and a constraint index of 1 to 12 to convert it in high yield to gasoline boiling-range hydrocarbons containing a high proportion of aromatics. In a preferred aspect a lower alcohol, suitably methanol, is dehydrated to an ether or a lower olefin or mixtures thereof, in the first stage, and this first stage product is then converted, over the referred to catalyst, to gasoline boiling-range hydrocarbons.read more
Citations
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Journal ArticleDOI
Comparative Study between Direct and Pseudomorphic Transformation of Rice Husk Ash into MFI-Type Zeolite
Hallah Ahmad Alyosef,Hans Roggendorf,Denise Schneider,Alexandra Inayat,Julia Welscher,Wilhelm Schwieger,Tom Münster,Gert Kloess,Suzan S. Ibrahim,Dirk Enke +9 more
TL;DR: Pre-shaped mesoporous amorphous rice husk ash and MCM-41 derived from RHA as a silica source were transformed into MFI-type zeolites using two different structure-directing agents.
Patent
Fast-fluidized bed reactor for MTO process
TL;DR: In this paper, an oxygenate conversion process and fast-fluidized bed reactor with an upper disengaging zone and a lower reaction zone is described, where the feedstock in the presence of a diluent is passed to the dense phase zone containing a non-zeolitic catalyst to effect at least a partial conversion to light olefins.
Patent
Compositions and Methods for Producing Fermentation Products and Residuals
TL;DR: In this paper, the authors present compositions and methods designed to increase value output of a fermentation reaction that yields a first product, intended for commercialization, and a fermentation residual used, for example, as animal feed.
Patent
Process for manufacturing olefins
TL;DR: In this article, a lower alcohol and/or ether feed is selectively converted to a mixture of light olefins, including ethylene and propylene, by catalytic contact of the feed, for example methanol or dimethyl ether, with certain crystalline aluminosilicate zeolite catalysts exemplified by HZSM-5.
Patent
Process for producing polymer grade olefins
TL;DR: In this article, the authors proposed a process for the production of light olefins from an oxygenate feedstock using a metal aluminophosphate catalyst, which can provide the advantage of extended catalyst life and greater catalyst stability in the oxygenate conversion zone.
References
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Patent
Preparation of aromatics
TL;DR: In this article, a process for the preparation of aromatic compounds is described, which involves contacting a feed consisting essentially of C2-C4 paraffins and/or olefins with a crystalline aluminosilicate of the ZSM-5 type and recovering the aromatics produced.
Patent
Process for the production of aromatic compounds
TL;DR: In this article, a process for the preparation of AROMATIC COMPOUNDS in high-yield environments is described, which involves contacting a PARTICULAR FEED CONSISTING ESSENTIALLY OF MIXTURES OF PARAFFINS, AND/OR OLEFINS, and/or NAPTHENES with a CRYSTALLINE ALUMINILICATE OF the ZSM-5 type under conditions of TEMPERATURE and Space VELOCITY.
Patent
Conversion of polar compounds using highly siliceous zeolite-type catalysts
TL;DR: In this paper, a method of converting an organic polar compound comprising contacting the same in a conversion zone under conversion conditions with a crystalline aluminosilicate catalyst was proposed, with a silica/alumina ratio of more than 10/1.
Patent
Conversion of dimethyl ether
Gorin Everett,Manuel H Gorin +1 more
TL;DR: In this article, a process for the conversion of a mixture of dimethyl ether in the presence of a predominantly Isobutane diluent to a mixture with normally liquid hydrocarbons is described.
Patent
Production of methane and aromatics
H Heinemann,P Weisz +1 more
TL;DR: In this article, the authors describe a combination of a combined AROMATIZATION and LIGHT GAS HYDROGENOLYSIS where by NAPHTHA or LIGHT Gas HYDROCARBONS are inITIALLY AROMatIZED in CONTACT with a ZSM-5 type of SYNTHETIC ALUMINOSILICATE ZEOLITE MOLECULAR SIEVE under SPECIFIED CONDITIONS to produce a product at least 30 weight per cent of which is a MIXTUE of AROM