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Title: Process for producing dimethyl ether from synthesis gas

Abstract

This invention pertains to a Fischer Tropsch process for converting synthesis gas to an oxygenated hydrocarbon with particular emphasis on dimethyl ether. Synthesis gas comprising carbon monoxide and hydrogen are converted to dimethyl ether by carrying out the reaction in the presence of an alkali metal-manganese-iron carbonyl cluster incorporated onto a zirconia-alumina support.

Inventors:
Publication Date:
Research Org.:
Air Products and Chemicals Inc
OSTI Identifier:
7261821
Patent Number(s):
US 4521540; A
Application Number:
PPN: US 6-592324
Assignee:
Air Products and Chemicals, Inc., Allentown, PA (United States) NETL; EDB-94-122007
DOE Contract Number:
AC22-80PC30021
Resource Type:
Patent
Resource Relation:
Patent File Date: 22 Mar 1984
Country of Publication:
United States
Language:
English
Subject:
10 SYNTHETIC FUELS; 01 COAL, LIGNITE, AND PEAT; ALKALI METALS; CATALYTIC EFFECTS; CARBON MONOXIDE; METHANATION; IRON COMPOUNDS; MANGANESE; METHYL ETHER; FISCHER-TROPSCH SYNTHESIS; ALUMINIUM OXIDES; CARBONYLS; CATALYST SUPPORTS; ZIRCONIUM OXIDES; ALUMINIUM COMPOUNDS; CARBON COMPOUNDS; CARBON OXIDES; CHALCOGENIDES; CHEMICAL REACTIONS; ELEMENTS; ETHERS; METALS; ORGANIC COMPOUNDS; ORGANIC OXYGEN COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS; ZIRCONIUM COMPOUNDS; 100200* - Synthetic Fuels- Production- (1990-); 010408 - Coal, Lignite, & Peat- C1 Processes- (1987-)

Citation Formats

Pierantozzi, R. Process for producing dimethyl ether from synthesis gas. United States: N. p., 1985. Web.
Pierantozzi, R. Process for producing dimethyl ether from synthesis gas. United States.
Pierantozzi, R. 1985. "Process for producing dimethyl ether from synthesis gas". United States. doi:.
@article{osti_7261821,
title = {Process for producing dimethyl ether from synthesis gas},
author = {Pierantozzi, R.},
abstractNote = {This invention pertains to a Fischer Tropsch process for converting synthesis gas to an oxygenated hydrocarbon with particular emphasis on dimethyl ether. Synthesis gas comprising carbon monoxide and hydrogen are converted to dimethyl ether by carrying out the reaction in the presence of an alkali metal-manganese-iron carbonyl cluster incorporated onto a zirconia-alumina support.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 1985,
month = 6
}
  • This invention pertains to a Fischer Tropsch process for converting synthesis gas to an oxygenated hydrocarbon with particular emphasis on dimethyl ether. Synthesis gas comprising carbon monoxide and hydrogen are converted to dimethyl ether by carrying out the reaction in the presence of an alkali metal-manganese-iron carbonyl cluster incorporated onto a zirconia-alumina support.
  • This invention relates to a process for producing ethylidene diacetate by the reaction of dimethyl ether, acetic acid, hydrogen and carbon monoxide at elevated temperatures and pressures in the presence of an alkyl halide and a heterogeneous, bifunctional catalyst that is stable to hydrogenation and comprises an insoluble polymer having pendant quaternized heteroatoms, some of which heteroatoms are ionically bonded to anionic Group VIII metal complexes, the remainder of the heteroatoms being bonded to iodide. In contrast to prior art processes, no accelerator (promoter) is necessary to achieve the catalytic reaction and the products are easily separated from the catalystmore » by filtration. The catalyst can be recycled for 3 consecutive runs without loss in activity.« less
  • This invention relates to a process for producing ethylidene diacetate by the reaction of dimethyl ether, acetic acid, hydrogen and carbon monoxide at elevated temperatures and pressures in the presence of an alkyl halide and a heterogeneous, bifunctional catalyst that is stable to hydrogenation and comprises an insoluble polymer having pendant quaternized heteroatoms, some of which heteroatoms are ionically bonded to anionic Group VIII metal complexes, the remainder of the heteroatoms being bonded to iodide. In contrast to prior art processes, no accelerator (promoter) is necessary to achieve the catalytic reaction and the products are easily separated from the catalystmore » by filtration. The catalyst can be recycled for 3 consecutive runs without loss in activity.« less
  • A process is described for separating dimethyl ether from a hydrocarbon mixture containing the same which comprises contacting the hydrocarbon mixture with an aqueous solution containing a polar oxygenated hydrocarbon having a polarity of about 1.4 to about 2.0 Debyes.
  • As part of the DOE-sponsored contract for the Synthesis of Dimethyl Ether (DME) and Alternative Fuels in the Liquid Phase from Coal- Derived Syngas, the single-step, slurry phase DME synthesis process was developed. The development involved screening of catalyst systems, process variable studies, and catalyst life studies in two 300 ml stirred autoclaves. As a spin-off of the Liquid Phase Methanol (LPMEOH*) process, the new process significantly improves the syngas conversion efficiency of the LPMEOH process. This improvement can be achieved by replacing a portion of methanol catalyst with a dehydration catalyst in the reactor, resulting in the product methanolmore » being converted to DME, thus avoiding the thermodynamic equilibrium constraint of the methanol reaction. Overall, this increases syngas conversion per-pass. The selectivity and productivity of DME and methanol are affected by the catalyst system employed as well as operating conditions. A preferred catalyst system, consisting of a physical mixture of a methanol catalyst and a gamma alumina, was identified. An improvement of about 50% in methanol equivalent productivity was achieved compared to the LPMEOH process. Results from the process variable study indicate that higher pressure and CO{sub 2} removal benefit the process significantly. Limited life studies performed on the preferred catalyst system suggest somewhat higher than expected deactivation rate for the methanol catalyst. Several DME/methanol mixtures were measured for their key properties as transportation fuels. With small amounts of DME added, significant improvements in both flash points and Reid Vapor Pressure (RVP) were observed over the corresponding values of methanol alone.« less