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in publisher: "Worcester Polytechnic Inst., MA United States"  
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Methane coupling by membrane reactor. Quarterly technical progress report: June 25, 1993--September 24, 1993

Description: Several membranes have been investigated for use in a membrane reactor. Porous VYCOR has been tested for permeability changes with temperature. Three-sectional VYCOR membranes, with a porous central section, have been fabricated and tested in the experimental setup. Catalysts for methane coupling have been reviewed in the literature and five catalysts have been selected. Modeling studies of the methane oxidative coupling reaction in different reactor configurations shows higher C{sub 2} selecti… more
Date: October 28, 1993
Creator: Ma, Yi Hua
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Development of hollow fiber catalytic membrane reactors for high temperature gas cleanup. Final report, September 1989--March 1994

Description: The objective of this project was to develop economically and technically viable catalytic membrane reactors for high temperature, high pressure gaseous contaminant control in Integrated Gasification Combined Cycle (IGCC) systems. These catalytic membrane reactors decompose H{sub 2}S and separate the reaction products. The reactors were designed to operate in the hostile process environment of the IGCC systems, and at temperatures ranging from 500 to 1000{degrees}C. Severe conditions encountere… more
Date: July 1, 1994
Creator: Ma, Yi Hua; Moser, W. R.; Pien, S. & Shelekhin, A. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Confined, granular flows induced by identical, parallel, vibrating boundaries. Quarterly progress report, January 1, 1993--March 31, 1993

Description: In this paper, we calculate the rates at which momentum and energy are transferred from anisotropically fluctuating bumpy boundaries to assemblies of identical, smooth, inelastic spheres. We consider boundaries that vibrate with fluctuation velocities that are governed by anisotropic Maxwellian distribution functions, and focus special attention on boundaries that fluctuate about zero mean velocity yet exert tangential forces on the assemblies with which they come in contact Using the transfer … more
Date: December 31, 1993
Creator: Richman, M. W. & Martin, R. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Methane coupling by membrane reactor. Quarterly technical progress report, March 25, 1993--June 24, 1993

Description: The goal of this research is to develop and study an inorganic catalytic membrane reactor which will allow the oxidative coupling of methane to C{sub 2} hydrocarbons at near 100% selectivity and relatively higher conversion, by control of the oxygen supply through the membrane. The reactor setup has been completed. Repairs and purchase of new mass flow control equipment have been undertaken to enable accurate quantitative analysis of gas mixtures using the GC-MS. A four point sub miniature ther… more
Date: June 25, 1993
Creator: Ma, Yi Hua
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Development of hollow fiber catalytic membrane reactors for high temperature gas cleanup

Description: The technology employed in the Integrated Gasification Combined Cycle (IGCC) permits burning coals with a wide range of sulfur concentrations. Emissions from the process should be reduced by an order of magnitude below stringent federal air quality regulations for coal-fired plants. The maximum thermal efficiency of this type of process can be achieved by removing sulfur and particulates from the high temperature gas. The objective of this project was to develop economically and technically via… more
Date: October 1, 1994
Creator: Ma, Y. H.; Moser, W. R.; Pien, S. & Shelekhin, A. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Methane coupling by membrane reactor. First quarterly report, 1997

Description: The Mn-W-Na/SiO{sub 2} catalyst was studied by running the methane coupling reactions at different methane to oxygen ratios, temperatures and dilution gas flow rates. For methane to oxygen ratios less than 3, the C{sub 2} yield was almost the same; and C{sub 2} yield began to decrease as the methane to oxygen ratio was further increased. The optimal temperature observed was around 800{degrees}C, where the C{sub 2} yield reached a maximum value. Increasing the dilution gas (helium) flow rate res… more
Date: May 1, 1997
Creator: Ma, Yi Hua
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Methane coupling by membrane reactor. Quarterly technical progress report, December 25, 1995--March 24, 1996

Description: Methane oxidative coupling experiments were conducted in a packed-bed reactor using La/MgO catalyst. The results were in agreement with those reported in the literature. Oxygen permeability through an oxygen-conductive dense membrane was measured. The oxygen permeability was about 20% of the reported values and increased with the sweep flow rate of helium in the tube side. Blank runs under methane coupling conditions were carried out with no catalyst packed in the dense membrane tube. Nearly 10… more
Date: May 28, 1996
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Methane coupling by membrane reactor. Quarterly technical progress report, June 25, 1995--September 24, 1995

Description: The research focus, for the development of a radial flow catalytic membrane reactor for studying methane coupling, concentrated on understanding the effects of pore size, catalyst loading and catalyst distribution inside the membrane, on the hydrocarbon selectivity. The experimental results from the catalytic studies of oxidative coupling of methane in the radial flow membrane reactors are summarized in this report and the reactor performances of three radial flow reactors with pore sizes of 0.… more
Date: December 12, 1995
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Methane coupling by membrane reactor. Quarterly technical progress report, March 25, 1995--June 24, 1995

Description: Research focus, for the development of a radial flow catalytic membrane reactor for studying methane coupling concentrated on understanding the effects of pore size on improving the hydrocarbon selectivity for the reaction. The effect of pressure on the reaction was also investigated. Experimental results from the catalytic studies of oxidative coupling of methane in the radial flow membrane reactors presented in this report augment earlier work on membranes of pore diameters of 2.0{mu}m, 0.2{m… more
Date: October 11, 1995
Creator: Ma, Yi Hua
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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