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Catalytic membrane program. Quarterly report for the period August 1999--October 1999

Description: For both power generation and pipeline-quality gas applications, the projected performance of the membrane currently under development is economically attractive. Aspects of membrane development include hollow fiber substrate production, reproducibility of membrane synthesis, chemical vapor deposition as a post treatment technique, and testing of membrane thermal and hydrothermal stability.
Date: November 12, 1999
Creator: Liu, Paul K.T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Hydrogen Production via a Commercially Ready Inorganic membrane Reactor

Description: Single stage low-temperature-shift water-gas-shift (WGS-LTS) via a membrane reactor (MR) process was studied through both mathematical simulation and experimental verification in this quarter. Our proposed MR yields a reactor size that is 10 to >55% smaller than the comparable conventional reactor for a CO conversion of 80 to 90%. In addition, the CO contaminant level in the hydrogen produced via MR ranges from 1,000 to 4,000 ppm vs 40,000 to >70,000 ppm via the conventional reactor. The … more
Date: August 23, 2005
Creator: Liu, Paul K.T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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co2 Selective Ceramic Membrane for Water-Gas-Shift Reaction With Concomitant Recovery of CO2

Description: A high temperature membrane reactor (MR) has been developed to enhance the water-gas-shift (WGS) reaction efficiency with concomitant CO{sub 2} removal for sequestration. This improved WGS-MR with CO{sub 2} recovery capability is ideally suitable for integration into the Integrated Gasification Combined-Cycle (IGCC) power generation system. Two different CO{sub 2}-affinity materials were selected in this study. The Mg-Al-CO{sub 3}-layered double hydroxide (LDH) was investigated as an adsorbent … more
Date: July 15, 2005
Creator: Liu, Paul K.T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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CO2 Selective Ceramic Membrane for Water-Gas-Shift Reaction With Concomitant Recovery of CO2, Quarterly Report: April-June 2004

Description: For the purpose of process simulation and economic analysis of the proposed CO{sub 2} selective membrane process, we began to generate the equilibrium and rate data at the operating condition interested to our applications. In this quarter, we have concentrated on the experiments at 200 C and CO{sub 2} pressure of 0 to 1 bar. In this report we present the equilibrium isotherm and transport rate data and the mathematical treatment using the commonly accepted Langmuir and linear driving force equ… more
Date: August 2004
Creator: Liu, Paul K.T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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CO2 Selective Ceramic Membrane for Water-Gas-Shift Reaction With Concomitant Recovery of CO2, Quarterly Report: January-March 2005

Description: In this quarter, we have focused on the completion of the loose ends of the experimental study. A series of CO{sub 2}-affinity membranes (carbonaceous base) prepared previously were characterized and evaluated for their suitability for the proposed application The CO{sub 2} permeance and selectivity are 0.5 to >3 m{sup 3}/m{sub 2}/hr/bar and 4 to 10 for CO{sub 2} over nitrogen respectively. Based upon its performance dependence on temperature and pore size, we conclude that this type of CO{s… more
Date: June 1, 2005
Creator: Liu, Paul K.T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Catalytic Membrane Program

Description: This is a summary of the following activities: (1) CO2 membrane material development; (2) use of USC protocol for M and P low cost ceramic substrate; (3) thermal and hydrothermal stability test; (4) alternative carbon membrane development; (5) economic analysis; (6) field test preparation; and (7) presentation.
Date: January 31, 2000
Creator: Liu, Paul K.T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

SiC-BASED HYDROGEN SELECTIVE MEMBRANES FOR WATER-GAS-SHIFT REACTION

Description: This technical report summarizes our activities conducted in Yr II. In Yr I we successfully demonstrated the feasibility of preparing the hydrogen selective SiC membrane with a chemical vapor deposition (CVD) technique. In addition, a SiC macroporous membrane was fabricated as a substrate candidate for the proposed SiC membrane. In Yr II we have focused on the development of a microporous SiC membrane as an intermediate layer between the substrate and the final membrane layer prepared from CVD.… more
Date: October 16, 2001
Creator: Liu, Paul K.T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

CO2 SELECTIVE CERAMIC MEMBRANE FOR WATER-GAS SHIFT REACTION WITH CONCOMITANT FOR THE RECOVERY OF CO2

Description: In this quarter we focus on the membrane synthesis via interphase impregnation and slip casting. The slip casting method shows very promising. A well-organized hydrotalcite layer has been deposited on the porous ceramic substrate. Under SEM examination, few defects were recognized. In addition, its particle size in the range of {approx}500{angstrom} is comparable to our existing Al{sub 2}O{sub 3} membrane with 100{angstrom} pore size. This membrane could be qualified for post-treatment with CVD… more
Date: November 15, 2002
Creator: Liu, Paul K.T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

CO2 Selective Ceramic Membrane for Water-Gas-Shift Reaction With Concomitant Recovery of CO2, Quarterly Report: January-March 2003

Description: Hydrotalcite material properties, specifically its CO{sub 2} reversibility, are critical to the performance of the proposed hydrotalcite-based membrane. In this report, we summarize the fundamental study we have performed using TGA, TGA/MS, and DRIFTS to quantify the degree of CO{sub 2} reversibility for the temperature range from 200 to 300 C. Results from these three separate studies consistently exhibit the CO{sub 2} reversibility. In addition, water effect appears negligible. Finally a high… more
Date: May 20, 2003
Creator: Liu, Paul K.T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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