Production of hydrogen from hydrogen sulfide by means of selective diffusion membranes

Kameyama, Tetsuya; Dokiya, Masayuki; Fujishige, Masao; Yokokawa, Harumi; Fukuda, K.

doi:10.1016/0360-3199(83)90029-0

Cited by 84 publications

(29 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Dokiya et al (1977), Fukuda et al (1978), and Kameyama et al (1981) employed porous Vycor glass to selectively separate the hydrogen produced in the decomposition of hydrogen sulfide. In a separate study using the same reaction, Kameyama et al (1983) showed the possibility of using porous alumina membranes. Shindo et al (1981) conducted similar studies for the hydrogen iodide reaction using porous Vycor glass.…”

Section: Background Studymentioning

confidence: 96%

See 1 more Smart Citation

Analysis of equilibrium shift in isothermal reactors with a permselective wall

Mohan

Govind

1988

AIChE Journal

View full text Add to dashboard Cite

The objective of this study is to obtain a fundamental understanding of the behavior of reactors with a permselective wall (membrane reactors) in terms of: design parameters (reactor length, membrane thickness); operating variables (pressure ratio, feed flow rate): physical properties (rate constant, permeability of fast gas, permselectivity, equilibrium constant): and flow patterns (recycle, cocurrent, countercurrent). Pure feed reacts on the high-pressure side of the membrane, and the product(s) formed are continuously removed to the low-pressure side so that thermodynamic equilibrium is never reached. It is shown by simulation that equilibrium shift can be enhanced by: recycling unconverted reactant; shifting feed location to separate products; and maintaining high permeation rates to reduce backreaction. It is also shown that the choice between cocurrent flow and countercurrent flow depends on the system parameters.

show abstract

Section: Background Studymentioning

confidence: 96%

“…Dokiya et al (1977, 1978) Kameyama et al (1981, 1983) Kameyama et al (1983) Shindo et al (1981 It0 et al (1984) Mohan and Govind Shinji et al (1982) Ito et al (1985 Mohan and Govind ( ,1988( ) Ito (1987 Wood (1968) Gryaznov et al…”

Section: Background Studymentioning

confidence: 99%

Analysis of equilibrium shift in isothermal reactors with a permselective wall

Mohan

Govind

1988

AIChE Journal

View full text Add to dashboard Cite

show abstract

“…Kameyama et al (1979Kameyama et al ( , 1981Kameyama et al ( , 1983) used both a microporous Vycor type glass membrane having a mean pore diameter of 45 8, and a microporous alumina membrane having a mean pore diameter of 1000 A for the H2-H2S separation system. The use of membrane at 800°C or higher increased the yield of hydrogen by about two times that obtained by equilibrium only.…”

Section: Thermal Decomposition Of Hs While Products Are Continually mentioning

confidence: 99%

Production of elemental sulfur and methane from H{sub 2}S and CO{sub 2} derived from a coal desulfurization process. Final report, September 1, 1993--March 31, 1997

Jiang¹,

Khang²,

Keener³

1997

View full text Add to dashboard Cite

“…In fact, there have been many ideas and trials on membrane reactors for methane steam reforming. [1][2][3][4][5][6][7][8][9][10] Furthermore, such membrane reactors have been proposed for other hydrogen production reaction systems, such as the decomposition of hydrogen sulfide, [11][12][13] or dehydrogenation reactions of organic chemical hydrides. 14,15 We have also developed a methodology for preparing hydrogen-selective amorphous silica membranes with control of their pore sizes, 16 which enables us to select a suitable silica membrane for each reaction system, and we successfully developed a membrane reactor for the decomposition of hydrogen sulfide 17 and for the dehydrogenation of cyclohexane.…”

Section: Introductionmentioning

confidence: 99%

Stable equilibrium shift of methane steam reforming in membrane reactors with hydrogen-selective silica membranes

et al. 2010

View full text Add to dashboard Cite

Equilibrium shifts of methane steam reforming in membrane reactors consisting of either tetramethoxysilane-derived amorphous hydrogen-selective silica membrane and rhodium catalysts, or hexamethyldisiloxane-derived membrane and nickel catalysts is experimentally demonstrated. The hexamethyldisiloxane-derived silica membrane showed stable permeance as high as 8 Â 10À8 mol m À2 s À1 Pa À1 of H 2 after exposure to 76 kPa of vapor pressure at 773 K for 60 h, which was a much better performance than that from the tetramethoxysilane-derived silica membrane. Furthermore, the better silica membrane also maintained selectivity of H 2 /N 2 as high as 10 3 under the above hydrothermal conditions. The degree of the equilibrium shifts under various feedrate and pressure conditions coincided with the order of H 2 permeance. In addition, the equilibrium shift of methane steam reforming was stable for 30 h with an S/C ratio of 2.5 at 773 K using a membrane reactor integrated with hexamethyldisiloxane-derived membrane and nickel catalyst.

show abstract

Production of hydrogen from hydrogen sulfide by means of selective diffusion membranes

Cited by 84 publications

References 5 publications

Analysis of equilibrium shift in isothermal reactors with a permselective wall

Analysis of equilibrium shift in isothermal reactors with a permselective wall

Production of elemental sulfur and methane from H{sub 2}S and CO{sub 2} derived from a coal desulfurization process. Final report, September 1, 1993--March 31, 1997

Stable equilibrium shift of methane steam reforming in membrane reactors with hydrogen-selective silica membranes

Contact Info

Product

Resources

About