Asymmetric oxygen-permeable membrane synthesis and its utilization for methane oxidation

不对称透氧膜合成及其在甲烷氧化中的应用

• 批准号: 14205117
• 负责人: KIKUCHI Eiichi
• 金额: $ 33.11万
• 依托单位: Waseda University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-14205117/
• 关键词: asymmetric membrane; perovskite; oxygen-permeable; methane; oxidation; synthesis gas; hydrogen production; steam reforming; 酸素分離膜; 混合伝導体; 膜反応器; 部分酸化; 天然ガス; 非対称膜; ペロブスカイト; 酸素透過膜; セラミック; 結晶性; 混合伝導性; SFC; スラリー

A disk-type Sm_<0.4>Ba_<0.6>Co_<0.2>Fe_<0.8>O_<3-δ> perovskite-type mixed-conducting membrane was applied to a membrane reactor for the partial oxidation of methane to syngas (CO + H_2). The reaction was carried out using Rh (1 wt%)/MgO catalyst by feeding CH_4 diluted with Ar.While CH_4 conversion increased and CO selectivity slightly decreased with increasing temperature, a high level of CH_4 conversion (90%) and a high selectivity to CO (98%) were observed at 1173 K. The oxygen flux was increased under the conditions for the catalytic partial oxidation of CH_4 compared with that measured when Ar was fed to the permeation side. We investigated the reaction pathways in the membrane reactor using different membrane reactor configurations and different kinds of gas. In the membrane reactor without the catalyst, the oxygen flux was not improved even when CH_4 was fed to the permeation side, whereas the oxygen flux was enhanced when CO or H_2 was fed. It is implied that the oxidation of CO and H_2 with the surface oxygen on the permeation side improves the oxygen flux through the membrane, and that CO_2 and H_2O react with CH_4 by reforming reactions to form syngas.

将<0.4>SmBaCoFeO <0.6><0.2><0.8>&lt;3-δ&gt;钙钛矿型混合导电膜应用于甲烷部分氧化制合成气（CO + H2）的膜反应器中。在Rh（1wt%）/MgO催化剂上，以Ar稀释的CH 4为原料，在1173 K时，CH 4的转化率和CO的选择性都很高（分别为90%和98%），但随着温度的升高，CH 4的转化率增加，CO的选择性略有下降。在甲烷催化部分氧化的条件下，氧通量比通入Ar时有所增加。采用不同的膜反应器结构和不同的气体种类对膜反应器中的反应路径进行了研究。在无催化剂的膜反应器中，即使在渗透侧通入CH_4也不能提高氧通量，而通入CO或H_2则能提高氧通量。结果表明，CO和H_2与渗透侧表面氧的氧化作用提高了膜的氧通量，CO_2和H_2O与CH_4发生重整反应生成合成气。

项目成果

Improving oxygen permeability in SrfeCo0.5Ox asymmetric membranes by modifying support-layer porous structure

• DOI: 10.1016/j.matlet.2004.12.042
• 发表时间: 2005-05
• 期刊: Materials Letters
• 影响因子: 3
• 作者: Masayuki Ikeguchi;K. Ishii;Yasushi Sekine;E. Kikuchi;M. Matsukata

Effects of preparation method on oxygen permeation properties of SrFeCo_<0.5>Ox membrane

制备方法对SrFeCo_<0.5>Ox膜透氧性能的影响

• 发表时间: 2003
• 期刊: SEPARATION AND PURIFICATION TECHNOLOGY 32
• 作者: Ikeguchi;M;Yoshino;Y;Kanie K;Nomura;M;Kikuchi;E;Matsukata M
• 通讯作者: Matsukata M

M.Ikeguchi, Y.Sekine, E.Kikuchi, M.Matsukata: "A Novel Method for Preparation of SrFeCo0.5Ox Membranes on Porous Substrates for Oxygen Permeation"Trans.MRS-J. (in press). (2004)

M.Ikeguchi、Y.Sekine、E.Kikuchi、M.Matsukata：“一种在多孔基底上制备用于透氧的 SrFeCo0.5Ox 膜的新方法”Trans.MRS-J。

M.Ikeguchi, E., Kikuchi: "Effects of Preparation Method on Oxygen Permeation Membrane"Separation and Purification. (in press). (2003)

M.Ikeguchi、E.、Kikuchi：“制备方法对透氧膜的影响”分离纯化。

Catalytic activities and coking resistance of Ni/perovskites in steam reforming of methane

• DOI: 10.1016/j.apcata.2005.02.020
• 发表时间: 2005-05
• 期刊: Applied Catalysis A-general
• 影响因子: 5.5
• 作者: Kohei Urasaki;Yasushi Sekine;Shouji Kawabe;E. Kikuchi;M. Matsukata